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TABLE OF CONTENTS
PART III
INDEX TO FINANCIAL STATEMENTS OF KNOT OFFSHORE PARTNERS LP

UNITED STATES


SECURITIES AND EXCHANGE COMMISSION


Washington, D.C. 20549



FORM 20-F





(Mark One)

¨
(Mark One)

o


REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934

OR

x
OR

ý


ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended December 31, 2018

For the fiscal year ended December 31, 2015

OR

¨
OR

o


TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934

For the transition periodfromto

OR

¨For the transition period                        from                         to                        

OR

o


SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Date of event requiring this shell company reportreport……………

Commission file number 001-35866



KNOT OFFSHORE PARTNERS LP

(Exact Name of Registrant as Specified in its Charter)

Republic of the Marshall Islands

(Jurisdiction of Incorporation or Organization)

2 Queens Cross

Aberdeen, Aberdeenshire

AB15 4YB, United Kingdom

(Address of Principal Executive Offices)

John Costain

2 Queens Cross

Aberdeen, Aberdeenshire

AB15 4YB, United Kingdom

E-mail: jco@knotoffshorepartners.com

Telephone: 44 (0) 1224 618420

Facsimile: 44 (0) 1224 624891

(Name, Telephone, E-mail and/or Facsimile number and Address of Company Contact Person)

KNOT OFFSHORE PARTNERS LP

(Exact Name of Registrant as Specified in its Charter)

Republic of the Marshall Islands

(Jurisdiction of Incorporation or Organization)

2 Queens Cross
Aberdeen, Aberdeenshire
AB15 4YB, United Kingdom


(Address of Principal Executive Offices)

John Costain
2 Queens Cross
Aberdeen, Aberdeenshire
AB15 4YB, United Kingdom
E-mail: jco@knotoffshorepartners.com
Telephone: 44 (0) 1224 618420
Facsimile: 44 (0) 1224 624891


(Name, Telephone, E-mail and/or Facsimile number and Address of Company Contact Person)

Securities registered or to be registered pursuant to Section 12(b) of the Act:

Title of Each Class

Name of Each Exchange on Which Registered


Common units representing limited partner interests


New York Stock Exchange

Securities registered or to be registered pursuant to Section 12(g) of the Act:None

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act:None



Indicate the number of outstanding shares of each of the issuer’sissuer's classes of capital or common stock as of the close of the period covered by the annual report.

18,626,59432,694,094 common units representing limited partner interests

8,567,500 subordinated units representing limited partner interests3,750,000 Series A Convertible Preferred Units

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.

¨o Yes    xý No

If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.

¨o Yes    xý No

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

xý Yes    ¨o No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

xý Yes    ¨o No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer.filer or an emerging growth company. See definition of “accelerated filer"large accelerated filer", "accelerated filer" and large accelerated filer”"emerging growth company" in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer ¨o Accelerated filer xý Non-accelerated filer ¨o Emerging growth company o

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards* provided pursuant to Section 13(a) of the Exchange Act. o

*The term "new or revised financial accounting standards" refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:

U.S. GAAP ý 

U.S. GAAP  x

International Financial Reporting Standards as issued


by the International Accounting Standards Board ¨o

Other  ¨ Other o

If “Other”"Other" has been checked in response to the previous question, indicate by check mark which financial statement item the registrant has elected to follow.

¨o Item 17    ¨o Item 18

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

¨o Yes    xý No


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KNOT Offshore Partners LP



INDEX TO REPORT ON FORM 20-F

Forward-Looking Statements

  1 

Part I

  34 

Item 1.

 Identity of Directors, Senior Management and Advisers  34 

Item 2.

 Offer Statistics and Expected Timetable  34 

Item 3.

 Key Information  34 
A.

 A.

Selected Financial Data

  34 
B.

 B.

Capitalization and Indebtedness

  67 
C.

 C.

Reasons for the Offer and Use of Proceeds

  67 
D.

 D.

Risk Factors

  67 

Item 4.

 Information on the Partnership  2838 
A.

 A.

History and Development of the Partnership

  2838 
B.

 B.

Business Overview

  2940 
C.

 C.

Organizational Structure

  4459 
D.

 D.

Property, Plants and Equipment

  4561 

Item 4A.

 Unresolved Staff Comments  4561 

Item 5.

 Operating and Financial Review and Prospects  4661 
A.

 A.

Operating Results

  5270 
B.

 B.

Liquidity and Capital Resources

  5775 
C.

 C.

Research and Development, Patents and Licenses, Etc.

  6893 
D.

 D.

Trend Information

  6893 
E.

 E.

Off-Balance Sheet Arrangements

  6893 
F.

 F.

Tabular Disclosure of Contractual Obligations

  6894 
G.

 G.

Safe Harbor

  6994 

Item 6.

 Directors, Senior Management and Employees  6994 
A.

 A.

Directors and Senior Management

  6994 
B.

 B.

Compensation

  7096 
C.

 C.

Board Practices

  7198 
D.

 D.

Employees

  7299 
E.

 E.

Unit Ownership

  7299 

Item 7.

 Major Unitholders and Related Party Transactions  73100 
A.

 A.

Major Unitholders

  73100 
B.

 B.

Related Party Transactions

  74101 
C.

 C.

Interests of Experts and Counsel

  82111 

Item 8.

 Financial Information  82111 
A.

 A.

Consolidated Statements and Other Financial Information

  82111 
B.

 B.

Significant Changes

  84114 

Item 9.

 The Offer and Listing  84114 
A.

 A.

Offer and Listing Details

  84114 
B.

 B.

Plan of Distribution

  85114 
C.

 C.

Markets

  85114 
D.

 D.

Selling Shareholders

  85114 
E.

 E.

Dilution

  85114 
F.

 F.

Expenses of the Issue

  85114 

Item 10.

 Additional Information  85115 
A.

 A.

Share Capital

  85115 
B.

 B.

Memorandum and Articles of Association

  85115 
C.

 C.

Material Contracts

  85115 
D.

 D.

Exchange Controls

  88118 
E.

 E.

Taxation

  88118 
F.

 F.

Dividends and Paying Agents

  94126 
G.

 G.

Statement by Experts

  94126 
H.

 H.

Documents on Display

  94126 
I.

 I.

Subsidiary Information

  94126 


Item 11.

 Quantitative and Qualitative Disclosures About Market Risk  94126 

Item 12.

 Description of Securities Other than Equity Securities  95128 

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Part II

  96129 

Item 13.

 Defaults, Dividend Arrearages and Delinquencies  96129 

Item 14.

 Material Modifications to the Rights of Securities Holders and Use of Proceeds  96129 

Item 15.

 Controls and Procedures  96129 

Item 16A.

 Audit Committee Financial Expert  97130 

Item 16B.

 Code of Ethics  97130 

Item 16C.

 Principal Accountant Fees and Services  97130 

Item 16D.

 Exemptions from the Listing Standards for Audit Committees  98131 

Item 16E.

 Purchases of Equity Securities by the Issuer and Affiliated Purchasers  98131 

Item 16F.

 Change in Registrants’Registrants' Certifying Accountant  98131 

Item 16G.

 Corporate Governance  98131 

Item 16H.

 Mine Safety Disclosure  99132 

Part III

  100133 

Item 17.

 Financial Statements  100133 

Item 18.

 Financial Statements  100133 

Item 19.

 Exhibits  100133 

Signature

 138 

Index to Financial Statements of KNOT Offshore Partners LP

  F-1 


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FORWARD-LOOKING STATEMENTS

This Annual Report on Form 20-F for the year ended December 31, 20152018 (this “Annual Report”"Annual Report") contains certain forward-looking statements concerning plans and objectives of management for future operations or economic performance, or assumptions related thereto, including our financial forecast. In addition, we and our representatives may from time to time make other oral or written statements that are also forward-looking statements. Such statements include, in particular, statements about our plans, strategies, business prospects, changes and trends in our business, and the markets in which we operate as described in this Annual Report. In some cases, you can identify the forward-looking statements by the use of words such as “may,” “could,” “should,” “would,” “expect,” “plan,” “anticipate,” “intend,” “forecast,” “believe,” “estimate,” “predict,” “propose,” “potential,” “continue”"may," "could," "should," "would," "expect," "plan," "anticipate," "intend," "forecast," "believe," "estimate," "predict," "propose," "potential," "continue" or the negative of these terms or other comparable terminology. These forward-looking statements reflect management’smanagement's current views only as of the date of this Annual Report and are not intended to give any assurance as to future results. As a result, unitholders are cautioned not to rely on any forward-looking statements.

Forward-looking statements appear in a number of places in this Annual Report and include statements with respect to, among other things:

KNOT’s

the ability of Knutsen NYK Offshore Tankers AS ("KNOT") and KNOT Offshore Partners’ abilityPartners LP ("KNOT Offshore Partners") to build shuttle tankers and the timing of the delivery and acceptance of any such vessels by their respective charterers;



forecasts of KNOT Offshore Partners’Partners' ability to make or increase distributions on its common units and make distributions on its Series A Convertible Preferred Units (the "Series A Preferred Units") and the amount of any such distributions;



KNOT Offshore Partners’Partners' ability to integrate and realize the expected benefits from acquisitions;



KNOT Offshore Partners’Partners' anticipated growth strategies;



the effects of a worldwide or regional economic slowdown;



turmoil in the global financial markets;



fluctuations in currencies and interest rates;



fluctuations in the price of oil;



general market conditions, including fluctuations in hire rates and vessel values;



changes in KNOT Offshore Partners’Partners' operating expenses, including drydocking and insurance costs and bunker prices;



KNOT Offshore Partners’Partners' future financial condition or results of operations and future revenues and expenses;



the repayment of debt and settling of any interest rate swaps;



KNOT Offshore Partners’Partners' ability to make additional borrowings and to access debt and equity markets;



planned capital expenditures and availability of capital resources to fund capital expenditures;



KNOT Offshore Partners’Partners' ability to maintain long-term relationships with major users of shuttle tonnage;

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    KNOT Offshore Partners’Partners' ability to leverage KNOT’sKNOT's relationships and reputation in the shipping industry;



KNOT Offshore Partners’Partners' ability to purchase vessels from KNOT in the future;



KNOT Offshore Partners’Partners' continued ability to enter into long-term charters, which KNOT Offshore Partners defines as charters of five years or more;



KNOT Offshore Partners’Partners' ability to maximize the use of its vessels, including the re-deployment or disposition of vessels no longer under long-term charter;



the financial condition of KNOT Offshore Partners’Partners' existing or future customers and their ability to fulfill their charter obligations;



timely purchases and deliveries of newbuilds;



future purchase prices of newbuilds and secondhand vessels;



any impairment of the value of KNOT Offshore Partners’Partners' vessels;



KNOT Offshore Partners’Partners' ability to compete successfully for future chartering and newbuild opportunities;



acceptance of a vessel by its charterer;



termination dates and extensions of charters;



the expected cost of, and KNOT Offshore Partners’Partners' ability to, comply with governmental regulations, maritime self-regulatory organization standards, as well as standard regulations imposed by its charterers applicable to KNOT Offshore Partners’Partners' business;



availability of skilled labor, vessel crews and management;



KNOT Offshore Partners’Partners' general and administrative expenses and its fees and expenses payable under the technical management agreements, the management and administration agreements and the administrative services agreement;



the anticipated taxation of KNOT Offshore Partners and distributions to KNOT Offshore Partners’Partners' unitholders;



estimated future maintenance and replacement capital expenditures;



Marshall Islands economic substance requirements;

KNOT Offshore Partners’Partners' ability to retain key employees;

customers’

customers' increasing emphasis on environmental and safety concerns;



potential liability from any pending or future litigation;



potential disruption of shipping routes due to accidents, political events, piracy or acts by terrorists;



future sales of KNOT Offshore Partners’Partners' securities in the public market; and



KNOT Offshore Partners’Partners' business strategy and other plans and objectives for future operations.

Forward-looking statements in this Annual Report are made based upon management’smanagement's current plans, expectations, estimates, assumptions and beliefs concerning future events impacting us and therefore involve a number of risks and uncertainties, including those risks discussed in “Item"Item 3. Key Information—Risk Factors." The risks, uncertainties and assumptions involve known and unknown risks and are inherently subject to significant uncertainties and contingencies, many of which are beyond


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KNOT Offshore Partners’Partners' control. KNOT Offshore Partners cautions that forward-looking statements are not guarantees and that actual results could differ materially from those expressed or implied in the forward-looking statements.

KNOT Offshore Partners undertakes no obligation to update any forward-looking statement or statements to reflect events or circumstances after the date on which such statement is made or to reflect the occurrence of unanticipated events. New factors emerge from time to time, and it is not possible to predict all of these factors. Further, KNOT Offshore Partners cannot assess the impact of each such factor on its business or the extent to which any factor, or combination of factors, may cause actual results to be materially different from those contained in any forward-looking statement. KNOT Offshore Partners makes no prediction or statement about the performance of its common units. The various disclosures included in this Annual Report and in KNOT Offshore Partners’Partners' other filings made with the Securities and Exchange Commission (the “SEC”"SEC") that attempt to advise interested parties of the risks and factors that may affect KNOT Offshore Partners’Partners' business, prospects and results of operations should be carefully reviewed and considered.


Table of Contents


PART I

Item 1.    Identity of Directors, Senior Management and Advisers

Not applicable.

Item 2.    Offer Statistics and Expected Timetable

Not applicable.

Item 3.    Key Information

The following selected financial data should be read in conjunction with “Item"Item 5. Operating and Financial Review and Prospects”Prospects" and the consolidated and combined carve-out financial statements and accompanying notes included in this Annual Report. Unless the context otherwise requires, references herein to “KNOT"KNOT Offshore Partners,” “we,” “our,” “us”" "we," "our," "us" and “the Partnership”"the Partnership" or similar terms refer to KNOT Offshore Partners LP, a Marshall Islands limited partnership, or any one or more of its subsidiaries, or to all such entities. References to “KNOT”"KNOT" refer, depending on the context, to Knutsen NYK Offshore Tankers AS and to any one or more of its direct and indirect subsidiaries. References to “KNOT Management”"KNOT Management" refer to KNOT Management AS, the entity that provides us with crew, technical and commercial management services. References to “our"KNOT Management Denmark" refer to KNOT Management Denmark AS, a 100% owned subsidiary of KNOT which also provides us with management services. References to "our general partner”partner" refer to KNOT Offshore Partners GP LLC, the general partner of the Partnership. References to “KNOT UK”"KNOT UK" refer to KNOT Offshore Partners UK LLC, a wholly owned subsidiary of the Partnership. References to “TSSI”"TSSI" refer to TS Shipping Invest AS, and references to “NYK”"NYK Europe" refer to Nippon Yusen Kaisha,NYK Logistics Holding (Europe) B.V, each of which holds a 50% interest in KNOT. References to “KOAS UK”NYK are to Nippon Yusen Kabushiki Kaisha. References to "KOAS UK" refer to Knutsen OAS (UK) Ltd., a wholly owned subsidiary of TSSI. References to “KOAS”"KOAS" refer to Knutsen OAS Shipping AS, a wholly owned subsidiary of TSSI.

The following table presents, in each case for the periods and as of the dates indicated, our selected consolidated and combined carve-out financial and operating data, which includes, for periods prior to the closing of our initial public offering (“IPO”) on April 15, 2013, selected consolidated and combined carve-out financial and operating data of the Partnership and its subsidiaries that had interests in theWindsor Knutsen, theBodil Knutsen, theRecife Knutsen and theFortaleza Knutsen.data.

Pursuant to our partnership agreement, our general partner has irrevocably delegated to our board of directors the power to oversee and direct the operations of, manage and determine the strategies and policies of the Partnership. During the period from our IPO until the time of our first annual meeting of unitholders on June 25, 2013, our general partner retained the sole power to appoint, remove and replace all members of our board of directors. At our first annual meeting of unitholders, four of the seven board members became electable by the common unitholders and accordingly, from this date, KNOT, as the owner of our general partner, no longer retained the power to control our board of directors and hence us. As a result, we are no longer considered to be under common control with KNOT, and, as a consequence, we no longer account for any vessel acquisitions from KNOT after June 25, 2013 as a transfer of equity interests between entities under common control.

In August 2013, June 2014, December 2014, June 2015, and October 2015, December 2016, March 2017, June, 2017, September 2017, December 2017 and March 2018 we acquired KNOT’sKNOT's 100% interest in the companies that own and operate the shuttle tankers, theCarmen Knutsen, theHilda Knutsen andTorill Knutsen,theDan Cisne, theDan Sabia,and theIngrid Knutsen, theRaquel Knutsen, theTordis Knutsen, theVigdis Knutsen, theLena Knutsen, theBrasil Knutsen and theAnna Knutsen respectively, each of which we accounted for as an acquisition of a business. Accordingly,business, other than theAnna Knutsen, which was accounted for as an asset. The results of these acquisitions are included in our results from the dates of their respective acquisition. There has been no retroactive restatement of our financial statements to reflect the historical results of theCarmen Knutsen, theHilda Knutsen, theTorill Knutsen, theDan Cisne,theDan Sabia and, theIngrid Knutsen, theRaquel Knutsen, theTordis Knutsen, theVigdis Knutsen, theLena Knutsen, theBrasil Knutsen or theAnna Knutsen prior to their respective acquisition.

The following financial data should be read in conjunction with “Item"Item 5. Operating and Financial Review and Prospects”Prospects" and the consolidated and combined carve-out financial statements and accompanying notes included in this Annual Report.


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Our financial position, results of operations and cash flows could differ from those that would have resulted if we operated autonomously or as an entity independent of KNOT in the periods prior to our IPO for which historical financial and operating data are presented below and such data may not be indicative of our future operating results or financial performance.

 
 Year Ended December 31, 
 
 2018 2017 2016 2015 2014 
 
 (U.S. Dollars in thousands, except per unit amounts and fleet data)
 

Statement of Operations Data:

                

Total revenues

 $279,456 $219,203 $173,671 $155,024 $112,841 

Vessel operating expenses(1)

  56,730  46,709  30,903  27,543  23,879 

Depreciation

  88,756  71,583  56,230  48,844  34,322 

General and administrative expenses

  5,290  5,555  4,371  4,290  4,323 

Goodwill impairment charge

        6,217   

Operating income

  128,680  95,356  82,167  68,130  50,317 

Interest income

  739  248  24  8  13 

Interest expense

  (49,956) (30,714) (20,867) (17,451) (15,271)

Other finance expense

  (1,260) (1,406) (1,311) (504) (1,271)

Realized and unrealized gain (loss) on derivative instruments

  4,039  4,831  1,213  (9,695) (6,407 

Net gain (loss) on foreign currency transactions

  (79) (267) (139) (105) 26 

Income (loss) before income taxes

  82,163  68,048  61,087  40,383  27,407 

Income tax benefit (expense)

  2  16  15  59  (15)

Net income (loss)

 $82,165 $68,064 $61,102 $40,442 $27,392 

Earnings Per Unit (Basic and Diluted):

                

Common units (Basic)

 $2.251 $2.050 $2.291 $1.499 $1.369 

Common units (Diluted)

  2.217  2.037  2.291  1.499  1.369 

Subordinated units(2)

      1.542  1.708  1.343 

General partner units

  2.251  2.046  2.248  1.487  1.329 

Cash distributions declared and paid per unit

  2.080  2.080  2.080  2.030  1.795 

Balance Sheet Data (at end of period):

                

Cash and cash equivalents

 $41,712 $46,104 $27,664 $23,573 $30,746 

Vessels and equipment, net

  1,767,080  1,723,023  1,256,889  1,192,927  1,021,857 

Total assets

  1,836,824  1,793,168  1,292,275  1,223,870  1,070,748 

Long-term debt (including current portion and seller's credits)

  1,077,291  1,026,615  741,646  667,722  613,221 

Series A Convertible Preferred Units

  89,264  89,264       

Partners' capital

  642,775  639,950  521,712  520,770  419,365 

Cash Flows Data:

                

Net cash provided by operating activities

 $148,646 $154,585 $108,445 $89,160 $59,339 

Net cash used in investing activities

  (15,493) (94,857) (13,952) (46,488) (121,946)

Net cash provided by (used in) financing activities

  (137,376) (41,378) (90,345) (49,575) 64,768 

Fleet Data:

                

Number of shuttle tankers in operation at end of period

  16  15  11  10  8 

Average age of shuttle tankers in operation at end of period (years)

  5.5  4.7  4.7  4.1  3.3 

Total calendar days for fleet

  5,781  4,643  3,691  3,197  2,209 

Total operating days for fleet(3)

  5,657  4,400  3,668  3,193  2,196 

Other Financial Data:

                

EBITDA(4)

 $220,136 $170,097 $138,160 $106,670 $76,987 

Adjusted EBITDA(4)

  217,436  166,939  138,397  123,191  84,639 

(1)
Vessel operating expenses include crewing, repairs and maintenance, insurance, stores, lube oils and communication expenses.

(2)
On May 18, 2016 all of the subordinated units converted into common units on a one-for-one basis.

(3)
The operating days for our fleet is the total number of days in a given period that the vessels were in our possession less the total number of days off-hire. We define days off-hire as days lost to, among other things, operational deficiencies, drydocking for repairs, maintenance or inspection, equipment breakdowns, special surveys and vessel upgrades, delays due to accidents, crewing strikes, certain vessel detentions or similar

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       Year Ended December 31, 
       2015  2014  2013  2012  2011 
       

    (U.S. Dollars in thousands,

    except per unit amounts and fleet data)

     

    Statement of Operations Data:

          

    Total revenues

      $155,024   $112,841   $73,401   $65,653   $43,909  

    Voyage expenses (1)

       —     —     —     —     2,653  

    Net voyage revenues

       155,024    112,841    73,401    65,653    41,256  

    Vessel operating expenses(2)

       27,543    23,879    14,288    13,000    10,795  

    Depreciation

       48,844    34,322    23,768    21,181    16,229  

    General and administrative expenses

       4,290    4,323    5,361    4,834    927  

    Goodwill impairment charge

       6,217    —     —     —     —   

    Operating income

       68,130    50,317    29,984    26,638    13,305  

    Interest income

       8    13    30    19    34  

    Interest expense

       (17,451  (15,271  (10,773  (13,471  (9,650

    Other finance expense

       (504  (1,271  (2,048  (3,378  (2,741

    Realized and unrealized gain (loss) on derivative instruments

       (9,695  (6,407  505    (6,031  (15,489

    Net gain (loss) on foreign currency transactions

       (105  26    193    (1,771  (3,037

    Income (loss) before income taxes

       40,383    27,407    17,891    2,006    (17,578

    Income tax benefit (expense)

       59    (15  (2,827  (1,261  1,240  

    Net income (loss)

      $40,442   $27,392   $15,064   $745   $(16,338

    Earnings Per Unit (Basic and Diluted):

          

    Common units

      $1.499   $1.369   $1.063   $—    $—   

    Subordinated units

       1.708    1.343    1.065    —     —   

    General partner units

       1.487    1.329    1.063    —     —   

    Cash distributions declared and paid per unit

       2.030    1.795    0.752    —     —   

    Balance Sheet Data (at end of period):

          

    Cash and cash equivalents

      $23,573   $30,746   $28,836   $1,287   $3,189  

    Vessels and equipment, net

       1,192,927    1,021,857    617,785    496,768    517,897  

    Total assets

       1,223,870    1,070,748    660,173    511,811    534,603  

    Long-term debt (including current portion and seller’s credits)

       671,690    613,221    349,977    347,850    375,933  

    Owners’ equity

       —     —     —     97,194    67,370  

    Partners’ capital

       520,770    419,365    281,927    —     —   

    Cash Flows Data:

          

    Net cash provided by operating activities

      $89,160   $59,339   $44,160   $19,307   $11,473  

    Net cash used in investing activities

       (46,488  (121,946  (55,468  (52  (138,104

    Net cash provided by (used in) financing activities

       (49,575  64,768    38,890    (21,156  126,445  

    Fleet Data:

          

    Number of shuttle tankers in operation at end of period

       10    8    5    4    4  

    Average age of shuttle tankers in operation at end of period (years)

       4.1    3.3    3.1    2.7    1.7  

    Total calendar days for fleet

       3,197    2,209    1,613    1,464    988.7  

    Total operating days for fleet(3)

       3,193    2,196    1,606    1,377    973.6  

    Other Financial Data:

          

    EBITDA(4)

      $106,670   $76,987   $52,402   $36,639   $8,267  

    Adjusted EBITDA(4)

       116,974    84,639    53,752    47,819    29,534  
    problems, our failure to maintain the vessel in compliance with its specifications and contractual standards or to provide the required crew, or periods of commercial waiting time during which we do not earn hire rates.

(4)
Please read "—Non-U.S. GAAP Financial Measures" below.

(1)Voyage expenses are all expenses unique to a particular voyage, including bunker fuel expenses, port fees, cargo loading and unloading expenses, canal tolls and agency fees.
(2)Vessel operating expenses include crewing, repairs and maintenance, insurance, stores, lube oils and communication expenses.
(3)The operating days for our fleet is the total number of days in a given period that the vessels were in our possession less the total number of days off-hire. We define days off-hire as days lost to, among other things, operational deficiencies, drydocking for repairs, maintenance or inspection, equipment breakdowns, special surveys and vessel upgrades, delays due to accidents, crewing strikes, certain vessel detentions or similar problems, our failure to maintain the vessel in compliance with its specifications and contractual standards or to provide the required crew, or periods of commercial waiting time during which we do not earn hire rates.
(4)Please read “Non-U.S. GAAP Financial Measures” below.

Non-U.S. GAAP Financial Measures

EBITDA and Adjusted EBITDAEBITDA..    EBITDA is defined as earnings before interest, depreciation and taxes. Adjusted EBITDA is defined as earnings before interest, depreciation, taxes, goodwill impairment charges and other financial items (including other finance expense, realized and unrealized gain (loss) on derivative instruments and net lossgain (loss) on foreign currency transactions). EBITDA is used as a supplemental financial measure by management and external users of financial statements, such as our lenders, to assess our financial and operating performance and our compliance with the financial covenants and restrictions contained in our financing agreements. Adjusted EBITDA is used as a supplemental financial measure by management and external users of financial statements, such as investors, to assess our financial and operating performance. We believe that EBITDA and Adjusted EBITDA assistsassist our management and investors by increasing the comparability of our performance from period to period and against the performance of other companies in our industry that provide EBITDA and Adjusted EBITDA information. This increased comparability is achieved by excluding the potentially disparate effects between periods or companies of interest, other financial items, taxes, goodwill impairment charges and depreciation, and taxes,as applicable, which items are affected by various and possibly changing financing methods, capital structure and historical cost basis and which items may significantly affect net income between periods. We believe that including EBITDA and Adjusted EBITDA as a financial and operating measuremeasures benefits investors in (1) selecting between investing in us and other investment alternatives and (2) monitoring our ongoing financial and operational strength in assessing whether to continue to hold common units.

EBITDA and Adjusted EBITDA should not be considered alternatives to net income operating income, cash flow from operating activities or any other measureindicator of financialour performance presentedcalculated in accordance with accounting principles generally accepted in the United States (“("U.S. GAAP”GAAP"). EBITDA and Adjusted EBITDA exclude some, but not all, items that affect net income, and these measures may vary among other companies. Therefore, EBITDA and Adjusted EBITDA as presented below may not be comparable to similarly titled measures of other companies. The following tables reconciletable reconciles EBITDA and Adjusted EBITDA to net cash provided by operating activities and net income, the most directly comparable financial measures presented in accordance with U.S. GAAP measure, for the periods presented.

 
 Year Ended December 31, 
 
 2018 2017 2016 2015 2014 
 
 (dollars in thousands)
 

Net income

 $82,165 $68,064 $61,102 $40,442 $27,392 

Interest income

  (739) (248) (24) (8) (13)

Interest expense

  49,956  30,714  20,867  17,451  15,271 

Depreciation

  88,756  71,583  56,230  48,844  34,322 

Income tax (benefit) expense

  (2) (16) (15) (59) 15 

EBITDA

 $220,136 $170,097 $138,160 $106,670 $76,987 

Goodwill impairment charge

        6,217   

Other financial items(a)

  (2,700) (3,158) 237  10,304  7,652 

Adjusted EBITDA

 $217,436 $166,939 $138,397 $123,191 $84,639 

(a)
Other financial items consist of other finance expense, realized and unrealized (gain) loss on derivative instruments, and net (gain) loss on foreign currency transactions.

   Year Ended December 31, 
   2015   2014   2013   2012   2011 
   (dollars in thousands) 

Reconciliation to net cash provided by operating activities:

          

Net cash provided by operating activities

  $89,160    $59,339    $44,160    $19,307    $11,473  

Interest income

   (8   (13   (30   (19   (34

Interest expense

   17,451     15,271     10,773     13,471     9,650  

Amortization of contract intangibles / liabilities

   1,518     1,518     1,518     1,518     868  

Amortization of deferred revenue

   1,913     1,170     427     427     285  

Amortization of deferred debt issuance cost

   (1,149   (3,021   (1,741   (982   (658

Goodwill impairment charge

   (6,217   —      —      —      —   

Income taxes paid

   348     731     —      —      —   

Unrealized gain (loss) on derivative instruments

   (390   (3,910   1,770     (549   (8,923

Unrealized gain (loss) on foreign currency transactions

   (22   136     (32   (579   (3,056

Other items

   —      16     —      (1   (2,962

Change in operating assets and liabilities:

          

Decrease (increase) in trade accounts receivable

   —      —      (99   6     93  

Decrease (increase) in receivables from owners and affiliates

   —      —      —      —      (386

Decrease (increase) in amounts due from related parties

   (1,008   49     77     —      —   

Decrease (increase) in inventories

   (210   (58   (197   71     (218

Decrease (increase) in other current assets

   (1,222   172     (2,555   1,609     211  

Increase (decrease) in trade accounts payable

   (45   (337   (662   334     7,874  

Increase (decrease) in accrued expenses

   737     2,092     (771   342   �� (324

Increase (decrease) in prepaid revenue

   4,306     (793   (101   1,684     (5,626

Increase (decrease) in amounts due to related parties

   1,508     4,625     (109   —      —   

Increase (decrease) in other liabilities

   —      —      (26   —      —   
  

 

 

   

 

 

   

 

 

   

 

 

   

 

 

 

EBITDA

  $106,670    $76,987    $52,402    $36,639    $8,267  

Other financial items(a)

   10,304     7,652     1,350     11,180     21,267  
  

 

 

   

 

 

   

 

 

   

 

 

   

 

 

 

Adjusted EBITDA

  $116,974    $84,639    $53,752    $47,819    $29,534  
  

 

 

   

 

 

   

 

 

   

 

 

   

 

 

 
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   Year Ended December 31, 
   2015  2014  2013  2012  2011 
   (dollars in thousands) 

Reconciliation to net income (loss):

      

Net income (loss)

  $40,442   $27,392   $15,064   $745   $(16,338

Interest income

   (8  (13  (30  (19  (34

Interest expense

   17,451    15,271    10,773    13,471    9,650  

Depreciation

   48,844    34,322    23,768    21,181    16,229  

Income tax (benefit) expense

   (59  15    2,827    1,261    (1,240
  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

EBITDA

  $106,670   $76,987   $52,402   $36,639   $8,267  

Other financial items(a)

   10,304    7,652    1,350    11,180    21,267  
  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

Adjusted EBITDA

  $116,974   $84,639   $53,752   $47,819   $29,534  
  

 

 

  

 

 

  

 

 

  

 

 

  

 

 

 

(a)Other financial items consist of other finance expense, realized and unrealized (gain) loss on derivative instruments, and net (gain) loss on foreign currency transactions.

    B. Capitalization and Indebtedness

Not applicable.

    C. Reasons for the Offer and Use of Proceeds

Not applicable.

    D. Risk Factors

Some of the following risks relate principally to the industry in which we operate and to our business in general. Other risks relate principally to the securities market and to ownership of our common units. The occurrence of any of the events described in this section could significantly and negatively affect our business, financial condition, operating results or cash available for distributions or the trading price of our common units.

Risks Inherent in Our Business

We may not have sufficient cash from operations following the establishment of cash reserves and payment of fees and expenses to enable us to pay the minimum quarterly distribution on our common units and subordinated units.

We may not have sufficient cash from operations to pay the minimum quarterly distribution on our common units. Furthermore, distributions to the holders of $0.375 per unitour common units are subject to the prior distribution rights of any holders of our preferred units outstanding. As of April 10, 2019, there were 3,750,000 Series A Preferred Units issued and outstanding. Under the terms of our partnership agreement, we are prohibited from declaring and paying distributions on our common units until we declare and subordinated units.pay (or set aside for payment) full distributions on the Series A Preferred Units. The amount of cash we can distribute on our units principally depends upon the amount of cash we generate from our operations, which may fluctuate from quarter to quarter based on the risks described in this section, including, among other things:

    the charter rates we obtain from our customers;



the number of off-hire days for our fleet and the timing of, and number of days required for, drydocking of vessels;



the level of our operating costs, such as the cost of crews and insurance;



currency exchange rate fluctuations;



the supply of shuttle tankers;



the demand for shuttle tankers;



the price and level of production of, and demand for, crude oil;



prevailing global and regional economic and political conditions;



changes in local income tax rates; and



the effect of governmental regulations and maritime self-regulatory organization standards on the conduct of our business.

In addition, the actual amount of cash we have available for distribution depends on other factors, including:

    the level of capital expenditures we make, including for maintaining or replacing vessels, building new vessels, acquiring existing vessels and complying with regulations;

    the level of debt we will incur to fund future acquisitions;

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the level of debt we will incur if we exercise our option to purchase theRaquel Knutsen or acquire additional vessels from KNOT;

    fluctuations in our working capital needs;



our ability to make, and the level of, working capital borrowings; and



the amount of any cash reserves, including reserves for future maintenance and replacement capital expenditures, working capital and other matters, established by our board of directors.

The amount of cash we generate from our operations may differ materially from our profit or loss for the period, which is affected by non-cash items. As a result of this and the other factors mentioned above, we may make cash distributions during periods when we record losses and may not make cash distributions during periods when we record net income.

Our ability to grow and to meet our financial needs may be adversely affected by our cash distribution policy.

Our cash distribution policy, which is consistent with our partnership agreement, requires us to distribute all of our available cash (as defined in our partnership agreement) each quarter. Accordingly, our growth may not be as fast as businesses that reinvest their available cash to expand ongoing operations.

In determining the amount of cash available for distribution, our board of directors approves the amount of cash reserves to set aside, including reserves for future maintenance and replacement capital expenditures, working capital and other matters. We also rely upon external financing sources, including commercial borrowings, to fund our capital expenditures. Accordingly, to the extent we do not have sufficient cash reserves or are unable to obtain financing, our cash distribution policy may significantly impair our ability to meet our financial needs or to grow.

We must make substantial capital expenditures to maintain the operating capacity of our fleet, which reduces cash available for distribution. In addition, each quarter we are required to deduct estimated maintenance and replacement capital expenditures from operating surplus, which may result in less cash available to unitholders than if actual maintenance and replacement capital expenditures were deducted.

We must make substantial capital expenditures to maintain and replace, over the long-term, the operating capacity of our fleet. Maintenance and replacement capital expenditures include capital expenditures associated with the removal of a vessel from the water for inspection, maintenance and/or repair of submerged parts (or drydocking) and modifying an existing vessel or acquiring a new vessel to the extent these expenditures are incurred to maintain or replace the operating capacity of our fleet. These expenditures could vary significantly from quarter to quarter and could increase as a result of changes in:

    the cost of labor and materials;



customer requirements;



the size of our fleet;



the cost of replacement vessels;



length of charters;



governmental regulations and maritime self-regulatory organization standards relating to safety, security or the environment; and



competitive standards.

Our partnership agreement requires our board of directors to deduct estimated, rather than actual, maintenance and replacement capital expenditures from operating surplus each quarter in an effort to reduce fluctuations in operating surplus (as defined in our partnership agreement). The amount of estimated maintenance and replacement capital expenditures deducted from operating surplus is subject


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to review and change by our board of directors and our conflicts committee at least once a year. In years when estimated maintenance and replacement capital expenditures are higher than actual maintenance and replacement capital expenditures, the amount of cash available for distribution to unitholders may be lower than if actual maintenance and replacement capital expenditures were deducted from operating surplus. If our board of directors underestimates the appropriate level of estimated maintenance and replacement capital expenditures, we may have less cash available for distribution in future periods when actual capital expenditures exceed our previous estimates.

If capital expenditures are financed through cash from operations or by issuing debt or equity securities, our ability to make cash distributions may be diminished, our financial leverage could increase, or our unitholders may be diluted.

Use of cash from operations to expand or maintain our fleet reduces cash available for distribution to unitholders. Our ability to obtain bank financing or to access the capital markets for future offerings may be limited by our financial condition at the time of any such financing or offering as well as by adverse market conditions resulting from, among other things, general economic conditions and contingencies and uncertainties that are beyond our control. Our failure to obtain the funds for future capital expenditures could have a material adverse effect on our business, financial condition, results of operations and ability to make cash distributions to our unitholders. Even if we are successful in obtaining necessary funds, the terms of such financings could limit our ability to pay cash distributions to unitholders. In addition, incurring additional debt may significantly increase our interest expense and financial leverage, and issuing additional equity securities may result in significant unitholder dilution and would increase the aggregate amount of cash required to maintain our current level of quarterly distributions to unitholders, both of which could have a material adverse effect on our ability to make cash distributions.

Our debt levels may limit our flexibility in obtaining additional financing, pursuing other business opportunities and paying distributions to our unitholders.

As of December 31, 2015,2018, we had consolidated debt of approximately $671.7$1,077.3 million. We have the ability to incur additional debt. Please read “Item"Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources." Our level of debt could have important consequences to us, including the following:

    our ability to obtain additional financing, if necessary, for working capital, capital expenditures, acquisitions or other purposes may be impaired, or such financing may not be available on favorable terms;



we will need a substantial portion of our cash flows to make principal and interest payments on our debt, reducing the funds that would otherwise be available for operations, future business opportunities and distributions to unitholders;



our debt level may make us more vulnerable than our competitors with less debt to competitive pressures or a downturn in our industry or the economy generally;



our debt level may limit our flexibility in responding to changing business and economic conditions; and



if we are unable to satisfy the restrictions included in any of our financing agreements or are otherwise in default under any of those agreements, as a result of our debt levels or otherwise, we will not be able to make cash distributions to our unitholders, notwithstanding our stated cash distribution policy.

Our ability to service our debt depends upon, among other things, our future financial and operating performance, which is affected by prevailing economic conditions and financial, business,


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regulatory and other factors, some of which are beyond our control. If our operating results are not sufficient to service our current or future indebtedness, we will be forced to take actions such as reducing distributions, reducing or delaying our business activities, acquisitions, investments or capital expenditures, selling assets, restructuring or refinancing our debt, or seeking additional equity capital or bankruptcy protection. We may not be able to effect any of these remedies on satisfactory terms, or at all.

Financing agreements containing operating and financial restrictions may restrict our business and financing activities.

The operating and financial restrictions and covenants in our financing agreements and any future financing agreements could adversely affect our ability to finance future operations or capital needs or to engage, expand or pursue our business activities. For example, the financing agreements may restrict the ability of us and our subsidiaries to:

    incur or guarantee indebtedness;



change ownership or structure, including mergers, consolidations, liquidations and dissolutions;



make dividends or distributions;



make certain negative pledges and grant certain liens;



sell, transfer, assign or convey assets;



make certain investments; and



enter into a new line of business.

In addition, our financing agreements require us to comply with certain financial ratios and tests, including, among others, maintaining a minimum liquidity, maintaining positive working capital, ensuring that EBITDA exceeds interest payable, maintaining a minimum collateral value, and maintaining a minimum book equity ratio. Our ability to comply with the restrictions and covenants, including financial ratios and tests, contained in our financing agreements is dependent on future performance and may be affected by events beyond our control, including prevailing economic, financial and industry conditions. If market or other economic conditions deteriorate, our ability to comply with these covenants may be impaired.

If we are unable to comply with the restrictions and covenants in the agreements governing our indebtedness or in current or future debt financing agreements, there could be a default under the terms of those agreements. If a default occurs under these agreements, lenders could terminate their commitments to lend and/or accelerate the outstanding loans and declare all amounts borrowed due and payable. This could lead to cross-defaults under other financing agreements and result in obligations becoming due and commitments being terminated under such agreements. We have pledged our vessels as security for our outstanding indebtedness. If our lenders were to foreclose on our vessels in the event of a default, this may adversely affect our ability to finance future operations or capital needs or to engage in, expand or pursue our business activities. If any of these events occur, we cannot guarantee that our assets will be sufficient to repay in full all of our outstanding indebtedness, and we may be unable to find alternative financing. Even if we could obtain alternative financing, that financing might not be on terms that are favorable or acceptable. Any of these events would adversely affect our ability to make cash distributions to our unitholders and cause a decline in the market price of our common units. Please read “Item"Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources."


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Restrictions in our debt agreements may prevent us or our subsidiaries from paying distributions.

The payment of principal and interest on our debt reduces cash available for distribution to us and on our units. In addition, our and our subsidiaries’subsidiaries' financing agreements prohibit the payment of distributions upon the occurrence of the following events, among others:

    failure to pay any principal, interest, fees, expenses or other amounts when due;



failure to notify the lenders of any material oil spill or discharge of hazardous material, or of any action or claim related thereto;



breach or lapse of any insurance with respect to vessels securing the facilities;



breach of certain financial covenants;



failure to observe any other agreement, security instrument, obligation or covenant beyond specified cure periods in certain cases;



default under other indebtedness;



bankruptcy or insolvency events;



failure of any representation or warranty to be correct;



a change of ownership, as defined in the applicable agreement; and



a material adverse change, as defined in the applicable agreement.

For more information regarding our financing agreements, please read “Item"Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources.

"

The failure to consummate or integrate acquisitions in a timely and cost-effective manner could have an adverse effect on our financial condition and results of operations.

Acquisitions that expand our fleet are an important component of our strategy. For example, we have an option to purchase theRaquel Knutsen from KNOT if we are able to reach an agreement with KNOT regarding its purchase price. Pursuant to the omnibus agreement we entered into with KNOT in connection with our IPO (the “Omnibus Agreement”), we have the right to purchase theRaquel Knutsen at any time within 24 months after KNOT notifies our board of directors of its acceptance by its charterer. We are not obligated to purchase theRaquel Knutsen at the applicable determined price, and, accordingly, we may not complete the purchase of the vessel. Furthermore, even if we are able to agree on a price with KNOT, there are no assurances that we will be able to obtain adequate financing on terms that are acceptable to us.

We believe that other acquisition opportunities may arise from time to time, and any such acquisition could be significant. Any acquisition of a vessel or business may not be profitable after the time of acquisition and may not generate cash flows sufficient to justify the investment. In addition, our acquisition growth strategy exposes us to risks that may harm our business, financial condition, results of operations and ability to make cash distributions to our unitholders, including risks that we may:

    fail to realize anticipated benefits, such as new customer relationships, cost-savings or cash flow enhancements;



be unable to attract, hire, train or retain qualified shore and seafaring personnel to manage and operate our growing business and fleet;



decrease our liquidity by using a significant portion of available cash or borrowing capacity to finance acquisitions;



significantly increase our interest expense or financial leverage if we incur additional debt to finance acquisitions;



incur or assume unanticipated liabilities, losses or costs associated with the business or vessels acquired; or



incur other significant charges, such as impairment of goodwill or other intangible assets, asset devaluation or restructuring charges.

In addition, unlike newbuilds, existing vessels typically do not carry warranties as to their condition. While we generally inspect existing vessels prior to purchase, such an inspection would normally not


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provide us with as much knowledge of a vessel’svessel's condition as we would possess if it had been built for us and operated by us during its life. Repairs and maintenance costs for existing vessels are difficult to predict and may be substantially higher than for vessels we have operated since they were built. These costs could decrease our cash flows and reduce our liquidity.

Certain acquisition and investment opportunities may not result in the consummation of a transaction. In addition, we may not be able to obtain acceptable terms for the required financing for any such acquisition or investment that arises. We cannot predict the effect, if any, that any announcement or consummation of an acquisition would have on the trading price of our common units. Our future acquisitions could present a number of risks, including the risk of incorrect assumptions regarding the future results of acquired vessels or businesses or expected cost reductions or other synergies expected to be realized as a result of acquiring vessels or businesses, the risk of failing to successfully and timely integrate the operations or management of any acquired vessels or businesses and the risk of diverting management’smanagement's attention from existing operations or other priorities. We may also be subject to additional costs related to compliance with various international laws in connection with such acquisition. If we fail to consummate and integrate our acquisitions in a timely and cost-effective manner, our business, financial condition, results of operations and cash available for distribution could be adversely affected.

Our charters are subject to early termination under certain circumstances and any such termination could have a material adverse effect on our results of operations and cash available for distribution to unitholders.

Our        As of April 10, 2019, our fleet consists of tensixteen shuttle tankers. If any of our vessels are unable to generate revenues as a result of the expiration or termination of its charter or sustained periods of off-hire time, our results of operations and financial condition could be materially adversely affected. Each of our charters terminates automatically if the applicable vessel is lost or missing or damage to the vessel results in a constructive total loss. The customer, under certain circumstances, may also have an option to terminate a time charter if the vessel is requisitioned by any government for a period of time in excess of the time period specified in the time charter or if at any time we are in default under the time charter. In addition, either party may usually terminate a charter in the event of the outbreak of war between specified countries. Under our bareboat charters, the charter is deemed terminated as of the date of any compulsory acquisition of the vessel or requisition for title by any governmental or other competent authority. For more information regarding the termination of our charters, please read “Item"Item 4. Information on the Partnership—Business Overview—Charters—Termination.

"

We may experience operational problems with vessels that reduce revenue and increase costs.

Shuttle tankers are complex and their operation is technically challenging. Marine transportation operations are subject to mechanical risks and problems. Operational problems may lead to loss of revenue or higher than anticipated operating expenses or require additional capital expenditures. Any of these results could harm our business, financial condition, results of operations and ability to make cash distributions to our unitholders.

We currently derive all of our time charter and bareboat revenues from sixseven customers, and the loss of any such customers could result in a significant loss of revenues and cash flow.

We currently derive all of our time charter and bareboat revenues from sixseven customers. For the year ended December 31, 2015,2018, Eni Trading and Shipping S.p.A. ("ENI"), Fronape International Company, a subsidiary of Petrobras Transporte S.A. (“Transpetro”("Transpetro"), Eni Trading and Shipping S.p.A. (“ENI”), StatoilEquinor ASA (“Statoil”("Equinor"), Repsol Sinopec Brasil, S.A. (“Repsol”("Repsol"), Brazil Shipping I Limited, a subsidiary of Royal Dutch Shell, formerly BG Group Plc (“BG Group”("Shell"), Standard Marine Tønsberg AS a Norwegian subsidiary of ExxonMobil (“ExxonMobil”("ExxonMobil"), and KNOTGalp Sinopec Brazil Services B.V ("Galp") accounted for approximately 26%16%, 30%17%, 15%8%, 13%, 3%29%, 2%6% and 11%, respectively, of our revenues.


Petrobras, the Brazil state-controlled oil company and the parent companyTable of Transpetro, is alleged to have participated in a widespread corruption scandal involving billions of dollars of improper payments to Brazilian politicians and political parties. Petrobras has also announced significant decreases in its five-year capital expenditure budget and that it is reducing the pace of some projects and cancelling others. It is uncertain at this time how this scandal may affect Petrobras, its performance of its existing charters or the development of new projects. Any adverse effect on Petrobras’ ability to perform under existing charters with us could harm us.Contents

If we lose a key customer, we may be unable to obtain replacement long-term charters and may become subject to the volatile spot market, which is highly competitive and subject to significant price fluctuations. In addition, if a customer exercises its right to terminate a charter, we may be unable to re-charter such vessel on terms as favorable to us as those of the terminated charter. The loss of any of our key customers could have a material adverse effect on our business, financial condition, results of operations and ability to make cash distributions to our unitholders.unitholder

Due to the recent decline in oil        Oil prices can be volatile, and this could affect the equity value of many of our customers substantially declined in 2015.customers. The combination of a reduction of cash flow resulting from the declining oillower prices, a reduction in borrowing bases under anyrelated credit facilities and the limited or lack of availability of debt or equity financing could potentially reduce the ability of our customers to make charter payments. Any further decline in the price of oil, or sustained current prices, could result in similar effects on our customers or other third parties with which we do business,payments, which in turn could harm our business, results of operations and financial condition.

We depend on subsidiaries of KNOT to assist us in operating our businesses and competing in our markets.

We and our operating subsidiaries have entered into various services agreements with certain subsidiaries of KNOT, including KNOT Management. Under these agreements the subsidiaries provide us with certain administrative, financial and other services. Our operating subsidiaries are provided with substantially all of their crew, technical and commercial management services (including vessel maintenance, periodic drydocking, cleaning and painting, performing work required by regulations and human resources and financial services) and other advisory and technical services, including the sourcing of new contracts and renewals of existing contracts. Our operational success and ability to execute our growth strategy depends significantly upon the satisfactory performance of these services by the KNOT subsidiaries. Our business will be harmed if such subsidiaries fail to perform these services satisfactorily or if they stop providing these services to us or our operating subsidiaries.

Our ability to compete to enter into new charters and expand our customer relationships depends largely on our ability to leverage our relationship with KNOT and its reputation and relationships in the shipping industry. If KNOT suffers material damage to its reputation or relationships, it may harm the ability of us or our subsidiaries to:

    renew existing charters upon their expiration;



obtain new charters;



successfully contract with shipyards;



obtain financing on commercially acceptable terms; or



maintain satisfactory relationships with suppliers and other third parties.

If our ability to do any of the things described above is impaired, it could have a materially adverse effect on our business, financial condition, results of operations and ability to make cash distributions to our unitholders.

Our growth depends on continued growth in demand for shuttle tanker transportation services.

Our growth strategy focuses on expansion in the shuttle tanker sector. Accordingly, our growth depends on continued growth in the demand for offshore oil transportation services. Factors beyond our control that affect the offshore oil transportation industry may have a significant impact on our business, financial condition, results of operations and ability to make cash distributions to our unitholders. Fluctuations in the hire rate we can charge our customers result from changes in the supply of carrying capacity and demand for the crude oil carried. In particular, continuedIf a sustained period of reduced demand for crude oil and offshore oil transportation services were to occur it would have a material adverse effect on our future growth and could harm our business, results of operations and financial condition. The factors affecting supply and demand for shuttle tankers and supply and demand for


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crude oil transported by shuttle tankers are outside of our control, and the nature, timing and degree of changes in industry conditions are unpredictable.

The factors that influence the demand for shuttle tanker capacity include:

    changes in the actual or projected price of oil, which could impact the exploration for or development of new offshore oil fields or the production of oil at certain fields we service;



delayed production start on offshore fields under development;



levels of demand for and production of oil, which, among other things, is affected by competition from alternative sources of energy, other factors making consumption of oil more or less attractive or energy conservation measures;



changes in the production of oil in areas linked by pipelines to consuming areas, the extension of existing, or the development of new, pipeline systems in markets we may serve, or the conversion of existing non-oil pipelines to oil pipelines in those markets;



changes in laws and regulations affecting the shuttle tanker industry;



global and regional economic and political conditions, particularly in oil-consuming regions, as well as environmental concerns and regulations, which could impact the supply of oil and gas as well as the demand for various types of vessels; and



changes in trading patterns, including changes in the distances that cargoes are transported.

The factors that influence the supply of shuttle tanker capacity include:

    the number of deliveries of new vessels under construction or on order;



the scrapping rate of older vessels;



oil and gas company policy with respect to technical vessel requirements; and



the number of vessels that are off-hire.

A continuation of the recent significant declinesDeclines in oil prices may adversely affect our growth prospects and results of operations.

In 2015, global crude oil prices were volatile and declined significantly. A continuation of lower oil prices or a further        Any significant decline in oil prices may adversely affect our business, results of operations and financial condition and our ability to make cash distributions, as a result of, among other things:

    a reduction in exploration for or development of new offshore oil fields, or the delay or cancelation of existing offshore projects as energy companies lower their capital expenditures budgets, which may reduce our growth opportunities;



lower demand for shuttle tankers, which may reduce available charter rates and revenue to us upon redeployment of our vessels following expiration or termination of existing contracts or upon the initial chartering of vessels;



customers potentially seeking to renegotiate or terminate existing vessel contracts, or failing to extend or renew contracts upon expiration;



the inability or refusal of customers to make charter payments to us due to financial constraints or otherwise; or



declines in vessel values, which may result in losses to us upon vessel sales or impairment charges against our earnings.

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The current state of the global financial markets and current economic conditions may impair our customers’customers' and suppliers’suppliers' ability to pay for our services and could have a material adverse effect on our revenue, profitability and financial position.

We depend on our customers’customers' willingness and ability to fund operating and capital expenditures to provide crude oil shuttle tankers for new or expanding offshore projects. Existing and future adverse economic conditions, including current low oil prices, may lead to a decline in our customers’customers' operations or ability to pay for our services, which could result in decreased demand for our vessels. There has historically been a strong link between the development of the world economy and demand for energy, including oil and natural gas.

Global financial markets and economic conditions have been severely disrupted and volatile in recent years and remain subject to significant vulnerabilities, such as the deterioration of fiscal balances and the rapid accumulation of public debt, continued deleveraging in the banking sector and a limited supply of credit. Credit markets as well as the equity and debt capital markets were exceedingly distressed during 2008 and 2009 and while these markets have been volatile since that time.subsequently recovered, periods of volatility have subsequently occurred. Uncertainty surrounding the continuing sovereign debt crisis in Greece and other European Union member countries, and turmoil and unrest in the Middle East, Africa, Korea, the Ukraine and elsewhere and the socioeconomic and political crisis in Venezuela have led to increased volatility in global credit and equity markets. An extended period of adverse development in the outlook for European countries or Brazil could reduce the overall demand for oil and have a negative impact on our customers. Potential developments, or market perceptions concerning these and related issues, could affect our business, financial position, results of operations and ability to make cash distributions to our unitholders.

Any global financial or credit crisis or disruption may further reduce the availability of liquidity and credit to fund the continuation and expansion of industrial business operations worldwide. Shortage of liquidity and credit combined with uncertainty in worldwide equity markets could lead to an extended worldwide economic recession. Such deterioration of the worldwide economy could result in reduced demand for oil and natural gas, exploration and production activity and transportation of oil and natural gas that could lead to a decrease in the hire rate earned by our vessels and a decrease in new charter activity. In addition, any adverse development in the global financial markets or deterioration in economic conditions might adversely impact our ability to issue additional equity at prices that will not be dilutive to our existing unitholders or preclude us from issuing equity at all.

We also cannot be certain that additional financing will be available if needed and to the extent required, on acceptable terms or at all. As a result of the disruptions in the credit markets and higher capital requirements, many lenders have increased margins on lending rates, enacted tighter lending standards, required more restrictive terms (including higher collateral ratios for advances, shorter maturities and smaller loan amounts), or have refused to refinance existing debt at all. Furthermore, certain banks that have historically been significant lenders to the shipping industry have reduced or ceased lending activities in the shipping industry. If additional financing is not available when needed, or is available only on unfavorable terms, we may be unable to meet our obligations as they come due or we may be unable to expand our existing business, complete shuttle tanker acquisitions or otherwise take advantage of business opportunities as they arise.

Furthermore, any uncertainty in the financial markets could have an impact on our customers and/or suppliers including, among other things, causing them to fail to meet their obligations to us. Similarly, any shortage of credit could affect lenders participating in our financing agreements, making them unable to fulfill their commitments and obligations to us. Any reductions in activity owing to such conditions or failure by our customers, suppliers or lenders to meet their contractual obligations to us could adversely affect our business, financial position, results of operation and ability to make cash distributions to our unitholders.


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The results of the United Kingdom's ("U.K.'s") referendum on withdrawal from the European Union ("EU") may have a negative effect on global economic conditions, financial markets and our business.

        In June 2016, a majority of voters in the U.K. elected to withdraw from the EU in a national referendum, and in March 2017, the government of the U.K. formally initiated the process. The referendum was advisory, and the terms of any withdrawal are subject to a negotiation period that could last at least two years after the March 2017 initiation. There is currently no agreement in place regarding the withdrawal, creating significant uncertainty about the future relationship between the U.K. and the EU, including with respect to the laws and regulations that will apply as the U.K. determines which EU derived laws to replace or replicate in the event of a withdrawal. Additionally, it remains possible that the U.K.'s membership in the EU ends without any agreement between the U.K. and the EU on the terms of their relationship going forward. The referendum has also given rise to calls for the governments of other EU member states to consider withdrawal. These developments, or the perception that any of them could occur, have had and may continue to have a material adverse effect on global economic conditions and the stability of global financial markets, and may significantly reduce global market liquidity and restrict the ability of key market participants to operate in certain financial markets. Any of these factors could depress economic activity and restrict our access to capital, which could have a material adverse effect on our business, financial condition and operating results.

Our growth depends on our ability to expand relationships with existing customers and obtain new customers, for which we face substantial competition.

One of our principal objectives is to enter into additional long-term, fixed-rate charters. The process of obtaining new long-term charters is highly competitive, usually involving an intensive screening process and competitive bids and extending for several months. Shuttle tanker charters are awarded based upon a variety of factors relating to the vessel operator, including:

    industry relationships and reputation for customer service and safety;



experience and quality of ship operations;



quality, experience and technical capability of the crew;



relationships with shipyards and the ability to get suitable berths;



construction management experience, including the ability to obtain on-time delivery of new vessels according to customer specifications;



willingness to accept operational risks pursuant to the charter, among other things such as allowing termination of the charter for force majeure events; and



competitiveness of the bid in terms of overall price.

Our ability to win new charters depends upon a number of factors, including our ability to:

    leverage our relationship with KNOT and its reputation and relationships in the shipping industry;



successfully manage our liquidity and obtain the necessary financing to fund our growth;



attract, hire, train and retain qualified personnel and ship management companies to manage and operate our fleet;



identify and consummate desirable acquisitions, joint ventures or strategic alliances; and



identify and capitalize on opportunities in new markets.

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We expect substantial competition for providing services for potential shuttle tanker projects from a number of experienced companies. This increased competition may cause greater price competition for charters. As a result of these factors, we may be unable to expand our relationships with existing customers or to obtain new customers on a profitable basis, if at all, which would have a material adverse effect on our business, financial condition, results of operations and ability to make cash distributions to our unitholders.

An increase in the global supply of shuttle tanker capacity without a commensurate increase in demand may have an adverse effect on hire rates and the values of our vessels, which could have a material adverse effect on our business, financial condition, results of operations and ability to make cash distributions to our unitholders.

The supply of shuttle tankers in the industry is affected by, among other things, assessments of the demand for these vessels by oil companies. Any over-estimation of demand for vessels may result in an excess supply of new shuttle tankers. This may, in the long term when existing contracts expire, result in lower hire rates and depress the values of our vessels. In such an event, our business, financial condition, results of operations and ability to make cash distributions to our unitholders may be adversely affected.

During periods of high utilization and high hire rates, industry participants may increase the supply of shuttle tankers by ordering the construction of new vessels. This may result in an over-supply of shuttle tankers and may cause a subsequent decline in utilization and hire rates when the vessels enter the market. Lower utilization and hire rates could adversely affect revenues and profitability. Prolonged periods of low utilization and hire rate could also result in the recognition of impairment charges on shuttle tankers if future cash flow estimates, based upon information available at the time, indicate that the carrying value of these shuttle tankers may not be recoverable. Such impairment charge may cause lenders to accelerate loan payments under our financing agreements, which could adversely affect our business, financial condition, results of operations and ability to make cash distributions to our unitholders.

The required drydocking of our vessels could be more expensive and time consuming than we anticipate, which could adversely affect our cash available for distribution to unitholders.

We must periodically drydock each of our vessels for inspection, repairs and maintenance and any modifications required to comply with industry certification or governmental requirements. Generally, we drydock each vessel every 60 months until the vessel is 15 years old and every 30 months thereafter. The required drydocking of our vessels could be more expensive and time consuming than we anticipate, which could adversely affect our cash available for distribution. The drydocking of our vessels requires significant capital expenditures and results in loss of revenue while our vessels are off-hire. Any significant increase in the number of days of off-hire due to such drydocking or in the costs of any repairs could have a material adverse effect on our ability to pay distributions to our unitholders. Although we do not anticipate that more than one of the vessels in our current fleet will be out of service at any given time, we may underestimate the time required to drydock any of our vessels or unanticipated problems may arise. If more than one of our vessels is required to be out of service at the same time, if a vessel is drydocked longer than expected or if the cost of repairs during drydocking is greater than budgeted, our cash available for distribution to unitholders could be adversely affected.

We may be unable to re-charter our vessels upon termination or expiration of their existing charters.

We are dependent upon charters for our vessels to generate revenues and we may be adversely affected if we fail to renew or are unsuccessful in winning new charters, or if our existing charters are terminated. Our ability to re-charter our shuttle tankers following expiration of existing charters and


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the rates payable upon any renewal or replacement charters depends upon, among other things, the state of the shuttle tanker market. For example, an oversupply of shuttle tankers can significantly reduce their charter rates. A termination or renegotiation of our existing charters or a failure to secure new employment at the expiration of our current charters may have a negative effect on our business, financial condition, results of operations and ability to make cash distributions to our unitholders.

Compliance with safety and other vessel requirements imposed by classification societies may be very costly and may adversely affect our business.

The hull and machinery of every large, oceangoing commercial vessel must be classed by a classification society authorized by its country of registry. The classification society certifies that a vessel is safe and seaworthy in accordance with the applicable rules and regulations of the country of registry of the vessel and the International Convention for Safety of Life at Sea (“SOLAS”("SOLAS"). All our vessels are certified either by DNV GL Group AS (“("DNV GL”GL") or by the American Bureau of Shipping ("ABS").

As part of the certification process, a vessel must undergo annual surveys, intermediate surveys and special surveys. In lieu of a special survey, a vessel’svessel's machinery may be on a continuous survey cycle, under which the machinery would be surveyed periodically over a five-year period. Each of the vessels in our existing fleet is on a planned maintenance system approval, and as such the classification society attends onboard once every year to verify that the maintenance of the equipment onboard is done correctly. Each of the vessels in our existing fleet is required to be qualified within its respective classification society for drydocking once every five years subject to an intermediate underwater survey done using an approved diving company in the presence of a surveyor from the classification society.

If any vessel does not maintain its class or fails any annual survey, intermediate survey or special survey, the vessel will be unable to trade between certain ports and will be unemployable. We would lose revenue while the vessel was off-hire and incur costs of compliance. This would negatively impact our revenues and reduce our cash available for distribution to unitholders.

The value of our vessels may decline, which could adversely affect our operating results.

Vessel values for shuttle tankers can fluctuate substantially over time due to a number of different factors, including:

    the cost of newbuildings;



prevailing economic conditions in oil and energy markets;



a substantial or extended decline in demand for oil;



increases in the supply of vessel capacity;



the cost of retrofitting or modifying existing vessels, as a result of technological advances in vessel design or equipment, changes in applicable environmental or other regulations or standards, or otherwise; and



a decrease in oil reserves in the fields and other fields in which our shuttle tankers might otherwise be deployed.

If operation of a vessel is not profitable, or if we cannot redeploy a vessel at attractive rates upon termination of its charter, rather than continue to incur costs to maintain and finance the vessel, we may seek to dispose of it. Our inability to dispose of the vessel at a reasonable value could result in a loss on its sale and adversely affect our business, financial condition, results of operations and ability to make cash distributions to our unitholders. Additionally, lenders may accelerate loan repayments should there be a loss in the market value of our vessels. Such repayment could adversely affect our business, financial condition, results of operations and ability to make cash distributions to our unitholders.


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Further, if we determine at any time that a vessel’svessel's future useful life and earnings require us to impair its value on our financial statements, we may need to recognize a significant charge against our earnings. We review vessels and equipment for impairment whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable, which occurs when the asset’sasset's carrying value is greater than the future undiscounted cash flows the asset is expected to generate over its remaining useful life. For example, during the three months ended June 30, 2015, we concluded that indicators of impairment were present due to a significant reduction in the price of our common units. Consequently, we performed an interim vessel and goodwill impairment analysis as of June 30, 2015 on our fleet, and concluded that although there was no impairment to the vessels’ values, the carrying value of goodwill exceeded its fair value, and a goodwill impairment charge of $6.2 million was recognized in 2015.

Climate change and greenhouse gas restrictions may adversely impact our operations and markets.

Due to concern over the risk of climate change, a number of countries and the International Maritime Organization (the “IMO”"IMO"), the United Nations agency that regulates international shipping, have adopted, or are considering the adoption of, regulatory frameworks to reduce greenhouse gas emissions from vessels. These regulatory measures include, among others, adoption of cap and trade regimes, carbon taxes, increased efficiency standards and incentives or mandates for renewable energy. The Paris Agreement, which was announced by the Parties to the United Nations Framework Convention on Climate Change in December 2015, does not cover international shipping, howevershipping. However, in 2016, the IMO has subsequently reaffirmed its strong commitment to continue to work to address greenhouse gas emissions from ships engaged in international trade.trade and in 2018 adopted an initial strategy designed to reduce the emission of greenhouse gases from vessels, including short-term, mid-term and long-term candidate measures with a vision of reducing and phasing out greenhouse gas emissions from vessels as soon as possible in the 21st Century. Compliance with changes in laws, regulations and obligations relating to climate change could increase our costs related to operating and maintaining our vessels and require us to install new emission controls, acquire allowances or pay taxes related to our greenhouse gas emissions or administer and manage a greenhouse gas emissions program. Revenue generation and strategic growth opportunities may also be adversely affected.

Adverse effects upon the oil industry relating to climate change, including growing public concern about the environmental impactand other impacts of climate change, may also adversely affect demand for our shuttle tanker services. Although we do not expect that demand for oil will lessen dramatically over the short term, in the long term climate change may reduce the demand for oil or increased regulation of greenhouse gases may create greater incentives for use of alternative energy sources. Any long-term material adverse effect on the oil industry could have a significant financial and operational adverse impact on our business that we cannot predict with certainty at this time.

Our international operations expose us to political, governmental and economic instability, which could harm our operations.

Our operations are conducted in various countries, and they may be affected by economic, political and governmental conditions in the countries where we engage in business or where our vessels are registered. Any disruption caused by these factors could harm our business, including by reducing the levels of oil exploration, development and production activities in these areas. We may derive some of our revenues from shipping oil from politically unstable regions. Conflicts in these regions have included attacks on ships and other efforts to disrupt shipping. Hostilities or other political instability in regions where we operate or where we may operate could have a material adverse effect on the growth of our business, financial condition, results of operations and ability to make cash distributions to our unitholders. In addition, tariffs, trade embargoes and other economic sanctions by the United States or other countries as a result of terrorist attacks, hostilities or otherwise may limit trading activities with those countries, which could also harm our business, financial condition, results of operations and ability to make cash distributions to our unitholders. Finally, a government could requisition one or more of our vessels, which is most likely during war or national emergency. Any such requisition would cause a loss of the vessel and/or a termination of the charter and could harm our business, financial condition, results of operations and ability to make cash distributions to our unitholders.


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Marine transportation is inherently risky, particularly in the extreme conditions in which our vessels operate. An incident involving significant loss of product or environmental contamination by any of our vessels could harm our reputation and business.

Vessels and their cargoes and the oil production facilities we service are at risk of being damaged or lost because of events such as:

    marine disasters;



bad weather;



mechanical failures;



grounding, capsizing, fire, explosions and collisions;



piracy;



human error; and



war and terrorism.

TheBodil Knutsen,theHilda Knutsen, theTorill Knutsenand theIngrid Knutsen currently operate in the North Sea. Harsh weather conditions in this region and other regions in which our vessels operate may increase the risk of collisions, oil spills or mechanical failures.

An accident involving any of our vessels could result in any of the following:

    death or injury to persons, loss of property or damage to the environment and natural resources;



delays in the delivery of cargo;



loss of revenues from charters;



liabilities or costs to recover any spilled oil or other petroleum products and to restore the ecosystem affected by the spill;



governmental fines, penalties or restrictions on conducting business;



higher insurance rates; and



damage to our reputation and customer relationships generally.

Any of these results could have a material adverse effect on our business, financial condition, results of operations and ability to make cash distributions to our unitholders. In addition, any damage to, or environmental contamination involving, oil production facilities serviced could suspend that service and result in loss of revenues.

Our insurance may not be sufficient to cover losses that may occur to our property or as a result of our operations.

The operation of shuttle tankers is inherently risky. All risks may not be adequately insured against, and any particular claim may not be paid by insurance. Any claims relating to our operations covered by insurance would be subject to deductibles, and since it is possible that a large number of claims may be brought, the aggregate amount of these deductibles could be material. Certain insurance is maintained through mutual protection and indemnity associations (“("P&I clubs”clubs"), and as a member of such associations we may be required to make additional payments over and above budgeted premiums if member claims exceed association reserves

We may be unable to procure adequate insurance at commercially reasonable rates in the future. For example, more stringent environmental regulations have led in the past to increased costs for, and in the future may result in the lack of availability of, insurance against risks of environmental damage


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or pollution. A catastrophic oil spill or marine disaster could exceed the insurance, and any uninsured or underinsured loss could harm our business, financial condition, results of operations and ability to make cash distributions to our unitholders. In addition, the insurance may be voidable by the insurers as a result of certain actions, such as vessels failing to maintain certification with applicable maritime self-regulatory organizations.

Changes in the insurance markets attributable to terrorist attacks may also make certain types of insurance more difficult to obtain. In addition, the insurance that may be available may be significantly more expensive than existing coverage.

Terrorist attacks, piracy, increased hostilities or war could lead to further economic instability, increased costs and disruption of business.

Terrorist attacks, piracy and the current conflicts in the Middle East, and other current and future conflicts, may adversely affect our business, financial condition, results of operations and ability to raise capital and future growth. Continuing hostilities in the Middle East may lead to additional armed conflicts or to further acts of terrorism and civil disturbance in the United States or elsewhere, which may contribute further to economic instability and disruption of oil production and distribution, which could result in reduced demand for our services.

In addition, oil production facilities, shipyards, vessels, pipelines, oil fields or other infrastructure could be targets of future terrorist attacks and our vessels could be targets of pirates or hijackers. Any such attacks could lead to, among other things, bodily injury or loss of life, vessel or other property damage, increased vessel operational costs, including insurance costs, and the inability to transport oil to or from certain locations. Terrorist attacks, war, piracy, hijacking or other events beyond our control that adversely affect the distribution, production or transportation of oil to be shipped by us could entitle customers to terminate their charters, which would harm our business, financial condition, results of operations and ability to make cash distributions to our unitholders.

Acts of piracy on ocean-going vessels have recently increased in frequency, which could adversely affect our business, financial condition, results of operations and ability to make cash distributions to our unitholders.

Acts of piracy have historically affected ocean-going vessels trading in regions of the world such as the South China Sea and the Gulf of Aden off the coast of Somalia. If such piracy attacks result in regions in which our vessels are deployed being named on the Joint War Committee Listed Areas, war-risk insurance premiums payable for such coverage could increase significantly and such insurance coverage might become more difficult to obtain. In addition, crew costs, including costs that may be incurred to the extent we employ onboard security guards, could increase in such circumstances. We may not be adequately insured to cover losses from these incidents, which could have a material adverse effect on us. In addition, hijacking as a result of an act of piracy against our vessels, or an increase in cost or unavailability of insurance for our vessels, could have a material adverse impact on our business, financial condition, results of operations and ability to make cash distributions to our unitholders.

Vessels transporting oil are subject to substantial environmental and other regulations, which may significantly limit operations or increase expenses.

Our operations are affected by extensive and changing international, national and local environmental protection laws, regulations, treaties and conventions in force in international waters and the jurisdictional waters of the countries in which our vessels operate, as well as the countries of our vessels’vessels' registration, including those governing oil spills, air emissions, discharges to air and water and the handling and disposal of hazardous substances and wastes. Many of these requirements are designed to reduce the risk of oil spills and other pollution.


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In addition, we believe that the heightened environmental, qualitysafety and security concerns of insurance underwriters, regulators and charterers will generally lead to additional regulatory requirements, including enhanced risk assessment and security requirements and greater inspection and safety requirements on vessels. These requirements are likely to add incremental costs to our operations and the failure to comply with these requirements may affect the ability of our vessels to obtain the required certificates for entry into the different ports where we operate and could also impact our ability to obtain insurance. We expect to incur substantial expenses in complying with these laws and regulations, including expenses for vessel modifications and changes in operating procedures.

These requirements can affect the resale value or useful lives of our vessels, require a reduction in cargo capacity, ship modifications or operational changes or restrictions, lead to decreased availability of insurance coverage for environmental matters or result in the denial of access to certain jurisdictional waters or ports or detention in certain ports.

Under local, national and foreign laws, as well as international treaties and conventions, we could incur material liabilities, including cleanup obligations, natural resource damage claims and fines and penalties in the event that there is a release of petroleum or hazardous substances from our vessels or otherwise in connection with our operations. We could also become subject to personal injury or property damage claims relating to the release of petroleum or hazardous substances associated with our operations. In addition, oil spills and failure to comply with applicable laws and regulations may result in administrative and civil penalties, criminal sanctions or the suspension or termination of our operations, including, in certain instances, seizure or detention of our vessels. Please read “Item"Item 4. Information on the Partnership—Business Overview—Environmental and Other Regulation."

Exposure to currency exchange rate fluctuations results in fluctuations in cash flows and operating results.

Our reporting currency and the functional currency of our operating subsidiaries is the U.S. Dollar. Certain of our operating subsidiaries are party to technical management agreements with KNOT Management, which govern the crew, technical and commercial management of the vessels in our fleet. Under the technical management agreements, KNOT Management is paid for reasonable direct and indirect expenses incurred in providing the services, including operating expenses relating to our fleet. A majority of the operating expenses are in currencies other than the U.S. Dollar. Fluctuating exchange rates may result in increased payments by us under the services agreements if the strength of the U.S. Dollar declines relative to such other currencies.

Many seafaring employees are covered by collective bargaining agreements and the failure to renew those agreements or any future labor agreements may disrupt operations and adversely affect our business, financial condition, results of operations and ability to make cash distributions to our unitholders.

A significant portion of seafarers that crew certain of our vessels are employed under collective bargaining agreements. We and our operating subsidiaries may become subject to additional labor agreements in the future. We and our operating subsidiaries may suffer labor disruptions if relationships deteriorate with the seafarers or the unions that represent them. The collective bargaining agreements may not prevent labor disruptions, particularly when the agreements are being renegotiated. Salaries for seafarers are typically renegotiated annually or bi-annually, and higher compensation levels will increase our costs of operations. Although these negotiations have not caused labor disruptions in the past, any future labor disruptions could harm our operations and could have a material adverse effect on our business, financial condition, results of operations and ability to make cash distributions to our unitholders.


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KNOT may on our behalf be unable to attract and retain qualified, skilled employees or crew necessary to operate our business or may have to pay substantially increased costs for its employees and crew.

Our success depends in large part on KNOT’sKNOT's ability to attract, hire, train and retain highly skilled and qualified personnel. In crewing our vessels, we require technically skilled employees with specialized training who can perform physically demanding work. Competition to attract, hire, train and retain qualified crew members is intense, and crew manning costs continue to increase. If we are not able to increase our hire rates to compensate for any crew cost increases, our business, financial condition, results of operations and ability to make cash distributions to our unitholders may be adversely affected. Any inability we experience in the future to attract, hire, train and retain a sufficient number of qualified employees could impair our ability to manage, maintain and grow our business.

Our current and incoming Chief Executive Officer and Chief Financial Officer facesface conflicts in the allocation of histheir time to our business.

John Costain, our Chief Executive Officer and Chief Financial Officer, also serves as the Finance Director for Tankers (UK) Agencies Ltd. This companyGary Chapman, who will become our Chief Executive Officer and Chief Financial Officer on June 1, 2019, will also serve as as the Chief Financial Officer of Biggin Hill Airport Ltd. Each of these companies conducts substantial businesses and activities of its own in which the Partnership has no economic interest. As a result, there is competition for the time and effort of Mr. Costain.

Costain and Mr. Chapman.

Maritime claimants could arrest our vessels, which could interrupt our cash flow.

If we are in default on some kinds of obligations, such as those to our lenders, crew members, suppliers of goods and services to our vessels or shippers of cargo, these parties may be entitled to a maritime lien against one or more of our vessels. In many jurisdictions, a maritime lien holder may enforce its lien by arresting a vessel through foreclosure proceedings. In a few jurisdictions, claimants could try to assert “sister ship”"sister ship" liability against one vessel in our fleet for claims relating to another of our vessels. The arrest or attachment of one or more of our vessels could interrupt our cash flows and require us to pay to have the arrest lifted. Under some of our present charters, if the vessel is arrested or detained as a result of a claim against us, we may be in default of our charter and the charterer may terminate the charter. This would negatively impact our revenues and reduce our cash available for distribution to unitholders.

Lack of diversification and adverse developments in the shuttle tanker market or the conventional oil tanker market would negatively impact our results.

Although our vessels also are able to operate as conventional oil tankers, we are focused on dynamic positioning shuttle tankers. Due to our lack of diversification, any adverse development in the shuttle tanker market and/or the conventional oil tanker market could have a material adverse effect on our business, financial condition, results of operations and ability to make cash distributions to our unitholders.

If in the future our business activities involve countries, entities and individuals that are subject to restrictions imposed by the U.S. or other governments, we could be subject to enforcement action and our reputation and the market for our common units could be adversely affected.

The tightening of U.S. sanctions in recent years has affected non-U.S. companies. In particular, sanctions against Iran have been significantly expanded. In 2012, for example, the U.S. signed into law the Iran Threat Reduction and Syria Human Rights Act of 2012 (“TRA”("TRA"), which placed further restrictions on the ability of non-U.S. companies to do business or trade with Iran and Syria. A major provision in the TRA is that issuers of securities must disclose to the SEC in their annual and quarterly


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reports filed after February 6, 2013 if the issuer or “any affiliate”"any affiliate" has “knowingly”"knowingly" engaged in certain activities involving Iran during the timeframe covered by the report. This disclosure obligation is broad in scope in that it requires the reporting of activity that would not be considered a violation of U.S. sanctions as well as violative conduct and is not subject to a materiality threshold. The SEC publishes these disclosures on its website and the President of the United States must initiate an investigation in response to all disclosures. It should be noted that the U.S. and various other nations entered into a Joint Comprehensive Plan of Action (JCPOA) with Iran that provides for phased sanctions relief. On January 16, 2016, following verification that Iran had satisfied its commitments under the JCPOA, the U.S. lifted its nuclear-related “secondary” sanctions and the European Union also took action to lift its sanctions. As a result of sanctions relief, non-U.S. persons will be able to engage in business with Iran. Sanctions relief will not impact the SEC reporting requirements discussed above.

In addition to the sanctions against Iran, the U.S. also has sanctions that target other countries, entities and individuals. These sanctions have certain extraterritorial effects that need to be considered by non-U.S. companies. It should also be noted that other governments have implemented versions of U.S. sanctions. We believe that we are in compliance with all applicable sanctions and embargo laws and regulations imposed by the U.S., the United Nations or European Union countries and intend to maintain such compliance. However, there can be no assurance that we will be in compliance in the future, particularly as the scope of certain laws may be unclear and may be subject to changing interpretations. Any such violation could result in fines or other penalties and could result in some investors deciding, or being required, to divest their interest, or not to invest, in our common units. Additionally, some investors may decide to divest their interest, or not to invest, in our common units simply because we may do business with companies that do business in sanctioned countries. Investor perception of the value of our common units may also be adversely affected by the consequences of war, the effects of terrorism, civil unrest and governmental actions in these and surrounding countries.

Failure to comply with the U.S. Foreign Corrupt Practices Act, the UK Bribery Act, the anti-corruption provisions in the Norwegian Criminal Code and other anti-bribery legislation in other jurisdictions could result in fines, criminal penalties, contract termination and an adverse effect on our business.

We may operate in a number of countries throughout the world, including countries known to have a reputation for corruption. We are committed to doing business in accordance with applicable anti-corruption laws and have adopted a code of business conduct and ethics. We are subject, however, to the risk that we, our affiliated entities or our or their respective officers, directors, employees and agents may take actions determined to be in violation of anti-corruption laws, including the U.S. Foreign Corrupt Practices Act of 1977, the Bribery Act 2010 of the Parliament of the United Kingdom and the anti-corruption provisions of the Norwegian Criminal Code of 1902. Any such violation could result in substantial fines, sanctions, civil and/or criminal penalties, curtailment of operations in certain jurisdictions, and might adversely affect our business, results of operations or financial condition. In addition, actual or alleged violations could damage our reputation and ability to do business. Furthermore, detecting, investigating, and resolving actual or alleged violations is expensive and could consume significant time and attention of our senior management.

A cyber-attack could materially disrupt our business

We rely on information technology systems and networks, the majority of which are provided by KNOT Management, in our operations and the administration of our business. Our operations could be targeted by individuals or groups seeking to sabotage or disrupt our information technology systems and networks, or to steal data. A successful cyber-attack could materially disrupt our operations, including the safety of our operations, or lead to unauthorized release of information or alteration of information on our systems. Any such attack or other breach of our information technology systems could have a material adverse effect on our business, and results of operations.operations, financial condition, our reputation, or cash flows. We may be required to incur additional costs to modify or enhance our information technology systems or to prevent or remediate any such attacks.


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Our business is subject to complex and evolving laws, directives and regulations regarding privacy and data protection.

        We are subject to laws, directives, and regulations relating to the collection, use, retention, disclosure, security and transfer of personal data ("data protection laws"). These data protection laws, and their interpretation and enforcement, continue to evolve and may be inconsistent from jurisdiction to jurisdiction. For example, the General Data Protection Regulation ("GDPR"), which regulates the use of personally identifiable information, went into effect in the European Union ("EU") on May 25, 2018, applies globally to all of our activities conducted from an establishment in the EU, to related products and services that we offer to EU customers and to non-EU customers which offer services in the EU. Complying with the GDPR and similar emerging and changing data protection laws may cause us to incur substantial costs or require us to change our business practices. Noncompliance, or perceived noncompliance, with our legal obligations relating to data protection laws could result in penalties, fines, legal proceedings by governmental entities or others, loss of reputation, legal claims by individuals and customers and significant legal and financial exposure and could affect our ability to retain and attract customers. As noted above, we are also subject to the possibility of cyber attacks, which themselves may result in a violation of these laws.

Risks Inherent in an Investment in Us

KNOT and its affiliates may compete with us.

Pursuant to the Omnibus Agreement,omnibus agreement, we entered into with KNOT at the time of our IPO (the "Omnibus Agreement"), KNOT and its controlled affiliates (other than us, our general partner and our subsidiaries) generally have agreed not to acquire, own, operate or charter certain shuttle tankers operating under charters of five years or more. The Omnibus Agreement, however, contains significant exceptions that may allow KNOT or any of its controlled affiliates to compete with us, which could harm our business. Please read “Item"Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Omnibus Agreement—Noncompetition."

Unitholders have limited voting rights, and our partnership agreement restricts the voting rights of Norwegian Resident Holders and unitholders owning more than 4.9% of our common units.

Unlike the holders of common stock in a corporation, holders of common units have only limited voting rights on matters affecting our business. We hold a meeting of the limited partners every year to elect one or more members of our board of directors and to vote on any other matters that are properly brought before the meeting. Common unitholders are entitled to elect only four of the seven members of our board of directors. The elected directors are elected on a staggered basis and generally serve for four-year terms. Our general partner in its sole discretion appoints the remaining three directors and sets the terms for which those directors serve. Our partnership agreement also contains provisions limiting the ability of unitholders to call meetings or to acquire information about our operations, as well as other provisions limiting our unitholders’unitholders' ability to influence the manner or direction of management. Unitholders have no right to elect our general partner, and our general partner may not be removed except by a vote of the holders of at least 662/3% of the outstanding common and subordinated units, including any units owned by our general partner and its affiliates, voting together as a single class.

Our partnership agreement further restricts unitholders’unitholders' voting rights by providing that Norwegian Resident Holders are not eligible to vote in the election of elected directors. Further, if any person or group owns beneficially more than 4.9% of any class of units then outstanding, any such units owned by that person or group in excess of 4.9% may not be voted on any matter and are not considered to be outstanding when sending notices of a meeting of unitholders, calculating required votes (except for purposes of nominating a person for election to our board of directors), determining the presence of a


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quorum or for other similar purposes, unless required by law. The voting rights of any unitholders not entitled to vote on a specific matter are effectively redistributed pro rata among the other common unitholders. Our general partner, its affiliates and persons who acquire common units with the prior approval of our board of directors are not subject to the 4.9% limitation except with respect to voting their common units in the election of the elected directors.

KNOT and its affiliates own a 33.2%substantial interest in us and have conflicts of interest and limited fiduciary and contractual duties to us and our common unitholders, which may permit them to favor their own interests to the detriment of our unitholders.

As of March 18, 2016,April 10, 2019, KNOT owned a 30.9% limited partner interest in us26.2% of our common units and owned and controlled our general partner, which owns a 2.01%1.85% general partner interest in us and a 0.3% limited partner interest in us.of our common units. Certain of our directors are directors of KNOT or its affiliates, and, as such, they have fiduciary duties to KNOT or its affiliates that may cause them to pursue business strategies that disproportionately benefit KNOT or its affiliates or which otherwise are not in the best interests of us or our unitholders. Conflicts of interest may arise between KNOT and its affiliates (including our general partner), on the one hand, and us and our unitholders, on the other hand. As a result of these conflicts, our general partner and its affiliates may favor their own interests over the interests of our unitholders. Please read “—"—Our partnership agreement limits our general partner’spartner's and our directors’directors' fiduciary duties to our unitholders and restricts the remedies available to unitholders for actions taken by our general partner or our directors." These conflicts include, among others, the following situations:

    neither our partnership agreement nor any other agreement requires our general partner or KNOT or its affiliates to pursue a business strategy that favors us or utilizes our assets, and KNOT’sKNOT's officers and directors have a fiduciary duty to make decisions in the best interests of the shareholders of KNOT, which may be contrary to our interests;



our partnership agreement permits our general partner to make a number of decisions in its individual capacity, as opposed to in its capacity as our general partner. Specifically, our general partner is considered to be acting in its individual capacity if it exercises its call right, pre-emptive rights or registration rights, consents or withholds consent to any merger or consolidation of the Partnership, appoints any directors or votes for the election of any director, votes or refrains from voting on amendments to our partnership agreement that require a vote of the outstanding units, voluntarily withdraws from the Partnership, transfers (to the extent permitted under our partnership agreement) or refrains from transferring its units or general partner interest or votes upon the dissolution of the Partnership;



our general partner and our directors have limited their liabilities and reduced their fiduciary duties under the laws of the Marshall Islands, while also restricting the remedies available to our unitholders, and, as a result of purchasing common units, unitholders are treated as having agreed to the modified standard of fiduciary duties and to certain actions that may be taken by our general partner and our directors, all as set forth in our partnership agreement;



our general partner is entitled to reimbursement of all reasonable costs incurred by it and its affiliates for our benefit;



our partnership agreement does not restrict us from paying our general partner or its affiliates for any services rendered to us on terms that are fair and reasonable or entering into additional contractual arrangements with any of these entities on our behalf;



our general partner may exercise its right to call and purchase our common units if it and its affiliates own more than 80.0% of our common units; and



our general partner is not obligated to obtain a fairness opinion regarding the value of the common units to be repurchased by it upon the exercise of its limited call right.

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Although a majority of our directors have been elected by common unitholders, our general partner has substantial influence on decisions made by our board of directors. Please read “Item"Item 7. Major Unitholders and Related Party Transactions."

Our partnership agreement limits our general partner’spartner's and our directors’directors' fiduciary duties to our unitholders and restricts the remedies available to unitholders for actions taken by our general partner or our directors.

Our partnership agreement provides that our general partner irrevocably delegates to our board of directors the authority to oversee and direct our operations, management and policies on an exclusive basis, and such delegation is binding on any successor general partner of the Partnership. Our partnership agreement also contains provisions that reduce the standards to which our general partner and directors would otherwise be held by Marshall Islands law. For example, our partnership agreement:

    permits our general partner to make a number of decisions in its individual capacity, as opposed to in its capacity as our general partner. Where our partnership agreement permits, our general partner may consider only the interests and factors that it desires, and in such cases it has no fiduciary duty or obligation to give any consideration to any interest of, or factors affecting us, our affiliates or our unitholders. Decisions made by our general partner in its individual capacity are made by its board of directors, which is appointed by KNOT. Specifically, pursuant to our partnership agreement, our general partner is considered to be acting in its individual capacity if it exercises its call right, pre-emptive rights or registration rights, consents or withholds consent to any merger or consolidation of the Partnership, appoints any directors or votes for the election of any director, votes or refrains from voting on amendments to our partnership agreement that require a vote of the outstanding units, voluntarily withdraws from the Partnership, transfers (to the extent permitted under our partnership agreement) or refrains from transferring its units or general partner interest or votes upon the dissolution of the Partnership;



provides that our general partner and our directors are entitled to make other decisions in “good faith”"good faith" if they reasonably believe that the decision is in our best interests;



generally provides that affiliated transactions and resolutions of conflicts of interest not approved by the conflicts committee of our board of directors and not involving a vote of unitholders must be on terms no less favorable to us than those generally being provided to or available from unrelated third parties or be “fair"fair and reasonable”reasonable" to us and that, in determining whether a transaction or resolution is “fair"fair and reasonable," our board of directors may consider the totality of the relationships between the parties involved, including other transactions that may be particularly advantageous or beneficial to us; and



provides that neither our general partner nor our officers or our directors is liable for monetary damages to us, our limited partners or assignees for any acts or omissions unless there has been a final and non-appealable judgment entered by a court of competent jurisdiction determining that our general partner or our officers or directors or those other persons engaged in actual fraud or willful misconduct.

In order to become a limited partner of our partnership, a common unitholder is required to agree to be bound by the provisions in our partnership agreement, including the provisions discussed above.

Our partnership agreement provides that our general partner delegates all its management activities in relation to us to our board of directors, and arrangements are in place such that any activities that would otherwise constitute regulated activities under the Financial Services and Markets Act 2000 (Regulated Activities Order) 2001 were they to be performed in the United Kingdom (and that would not fall within a suitable exemption) are performed outside of the United Kingdom.


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However, there can be no assurance that this will not change (deliberately or otherwise) over time, and there is no current intention for our general partner, us or any of our subsidiaries to seek authorization from the Financial Conduct Authority in the United Kingdom, which would be required for any person to lawfully carry out such regulated activities in the United Kingdom.

Fees and cost reimbursements, which affiliates of KNOT determine for services provided to us and our subsidiaries, are substantial, payable regardless of our profitability and reduce our cash available for distribution to our unitholders.

Pursuant to technical management agreements, our subsidiaries that own vessels operating under time charters pay fees for services provided to them by KNOT Management and reimburse KNOT Management for all expenses incurred on their behalf. These fees and expenses include all costs and expenses incurred in providing the crew, technical and commercial management of the vessels in our fleet to our subsidiaries. Additionally our subsidiaries that own vessels operating under bareboat charters have entered into management and administration agreements with either KNOT Management or KNOT Management Denmark AS (“KNOT Management Denmark”), a 100% owned subsidiary of KNOT, pursuant to which these companies provide general monitoring services for the vessels in exchange for an annual fee.

In addition, pursuant to an administrative services agreement, KNOT UK provides us with certain administrative services. KNOT UK is permitted to subcontract certain of the administrative services provided to us under this agreement to KOAS UK, KOAS and KNOT Management. We reimburse KNOT UK, and KNOT UK reimburses KOAS UK, KOAS and KNOT Management, as applicable, for their reasonable costs and expenses incurred in connection with the provision of the services subcontracted to KOAS UK, KOAS and KNOT Management under the administrative services agreement. In addition, KNOT UK pays to KOAS UK, KOAS and KNOT Management, as applicable, a service fee in U.S. Dollars equal to 5% of the costs and expenses incurred in connection with providing services.

For a description of the technical management agreements, management and administration agreements and the administrative services agreement, please read “Item"Item 7. Major Unitholders and Related Party Transactions." The fees and expenses payable pursuant to the technical management agreements, management and administration agreements and the administrative services agreement are payable without regard to our business, results of operation and financial condition. The payment of fees to and the reimbursement of expenses of affiliates of KNOT could adversely affect our ability to pay cash distributions to our unitholders.

Our partnership agreement contains provisions that may have the effect of discouraging a person or group from attempting to remove our current management or our general partner, and even if public unitholders are dissatisfied, they are unable to remove our general partner without KNOT’sKNOT's consent, unless KNOT’sKNOT's ownership interest in us is decreased, all of which could diminish the trading price of our common units.

Our partnership agreement contains provisions that may have the effect of discouraging a person or group from attempting to remove our current management or our general partner.

Our unitholders are unable to remove our general partner without its consent, because our general partner and its affiliates own sufficient units to be able to prevent its removal. The vote of the holders of at least 66 2/3% of all outstanding common and subordinated units voting together as a single class is required to remove the general partner. As of March 18, 2016, our general partner and its affiliates owned 0.5% of the outstanding common units and all of the subordinated units.

    If our general partner is removed without “cause” during the subordination period"cause" and units held by our general partner and KNOT are not voted in favor of that removal, all remaining subordinated units automatically convert into common units, any existing arrearages on the common units are extinguished, and our general partner has the right to convert its general partner interest, and the holders of the incentive distribution rights have the right to convert such incentive distribution rights, into common units or to receive cash in exchange for those interests based on the fair market value of those interests at the time. A removal of our general partner under these circumstances would adversely affect the common units by prematurely eliminating their distribution and liquidation preference over the subordinated units, which would otherwise have continued until we had met certain distribution and performance tests. Any conversion of the general partner interest or incentive distribution rights would be dilutive to existing unitholders. Furthermore, any cash payment in lieu of such conversion could be prohibitively expensive. “Cause”"Cause" is narrowly defined to mean that a court of competent jurisdiction has entered a final, non-appealable judgment finding our general partner liable for actual fraud or

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      willful or wanton misconduct in its capacity as our general partner. Cause does not include most cases of charges of poor business decisions, such as charges of poor management of our business by the directors appointed by our general partner, so the removal of our general partner because of our unitholders’ dissatisfaction with the general partner’s decisions in this regard would most likely result in the termination of the subordination period.

partner.

Common unitholders are entitled to elect only four of the seven members of our board of directors. Our general partner in its sole discretion appoints the remaining three directors.



Election of the four directors elected by common unitholders is staggered, meaning that the members of only one of four classes of our elected directors are selected each year. In addition, the directors appointed by our general partner serve for terms determined by our general partner.



Our partnership agreement contains provisions limiting the ability of unitholders to call meetings of unitholders, to nominate directors and to acquire information about our operations as well as other provisions limiting our unitholders’unitholders' ability to influence the manner or direction of management.

Unitholders’

Unitholders' voting rights are further restricted by our partnership agreement provision providing that if any person or group owns beneficially more than 4.9% of any class of units then outstanding, any such units owned by that person or group in excess of 4.9% may not be voted on any matter and are not considered to be outstanding when sending notices of a meeting of unitholders, calculating required votes (except for purposes of nominating a person for election to our board of directors), determining the presence of a quorum or for other similar purposes, unless required by law. The voting rights of any such unitholders in excess of 4.9% effectively are redistributed pro rata among the other common unitholders holding less than 4.9% of the voting power of all classes of units entitled to vote. Our general partner, its affiliates and persons who acquire common units with the prior approval of our board of directors are not subject to this 4.9% limitation except with respect to voting their common units in the election of the elected directors.



There are no restrictions in our partnership agreement on our ability to issue equity securities.

The effect of these provisions may be to diminish the price at which the common units trade.

The control of our general partner may be transferred to a third party without unitholder consent.

Our general partner may transfer its general partner interest to a third party in a merger or in a sale of all or substantially all of its assets without the consent of our unitholders. In addition, our partnership agreement does not restrict the ability of the members of our general partner from transferring their respective membership interests in our general partner to a third party.

Substantial future sales of our common units or the issuance of additional preferred units in the public market could cause the price of our common units to fall.

        The market price of our common units could decline due to sales of a large number of units, or the issuance of debt securities or warrants, in the market, or the perception that these sales could occur. These sales could also make it more difficult for us to sell equity securities in the future at a time and price that we deem appropriate to raise funds through future offerings of common units.

We have granted registration rights to KNOT and certain of its affiliates. These unitholders have the right, subject to some conditions, to require us to file registration statements covering any of our common subordinated or other equity securities owned by them or to include those securities in registration statements that we may file for ourselves or other unitholders. As of March 18, 2016,April 10, 2019, KNOT and its affiliatesour general partner owned 0.5%26.5% of the common units, all of the subordinated units and all of the incentive distribution rights. We have also entered into a registration rights agreement with the holders of the Series A Preferred Units,


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pursuant to which we filed a registration statement to register resales of the common units underlying the Series A Preferred Units. Following their registration and sale, under an applicable registration statement, thosethese securities will become freely tradable. By exercising their registration rights and selling a large number of common units or other securities, these unitholdersour securityholders with registration rights could cause the price of our common units to decline.

Our common units are subordinated to our existing and future indebtedness and our Series A Preferred Units.

        Our common units are equity interests in us and do not constitute indebtedness. The common units rank junior to all indebtedness and other non-equity claims on us with respect to the assets available to satisfy claims, including a liquidation of the Partnership. Additionally, holders of the common units are subject to the prior distribution and liquidation rights of the holders of the Series A Preferred Units and any other preferred units we may issue in the future.

        As long as our outstanding Series A Preferred Units remain outstanding, distribution payments relating to our common units are prohibited under our partnership agreement until all accrued and unpaid distributions are paid on the Series A Preferred Units.

KNOT, as the holder of all of the incentive distribution rights, may elect to cause us to issue additional common units to it in connection with a resetting of the target distribution levels related to its incentive distribution rights without the approval of the conflicts committee of our board of directors or holders of our common units and subordinated units. This may result in lower distributions to holders of our common units in certain situations.

KNOT, as the holder of all of the incentive distribution rights, has the right, at a time when there are no subordinated units outstanding and it has received incentive distributions at the highest level to which it is entitled (48.0%) for each of the prior four consecutive fiscal quarters, to reset the initial cash target distribution levels at higher levels based on the distribution at the time of the exercise of the reset election. Following a reset election by KNOT, the minimum quarterly distribution will be reset to an amount equal to the average cash distribution per common unit for the two fiscal quarters immediately preceding the reset election (such amount is referred to as the “reset"reset minimum quarterly distribution”distribution"), and the target distribution levels will be reset to correspondingly higher levels based on the same percentage increases above the reset minimum quarterly distribution.

In connection with resetting these target distribution levels, KNOT will be entitled to receive a number of common units equal to that number of common units whose aggregate quarterly cash distributions equaled the average of the distributions to it on the incentive distribution rights in the prior two quarters. We anticipate that KNOT would exercise this reset right in order to facilitate acquisitions or internal growth projects that would not be sufficiently accretive to cash distributions per common unit without such conversion; however, it is possible that KNOT could exercise this reset election at a time when it is experiencing, or may be expected to experience, declines in the cash distributions it receives related to its incentive distribution rights and may therefore desire to be issued our common units, rather than retain the right to receive incentive distributions based on the initial target distribution levels. As a result, a reset election may cause our common unitholders to experience dilution in the amount of cash distributions that they would have otherwise received had we not issued additional common units to KNOT in connection with resetting the target distribution levels related to KNOT’sKNOT's incentive distribution rights. Please read “Item"Item 8. Financial Information—Consolidated Statements and Other Financial Information—Our Cash Distribution Policy—Incentive Distribution Rights."


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We may issue additional equity securities, including a limited amount of securities senior to the common units, without the approval of our unitholders, which would dilute their ownership interests.

We may, without the approval of our unitholders, issue an unlimited number of additional units or other equity securities.common units. In addition, we may issue an unlimited number of units that are senior to the common units in right of distribution, liquidation and voting.voting, provided that the aggregate amount of our Series A Preferred Units and any other securities on parity with the Series A Preferred Units, pro forma for such issuance, does not exceed 33.33% of the book value of the sum of our then outstanding aggregate amount of parity securities and junior securities (including the common units). The consent of the holders of the Series A Preferred Units will be necessary for us to issue any parity securities (or securities senior to our Series A Preferred Units) in excess of such pro forma book value.

        The issuance by us of additional common units or other equity securities of equal or senior rank will have the following effects:

    our unitholders’unitholders' proportionate ownership interest in us will decrease;



the amount of cash available for distribution on each unit may decrease;

because a lower percentage of total outstanding units will be subordinated units, the risk that a shortfall in the payment of the minimum quarterly distribution will be borne by our common unitholders will increase;



the relative voting strength of each previously outstanding unit may be diminished; and



the market price of the common units may decline.

UponA substantial number of our common units may be issued upon conversion of our Series A Preferred Units or as redemption payments in respect of our Series A Preferred Units, which issuances could reduce the expirationvalue of our common units.

        Our Series A Preferred Units will be convertible, under certain circumstances, at the then applicable conversion rate, which will be subject to adjustment under certain circumstances. The conversion rate will be redetermined on a quarterly basis, such that the conversion rate will be equal to $24.00 (the "Issue Price") divided by the product of (x) the book value per common unit at the end of the subordination period,immediately preceding quarter (pro-forma for per unit cash distributions payable with respect to such quarter) multiplied by (y) the subordinated units will convertquotient of (i) the Issue Price divided by (ii) the book value per common unit on the initial issuance date of the Series A Preferred Units.

        The Series A Preferred Units are generally convertible, at the option of the holders of the Series A Preferred Units, into common units at the then applicable conversion rate. In addition, we may redeem the Series A Preferred Units at any time before February 2, 2027 at the redemption price applicable on any such redemption date, provided, however, that upon notice from us to the holders of Series A Preferred Units or our intention to redeem, such holders may elect, instead, to convert their Series A Preferred Units into common units at the then applicable conversion rate. In addition, subject to certain conditions, we may convert the Series A Preferred Units into common units at the then applicable conversion rate. Upon a change of control of the Partnership, the holders of Series A Preferred Units may require us to redeem the Series A Preferred Units, in cash, at 100% of the Issue Price. Further, the holders of Series A Preferred Units may cause us to redeem the Series A Preferred Units on February 2, 2027 in, at our option, (i) cash at a price equal to 70% of the Issue Price or (ii) common units such that each Series A Preferred Unit receives common units worth 80% of the Issue Price. The value (and, therefore, the number) of the common units to be delivered pursuant thereto will be determined based on the volume-weighted average trading price, as adjusted for splits, combinations and will then participate pro rata with other similar transactions, of our common units as reported on the NYSE for the 30-trading day period ending on the fifth trading day immediately prior to the redemption date.

        If a substantial portion of the Series A Preferred Units are converted into common units or redeemed under certain circumstances, common unitholders could experience significant dilution. Furthermore, if holders of such Series A Preferred Units were to dispose of a substantial portion of


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these common units in distributionsthe public market following such a conversion, whether in a single transaction or series of available cash.

Duringtransactions, it could adversely affect the subordination period,market price for our common units. These sales, or the possibility that these sales may occur, could make it more difficult for us to sell our common units in the future.

        The number of our common units issuable upon conversion or redemption under certain circumstances of the Series A Preferred Units will be impacted by, among other things, the level of our quarterly cash distributions, as the conversion rate is redetermined each quarter, based on the pro forma per unit cash distributions we make on our common units (as described above) and the market price of our common units. Accordingly, the number of common units issuable upon conversion or redemption under certain circumstances could be substantial, especially during periods of significant declines in market prices of our common units or if we experience certain events, such as, among other things, a decline in the value of our vessels that results in an impairment or write-down of the value of our vessels or a write-off of any goodwill, decline in the fair value of our derivative instruments, change in accounting principle that results in a decline in our book value, or other event that results in a decline in our book value.

        The issuance of common units upon conversion or redemption under certain circumstances of our Series A Preferred Units may have the rightfollowing effects:

    an existing unitholder's proportionate ownership interest in us will decrease;

    the amount of cash available for distribution on each common unit may decrease;

    the relative voting strength of each previously outstanding common unit may be diminished; and

    the market price of our common units may decline.

        The market price of our common units is likely to receive distributionsbe influenced by the Series A Preferred Units. For example, the market price of available cash from operating surplusour common units could become more volatile and could be depressed by:

    investors' anticipation of the potential resale in an amount equalthe market of a substantial number of additional common units received upon conversion of the Series A Preferred Units;

    possible sales of our common units by investors who view the Series A Preferred Units as a more attractive means of equity participation in us than owning our common units; and

    hedging or arbitrage trading activity that may develop involving the Series A Preferred Units and our common units.

Our Series A Preferred Units have rights, preferences and privileges that are not held by, and are preferential to the minimum quarterlyrights of, holders of our common units.

        Our Series A Preferred Units rank senior to all our common units with respect to distribution of $0.375 per unit, plus any arrearagesrights and liquidation preference. These preferences could adversely affect the market price for our common units or could make it more difficult for us to sell our common units in the payment offuture.

        In addition, distributions on the minimum quarterly distributionSeries A Preferred Units accrue and are cumulative. Our obligation to pay distributions on our Series A Preferred Units, or on the common units from prior quarters, before any distributionsissued following conversion of such Series A Preferred Units, could impact our liquidity and reduce the amount of cash flow available cash from operating surplus may be madefor working capital, capital expenditures, growth opportunities, acquisitions, and other general partnership purposes. Our obligations to the holders of Series A Preferred Units could also limit our ability to obtain additional financing or increase our borrowing costs, which could have an adverse effect on the subordinated units. Distribution arrearages do not accrue on the subordinated units. The purposeour financial condition.


Table of the subordinated units is to increase the likelihood that during the subordination period there will be available cash from operating surplus

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to be distributed on the common units. Upon the expiration of the subordination period, the subordinated units will convert into common units and will then participate pro rata with other common units in distributions of available cash. We currently expect that the subordination period will end in the second quarter of 2016. Please read “Item 8. Financial Information—Consolidated Statements and Other Financial Information— Our Cash Distribution Policy—Subordination Period.”

In establishing cash reserves, our board of directors may reduce the amount of cash available for distribution to our unitholders.

Our partnership agreement requires our board of directors to deduct from operating surplus cash reserves that it determines are necessary to fund our future operating expenditures. These reserves also affect the amount of cash available for distribution to our unitholders. Our board of directors may establish reserves for distributions on the subordinated units, but only if those reserves will not prevent us from distributing the full minimum quarterly distribution, plus any arrearages, on the common units for the following four quarters. As described above in “—"—Risks Inherent in Our Business—We must make substantial capital expenditures to maintain the operating capacity of our fleet, which reduces cash available for distribution. In addition, each quarter we are required to deduct estimated maintenance and replacement capital expenditures from operating surplus, which may result in less cash available to unitholders than if actual maintenance and replacement capital expenditures were deducted," our partnership agreement requires our board of directors each quarter to deduct from operating surplus estimated maintenance and replacement capital expenditures, as opposed to actual maintenance and replacement capital expenditures, which could reduce the amount of available cash for distribution. The amount of estimated maintenance and replacement capital expenditures deducted from operating surplus is subject to review and change by our board of directors at least once a year, provided that any change must be approved by the conflicts committee of our board of directors.

Our general partner has a limited call right that may require our unitholders to sell their common units at an undesirable time or price.

If at any time our general partner and its affiliates own more than 80.0% of the common units, our general partner has the right, which it may assign to any of its affiliates or to us, but not the obligation, to acquire all, but not less than all, of the common units held by unaffiliated persons at a price not less than the then-current market price of our common units. Our general partner is not obligated to obtain a fairness opinion regarding the value of the common units to be repurchased by it upon the exercise of this limited call right. As a result, our unitholders may be required to sell their common units at an undesirable time or price and may not receive any return on their investment. Our unitholders may also incur a tax liability upon a sale of their units.

As of March 18, 2016,April 10, 2019, KNOT and its affiliatesour general partner owned 0.5% of our common units. At the end of the subordination period, assuming no additional issuances of common units and no additional repurchases of common units pursuant to the repurchase program, KNOT and its affiliates will own 31.8%26.5% of our common units.

Our unitholders may not have limited liability if a court finds that unitholder action constitutes control of our business.

As a limited partner in a partnership organized under the laws of the Marshall Islands, our unitholders could be held liable for our obligations to the same extent as a general partner if our unitholders participate in the “control”"control" of our business. Our general partner generally has unlimited liability for the obligations of the Partnership, such as its debts and environmental liabilities, except for those contractual obligations of the Partnership that are expressly made without recourse to our general partner. In addition, the limitations on the liability of holders of limited partner interests for the obligations of a limited partnership have not been clearly established in some jurisdictions in which we do business.

We can borrow money to pay distributions, which would reduce the amount of credit available to operate our business.

Our partnership agreement allows us to make working capital borrowings to pay distributions. Accordingly, if we have available borrowing capacity, we can make distributions on all our units even though cash generated by our operations may not be sufficient to pay such distributions. Any working capital borrowings by us to make distributions reduces the amount of working capital borrowings we can make for operating our business. For more information, please read “Item"Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources."


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Increases in interest rates may cause the market price of our common units to decline.

An increase in interest rates may cause a corresponding decline in demand for equity investments in general, and in particular for yield-based equity investments such as our common units. Any such increase in interest rates or reduction in demand for our common units resulting from other relatively more attractive investment opportunities may cause the trading price of our common units to decline.

We are exposed to market risks relating to the announced phase-out of the London Interbank Offered Rate ("LIBOR")

        We are exposed to a market risk relating to increases in interest rates because the amounts borrowed under our existing loan and credit facilities bear interest at rates based on LIBOR. On July 27, 2017, the United Kingdom Financial Conduct Authority ("FCA"), which regulates LIBOR, announced that it intends to stop persuading or compelling banks to submit rates for the calculation of LIBOR to the administrator of LIBOR after 2021 ("FCA Announcement"). The FCA Announcement indicates that the continuation of LIBOR on the current basis is not guaranteed after 2021. Significant increases in LIBOR or uncertainty surrounding its phase out after 2021 could adversely affect our business, financial condition, operating results and cash flows. We use interest rate swaps to reduce our exposure to interest rate risk and hedge a portion of our outstanding indebtedness. There is no assurance that our derivative contracts will provide adequate protection against adverse changes in interest rates or that our bank counterparties will be able to perform their obligations.

Unitholders may have liability to repay distributions.

Under some circumstances, unitholders may have to repay amounts wrongfully returned or distributed to them. Under the Marshall Islands Limited Partnership Act (the “Marshall"Marshall Islands Act”Act"), we may not make a distribution to our unitholders if the distribution would cause our liabilities, other than liabilities to partners on account of their partnership interest and liabilities for which the recourse of creditors is limited to specified property of ours, to exceed the fair value of our assets, except that the fair value of property that is subject to a liability for which the recourse of creditors is limited will be included in our assets only to the extent that the fair value of that property exceeds that liability. Marshall Islands law provides that for a period of three years from the date of the impermissible distribution, limited partners who received the distribution and who knew at the time of the distribution that it violated Marshall Islands law will be liable to the limited partnership for the distribution amount. Assignees who become substituted limited partners are liable for the obligations of the assignor to make contributions to the limited partnership that are known to the assignee at the time it became a limited partner and for unknown obligations if the liabilities could be determined from our partnership agreement.

We are an “emerging growth company,” and we cannot be certain if the reduced disclosure requirements applicable to emerging growth companies make our common units less attractive to investors.

We are an “emerging growth company,” as defined in the JOBS Act, and we may take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not “emerging growth companies.” These provisions include an exemption from the auditor attestation requirement in the assessment of the emerging growth company’s internal control over financial reporting and an exemption from compliance with any new requirements adopted by the Public Company Accounting Oversight Board requiring mandatory audit firm rotation or a supplement to our auditor’s report in which the auditor would be required to provide additional information about the audit and our financial statements. We cannot predict if investors find our common units less attractive, because we are relying on these exemptions. If some investors find our common units less attractive as a result, there may be a less active trading market for our common units, and our unit price may be more volatile.

In addition, under the JOBS Act, our independent registered public accounting firm is not required to attest to the effectiveness of our internal control over financial reporting pursuant to Section 404 of the Sarbanes-Oxley Act of 2002 for so long as we are an emerging growth company. For as long as we take advantage of the reduced reporting obligations, the information that we provide unitholders may be different than information provided by other public companies.

We have been organized as a limited partnership under the laws of the Marshall Islands, which does not have a well-developed body of partnership law.

Our partnership affairs are governed by our partnership agreement and by the Marshall Islands Act. The provisions of the Marshall Islands Act resemble provisions of the limited partnership laws of a number of states in the United States, most notably Delaware. The Marshall Islands Act also provides that it is to be applied and construed to make it, with respect to the subject matter thereof, uniform with the laws of the State of Delaware and, for non-resident limited partnerships such as ours, so long as it does not conflict with the Marshall Islands Act or decisions of the High and Supreme Courts of the Marshall Islands, the non-statutory law (or case law) of the State of Delaware is adopted as the law of the Marshall Islands. There have been, however, few, if any, court cases in the Marshall Islands interpreting the Marshall Islands Act, in contrast to Delaware, which has a fairly well-developed body of case law interpreting its limited partnership statute. Accordingly, we cannot predict whether Marshall Islands courts would reach the same conclusions as the courts in Delaware. For example, the rights of


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our unitholders and the fiduciary responsibilities of our general partner under Marshall Islands law are not as clearly established as under judicial precedent in existence in Delaware. As a result, unitholders may have more difficulty in protecting their interests in the face of actions by our general partner and its officers and directors than would unitholders of a similarly organized limited partnership in the United States.

Because we and KNOT UK are Marshall Islands entities, our operations may be subject to economic substance requirements of the European Union, which could harm our business.

        On December 5, 2017, following an assessment of the tax policies of various countries by the Code of Conduct Group for Business Taxation of the European Union (the "COCG"), the Council of the European Union (the "Council") approved and published Council conclusions containing a list of "non-cooperative jurisdictions" for tax purposes (the "2017 Conclusions"). On March 12, 2019, the Council adopted a revised list of non-cooperative jurisdictions (the "2019 Conclusions"). In the 2019 Conclusions, the Republic of the Marshall Islands, among others, was placed by the E.U. on its list of non-cooperative jurisdictions for tax purposes for failing to implement certain commitments previously made to the E.U. by the agreed deadline. E.U. member states have agreed upon a set of measures, which they can choose to apply against the listed countries, including increased monitoring and audits, withholding taxes, special documentation requirements and anti-abuse provisions. The European Commission has stated it will continue to support member states' efforts to develop a more coordinated approach to sanctions for the listed countries in 2019. E.U. legislation prohibits E.U. funds from being channeled or transited through entities in non-cooperative jurisdictions.

        We are a Marshall Islands partnership and KNOT UK is a Marshall Islands limited liability company. At present, the impact of being included on the list of non-cooperative jurisdictions for tax purposes is unclear. Certain jurisdictions have enacted or may enact economic substance laws and regulations in response to the listing and the Marshall Islands may enact similar laws and regulations with which we may be obligated to comply. If we fail to comply with our obligations under any such laws and regulations, we could be subject to financial penalties and spontaneous disclosure of information to foreign tax officials, or could be struck from the register of companies.

        We do not know: if the E.U. will remove the Marshall Islands from the list of non-cooperative jurisdictions; what actions the Marshall Islands may take, if any, to remove itself from the list; how quickly the E.U. would react to any changes in legislation of the Marshall Islands; or how E.U. banks or other counterparties will react while we or KNOT UK remain as entities organized and existing under the laws of the Marshall Islands. The effect of the E.U. list of non-cooperative jurisdictions, and any noncompliance by us with any legislation adopted by the Marshall Islands to achieve removal from the list, could have a material adverse effect on our business, financial conditions and operating results.

Because we are organized under the laws of the Marshall Islands, it may be difficult to serve us with legal process or enforce judgments against us, our directors or our management.

We are organized under the laws of the Marshall Islands, and substantially all of our assets are located outside of the United States. In addition, our general partner is a Marshall Islands limited liability company, and our directors and officers generally are or will be non-residents of the United States, and all or a substantial portion of the assets of these non-residents are located outside the United States. As a result, it may be difficult or impossible for our unitholders to bring an action against us or against these individuals in the United States if our unitholders believe that their rights have been infringed under securities laws or otherwise. Even if our unitholders are successful in bringing an action of this kind, the laws of the Marshall Islands and of other jurisdictions may prevent or restrict our unitholders from enforcing a judgment against our assets or the assets of our general partner or our directors or officers.


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Tax Risks

In addition to the following risk factors, you should read “Item"Item 4. Information on the Partnership—Business Overview—Taxation of the Partnership”Partnership" and “Item"Item 10. Additional Information—Taxation”Taxation" for a more complete discussion of the expected material U.S. federal and non-U.S. income tax considerations relating to us and the ownership and disposition of our common units.

We are subject to taxes, which reduces our cash available for distribution to our unitholders.

We and our subsidiaries may be subject to tax in the jurisdictions in which we are organized or operate, reducing the amount of cash available for distribution. In computing our tax obligations in these jurisdictions, we are required to take various tax accounting and reporting positions on matters that are not entirely free from doubt and for which we have not received rulings from the governing authorities. We cannot assure you that, upon review of these positions, the applicable authorities will agree with our positions. A successful challenge by a tax authority could result in additional tax imposed on us or our subsidiaries, further reducing the cash available for distribution. In addition, changes in our operations or ownership could result in additional tax being imposed on us or our subsidiaries in jurisdictions in which operations are conducted.

A change in tax laws in any country in which we operate could adversely affect us.

Tax laws and regulations are highly complex and subject to interpretation. Consequently, we and our subsidiaries are subject to changing tax laws, treaties and regulations in and between countries in which we operate. Our income tax expense is based on our interpretation of the tax laws in effect at the time the expense was incurred. A change in tax laws, treaties or regulations, or in the interpretation thereof, could result in a materially higher tax expense or a higher effective tax rate on our earnings. Such changes may include measures enacted in response to the ongoing initiatives in relation to fiscal legislation at an international level, such as the Action Plan on Base Erosion and Profit Shifting of the Organization for Economic Co-operation and Development.

U.S. tax authorities could treat us as a “passive"passive foreign investment company," which would have adverse U.S. federal income tax consequences to U.S. unitholders.

A non-U.S. entity treated as a corporation for U.S. federal income tax purposes will be treated as a “passive"passive foreign investment company”company" (a “PFIC”"PFIC") for U.S. federal income tax purposes if at least 75% of its gross income for any taxable year consists of “passive income”"passive income" or at least 50% of the average value of its assets produce, or are held for the production of, “passive"passive income." For purposes of these tests, “passive income”"passive income" includes dividends, interest, gains from the sale or exchange of investment property, and rents and royalties other than rents and royalties that are received from unrelated parties in connection with the active conduct of a trade or business. For purposes of these tests, income derived from the performance of services does not constitute “passive"passive income." U.S. unitholders of a PFIC are subject to a disadvantageous U.S. federal income tax regime with respect to the income derived by the PFIC, the distributions they receive from the PFIC, and the gain, if any, they derive from the sale or other disposition of their interests in the PFIC.

Based on our current and projected method of operation, we believe that we were not a PFIC for any prior taxable year, and we expect that we will not be treated as a PFIC for the current or any future taxable year. We believe that more than 25% of our gross income for each taxable year was or will be non-passive income, and more than 50% of the average value of our assets for each such year was or will be held for the production of non-passive income. This belief is based on certain valuations and projections regarding our income and assets, and its validity is based on the accuracy of such valuations and projections. While we believe these valuations and projections to be accurate, the


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shipping market is volatile, and no assurance can be given that they will continue to be accurate at any time in the future.

Moreover, there are legal uncertainties involved in determining whether the income derived from time-chartering activities constitutes rental income or income derived from the performance of services. InTidewater Inc. v. United States, 565 F.3d 299 (5th Cir. 2009), the United States Court of Appeals for the Fifth Circuit (the “Fifth Circuit”"Fifth Circuit") held that income derived from certain time-chartering activities should be treated as rental income rather than services income for purposes of a provision of the Internal Revenue Code of 1986, as amended (the “Code”"Code"), relating to foreign sales corporations. In that case, the Fifth Circuit did not address the definition of passive income or the PFIC rules; however, the reasoning of the case could have implications as to how the income from a time charter would be classified under such rules. If the reasoning of this case were extended to the PFIC context, the gross income we derive or are deemed to derive from our time-chartering activities may be treated as rental income, and we would likely be treated as a PFIC. In published guidance, the Internal Revenue Service (the “IRS”"IRS") stated that it disagreed with the holding inTidewater and specified that time charters similar to those at issue in the case should be treated as service contracts. We have not sought, and we do not expect to seek, an IRS ruling on the treatment of income generated from our time-chartering activities. As a result, the IRS or a court could disagree with our position. No assurance can be given that this result will not occur. In addition, although we intend to conduct our affairs in a manner to avoid, to the extent possible, being classified as a PFIC with respect to any taxable year, we cannot assure you that the nature of our operations will not change in the future, or that we will not be a PFIC in the future. If the IRS were to

find that we are or have been a PFIC for any taxable year (and regardless of whether we remain a PFIC for any subsequent taxable year), our U.S. unitholders would face adverse U.S. federal income tax consequences. Please read “Item"Item 10. Additional Information—Taxation—U.S. Federal Income Taxation of U.S. Holders—PFIC Status and Significant Tax Consequences”Consequences" for a more detailed discussion of the U.S. federal income tax consequences to U.S. unitholders if we are treated as a PFIC.

We may have to pay tax on U.S. source income, which would reduce our cash flow.

Under the Code, U.S. source gross transportation income generally is subject to a 4% U.S. federal income tax without allowance for deduction of expenses, unless an exemption from tax applies under a tax treaty or Section 883 of the Code and the Treasury Regulations promulgated thereunder. U.S. source gross transportation income consists of 50% of the gross shipping income that is attributable to transportation that begins or ends, but that does not both begin and end, in the United States.

We expect that our vessel-owning subsidiaries will qualify for an exemption from U.S. tax on any U.S. source gross transportation income under the Convention Between the United States of America and the Kingdom of Norway with Respect to Taxes on Income and Property (the “U.S.-Norway"U.S.-Norway Tax Treaty”Treaty"), and we intend to take this position for U.S. federal income tax purposes. However, if we acquire interests in vessel-owning subsidiaries in the future that are not Norwegian residents for purposes of the U.S.-Norway Tax Treaty, U.S. source gross transportation income earned by those subsidiaries would generally be subject to a 4% U.S. federal income tax unless the exemption under Section 883 of the Code applied. In general, the Section 883 exemption provides that if a non-U.S. corporation satisfies the requirements of Section 883 of the Code and the Treasury Regulations thereunder, it will not be subject to the 4% U.S. federal income tax referenced above on its U.S. source gross transportation income. The Section 883 exemption does not apply to income attributable to transportation that begins and ends in the United States.

The vessels in our fleet do not currently engage in transportation that begins and ends in the United States, and we do not expect that our subsidiaries will in the future earn income from such transportation. If, notwithstanding this expectation, our subsidiaries earn income in the future from transportation that begins and ends in the United States, that income would not be exempt from U.S.


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federal income tax under Section 883 of the Code and may not be exempt from U.S. federal income tax under the U.S.-Norway Tax Treaty or Section 883 of the Code and wouldtherefore may be subject to a 35% net income tax in the United States.States (currently at a 21% rate).

The imposition of U.S. federal income tax on our income could have a negative effect on our business and would result in decreased earnings available for distribution to our unitholders.

Our unitholders may be subject to income tax in one or more non-U.S. jurisdictions as a result of owning our common units if, under the laws of any such jurisdiction, we are considered to be carrying on business there. Such laws may require our unitholders to file a tax return with, and pay taxes to, those jurisdictions.

We conduct our affairs and cause each of our subsidiaries to operate its business in a manner that minimizes income taxes imposed upon us and our subsidiaries. Furthermore, we conduct our affairs and cause each of our subsidiaries to operate its business in a manner that minimizes the risk that unitholders may be treated as having a permanent establishment or taxable presence in a jurisdiction where we or our subsidiaries conduct activities simply by virtue of their ownership of our common units. However, because we are organized as a partnership, there is a risk in some jurisdictions, including Norway, that our activities or the activities of our subsidiaries may rise to the level of a taxable presence that is attributed to our unitholders for tax purposes. We have obtained confirmation from the United Kingdom HM Revenue & Customs that unitholders should not be treated as trading in the United Kingdom merely by virtue of their ownership of our common units. If our unitholders are attributed such a taxable presence in a jurisdiction, our unitholders may be required to file a tax return with, and to pay tax in, that jurisdiction based on our unitholders’unitholders' allocable share of our income. In addition, we may be required to obtain information from our unitholders in the event a tax authority (including in the United Kingdom) requires such information to submit a tax return. We may be required to reduce distributions to our unitholders on account of any tax withholding obligations imposed upon us by that jurisdiction in respect of such allocation to our unitholders. The United States may not allow a tax credit for any foreign income taxes that our unitholders directly or indirectly incur by virtue of an investment in us.

Item 4.Information on the Partnership

    A.History and Development of the Partnership

General

General

KNOT Offshore Partners LP is a publicly traded limited partnership formed on February 21, 2013 to own, operate and acquire shuttle tankers under long-term charters, which we define as charters of five years or more. On April 18, 2013, we completed our IPOinitial public offering ("IPO") of 8,567,500 common units. In connection with our IPO, through KNOT UK, a 100% owned limited liability company formed under the laws of the Marshall Islands, the Partnership acquired a 100% ownership interest in KNOT Shuttle Tankers AS, which as of

February 27, 2013 directly or indirectly owned (1) 100% of Knutsen Shuttle Tankers XII KS, the owner of theRecife Knutsenand theFortaleza Knutsen, (2) 100% of Knutsen Shuttle Tankers XII AS, the general partner of Knutsen Shuttle Tankers XII KS, and (3) theWindsor Knutsen and theBodil Knutsen and all of their related charters, inventory and long-term debt. In establishing the new KNOT Shuttle Tankers AS structure, KNOT formed three new Norwegian subsidiaries, which acquired 90% of Knutsen Shuttle Tankers XII KS, 100% of theWindsor Knutsen and 100% of theBodil Knutsen, respectively.

On August 1, 2013, the Partnershipwe acquired Knutsen Shuttle Tankers 13 AS, the company that owns and operates the shuttle tanker, theCarmen Knutsen, from KNOT.

On        In June 30,and July 2014, we sold an aggregate of 5,240,000 common units in an underwritten public offering and used a portion of the Partnership acquiredproceeds to fund the acquisition from KNOT of Knutsen Shuttle


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Tankers 14 AS and Knutsen Shuttle Tankers 15 AS, the companies that own theHilda Knutsen and theTorill Knutsen, respectively, from KNOT.which closed on June 30, 2014.

On December 15, 2014, the Partnershipwe acquired KNOT Shuttle Tankers 20 AS, the company that owns the shuttle tanker, theDan Cisne, from KNOT.

On June 15,2, 2015, we sold 5,000,000 common units in an underwritten public offering and used a portion of the Partnership acquirednet proceeds to fund the acquisition from KNOT of KNOT Shuttle Tankers 21 AS, the company that owns the shuttle tanker, theDan Sabia, from KNOT.which closed on June 15, 2015.

On October 15, 2015, the Partnershipwe acquired Knutsen NYK Shuttle Tankers 16 AS, the company that owns the shuttle tanker, theIngrid Knutsen, from KNOT.

        On December 1, 2016, we acquired Knutsen Shuttle Tankers 19 AS, the company that owns the shuttle tanker, theRaquel Knutsen, from KNOT.

        On January 10, 2017, we sold 2,500,000 common units in an underwritten public offering, raising approximately $54.9 million in net proceeds.

        On February 2, 2017, we issued and sold in a private placement 2,083,333 Series A Preferred Units at a price of $24.00 per unit, raising approximately $48.6 million in net proceeds.

        On March 1, 2017, we acquired KNOT Shuttle Tankers 24 AS, the company that owns the shuttle tanker, theTordis Knutsen, from KNOT.

        On June 1, 2017, we acquired KNOT Shuttle Tankers 25 AS, the company that owns the shuttle tanker, theVigdis Knutsen, from KNOT.

        On June 30, 2017, we issued and sold in a second private placement 1,666,667 additional Series A Preferred Units at a price of $24.00 per unit, raising approximately $38.9 million in net proceeds.

        On September 30, 2017, we acquired KNOT Shuttle Tankers 26 AS, the company that owns the shuttle tanker, theLena Knutsen, from KNOT.

        On November 9, 2017, we sold 3,000,000 common units in an underwritten public offering. In connection with the offering, our general partner contributed $1.2 million to us to maintain its 1.85% general partner interest. The total net proceeds from the offering and the general partner contribution were $66.0 million.

        On December 15, 2017, we acquired KNOT Shuttle Tankers 32 AS, the company that owns the shuttle tanker, theBrasil Knutsen, from KNOT.

        On March 1, 2018, we acquired KNOT Shuttle Tankers 30 AS, the company that owns the shuttle tanker, theAnna Knutsen, from KNOT.

For more information regarding recent acquisitions and other developments, please see “Item"Item 5. Operating and Financial Review and Prospects—Significant Developments in 2015—Acquisitions”2018"

As of March 18, 2016,April 10, 2019, we had a fleet of tensixteen shuttle tankers.

We were formed under the law of the Marshall Islands and maintain our principal place of business at 2 Queen’sQueen's Cross, Aberdeen, Aberdeenshire, AB15 4YB, United Kingdom. Our telephone number at that address is +44 (0) 1224 618420. Our agent for service of process in the United States is Watson Farley & Williams LLP, and its address is 250 West 55th Street, New York, New York 10019.

Capital Expenditures

We reserve cash from operations for future maintenance capital expenditures, working capital and other matters. Because of the substantial capital expenditures, we are required to make to maintain our


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fleet, our annual estimated maintenance and replacement capital expenditures are currently $30.3$55.5 million per year, which is comprised of $26.6$47.0 million for replacing our current vessels at the end of their useful lives and $3.7$8.5 million for drydocking maintenance and classification surveys.

Access to Information

        The SEC maintains a website on the Internet that contains reports, proxy, information statements and other information electronically filed via the SEC's Electronic Data Gathering, Analysis, and Retrieval system, which may be accessed at the SEC's website at www.sec.gov.

        We maintain a website at www.knotoffshorepartners.com. The information on our website is not part of this Annual Report.

    B.Business Overview

General

General

We were formed to own and operate shuttle tankers under long-term charters. Our primary business objective is to increase quarterly distributions per unit over time by growing our business through accretive acquisitions of shuttle tankers and by chartering our vessels pursuant to long-term charters with high quality customers that generate long-term stable cash flows. All of the vessels in our current fleet are chartered to Statoil,Equinor, Transpetro, Repsol, BG Group,Shell, ExxonMobil, Galp and ENI under long-term charters. Our charters have an average remaining term of 5.63.4 years as of DecemberMarch 31, 20152019 (including guaranteed option periods).

        Since our IPO, we have increased our quarterly distribution from $0.375 per unit to $0.52 per unit for the quarter ended December 31, 2015.2018.

We intend to leverage the relationships, expertise and reputation of KNOT, a leading independent owner and operator of shuttle tankers, to pursue potential growth opportunities and to attract and retain high-quality, creditworthy customers. As of March 18, 2016,April 10, 2018, KNOT and our general partner owned our general partner interest, all of our incentive distribution rights and a 31.2% limited partner interest in us.26.5% of our common units. KNOT intends to utilize us as its primary growth vehicle to pursue the acquisition of long-term, stable cash-flow-generating shuttle tankers.

Business Strategies

Our primary business objective is to increase quarterly distributions per unit over time by executing the following strategies:

    Pursue strategic and accretive acquisitions of shuttle tankers on long-term, fixed-rate charters. We seek to leverage our relationship with KNOT to make strategic and accretive acquisitions. During the term of the Omnibus Agreement, we have the opportunity to purchase from KNOT any newbuild under a long-term charter or existing shuttle tanker in the KNOT fleet that enters into a long-term charter.

    Expand global operations in high-growth regions.  We seek to expand in proven areas of offshore production, such as the North Sea and Brazil, and in new production areas as they are developed. We believe that KNOT's leading market position, operational expertise and strong customer relationships will enable us to have early access to new production projects worldwide.

    Manage our fleet and deepen our customer relationships to continue to provide a stable base of cash flows. We intend to maintain and grow our cash flows by focusing on strong customer relationships and actively seeking the extension and renewal of existing charters in addition to new opportunities to serve our customers. KNOT charters its current fleet to a number of the world's leading energy companies. We believe the close relationships that KNOT has with these

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      companies will provide attractive opportunities for us. We continue to incorporate safety, health, security and environmental stewardship into all aspects of vessel design and operation in order to satisfy our customers and comply with national and international rules and regulations.

        

Pursue strategic and accretive acquisitions of shuttle tankers on long-term, fixed-rate charters. We seek to leverage our relationship with KNOT to make strategic and accretive acquisitions. Under the Omnibus Agreement, we have the right to purchase theRaquel Knutsen, on time charter to Repsol, from KNOT within 24 months of its acceptance by Repsol. Additionally, during the term of the Omnibus Agreement, we have the opportunity to purchase from KNOT any newbuild under a long-term charter or existing shuttle tanker in the KNOT fleet that enters into a long-term charter.

Expand global operations in high-growth regions. We seek to expand in proven areas of offshore production, such as the North Sea and Brazil, and in new production areas as they are developed. We believe that KNOT’s leading market position, operational expertise and strong customer relationships will enable us to have early access to new production projects worldwide.

Manage our fleet and deepen our customer relationships to continue to provide a stable base of cash flows. We intend to maintain and grow our cash flows by focusing on strong customer relationships and actively seeking the extension and renewal of existing charters in addition to new opportunities to serve our customers. KNOT charters its current fleet to a number of the world’s leading energy companies. We believe the close relationships that KNOT has with these companies will provide attractive opportunities for us. We continue to incorporate safety, health, security and environmental stewardship into all aspects of vessel design and operation in order to satisfy our customers and comply with national and international rules and regulations.

We can provide no assurance, however, that we will be able to implement our business strategies described above. For further discussion of the risks that we face, please read “Item"Item 3. Key Information—Risk Factors."

Shuttle Tanker Market

A shuttle tanker is a specialized vessel designed to transport crude oil and condensates from offshore oil field installations to onshore terminals and refineries. Shuttle tankers are equipped with sophisticated loading systems and dynamic positioning systems that allow the vessels to load cargo safely and reliably from oil field installations, even in harsh weather conditions.

Shuttle tankers are often described as “floating"floating pipelines," because these vessels typically shuttle oil from offshore installations to onshore facilities in much the same way a pipeline would transport oil along the ocean floor. Shuttle tankers can be either purpose-built or converted from existing conventional oil tankers.

The advantages of shuttle tankers as compared to pipelines include:

    the use of shuttle tankers is a more flexible option than pipelines for the transportation of oil from the oil field to onshore terminals and provides destination flexibility for the customers;



shuttle tankers provide a more flexible solution to declining production profiles and abandonment as a pipeline has a fixed capacity, whereas shuttle tanker capacity may be adjusted through reduced frequency of calls or reduced number of vessels serving a field;



shuttle tanker operators may provide back-up capacity during times when existing transportation infrastructure is closed for maintenance or otherwise unavailable, which would enable uninterrupted production;



shuttle tankers require less significant up-front investment than pipelines; and



shuttle tankers provide customers the benefit of purchasing unblended crude qualities, whereas pipelines usually provide a blend of different crude qualities as several oilfields may be connected to the same pipeline. A shuttle tanker may load at several fields during one single voyage, but oil from different fields may be kept separated in different compartments onboard.

Shuttle tankers primarily differ from conventional oil tankers based on two significant features. First, shuttle tankers are fitted with position-keeping equipment enabling them to remain in a position without the assistance of tugs or mooring to installations. Second, shuttle tankers are equipped with bow-loading equipment and, in some cases, also fitted with equipment for submerged turret loading. Conventional oil tankers load from an offshore field installation usually through a taut hawser (mooring line onboard the discharging unit) operation and/or with tug assistance. In certain cases, dedicated shuttle tanker newbuilds are required to service the specific requirements of oil fields and installations. At times, conventional oil tankers can be converted to shuttle tankers after a substantial upgrade and investment in equipment.


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Our Fleet

The following table provides information about the tensixteen shuttle tankers in our fleet:fleet as of April 10, 2019:

Shuttle Tanker

  Capacity
(dwt)
   Built   Current
Operating
Region
  Charter 
        Type  Charterer  Term 

Fortaleza Knutsen

   106,316     2011    Brazil  Bareboat charter  Transpetro   2023  

Recife Knutsen

   105,928     2011    Brazil  Bareboat charter  Transpetro   2023  

Bodil Knutsen

   157,644     2011    North Sea  Time Charter  Statoil   2017(1)(2) 

Windsor Knutsen

   162,362     2007    Brazil  Time Charter  BG Group   2017(2)(3) 

Carmen Knutsen

   157,000     2013    Brazil  Time Charter  Repsol   2023(4) 

Hilda Knutsen

   123,000     2013    North Sea  Time Charter  ENI   2018(5) 

Torill Knutsen

   123,000     2013    North Sea  Time Charter  ENI   2018(5) 

Dan Cisne

   59,000     2011    Brazil  Bareboat charter  Transpetro   2023  

Dan Sabia

   59,000     2012    Brazil  Bareboat charter  Transpetro   2024  

Ingrid Knutsen

   112,000     2013    North Sea  Time Charter  ExxonMobil   2024(5) 

(1)
 
  
  
  
 Charter 
 
 Capacity
(dwt)
  
 Current
Operating
Region
 
Shuttle Tanker
 Built Type Charterer Term 

Fortaleza Knutsen

  106,316  2011 Brazil Bareboat charter Transpetro  2023 

Recife Knutsen

  105,928  2011 Brazil Bareboat charter Transpetro  2023 

Bodil Knutsen

  157,644  2011 North Sea Time Charter Equinor  2020(1)

Windsor Knutsen

  162,362  2007 Brazil Time Charter Shell  2019(1)(2)

Carmen Knutsen

  157,000  2013 Brazil Time Charter Repsol  2023(3)

Hilda Knutsen

  123,000  2013 North Sea Time Charter ENI  2022(3)

Torill Knutsen

  123,000  2013 North Sea Time Charter ENI  2019(1)

Dan Cisne

  59,000  2011 Brazil Bareboat charter Transpetro  2023 

Dan Sabia

  59,000  2012 Brazil Bareboat charter Transpetro  2024 

Ingrid Knutsen

  112,000  2013 North Sea Time Charter ExxonMobil  2024(1)

Raquel Knutsen

  152,000  2015 Brazil Time Charter Repsol  2025(4)

Tordis Knutsen

  156,000  2016 Brazil Time Charter Shell  2022(5)

Vigdis Knutsen

  156,000  2017 Brazil Time Charter Shell  2022(5)

Lena Knutsen

  156,000  2017 Brazil Time Charter Shell  2022(5)

Brasil Knutsen

  154,000  2013 Brazil Time Charter Galp  2022(6)

Anna Knutsen

  152,000  2017 Brazil Time Charter Galp  2022(6)

(1)
Customer has the option to extend the charter for up to two one-year periods.
(2)Pursuant to the Omnibus Agreement, KNOT agreed in certain circumstances to guarantee the payments of the hire rate under the existing charters for a period of five years from the closing date of our IPO. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Omnibus Agreement—Guarantees Relating to theBodil Knutsen and theWindsor Knutsen.”
(3)Customer has the option to extend the charter for up to six one-year periods.
(4)Customer has the option to extend the charter for up to three one-year periods.
(5)Customer has the option to extend for up to five one-year periods.

The following table provides information about the additional vessel that we currently have the right to purchase from KNOT pursuant to the Omnibus Agreement:

Shuttle Tanker

  Capacity
(dwt)
   Delivered   Charter 
      Type   Charterer   Term 

Raquel Knutsen

   152,000     March 2015     Time Charter     Repsol     2025(1) 

(1)Customer has the option to extend the charter for up to one three-year period and one two-year period.

The acquisition of theRaquel Knutsen is subject to reaching an agreement with KNOT regarding the vessel’s purchase price in accordance with the provisions of the Omnibus Agreement.

In January 2015, KNOT announced an agreement for a long-term time charter with Petrogal (a subsidiary of Galp Energia) of a new DP2 Suezmax shuttle tanker to be delivered in the first quarter of 2017. The vessel has been ordered at Cosco Zhoushan shipyard in China and is expected to be a sister vessel of theRaquel Knutsen. The shuttle tanker is expected to operate in Brazil.

KNOT has also entered into new long-term charters with a subsidiary of BG Group to provide three shuttle tankers in Brazil. The three vessels are expected to be delivered between late 2016 and the first half of 2017. The charters with BG Group will be serviced by three Suezmax-size DP2 shuttle tanker newbuildings currently under construction at Hyundai Heavy Industries in South Korea.

Pursuant to the Omnibus Agreement, the Partnership will have the option to acquire theseextend the charter for up to four newbuilding vessels following acceptance by their charterers. There can be no assuranceone-year periods.

(2)
On December 17, 2018, the Partnership's subsidiary that weowns theWindsor Knutsen and Shell agreed to suspend the vessel's time charter contract for a minimum of 10 months and a maximum of 12 months. The suspension period commenced March 4, 2019. During the suspension period, theWindsor Knutsen will purchase any of these vessels.

operate under a time charter contract with Knutsen Shuttle Tankers Pool AS, on the same terms as the existing time charter contract with Shell.

(3)
Customer has the option to extend the charter for up to three one-year periods.

(4)
Customer has the option to extend the charter for up to one three-year period and one two-year period.

(5)
Customer has the option to extend the charter for up to two five-year periods.

(6)
Customer has the option to extend the charter for up to two three-year periods.

Customers

Customers

For the year ended December 31, 2015,2018, Shell, ENI, Transpetro, ENI, Statoil, Repsol, BG Group,Equinor, ExxonMobil and KNOTGalp accounted for approximately 26%29%, 30%16%, 15%,17, %, 13%, 3%8%, 2%6% and 11%, respectively, of our revenues.

Charters

We generate revenues by charging customers for the loading, transportation and storage of their crude oil using the vessels in our fleet. We provide all of these services under time charters and bareboat charters.

Six        As of April 10, 2019, twelve of our shuttle tankers are chartered under time charters and four of our shuttle tankers are chartered under bareboat charters.


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A time charter is a contract for the use of a specified vessel for a fixed period of time at a specified daily rate. Under time charters, the shipowner is responsible for providing crewing and other vessel operating services, the cost of which is included in the daily rate, while the customer is responsible for substantially all of the voyage expenses. A bareboat charter is a contract for the use of a specified vessel for a fixed period of time at a specified daily or annual rate. Under bareboat charters, the shipowner is not responsible for providing crewing or other operational services, while the customer is responsible for all vessel operating expenses and voyage expenses. In addition, bareboat charters also provide that the shipowner is responsible for repairs or renewals occasioned by latent defects in the vessel existing at the time of delivery, provided such defects have manifested themselves within 18 months after delivery. However, under bareboat charters, the customer is responsible for ordinary repair and maintenance, including drydocking.

    Initial Term; Extensions

The initial term for a time charter or bareboat charter commences upon the vessel’svessel's delivery to the customer. Our time charters include options, exercisable by the customer, to extend the charter’scharter's initial term. Pursuant to the Omnibus Agreement, KNOT has agreed to guarantee the payments of the hire rate under the initial charters for theBodil Knutsen and theWindsor Knutsen for five years from the closing of our IPO. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Omnibus Agreement—Guarantees Relating to theBodil Knutsen and theWindsor Knutsen.” Under the time charters, the customer may also extend the term for periods in which the vessel is off-hire, as described below. Customers under each of our time charters and bareboat charters have rights to terminate the charter prior to expiration of the original or any extended term in specified circumstances.

    Hire Rate

Hire rate refers to the basic payment from the customer for the use of the vessel. Under our time charters, the majority of hire rate is payable monthly in advance, in U.S. Dollars. The hire rate payable under our time charters is either a fixed amount for the firm period of the time charter with escalations to be made in case of option periods or increases annually based on a fixed percentage increase or fixed schedule, in order to enable us to offset expected increases in operating costs. Under our time charters, hire rate payments may be reduced if the vessel does not perform to certain of its specifications, such as if the average vessel speed falls below a guaranteed speed or the amount of fuel consumed to power the vessel under normal circumstances exceeds a guaranteed amount.

The hire rate payable under our bareboat charters is fixed and payable monthly in advance, in U.S. Dollars. The customer is also required to maintain minimum levels of insurance to protect the interests of the customer, the shipowner and mortgagees, if any.

    Off-hire

Under our time charters, when the vessel is off-hire, or not available for service, the customer generally is not required to pay the hire rate, and the shipowner is responsible for all costs. Prolonged off-hire may lead to a termination of the time charter. A vessel generally will be deemed off-hire if there is a loss of time due to, among other things:

    operational deficiencies; drydocking for repairs, maintenance or inspection; equipment breakdowns; or delays due to accidents, crewing strikes, certain vessel detentions or similar problems; or



the shipowner’sshipowner's failure to maintain the vessel in compliance with its specifications and contractual standards or to provide the required crew.

Our bareboat charters do not contain provisions for off-hire.


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    Ship Management and Maintenance

Under our time charters, the shipowner is responsible for the technical management of the vessel and for maintaining the vessel, periodic drydocking, cleaning and painting and performing work required by regulations. KNOT Management providesand KNOT Management Denmark provide these services to our subsidiaries for all our vessels under time charters. Please read “Item"Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions." Under our bareboat charters, the shipowner is not responsible for providing crewing or other operational services and the customer is responsible for all vessel operating expenses and voyage expenses. However, Transpetro has elected to subcontract the technical operation and management of theFortaleza Knutsen,theRecife Knutsen, theDan Cisneand theDan Sabiato an affiliate of KNOT.

    Termination

Each of our time charters and bareboat charters terminates automatically if the applicable vessel is lost or missing. In addition, under certain circumstances, the customer may have an option to terminate the time charter if the vessel is requisitioned by any government for a period of time in excess of the time period specified in the time charter or if at any time the shipowner is in default under the time charter. Under the bareboat charters, the charter is deemed terminated as of the date of any compulsory acquisition of the vessel or requisition for title by any governmental or other competent authority. In addition, the shipowner is generally entitled to suspend performance (but with the continuing accrual to its benefit of hire rate payments and default interest) and terminate the charter if the customer defaults in its payment obligations. Under the time charters and bareboat charters, either party may also terminate the charter in the event of war in specified countries.

        However, under the bareboat charters, in the event of war, hire shall continue to be paid in accordance with the charter until redelivery. In addition, under the bareboat charters, the shipowner has the right to terminate the charter if the customer (1) does not take immediate steps to have the necessary repairs done within a reasonable time or (2) does not arrange and keep certain insurance.

Competition

The shuttle tanker industry is capital intensive and operational expertise is critical, which create high barriers to entry. The shuttle tanker industry is viewed as an integral part of offshore oil production creating a market with few alternative suppliers and therefore a low risk of substitution. A company with a solid track record, knowledge of the market and an experienced, well-trained crew is preferred to a new entrant since the cost and impact of vessel downtime is significant for the customer. Furthermore, the systems in place for operational procedures, such as offshore loading and vetting, have significant value when negotiating contracts with new and existing customers.

According to Fearnley Consultants AS,Fearnresearch, as of February 2016,April 1, 2019, there were approximately 8088 vessels in the world shuttle tanker fleet (including eight15 newbuilds on order). Teekay Offshore Partners L.P. is the largest owner in the shuttle tanker market with approximately 3332 shuttle tankers (including three6 newbuilds on order). KNOT is the second largest owner of shuttle tankers with 3032 shuttle tankers including four(including our vessels and 3 newbuilds on order (excluding our vessels)order). Viken MOLAmerican Eagle Tankers (AET) is the third largest owner of shuttle tankers with five vessels.11 vessels (including 7 newbuilds on order). Petrobras, which owns threetwo vessels, employs a total of 25 existing24 shuttle tankers (including 3 newbuilds on order) through long-term bareboat and time charters. There are other shuttle tanker owners in the industry, but the majoritymost of such owners have a limited fleet size and have chartered vessels out for the long term.

Classification, Inspection and Maintenance

Every large, commercial seagoing vessel must be “classed”"classed" by a classification society. The classification society certifies that the vessel is “in"in class," signifying that the vessel has been built and


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maintained in accordance with the rules of the classification society. In most cases, the classification society is authorized by the flag state to certify that the vessels also compliescomply with applicable rules and regulations of the vessel’svessel's country of registry and the international conventions of which that country is a member. In addition, where surveys are required by international conventions and corresponding laws and ordinances of a flag state, the classification society may undertake them on application or by official order, acting on behalf of the authorities concerned. The classification society also undertakes on request other surveys and checks that are required by regulations and requirements of the flag state. These surveys are subject to agreements made in each individual case and/or to the regulations of the country concerned. For maintenance of the class, regular and extraordinary surveys of hull, machinery, including the electrical plant, and any special equipment classed are required to be performed by the classification society as follows:

    Annual Surveys.  For seagoing vessels, annual surveys are conducted for the hull and the machinery, including the electrical plant and where applicable for special equipment classed, at intervals of 12 months from the date of commencement of the class period indicated in the certificate.

    Intermediate Surveys.  Extended annual surveys are referred to as intermediate surveys and typically are conducted two and one-half years after commissioning and each class renewal. Intermediate surveys may be carried out on the occasion of the second or third annual survey.

    Class Renewal Surveys.  Class renewal surveys, also known as special surveys, are carried out for the ship's hull, machinery, including the electrical plant and for any special equipment classed, at the intervals indicated by the character of classification for the hull. At the special survey, the vessel is thoroughly examined, including ultrasonic gauging, in order to determine the thickness of the steel structures. Should the thickness be found to be less than class requirements, the classification society would require steel renewals. Substantial amounts of money may have to be spent for steel renewals to pass a special survey if the vessel experiences excessive wear and tear. In lieu of the special survey every five years, a shipowner has the option of arranging with the classification society for the vessel's hull or machinery to be on a continuous survey cycle, in which every part of the vessel would be surveyed within a five-year cycle. At an owner's application, the surveys required for class renewal may be split according to an agreed schedule to extend over the entire period of class. This process is referred to as continuous class renewal and though we have not exercised this option for our existing vessels, we may do so in the future.

        

Annual Surveys. For seagoing vessels, annual surveys are conducted for the hull and the machinery, including the electrical plant and where applicable for special equipment classed, at intervals of 12 months from the date of commencement of the class period indicated in the certificate.

Intermediate Surveys. Extended annual surveys are referred to as intermediate surveys and typically are conducted two and one-half years after commissioning and each class renewal. Intermediate surveys may be carried out on the occasion of the second or third annual survey.

Class Renewal Surveys. Class renewal surveys, also known as special surveys, are carried out for the ship’s hull, machinery, including the electrical plant and for any special equipment classed, at the intervals indicated by the character of classification for the hull. At the special survey, the vessel is thoroughly examined, including ultrasonic gauging, in order to determine the thickness of the steel structures. Should the thickness be found to be less than class requirements, the classification society would require steel renewals. Substantial amounts of money may have to be spent for steel renewals to pass a special survey if the vessel experiences excessive wear and tear. In lieu of the special survey every five years, a shipowner has the option of arranging with the classification society for the vessel’s hull or machinery to be on a continuous survey cycle, in which every part of the vessel would be surveyed within a five-year cycle. At an owner’s application, the surveys required for class renewal may be split according to an agreed schedule to extend over the entire period of class. This process is referred to as continuous class renewal and though we have not exercised this option for our existing vessels, we may do so in the future.

All of the vessel’svessel's areas subject to survey as defined by the classification society are required to be surveyed at least once per class period, unless shorter intervals between surveys are prescribed elsewhere. The period between two subsequent surveys of each area must not exceed five years.

A vessel’svessel's underwater parts are required to be inspected every 24 to 36 months by the classification society. Drydocking of vessels is done, at the minimum, every 60 months until the vessel is 15 years old and every 30 months thereafter. If any defects are found, the classification surveyor will issue a condition of class that must be rectified by the shipowner.

Most insurance underwriters make it a condition for insurance coverage that a vessel be certified as “in class”"in class" by a classification society that is a member of the International Association of Classification Societies. All of our vessels have been awarded International Safety Management certification and are certified as being “in class”"in class" by DNV GL or ABS, the Norwegian and American classification society.societies, respectively. All new and secondhand vessels that we purchase must be certified prior to their delivery under the standard purchase contracts and memoranda of agreement. If the vessel is not certified on the date of closing, we will have no obligation to take delivery of the vessel.


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KNOT, through certain of its subsidiaries, operates as our ship manager, and carries out inspections of the ships on a regular basis, both at sea and while the vessels are in port, as well as carrying out inspections and ship audits to verify conformity with managers’managers' reports. The results of these inspections result in a report containing recommendations for improvements to the overall condition of the vessel, maintenance, safety and crew welfare. Based in part on these evaluations, we create and implement a program of continual maintenance and improvement for our vessels and their systems.

Safety, Management of Ship Operations and Administration

Safety and environmental compliance is our top operational priority. Our vessels are operated in a manner intended to protect the safety and health of our employees, the general public and the environment. We actively manage the risks inherent in our business and are committed to eliminating incidents that threaten the safety and integrity of our vessels, such as groundings, fires, collisions and petroleum spills. We are also committed to reducing emissions and waste generation. We have established key performance indicators to facilitate regular monitoring of our operational performance. We set targets on an annual basis to drive continuous improvement, and we review performance indicators monthly to determine if remedial action is necessary to reach our targets. KNOT’sKNOT's shore staff performs a full range of technical, commercial and business development services for us. This staff also provides administrative support to our operations in finance, accounting and human resources.

KNOT, through certain of its subsidiaries, assists us and our operating subsidiaries in managing our ship operations. DNV GL, a Norwegian classification society, has approved KNOT’sKNOT's safety management system, which has been implemented on all our ships, as complying with the IMO’sIMO's International Management Code for the Safe Operation of Ships and Pollution Prevention (the “ISM Code”"ISM Code"), International Standards Organization (“ISO”("ISO") 9001 for Quality Assurance, ISO 14001 for Environment Management Systems and OHSAS 18001, for Occupational Health and Safety Management System, and this system has been implemented on all our ships.System. As part of KNOT’sKNOT's ISM Code compliance, all the vessels’vessels' safety management certificates are being maintained through ongoing internal audits performed by KNOT’sKNOT's certified internal auditors and external audits performed by DNV GL or the respective flag state. Subject to satisfactory completion of these internal and external audits, certification is valid for five years.

KNOT provides, through certain of its subsidiaries, expertise in various functions critical to the operations of our operating subsidiaries. We believe this arrangement affords a safe, efficient and cost-effective operation. KNOT’sKNOT's subsidiaries also provide to us access to human resources, financial and other administrative functions pursuant to technical management agreements. Please read “Item"Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Technical Management Agreements.

"

Critical ship management functions that are provided by KNOT or its subsidiaries through various of its offices around the world include:

    technical management, maintenance and dockings;



crew management;



procurement, purchasing and forwarding logistics;



marine operations;



vetting, oil major and terminal approvals;



shipyard supervision;



insurance; and



financial services.

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    These functions are supported by onboard and onshore systems for maintenance, inventory, purchasing and budget management. In addition, KNOT’sKNOT's day-to-day focus on cost control will be applied to our operations. We believe that the adoption of common standards should also result in operational efficiencies, including with respect to crew training and vessel management, equipment operation and repair, and spare parts ordering.

    Risk of Loss, Insurance and Risk Management

    The operation of any vessel, including shuttle tankers, has inherent risks. These risks include mechanical failure, personal injury, collision, property loss, vessel or cargo loss or damage and business interruption due to political circumstances in foreign countries or hostilities. In addition, there is always an inherent possibility of marine disaster, including explosion, spills and other environmental mishaps, and the liabilities arising from owning and operating vessels in international trade. We believe that our present insurance coverage is adequate to protect us against the accident-related risks involved in the conduct of our business and that we maintain appropriate levels of environmental damage and pollution insurance coverage consistent with standard industry practice. However, not all risks can be insured, and there can be no guarantee that any specific claim will be paid, or that we will always be able to obtain adequate insurance coverage at reasonable rates.

    We have obtained hull and machinery insurance on all our vessels to insure against marine and war risks, which include the risks of damage to our vessels, salvage or towing costs, and also insure against actual or constructive total loss of any of our vessels. However, our insurance policies contain deductible amounts for which we are responsible. We have also arranged additional total loss coverage for each vessel. This coverage, which is called hull interest and freight interest coverage, provides us additional coverage in the event of the total loss or the constructive total loss of a vessel.

    We have also obtained loss of hire insurance to protect us against loss of income in the event one of our vessels cannot be employed due to damage that is covered under the terms of our hull and machinery insurance. Under our loss of hire policies, our insurer will pay us the hire rate agreed in respect of each vessel for each day, in excess of a certain number of deductible days, for the time that the vessel is out of service as a result of damage, for a maximum of 180 days. The number of deductible days for the vessels in our fleet is 14 days per vessel.

    All of our hull and machinery, hull interest and freight interest and loss of hire insurance policies are written on the Norwegian Marine Insurance Plan (“NMIP”("NMIP"), which through the hull and maintenance coverage also offers comprehensive collision liability coverage of up to the insured hull and maintenance value of the vessel. NMIP is based on an “all"all risk principle”principle" and offers what is considered to be the most comprehensive insurance obtainable in any of the world’sworld's marine markets today. The agreed deductible on each vessel averages $150,000 for the shuttle tankers in our fleet.

    Protection and indemnity insurance, which covers our third-party legal liabilities in connection with our shipping activities, is provided by a P&I club. This includes third-party liability and other expenses related to the injury or death of crew members, passengers and other third-party persons, loss or damage to cargo, claims arising from collisions with other vessels or from contact with jetties or wharves and other damage to other third-party property, including pollution arising from oil or other substances, and other related costs, including wreck removal. Subject to the capping discussed below, our coverage, except for pollution, is unlimited.

    Our current protection and indemnity insurance coverage for pollution is $1 billion per vessel per incident. The 13 P&I clubs that comprise the International Group of Protection and Indemnity Clubs insure approximately 90% of the world’sworld's commercial tonnage and have entered into a pooling agreement to reinsure each association’sassociation's liabilities. Each P&I club has capped its exposure in

    this pooling agreement so that the maximum claim covered by the pool and its reinsurance would be approximately $1 billion per accident or occurrence. We are a member of Norwegian P&I Club Skuld.


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    As a member of these P&I clubs, we are subject to a call for additional premiums based on the clubs’clubs' claims record, as well as the claims record of all other members of the P&I clubs comprising the International Group. However, our P&I clubs have reinsured the risk of additional premium calls to limit our additional exposure. This reinsurance is subject to a cap, and there is the risk that the full amount of the additional call would not be covered by this reinsurance.

    The insurers providing the covers for hull and machinery, hull interest and freight interest, protection and indemnity and loss of hire insurances have confirmed that they will consider the shuttle tankers as vessels for the purpose of providing insurance.

    We use in our operations KNOT’sKNOT's risk management program that includes, among other things, risk analysis tools, maintenance and assessment programs, a seafarers competence training program, seafarers workshops and membership in emergency response organizations. We benefit from KNOT’sKNOT's commitment to safety and environmental protection as certain of its subsidiaries assist us in managing our vessel operations.

    KNOT has achieved certification under the standards reflected in ISO 9001 for quality assurance, ISO 14001 for environment management systems and the ISM Code on a fully integrated basis.

    Environmental and Other Regulation

      General

    Our business and the operation of our vessels are significantly affected by international conventions and national, state and local laws and regulations in the jurisdictions in which our vessels operate, as well as in the country or countries of their registration. Because these conventions, laws and regulations change frequently, we cannot predict the ultimate cost of compliance or their impact on the resale price or useful life of our vessels. While we believe that we are in substantial compliance with the current environmental laws and regulations that apply to our operations, there is no assurance that such compliance or compliance with current laws and regulations or amended or newly adopted laws and regulations can be maintained in the future. Additional conventions, laws, and regulations may be adopted that could limit our ability to do business or increase the cost of our doing business and that may materially adversely affect our operations. We are required by various governmental and quasi-governmental agencies to obtain permits, licenses and certificates with respect to our operations. Subject to the discussion below and to the fact that the kinds of permits, licenses and certificates required for the operations of the vessels we own depend on a number of factors, we believe that we will be able to continue to obtain all permits, licenses and certificates material to the conduct of our operations.

      International Maritime Organization

    The IMO is the United Nations’Nations' agency responsible for maritime safety.developing measures to improve the safety and security of international shipping and to prevent marine pollution from ships. IMO regulations relating to pollution prevention for oil tankers have been adopted by many of the jurisdictions in which our tanker fleet operates. Under IMO regulations and subject to limited exceptions, a tanker must be of double-hull construction, a mid-deck design with double-side construction or another approved design ensuring the same level of protection against oil pollution. All of our tankers are double-hulled.

    Many countries, but not the United States, have ratified and follow the liability regime adopted by the IMO and set out in the International Convention on Civil Liability for Oil Pollution Damage, 1969, as updated by the 1992 Protocol (the “CLC”"CLC"). Under this convention, a vessel’svessel's registered owner is strictly liable for pollution damage caused in the territorial waters of a contracting state by discharge of persistent oil (e.g. crude oil, fuel oil, heavy diesel oil or lubricating oil), subject to certain defenses. The right to limit liability to specified amounts that are periodically revised is forfeited under the CLC when the spill is caused by the owner’sowner's actual fault or when the spill is caused by the owner’sowner's intentional or


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    reckless conduct. Vessels trading to contracting states must provide evidence of insurance covering the limited liability of the owner. In jurisdictions where the CLC has not been adopted, various legislative regimes or common law governs, and liability is imposed either on the basis of fault or in a manner similar to the CLC. IMO regulations also include SOLAS, including amendments to SOLAS implementing the International Security Code for Ports and Ships (the “ISPS”"ISPS"), the ISM Code and the International Convention on Load Lines of 1966. The IMO Marine Safety Committee has also published guidelines for vessels with dynamic positioning systems, which would apply to shuttle tankers. SOLAS provides rules for the construction of and equipment required for commercial vessels and includes regulations for safe operation. Flag states that have ratified the CLC generally utilize the classification societies, which have incorporated SOLAS requirements into their class rules, to undertake surveys to confirm compliance.

    SOLAS and other IMO regulations concerning safety, including those relating to treaties on training of shipboard personnel, lifesaving appliances, radio equipment and the global maritime distress and safety system, are applicable to our operations. Non-compliance with IMO regulations, including SOLAS, the ISM Code, and the ISPS, or the requirements for shuttle tankers under the their flag

    regulations, may subject us to increased liability or penalties, may lead to decreases in available insurance coverage for affected vessels and may result in the denial of access to or detention in some ports. For example, the U.S. Coast Guard and European Union (the “EU”"EU") authorities have indicated that vessels not in compliance with the ISM Code will be prohibited from trading in U.S. and EU ports.

    The requirements contained in the ISM Code govern our operations. Among other requirements, the ISM Code requires vessel operators to obtain a safety management certification for each vessel they manage, evidencing the shipowner’sshipowner's development and maintenance of an extensive safety management system. Each of the existing vessels in our fleet is currently ISM Code-certified, and we expect to obtain safety management certificates for each newbuild upon delivery.

    The International Labour Organization (the “ILO”"ILO") is a specialized agency of the United Nations with headquarters in Geneva, Switzerland. The ILO has adopted the Maritime Labor Convention 2006 (the “MLC 2006”"MLC 2006") to improve safety onboard merchant vessels. A Maritime Labor Certificate and a Declaration of Maritime Labor Compliance is required to ensure compliance with the MLC 2006 for all ships above 500 gross tons in international trade. On August 20, 2012, the required number of countries ratified the MCL 2006 and it came into force on August 20, 2013. The MLC 2006 requires us to develop new procedures to ensure full compliance with its requirements. Each of the existing vessels in our fleet is currently MLC 2006-certified, and we expect to obtain MLC 2006 certificates for each newbuild upon delivery.

    The IMO has adopted the International Convention for the Prevention of Pollution from Ships (“MARPOL”("MARPOL"), including Annex VI to MARPOL that sets limits on sulfur dioxide and nitrogen oxide emissions from ship exhausts and prohibits deliberate emissions of ozone depleting substances. Annex VI applies to all ships and, among other things, imposes a global cap on the sulfur content of fuel oil and allows for specialized areas to be established internationally with even more stringent controls on sulfur emissions. For vessels 400 gross tons and greater, platforms and drilling rigs, Annex VI imposes various survey and air pollution prevention certification requirements. Moreover, recent amendments to Annex VI require the imposition ofregulations impose progressively stricter limitations on sulfur emissions from ships. TheseAs of January 2, 2015, these limitations require that fuels of vessels in covered Emission Control Areas (“ECAs”("ECAs") contain no more than 1%0.1% sulfur. The North American ECA came into force on August 1, 2012. The North American ECA includesFor non-ECA areas, subject to the exclusive sovereignty of the United States and extends up to 200 nautical miles from the coasts of the United States, which area includes parts of the U.S. Gulf of Mexico. In addition, the United States Caribbean ECA took effect in January 2014. The U.S. Caribbean ECA includes areas subject to the exclusive sovereignty of the United States off the coasts of the Commonwealth of Puerto Rico and the U.S. Virgin Islands. Consequently, the sulfur limit in marine fuel is capped at 1%, which is the capped amount for all other ECA areas since July 1, 2010. These capped amounts will thensulfur limitations decrease progressively until they reach the global limit of 0.5% bythat applies on and after January 1, 2020 for non-ECA areas and 0.1% by January 1, 2015 for ECA areas, including the North American ECA. The amendments2020. MARPOL Annex VI also establishestablishes new tiers of stringent nitrogen oxide emissions standards for new marine engines, depending on their date of installation. All of our vessels are in compliance with these requirements.


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    In addition, there are several other regulatory requirements to use low sulfur fuel or restrict or regulate emissions from vessels that are either already in force or are upcoming. The EU Directive 33/2005 requiring the use of low sulfur fuel came into force on January 1, 2010. Under this legislation, vessels are required to burn fuel with sulfur content below 0.1% while berthed or anchored in an EU port. The California Air Resources Board requires vessels to burn fuel with 0.1% sulfur content or less within 24 nautical miles of California as of January 1, 2014. As of January 1, 2015, all vessels operating within ECAs worldwide must comply with 0.1% sulfur requirements. Currently, the only grade of fuel meeting 0.1% sulfur content requirement is low sulfur marine gas oil. From July 1, 2010, the reduction of applicable sulfur content limits in the North Sea, the Baltic Sea and the English Channel Sulfur Control Areas will be 0.1%. All of our vessels are able to comply with applicable low sulfur fuel requirements.

    The IMO has negotiated international conventions that impose liability for oil pollution and other environmental harms in international waters and the territorial waters of the signatory to such conventions such as the International Convention for the Control and Management of Ships’Ships' Ballast Water and Sediments (the “BWM Convention”"BWM Convention"). The BWM Convention’sConvention's implementing regulations call for a phased introduction of mandatory ballast water exchange requirements (beginning(which began in 2009), to be replaced in time with a requirement for mandatory ballast water treatment. The BWM Convention will not become effective until 12 months after it has been adopted by 30 states, the combined merchant fleets of which represent not less than 35% of the gross tonnage of the world’s merchant shipping. Though this has not occurred to-date, the IMO has passed a resolution encouraging the ratification of the BWM Convention and calling upon those countries that have already ratified to encourage the installation of ballast water management systemsentered into force on new ships.September 8, 2017. As referenced below, the U.S. Coast Guard issued new ballast water management rules on March 23, 2012. Under the requirements of the BWM Convention for units with ballast water capacity more than 5,000 cubic meters that were constructed in 2011 or before, ballast water management exchange or treatment will bewere accepted until 2016. From 2016 (or not later than the first intermediate or renewal survey after 2016), only ballast water treatment will be accepted by the BWM Convention. Installation of ballast water treatment systems will be needed on our vessels once the convention has been ratified.vessels. Although the cost to comply with IMO ballast water treatment regulations for our ten vessels is difficult to estimate, due to uncertainty regarding the final regulations, it is anticipated to be approximately $4 million.

    $1.5-$2.0 million per vessel for theFortaleza Knutsen,Recife Knutsen,Bodil Knutsen,Windsor Knutsen,Carmen Knutsen, Dan Cisne andDan Sabia. TheAnna Knutsen, theBrasil Knutsen, theLena Knutsen, theTorill Knutsen, theHilda Knutsen, theIngrid Knutsen, theRaquel Knutsen theVigdis Knutsen and theTordis Knutsen have all installed IMO approved ballast water treatment system.

    The International Convention on Civil Liability for Bunker Oil Pollution 2001 (the “Bunker Convention”"Bunker Convention") provides a liability, compensation and compulsory insurance system to protect and reimburse the victims of oil pollution damage in jurisdictional waters of ratifying states caused by discharges of bunker fuel. The Bunker Convention became effective in 2008 and imposes strict liability on shipowners for certain pollution damage. Registered owners of any seagoing vessel and seaborne craft over 1,000 gross tonnage, of any type whatsoever, and registered in a signatory state (a “State Party”"State Party"), or entering or leaving a port in the territory of a State Party, will be required to maintain insurance that meets the requirements of the Bunker Convention and to obtain a certificate issued by a State Party attesting that such insurance is in force. The state-issued certificate must be carried onboard at all times. P&I clubs in the International Group issue the required Bunkers Convention “Blue Cards”"Blue Cards" to enable signatory states to issue certificates. All of our vessels have received “Blue Cards”"Blue Cards" from their P&I club and are in possession of a CLC State-issued certificate attesting that the required insurance coverage is in force.

    The IMO continues to review and introduce new regulations. It is impossible to predict what additional regulations, if any, may be passed by the IMO and what effect, if any, such regulation may have on our operations.

      European Union Environmental Regulation of Vessels

    In waters of the EU, our vessels are subject to regulation EU-level directives implemented by the various nations through laws and regulations adopting these requirements. These laws and regulations prescribe measures to prevent pollution, protect the environment, support maritime safety and set out civil and criminal penalties that are being progressively incorporated into domestic legislation. For instance, the EU has adopted legislation (EU Directive 2009/16/EC) that: bans from EU waters


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    manifestly sub-standard vessels (defined as vessels that have been detained twice by EU port authorities, in the preceding two years, after July 2003); creates obligations on the part of EU member port states to inspect at least 24% of vessels using these ports annually; provides for increased surveillance of vessels posing a high risk to maritime safety or the marine environment; and provides the EU with greater authority and control over classification societies, including the ability to seek to suspend or revoke the authority of negligent societies. If deficiencies are found that are clearly hazardous to safety, health or the environment, the state is required to detain the vessel until the deficiencies are addressed. Member states are also required to implement a system of penalties for breaches of these standards. EU Directive 2009/16/EC introducesintroduced a new harmonized and coordinated regime for port state control inspections and from January 1, 2011 a newan on-line register to make public both the poorly performing shipping companies (who will attract more intensive and coordinated inspections) and those with good records. Like the IMO, the EU has adopted regulations phasing out single-hull tankers. All of our tankers are double-hulled.

    Several regulatory requirements to use low sulfur fuel are in force or upcoming. See discussion of “low"low sulfur fuel”fuel" regulations above.

    Since January 1, 2012 a voluntary ballast water management regime has been operating in the Mediterranean Sea. The regime, which effectively urges ships to undertake ballast water exchange before entering the Mediterranean Sea, is to remain in place until the BWM Convention comes into force.

    The EU is currently considering other proposals to further regulate vessel operations. We cannot predict what additional legislation or regulations, if any, may be promulgated by the EU or any other country or authority. The trend, however, is towards increasing regulation and our expectation is that requirements will become more extensive and more stringent over time. If more stringent requirements are put in effect in the future, they may require, individually or in the aggregate, significant expenditures and could increase our operating costs, potentially affecting financial performance.

      North Sea Environmental Regulation of Vessels

    Our shuttle tankers currently operate in the North Sea and Brazil.

    In addition to the regulations imposed by the IMO and the EU, countries having jurisdiction over North Sea areas impose further regulatory requirements on operations in those areas, including MCAMaritime and Coastguard Agency regulations in the United Kingdom and NMDNorwegian Maritime Directorate regulations in Norway. These regulatory requirements, together with additional requirements imposed by operators in North Sea oil fields, require that we make further expenditures for sophisticated equipment, reporting and redundancy systems on the shuttle tankers and for the training of seagoing staff. Additional regulations and requirements may be adopted or imposed that could limit our ability to do business or further increase the cost of doing business in the North Sea.

    In Norway, the Norwegian Pollution Control Authority requires the installation of volatile organic compound emissions (“VOC”("VOC") control equipment, on most shuttle tankers serving the Norwegian continental shelf. The license holders of the oil field are responsible for the costs to ensure that shuttle tankers operating in the field are using appropriate VOC control equipment. In recent contracts, the charterers have requested owners to install such equipment against an increase in the hire rate. We have installed the VOC control equipment required to operate on the Norwegian continental shelf in each of theFortaleza Knutsen, theRecife Knutsen, theBodil Knutsen, theWindsor Knutsen,theHilda Knutsen,theTorill Knutsen and theIngrid Knutsen.

      Brazilian Environmental Regulation of Vessels

    In Brazil, the environmental requirements are defined by the field operator and in most cases Petrobras where it is involved.involved are required to establish internal procedures to manage pollution risks, which must be approved by the competent environmental authority. Brazilian environmental law includes international treaties and conventions to which Brazil is a party, as well as federal, state and local laws, regulations and permit requirements related to the protection of health and the environment. Brazilian oil and gas businessThe petroleum industry in Brazil is subject to extensive regulations by several governmental agencies, including the National Agency for Oil and Gas, of Petroleum,


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    the Brazilian Navy and the Brazilian Authority for Environmental AffairsInstitute of the Environment and Renewable Natural Resources. Failure to comply may subject us to administrative, criminal and civil liability, with strict liability in administrative and civil cases.

      United States Environmental Regulation of Vessels

    In the United States, our operations are subject to federal and state laws and regulations that require usvessel owners and operators to obtain and maintain specified permits or governmental approvals; control the discharge of materials into the environment; remove and cleanup materials that may harm the environment; orand otherwise comply with regulations intended to protect the environment. WeVessel operations are subject to the jurisdiction of the U.S. Coast Guard, the National Transportation Safety Board, the U.S. Customs and Border Protection, the Department of Interior, the Bureau of Ocean Energy Management, and the Bureau of Safety and Environmental Enforcement, as well as classification societies such as the American Bureau of Shipping. The United States has enacted an extensive regulatory and liability regime for the protection and cleanup of the environment from oil spills, including discharges of oil cargoes, bunker fuels or lubricants, primarily through the Oil Pollution Act of 1990 (“("OPA 90”90") and the Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”("CERCLA").

    Oil Pollution Act and CERCLACERCLA..    CERCLA applies to the discharge of “hazardous substances”"hazardous substances" rather than “oil”"oil" and imposes strict joint and several liability upon the owners, operators or bareboat charterers of vessels for cleanup costs and damages arising from discharges of hazardous substances. We believe that petroleum products should not be considered hazardous substances under CERCLA, but additives to oil or lubricants used on vessels might fall within its scope.

    OPA 90 affects all owners, bareboat charterers and operators whose vessels trade to the United States or its territories or possessions or whose vessels operate in U.S. waters, which include the U.S. territorial sea and 200-mile exclusive economic zone around the United States.

    Under OPA 90, vessel owners, operators and bareboat charterers are “responsible parties”"responsible parties" and are jointly, severally and strictly liable (unless the oil spill results solely from the act or omission of a third party, an act of God or an act of war and the responsible party reports the incident and reasonably cooperates with the appropriate authorities) for all containment and cleanup costs and other damages arising from discharges or threatened discharges of oil from their vessels. These other damages are defined broadly to include:

      natural resources damages and the related assessment costs;



    real and personal property damages;



    net loss of taxes, royalties, rents, fees and other lost revenues;



    lost profits or impairment of earning capacity due to property or natural resources damage;



    net cost of public services necessitated by a spill response, such as protection from fire, safety or health hazards; and



    loss of subsistence use of natural resources.

    OPA 90 limits the liability of responsible parties in an amount it periodically updates. The liability limits do not apply if the incident was proximately caused by violation of applicable U.S. federal safety, construction or operating regulations, including IMO conventions to which the United States is a signatory, or by the responsible party’sparty's gross negligence or willful misconduct, or if the responsible party fails or refuses to report the incident or to cooperate and assist in connection with the oil removal activities. Liability under CERCLA is also subject to limits unless the incident is caused by gross negligence, willful misconduct or a violation of certain regulations. We currently maintain for each of our vessel’svessel's pollution liability coverage in the maximum coverage amount of $1 billion per


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    incident. A catastrophic spill could exceed the coverage available, which could harm our business, financial condition and results of operations.

    Under OPA 90, with limited exceptions, all newly built or converted tankers delivered after January 1, 1994 and operating in U.S. waters must be double-hulled. All of our tankers are double-hulled. OPA 90 also requires owners and operators of vessels to establish and maintain with the U.S. Coast Guard evidence of financial responsibility in an amount at least equal to the relevant limitation amount for such vessels under the statute. The U.S. Coast Guard has implemented regulations requiring that an owner or operator of a fleet of vessels must demonstrate evidence of financial responsibility in an amount sufficient to cover the vessel in the fleet having the greatest maximum limited liability under OPA 90 and CERCLA. Evidence of financial responsibility may be demonstrated by insurance, surety bond, self-insurance, guaranty or an alternate method subject to approval by the U.S. Coast Guard. Under the self-insurance provisions, the shipowner or operator must have a net worth and working capital, measured in assets located in the United States against liabilities located anywhere in the world, that exceeds the applicable amount of financial responsibility. We have complied with the U.S. Coast Guard regulations by using self-insurance for certain vessels and obtaining financial guaranties from a third party for the remaining vessels. If other vessels in our fleet trade to the United States in the future, we expect to provide guaranties through self-insurance or obtain guaranties from third-party insurers.

    OPA 90 and CERCLA permit individual U.S. states to impose their own liability regimes with regard to oil or hazardous substance pollution incidents occurring within their boundaries, and some states have enacted legislation providing for unlimited strict liability for spills. Several coastal states, such as California, Washington and Alaska require state-specific evidence of financial responsibility and vessel response plans. We intend to comply with all applicable state regulations in the ports where our vessels call.

    Owners or operators of vessels, including tankers operating in U.S. waters are required to file vessel response plans with the U.S. Coast Guard, and their tankers are required to operate in compliance with their U.S. Coast Guard approved plans. Such response plans must, among other things:

      address a “worst case”"worst case" scenario and identify and ensure, through contract or other approved means, the availability of necessary private response resources to respond to a “worst"worst case discharge;

    "

    describe crew training and drills; and



    identify a qualified individual with full authority to implement removal actions.

    In addition, we conduct regular oil spill response drills in accordance with the guidelines set out in OPA 90. The U.S. Coast Guard has announced it intends to propose similar regulations requiring certain vessels to prepare response plans for the release of hazardous substances. OPA 90 and CERCLA do not preclude claimants from seeking damages resulting from the discharge of oil and hazardous substances under other applicable law, including maritime tort law. The application of this doctrine varies by jurisdiction.

    Clean Water ActAct..    The United States Clean Water Act (“CWA”("CWA") prohibits the discharge of oil or hazardous substances in United States navigable waters unless authorized by a permit or exemption, and imposes strict liability in the form of penalties for unauthorized discharges. The CWA also imposes substantial liability for the costs of removal, remediation and damages and complements the remedies available under OPA 90 and CERCLA. The U.S. Environmental Protection Agency (the “EPA”"EPA") has enacted rules governing the regulation of ballast water discharges and other discharges incidental to the normal operation of vessels within U.S. waters. ThisThe EPA authorized these incidental discharges pursuant to a permit which the EPA has designated as the Vessel General Permit for Discharges Incidental to the


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    Normal Operation of Vessels (the “VGP”"VGP"), incorporateswhich incorporated the current U.S. Coast Guard requirements for ballast water management as well as supplemental ballast water requirements, and includes limits applicable to 26 specific discharge streams, such as deck runoff, bilge water and gray water.

    The EPA updated the VGP in 2013 to incorporate numeric effluent limits for ballast water expressed as the maximum concentration of living organisms in ballast water, as opposed to the prior non-numeric requirements. These requirements correspond with the IMO’sIMO's requirements under the BWM Convention, as discussed above. The permit also contains maximum discharge limitations for biocides and residuals. The numeric effluent limits in the new VGP will not apply to all vessels. Those that will be required to comply with the numeric limits will do so under a staggered implementation schedule. Certain existing vessels must achieve the numeric effluent limits for ballast water by the first drydocking after January 1, 2014 or January 1, 2016, depending on the vessel size. Newbuilds are subject to the numeric limits upon the effective date of the new permit. Vessels that have deferred deadlines for meeting the numeric standards must meet Best Management Practices, which are substantially similar to the requirements under the previous VGP.

    The new VGP includes a tiered requirement for obtaining coverage based on the size of the vessel and the amount of ballast water carried. Vessels that are 300 gross tons or larger and have the capacity to carry more than eight cubic meters of ballast water must submit notices of intent (“NOIs”("NOIs") to receive permit coverage between six and nine months after the permit’spermit's issuance date. Vessels that do not need to submit NOIs are automatically authorized under the permit.

    In December 2018, the Vessel Incidental Discharge Act ("VIDA") was signed into law and restructured the EPA and the U.S. Coast Guard programs for regulating incidental discharges from vessels. Rather than requiring CWA permits, the discharges will be regulated under a new CWA Section 312(p) establishing Uniform National Standards for Discharges Incidental to Normal Operation of Vessels. Under VIDA, VGP provisions and existing U.S. Coast Guard regulations will be phased out over a period of approximately four years and replaced with National Standards of Performance ("NSPs") to be developed by EPA and implemented and enforced by the U.S. Coast Guard. The scheduled expiration date of the 2013 VGP was December 18, 2018, but under VIDA the provisions of the VGP will remain in place until the new regulations are in place.

    In addition to the requirements in the new VGP (to be replaced by the NSPs established under VIDA), vessel owners and operators must meet 25 sets of state-specific requirements under the CWA’sCWA's § 401 certification process. Because the CWA § 401 process allows tribes and states to impose their own requirements for vessels operating within their waters, vessels operating in multiple jurisdictions could face potentially conflicting conditions specific to each jurisdiction that they travel through.

    While we do not believe that the costs associated with obtainingcomplying with the newly requiredexisting VGP permits and the NSPs that will be promulgated, including meeting related treatment requirements, will be material, it is difficult to predict the overall impact of CWA permitting requirements on our business at this stage. In addition, state-specific requirements under the CWA’sCWA's § 401 and any similar restrictions enacted in the future could increase our costs of operating in the relevant waters.

    NISA        National Invasive Species Act ("NISA").. On    In March 23, 2012, the U.S. Coast Guard issued a final rule establishing standards for the allowable concentration of living organisms in ballast water discharged in U.S. waters and requiring the phase-in of U.S. Coast Guard approved ballast water management systems. The rule went into effect onin June 21, 2012 and adoptsset ballast water discharge standards for vessels calling on U.S. ports and intending to discharge ballast water equivalent to those set in IMO’sIMO's BWM Convention. The final rule requires that ballast water discharge have no more than ten living organisms per milliliter for organisms between ten and 50 micrometers in size. For organisms larger than 50 micrometers, the discharge can have no more than ten living organisms per cubic meter of


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    discharge. New ships constructed on or after December 1, 2013 must comply with these ballast water treatment standards and some existing ships must comply by their first drydock after January 1, 2014. Pursuant to a newly issued policy from September 2015, the U.S. Coast Guard currently will extend this implementation schedule only where compliance has been demonstrated not to be possible.

    Clean Air ActAct..    The United States Clean Air Act requires the EPA to promulgate standards applicable to emissions of volatile organic compounds and other air contaminants. Our vessels are subject to vapor control and recovery requirements for certain cargoes in regulated port areas and emission standards for so-called “Category 3”"Category 3" marine diesel engines operating in U.S. waters. The marine diesel engine emission standards are currently limited to 2004 model year engines and newer and are equivalent to those adopted set forth in the amendments to Annex VI to MARPOL. Compliance with these standards may cause us to incur costs to install control equipment on our vessels in the future. In February 2015, the EPA amended its marine diesel engine requirements to temporarily allow marine equipment manufacturers to use allowances if a compliant marine engine is not available. Compliance with these standards may cause us to incur costs to install control equipment on our vessels in the future.

    Trends in Environmental Regulation in the United StatesStates..    Numerous governmental agencies issue regulations to implement and enforce the laws of the applicable jurisdiction, which often involve lengthy permitting procedures, impose difficult and costly compliance measures, particularly in ecologically sensitive areas, and subject operators to substantial administrative, civil and criminal penalties or may result in injunctive relief for failure to comply. Some of these laws contain criminal sanctions in addition to civil penalties. Changes in environmental laws and regulations occur frequently, and any changes that result in more stringent and costly compliance or limit contract drilling opportunities, including changes in response to a serious marine incident that results in significant oil pollution or otherwise causes significant adverse environmental impact, such as the April 2010 Macondo well blowout incident, could adversely affect our financial results. Although significant capital expenditures may be required to comply with these governmental laws and regulations, such compliance has not materially adversely affected our earnings or competitive position. We believe that we are currently in compliance in all material respects with the environmental regulations to which we are subject.

    We may also be affected by or subject to permitting and other requirements under a variety of other environmental laws not discussed above, such as the Endangered Species Act, Marine Mammal Protection Act and National Environmental Policy Act.

      Greenhouse Gas Regulation

    In February 2005, the Kyoto Protocol to the United Nations Framework Convention on Climate Change (the “Kyoto Protocol”"Kyoto Protocol") entered into force. Pursuant to the Kyoto Protocol, adopting countries are required to implement national programs to reduce emissions of greenhouse gases.gases ("GHGs"). Currently, the emissions of greenhouse gases from international shipping are not subject to the Kyoto Protocol. However, international negotiations are continuing with respect to a successorProtocol or to the Kyoto Protocol and restrictions on shipping emissions may be included in any new treaty.more recently announced Paris Agreement.

    On July 15, 2011, the IMO approved mandatory measures to reduce emissions of greenhouse gases from international shipping. The amendments to Annex VI to MARPOL for the prevention of air pollution from ships add a new Chapter 4 to Annex VI on energy efficiency requiring the Energy Efficiency Design Index (“EEDI”("EEDI") for new ships, and the Ship Energy Efficiency Management Plan (“SEEMP”("SEEMP") for all ships. The regulations apply to all ships of 400 gross tonnage and above and are entered into force on January 1, 2013. These new rules will likely affect the operations of vessels that are registered in countries that are signatories to Annex VI to MARPOL or vessels that call upon ports located within such countries. The implementationIMO also adopted a mandatory data collection system requirement in October 2016 ("IMO DCS") that requires ships of the EEDI5000 gross tonnage and SEEMP standardsabove to record and report their fuel oil consumption, indirectly addressing carbon dioxide emissions data. The requirement was entered into force on March 1, 2018. These requirements could cause us to incur additional compliance costs.

            The IMO is also considering the development of a market-based mechanism for greenhouse gas emissions from ships, but it is impossibleships. At the October 2016 Marine Environmental Protection Committee ("MEPC") session, the IMO adopted a roadmap for developing a comprehensive IMO strategy on reduction of


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    GHG emissions. In April 2018, the MEPC adopted an initial strategy designed to predictreduce the likelihood that suchemission of greenhouse gases from vessels, including short-term, mid-term and long-term candidate measures with a standard might be adopted or its potential impact on our operations at this time.vision of reducing and phasing out greenhouse gas emissions from vessels as soon as possible in the 21st Century. The EU has indicated that it intends to implement regulation in an effort to limit emissions of greenhouse gases from vessels if such emissions are not regulated through the IMO.

    In the United States, the EPA issued an “endangerment finding”"endangerment finding" regarding greenhouse gases under the Clean Air Act. While this finding in itself does not impose any requirements on our industry, it authorizes the EPA to regulate directly greenhouse gas emissions through a rule-making process. The EPA has already been petitioned by the California Attorney General to regulate greenhouse gas emissions from oceangoing vessels. In addition, climate change initiatives have been or are being considered in the United States Congress and by individual states. In June 2013, the European Commission developed a strategy to integrate maritime emissions into the overall European Union strategy to reduce greenhouse gas emissions. In accordance with this strategy, in April 2015 the European Parliament and Council adopted regulations (EU Directive 2015/757 or EU MRV Regulation) requiring large vessels exceeding 5,000 gross tons using European Union ports to monitor, report and verify their carbon dioxide emissions beginning in January 2018.2018, with the first reports due in 2019. In February 2019, the European Commission adopted a proposal to amend the EU MRV Regulation to harmonize the requirements of the EU MRV Regulation and the IMO DCS. Although, at present, the EU MRV Regulation is for monitoring, reporting and verification only, but it is anticipated that in the future the EU may move from requiring reporting of emissions to regulations aimed at reducing them.

    Any passage of climate control legislation or other regulatory initiatives by the IMO, the United States, the EU, Norway, Brazil or other countries where we operate, or any treaty adopted at the international level to succeed the Kyoto Protocol, that restrict emissions of greenhouse gases could have a significant financial and operational impact on our business, including requiring us to make significant financial expenditures that we cannot predict with certainty at this time. For example, the Paris Agreement could lead to increased regulation of greenhouse gases or other concerns relating to climate change. In addition, even without such regulation, our business may be indirectly affected to the extent that climate change results in sea level changes or more intense weather events.

      Vessel Security Regulation

    Since the terrorist attacks of September 11, 2001, there have been a variety of initiatives intended to enhance vessel security. On November 25, 2002, the Maritime Transportation Security Act of 2002 (the “MTSA”"MTSA"), came into effect in the United States. To implement certain portions of the MTSA, in July 2003, the U.S. Coast Guard issued regulations requiring the implementation of certain security requirements aboard vessels operating in waters subject to the jurisdiction of the United States. Similarly, in December 2002, amendments to SOLAS created a new chapter of the convention dealing specifically with maritime security. The new chapter came into effect in July 2004 and imposes various detailed security obligations on vessels and port authorities, most of which are contained in the ISPS. The ISPS is designed to protect ports and international shipping against terrorism. After July 1, 2004, to trade internationally, a vessel must maintain an International Ship Security Certificate (“ISSC”("ISSC") from a recognized security organization approved by the vessel’svessel's flag state.

    Among the various requirements are:

      onboard installation of automatic identification systems to provide a means for the automatic transmission of safety-related information from among similarly equipped ships and shore stations, including information on a ship’sship's identity, position, course, speed and navigational status;



    onboard installation of ship security alert systems, which do not sound on the vessel but only alert the authorities on shore;

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      the development of vessel security plans;



    a ship identification number to be permanently marked on a vessel’svessel's hull;



    a continuous synopsis record kept onboard showing a vessel’svessel's history, including the name of the ship and of the state whose flag the ship is entitled to fly, the date on which the ship was registered with that state, the ship’sship's identification number, the port at which the ship is registered and the name of the registered owner(s) and their registered address; and



    compliance with flag state security certification requirements.

    The U.S. Coast Guard regulations, intended to align with international maritime security standards, exempt non-U.S. vessels from the MTSA vessel security measures provided such vessels have onboard a valid ISSC that attests to the vessel’svessel's compliance with SOLAS security requirements and the ISPS. KNOT has implemented the various security measures addressed by the MTSA, SOLAS and the ISPS.

    Legal Proceedings

    From time to time we have been, and expect to continue to be, subject to legal proceedings and claims in the ordinary course of our business, principally personal injury and property casualty claims. These claims, even if lacking merit, could result in the expenditure of significant financial and managerial resources. We are not aware of any legal proceedings or claims that we believe will have, individually or in the aggregate, a material adverse effect on us.

    Taxation of the Partnership

    Certain of our subsidiaries are subject to taxation in the jurisdictions in which they are organized, conduct business or own assets. We intend that our business and the business of our subsidiaries will be conducted and operated in a manner designed to minimize the tax imposed on us and our subsidiaries. However, we cannot assure this result as tax laws in these or other jurisdictions may change or we may enter into new business transactions relating to such jurisdictions, which could affect our tax liability.

      Marshall Islands

    Because we and our subsidiaries do not conduct business or operations in the Republic of the Marshall Islands, neither we nor our subsidiaries are subject to income, capital gains, profits or other taxation under current Marshall Islands law, and we do not expect thisother than taxes, fines or fees due to change(i) the incorporation, dissolution, continued existence, merger, domestication (or similar concepts) of legal entities registered in the future.Republic of the Marshall Islands, (ii) filing certificates (such as certificates of incumbency, merger, or redomiciliation) with the Marshall Islands registrar, (iii) obtaining certificates of good standing from, or certified copies of documents filed with, the Marshall Islands registrar, (iv) compliance with Marshall Islands law concerning vessel ownership, such as tonnage tax, or (v) non-compliance with requests made by the Marshall Islands Registrar of Corporations relating to our books and records and the books and records of our subsidiaries. As a result, distributions KNOT UK receives from its subsidiary, distributions that such subsidiary receives from the operating subsidiaries, and distributions we receive from KNOT UK, are not expected to be subject to Marshall Islands taxation.

      United States

    We have elected to be treated as a corporation for U.S. federal income tax purposes. As a result, we are subject to U.S. federal income tax to the extent we earn income from U.S. sources or income that is treated as effectively connected with the conduct of a trade or business in the United States unless such income is exempt from tax under an applicable treaty or Section 883 of the Code. Because


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    our fleet is owned by subsidiaries resident in Norway, we expect that we qualify for an exemption from U.S. federal income tax on any U.S. source gross transportation income we earn by virtue of the application of the U.S.-Norway Tax Treaty, and we intend to take this position for U.S. federal income tax purposes.

      Norway

    We are treated as fiscally transparent for Norwegian tax purposes and expect to organize our affairs and conduct our business in a manner such that we, and our remaining subsidiaries that are not organized under the laws of the Kingdom of Norway, are not subject to a material amount of Norwegian taxes.

    Our vessel-owning subsidiaries have been organized under the laws of the Kingdom of Norway, and we have elected to be subject to the tonnage tax regime in Norway. Pursuant to this regime, our vessel-owning subsidiaries will be subject to Norwegian tax based upon the net tonnage of their available cargo space rather than income generated from operating the vessels (i.e., operating income), which is tax free. Based upon the cargo space of our current vessels and the applicable rate of taxation, we expect our Norwegian subsidiaries to be liable for approximately $137,000$250,000 of Norwegian tonnage tax for the year ended December 31, 2016.2018. In addition, under the tonnage tax regime, other income such as net financial income and expense (i.e. income not generated from operating the vessels) is subject to the regular corporate income tax rate.

            On December 14, 2017, the Norwegian government concluded negotiations with the EFTA Surveillance Authority regarding the Norwegian tonnage tax regime, which has been approved for another ten years until 2027. Pursuant to the approval, Norway has introduced restrictions that eliminate the ability of companies that own vessels under certain bareboat charters to qualify for the Norwegian tonnage tax regime. Companies that no longer qualify for the Norwegian tonnage tax regime will instead be subject to Norwegian corporate income tax. However, there are no limitations on intra-group bareboat chartering, as well as bareboat charters where crewing services are carried out by a related party. In order to constitute a related party, a minimum of 25% ownership/control is required according to the Norwegian General Taxation Act Section 8-13, paragraph 6. Due to the fact that KNOT owns more than 25% of our partnership interests and owns 100% of KNOT Management and KNOT Management Denmark (which provide these crewing services to us), our bareboat charters are effectively seen as time charter services to the customer. If this related party situation is ended, other alternatives and possibly mitigating measures would need to be evaluated by the Partnership. If there is a Brexit some of the existing UK flagged vessels will be reflagged to EU/EEA flag in order to meet any future national flag requirements.

            In case of a UK Brexit, dividend payments from KNOT Shuttle Tankers AS to KNOT UK will not be subject to withholding tax in Norway since KNOT UK owns more than 10% of the capital in KNOT Shuttle Tankers AS, c.f. the double tax treaty between Norway and the UK, article 10, paragraph 2.

      United Kingdom

    Although we are managed and controlled in the United Kingdom, we have obtained confirmation from HM Revenue & Customs that we are treated as a transparent partnership for United Kingdom tax purposes. Accordingly, we are not subject to UK tax in our own name, but rather any partners subject to UK tax will be taxed on their share of our profits.

    Our general partner and KNOT UK expect to be a resident of the United Kingdom for taxation purposes subject to tax on ordinary income. Nonetheless, these companies are primarily expected to earn dividend income from our controlled affiliates, which should generally be exempt from United Kingdom taxation under applicable exemptions for distributions from subsidiaries.


    EmployeesTable of Contents

    Employees

    We directly employ one onshore employee and no seagoing employees. As of December 31, 2015,2018, KNOT employed (directly and through ship managers) approximately 248502 seagoing staff to serve on our vessels. KNOT and its affiliates may employ additional seagoing staff to assist us as we grow. KNOT, through certain of its subsidiaries, provides onshore advisory, commercial, technical and operational support to our operating subsidiaries pursuant to the technical management agreements and management and administration agreements. Please read “Item"Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions.

    "

    We and KNOT regard attracting and retaining motivated seagoing personnel as a top priority. KNOT offers seafarers competitive employment packages and opportunities for personal and career development, which relates to a philosophy of promoting internally. The officers operating our vessels are engaged on individual employment contracts, and we have entered into collective bargaining agreements that cover substantially all of the sailing personnel that operate the vessels in our current fleet, which are flagged in Norway, the Isle of Man, Malta, Denmark, United Kingdom or the Bahamas. We believe our relationships with these labor unions are good. Our commitment to training is fundamental to the development of the highest caliber of seafarers for our marine operations. KNOT’sKNOT's cadet training approach is designed to balance academic learning with hands-on training at sea. KNOT trains personnel mainly in Norway and the Philippines and at institutions that utilize ship handling, dynamic positioning and cargo handling simulators. After receiving formal instruction at one of these institutions, our seafarers’seafarers' training continues onboard one of KNOT’sKNOT's vessels. Additional vessel and equipment training and courses are arranged in accordance with our training policies and the training requirements of our charterers. We believe that high-quality crewing and training policies will play an increasingly important role in distinguishing the larger, independent shipping companies with shuttle tanker experience from those that are newcomers and lack experienced, in-house staff and established expertise on which to base their customer service and safety operations.

      C.Organizational Structure

    We are a publicly traded limited partnership formed on February 21, 2013.


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    The diagram below depicts our simplified organizational and ownership structure as of March 18, 2016.

    April 10, 2019.

    LOGOGRAPHIC


    (1)
    Each of our vessels are owned by certain vessel-owning subsidiaries.

            

    (1)Each of our vessels are owned by certain vessel-owning subsidiaries.

    We listed our common units on the New York Stock Exchange (“NYSE”("NYSE") in April 2013 under the ticker symbol “KNOP.”"KNOP."

    We were formed under the law of the Marshall Islands and maintain our principal executive headquarters at 2 Queen’sQueen's Cross, Aberdeen, Aberdeenshire, AB15 4YB, United Kingdom. Our telephone number at that address is +44 (0) 1224 618420. Our principal administrative offices are located at 2 Queen’sQueen's Cross, Aberdeen, Aberdeenshire, AB15 4YB, United Kingdom.

    A full list of our significant operating and vessel-owning subsidiaries is included in Exhibit 8.1.


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    D.Property, Plants and Equipment

    Other than the vessels in our current fleet, we do not have any material property.

    Item 4A.Unresolved Staff Comments

    Not applicable.

    Item 5.Operating and Financial Review and Prospects

    The following should be read in conjunction with ���Item"Item 3. Key Information—Selected Financial Data,” “Item" "Item 4. Information on the Partnership”Partnership," "Forward-Looking Statements" and the consolidated and combined carve-out financial statements and accompanying notes included in this Annual Report. Among other things, those financial statements include more detailed information regarding the basis of presentation for the following information. Our financial statements have been prepared in accordance with accounting principles generally accepted in the United States ("U.S. GAAPGAAP") and are presented in U.S. Dollars.

    The following discussion assumes that our business was operated as a separate entity prior to the closing of our IPO on April 15, 2013.        References in this Annual Report to our “initial fleet”"initial fleet" refer to theFortaleza Knutsen, theRecife Knutsen, theWindsor Knutsen and theBodil Knutsen, all of which were contributed to us at or prior to our IPO. The historical financial statements for periods prior to the closing of our IPO on April 15, 2013 which are discussed below, have been carved out of the consolidated financial statements of KNOT, which operated the vessels in our initial fleet for periods prior to our IPO.

    Our financial position, results of operations and cash flows reflected in our financial statements include all expenses allocable to our business, but may not be indicative of those that would have been achieved had we operated as a separate public entity for all periods presented or of future results.

    In August 2013, we acquired KNOT’sKNOT's 100% interest in the company that owns and operates the shuttle tanker, theCarmen Knutsen.

    In June 2014, we acquired KNOT’sKNOT's 100% interest in the companies that own and operate the shuttle tankers, theHilda Knutsenand theTorill Knutsen.

    In December 2014, we acquired KNOT’sKNOT's 100% interest in the company that owns and operates the shuttle tanker, theDan Cisne.

    In June 2015, we acquired KNOT’sKNOT's 100% interest in the company that owns and operates the shuttle tanker, theDan Sabia.

    In October 2015, we acquired KNOT’sKNOT's 100% interest in the company that owns and operates the shuttle tanker, theIngrid Knutsen.

    Overview        In December 2016, we acquired KNOT's 100% interest in the company that owns and operates the shuttle tanker, theRaquel Knutsen.

            In March 2017, we acquired KNOT's 100% interest in the company that owns and operates the shuttle tanker, theTordis Knutsen.

            In June 2017, we acquired KNOT's 100% interest in the company that owns and operates the shuttle tanker, theVigdis Knutsen.

            In September 2017, we acquired KNOT's 100% interest in the company that owns and operates the shuttle tanker, theLena Knutsen.

            In December 2017, we acquired KNOT's 100% interest in the company that owns and operates the shuttle tanker, theBrasil Knutsen.

            In March 2018, we acquired KNOT's 100% interest in the company that owns and operates the shuttle tanker, theAnna Knutsen.

    Overview

    We were formed in February 2013 as a limited partnership under the laws of the Republic of the Marshall Islands to own and operate shuttle tankers under long-term charters. Our initial fleet of shuttle tankers was contributed to us by KNOT, a leading independent owner and operator of shuttle


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    tankers. Our current fleet consists of tensixteen shuttle tankers. Under the Omnibus Agreement, we have the option to purchase theRaquel Knutsen from KNOT at any time within 24 months after KNOT notifies our board of directors of its acceptance by its charterer. Pursuant to the Omnibus Agreement, we also have the right to purchase from KNOT any shuttle tankers operating under charters of five or more years.

    On April 18, 2013, we completed our IPO. In connection with our IPO, we sold 8,567,500 common units to the public, through the underwriters, at a price of $21.00 per unit, and issued to KNOT 8,567,500 subordinated units and all of our incentive distribution rights. On May 18, 2016, all of the subordinated units converted into common units on a one for one basis. As of March 18, 2016,April 10, 2019, KNOT owned 26.2% of our common units, our general partner and our incentive distribution rights and our general partner owned a 31.2% limited1.85% general partner interest in us and through its ownership0.3% of our general partner, a 2.01% general partner interest in us, as well as our incentive distribution rights.common units.

    Significant Developments in 20152018

      Equity offeringTorill Facility

    On June 2, 2015, we sold 5,000,000 common units, representing limited partner interests,January 30, 2018, the Partnership's subsidiary, Knutsen Shuttle Tankers 15 AS, which owns the vesselTorill Knutsen, closed a new $100 million senior secured term loan facility with a consortium of banks, in an underwritten public offeringwhich The Bank of Tokyo-Mitsubishi UFJ acted as agent (the “June 2015 Offering”"Torill Facility"). In connectionThe Torill Facility refinanced a $117 million loan facility associated with the June 2015 Offering, the general partner contributedTorill Knutsen that bore interest at a totalrate of $2.4LIBOR plus a margin of 2.5% and was due to be paid in full in November 2018. The Torill Facility is repayable in twenty-four (24) consecutive quarterly installments with a balloon payment of $60.0 million due at maturity. The Torill Facility bears interest at a rate per annum equal to LIBOR plus a margin of 2.1%. The facility matures in order to maintain its 2% general partner interest in the Partnership. The Partnership’s total net proceeds for the June 2015 Offering and the related general partner contribution were $116.6 million. For more information, please read Note 23—Equity Offerings in the consolidated and combined carve-out financial statements included in this Annual Report.January 2024.

      We used the net proceeds from the June 2015 Offering and related capital contribution by our general partner to fund the cash portion of the purchase price ofAnna Knutsen Acquisition

            On March 1, 2018, KNOT Shuttle Tankers AS acquired KNOT Shuttle Tankers 30 AS ("KNOT 30"), the company that owns and operates theDan Sabia, to repay indebtedness and for general partnership purposes.

    Acquisitions

    On June 15, 2015, we completed the acquisition of the ownership interests in the company that owns and operates the shuttle tankerDan SabiaAnna Knutsenfrom KNOT, for a considerationpurchase price of $103.0$120.0 million, less approximately $64.5$106.8 million of outstanding indebtedness related to the vesselAnna Knutsen plus approximately $1.4 million for certain capitalized fees related to the financing of theAnna Knutsen and plus other purchase price adjustments of $2.7$5.3 million. For more information, please read Note 22—Business Acquisitions inOn the consolidated and combined carve-out financial statements included in this Annual Report. The cash portionclosing of the purchase price was financed with the proceeds from the June 2015 Offering. TheDan Sabia is operating in Brazil under a 12-year bareboat charter with Transpetro. The charter commenced upon delivery of theDan Sabia in January 2012 and will terminate in 2024.

    On October 15, 2015, we completed the acquisition, KNOT 30 repaid approximately $32.3 million of the ownership interests in the company that owns and operates the shuttle tankerIngrid Knutsenfrom KNOT for considerationindebtedness, leaving an aggregate of $115.0 million, net of $104.5approximately $74.4 million of debt outstanding indebtednessunder the secured credit facility related to the vessel. The purchase price was subsequently adjustedsettled in cash.

      Extension and Suspension of Windsor Knutsen Charter

            On July 13, 2018, Shell exercised its option to extend the time charter of theWindsor Knutsen by a working capital adjustment of $2.4 million. The cash portionone additional year until October 2019. Following the exercise of the purchase price was financed with cash on hand. TheIngrid Knutsen is operating in the North Sea under a 10-year time charter with ExxonMobil, which will expire in the first quarter of 2024. The chartereroption, Shell has four one-year options to extend the time charter.

            On December 17, 2018, the Partnership's subsidiary that owns theWindsor Knutsen and Shell agreed to suspend the vessel's time charter contract for a minimum of 10 months and a maximum of 12 months. The suspension period commenced March 4, 2019. During the suspension period, theWindsor Knutsen will operate under a time charter contract with Knutsen Shuttle Tankers Pool AS, a wholly owned subsidiary of KNOT, on the same terms as the existing time charter contract with Shell. The Partnership agreed to the suspension of the contract with Shell and the substitute time charter in order to accommodate the mutual needs of Shell and Knutsen Shuttle Tankers Pool AS.

      Extension of Hilda Knutsen Charter

            On August 3, 2018, the Partnership entered into an amended time charter with Eni, extending the duration of theHilda Knutsen time charter for five one-year periods.four years until August 2022, with options to extend until 2025.


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      Common Unit Purchase ProgramExtension of Torill Knutsen Charter

    In August, 2015,        On September 5, 2018, Eni, exercised its option to extend the Partnership’s boardtime charter of directors authorized a program fortheTorill Knutsen by one additional year until November 2019. Following the Partnership to repurchase up to 666,667 of its common units. The board of directors of our general partner concurrently authorized our general partner to purchase up to 333,333 common unitsexercise of the Partnership. Asoption, Eni has four one-year options to extend the time charter.

      Multi-vessels Refinancing

            On September 20, 2018 the Partnership's subsidiaries which own theWindsor Knutsen, theBodil Knutsen, theFortaleza Knutsen, theRecife Knutsen, theCarmen Knutsen and theIngrid Knutsen (the "Vessels"), refinanced their existing bank debt, entering new long-term senior secured credit facilities (the "Multi-vessels Facility"). The new senior secured credit facilities consist of both December 31, 2015a term loan of $320 million and March 18, 2016,a $55 million revolving credit facility.

            The term loan is repayable in 20 consecutive quarterly installments, with a balloon payment of $177 million due at maturity in September 2023. The term loan bears interest at a rate per annum equal to LIBOR plus a margin of 2.125%. The revolving credit facility will mature in September 2023, and bears interest at LIBOR plus a margin of 2.125%. There is a commitment fee of 0.85% payable on the undrawn portion of the revolving credit facility. The loans are guaranteed by the Partnership and our general partner had purchased 180,906secured by mortgages on the Vessels. The Multi-vessels Facility refinanced previously existing term loans and 90,368 common units, respectively, at an average purchase price of $12.71 per unit.

    Changes in Board and Management

    In May 2015, John Costain resigned from our board of directors and on June 1, 2015, Mr. Costain became our Chief Executive Officer and Chief Financial Officer. Simon Bird was appointeda revolving credit facility previously secured by the remaining elected directorsVessels.

      Extension of Bodil Knutsen Charter

            On November 9, 2018, Equinor ASA exercised its option to replace Mr. Costain asextend the Class III elected director to servetime charter of theBodil Knutsen by one additional year until May 2020. Following the annual meeting of unitholders in 2016.

    In May 2015, Mr. Edward Waryas was appointed chairmanexercise of the conflicts committee and Mr. Hans Petter Aas was appointed as a member ofoption, Equinor has four one-year options to extend the conflicts committee. Mr. Aas was also appointed chairman of the audit committee and Mr. Waryas was appointed as a new member of the audit committee in addition to the existing member, Mr. Andrew Beveridge.time charter.

    Our Charters

    We generate revenues by charging customers for the transportation of their crude oil using our vessels. These services are provided under the following basic types of contractual relationships:

      Time charters, whereby the vessels that we operate and are responsible for the crewing of are chartered to customers for a fixed period of time at hire rates that are either fixed for the firm period of the time charter with escalations to be made in case of option periods or that increase annually based on a fixed percentage increase or fixed schedule in order to enable us to offset expected increases in operating costs. Under our time charters, hire rate payments may be reduced if the vessel does not perform to certain of its specifications, such as if the average vessel speed falls below a guaranteed speed or the amount of fuel consumed to power the vessel under normal circumstances exceeds a guaranteed amount, and the customer is generally responsible for any voyage expenses incurred; and

      Bareboat charters, whereby customers charter our vessels for a fixed period of time at hire rates that are generally fixed, but the customers are responsible for the vessel operation and bear the operating and voyage expenses, including crewing and other operational services.

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    Time charters, whereby the vessels that we operate and are responsible for the crewing of are chartered to customers for a fixed period of time at hire rates that are either fixed for the firm period of the time charter with escalations to be made in case of option periods or that increase annually based on a fixed percentage increase or fixed schedule in order to enable us to offset expected increases in operating costs. Under our time charters, hire rate payments may be reduced if the vessel does not perform to certain of its specifications, such as if the average vessel speed falls below a guaranteed speed or the amount of fuel consumed to power the vessel under normal circumstances exceeds a guaranteed amount, and the customer is generally responsible for any voyage expenses incurred; and

    Bareboat charters, whereby customers charter our vessels for a fixed period of time at hire rates that are generally fixed, but the customers are responsible for the vessel operation and bear the operating and voyage expenses, including crewing and other operational services.

    The table below compares the primary features of a time charter and a bareboat charter:


    Time Charter

    Bareboat Charter
    Typical charter length One year or more One year or more
    Hire rate basis(1) Daily Daily
    Voyage expenses(2) Customer pays Customer pays
    Vessel operating expenses(2) Owner pays Customer pays
    Off-hire(3) Varies Customer typically pays

    (1)
    "Hire rate" refers to the basic payment from the charterer for the use of the vessel.

    (2)
    Defined below under "—Important Financial and Operational Terms and Concepts."

    (3)
    "Off-hire" refers to the time a vessel is not available for service. Our time charters contain provisions whereby the customer is generally not required to pay the hire rate during off-hire. Our bareboat charters do not contain such provisions.

      (1)“Hire rate” refers to the basic payment from the charterer for the use of the vessel.
      (2)Defined below under “—Important Financial and Operational Terms and Concepts.”
      (3)“Off-hire” refers to the time a vessel is not available for service. Our time charters contain provisions whereby the customer is generally not required to pay the hire rate during off-hire. Our bareboat charters do not contain such provisions.

      Employment of Our Fleet

    The following table describes the operations of the vessels in our fleet.

    Vessel

    Description of Historical Operations

    Fortaleza Knutsen Delivered in March 2011. Has operated under a long-term bareboat charter with a subsidiary of Transpetro since delivery. Included in the Partnership’sPartnership's initial fleet.

    Recife Knutsen

     

    Delivered in August 2011. Has operated under a long-term bareboat charter with a subsidiary of Transpetro since delivery. Included in the Partnership’sPartnership's initial fleet.

    Bodil Knutsen

     

    Delivered in February 2011. Completed an interim spot voyage and testing prior to commencing operations under a long-term time charter with Statoil (now Equinor) in May 2011. Included in the Partnership’sPartnership's initial fleet.

    Windsor Knutsen

     

    Delivered in May 2007. Operated as a conventional oil tanker under short-term time charters and in the spot market from its delivery until commencement of retrofitting in November 2010. Following completion of its retrofitting as a shuttle tanker, operated under a long-term time charter with BG Groupa subsidiary of Shell from April 2011 until July 2014. From July 2014 operated under a charter with KNOT until the vessel commenced on a long term time charter with BG Groupa subsidiary of Shell in October 2015. In March 2019, began operating under a charter with Knutsen Shuttle Tankers Pool AS.

    Carmen Knutsen

     

    Delivered in January 2013. Has operated under a long-term time charter with a subsidiary of Repsol since delivery. Acquired by the Partnership in August 2013.

    Hilda Knutsen

     

    Delivered in August 2013. Has operated under a long-term time charter with ENI, which commenced on delivery. Acquired by the Partnership in June 2014.

    Torill Knutsen

     

    Delivered in November 2013. Has operated under a long-term time charter with ENI, which commenced on delivery. Acquired by the Partnership in June 2014.

    Dan Cisne

     

    Delivered in September 2011. Has operated under a long-term bareboat charter with a subsidiary of Transpetro, which commenced on delivery. Acquired by the Partnership in December 2014.

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    Vessel
    Description of Historical Operations
    Dan Sabia Delivered in January 2012. Has operated under a long-term bareboat charter with a subsidiary of Transpetro, which commenced on delivery. Acquired by the Partnership in June 2015.

    Ingrid Knutsen

     

    Delivered in December 2013 and commenced on long-term time charter with Standard Marine Tonsberg, a subsidiary of ExxonMobil in February 2014. Acquired by the Partnership in October 2015.

    Raquel Knutsen


    Delivered in March 2015 and commenced on long-term time charter with Repsol in June 2015. Acquired by the Partnership in December 2016.

    Tordis Knutsen


    Delivered in November 2016 and commenced on long term time charter with a subsidiary of Shell in January 2017. Acquired by the Partnership in March 2017.

    Vigdis Knutsen


    Delivered in February 2017 and commenced on long-term time charter with a subsidiary of Shell in April 2017. Acquired by the Partnership in June 2017.

    Lena Knutsen


    Delivered in June 2017 and commenced on long term time charter with a subsidiary of Shell in September 2017. Acquired by the Partnership in September 2017.

    Brasil Knutsen


    Delivered in May 2013 and commenced on long-term time charter with Galp in June 2015. Acquired by the Partnership in December 2017.

    Anna Knutsen


    Delivered in March 2017 and commenced on long term time charter with Galp in May 2017. Acquired by the Partnership in March 2018.

    Market Overview and Trends

    As of February 2016,April 2019, the shuttle tanker market consisted of approximately 8088 vessels and was(including 15 newbuilds on order) characterized by long-term charters with offshore oil producers. Most shuttle tankers areoperate in the North Sea andor offshore Brazil. Demand for shuttle tankers is based on offshore oilfield development and upprior to mid-2014, higher oil prices and a positive long-term offshore oil outlook led to increased activity. However, forIn the past twofour years, oil companies have experienced delays indelayed oil production start-upstart-ups in both in the North Sea and Brazil. This has led to a temporary overcapacity, however we have noted thatProject startups are increasing, and the delaying effectexisting fleet is reducing and as there is no speculative ordering, the market is coming close to being balanced. While this has led to reduced activity for vessels without fixed charters, we believe vessels on fixed charters have not been affected.aging. Due to the age structure of the fleet the lack of speculative contracting and the relatively high number of projects under development, we believe the medium to long-term outlook continues to be positive and tendering activity for new projects is expected in 2016.2019. For 2015, one2018, two new shuttle tanker contract was awardedtankers were ordered to Brazilian operations and three shuttle contractsoperate in the North Sea. In addition, there were awarded for Canadian operations. There were no7 new shuttle tanker contracts awarded for the North SeaBrazilian operations during 2015.

    2018

    Oil prices declined significantly in the latter part of 2014 and in 2015 due to a range of factors, notably thean increase in US shale oil production, coupled with increased production from certain OPEC statesstates. Oil prices recovered to a certain degree in 2016 and a slowdown in demand from Europethis continued throughout 2017 and Asia. Due to the fact that there are a number of existing2018. Existing offshore oil production projects already under development where shuttle tankers are required, are unaffected by the declinevolatility in oil prices. Longer term reductions in oil prices is not expected to materially affectcould impact the shuttle tanker market for the next two to three years. However, longer term oil prices will determine the impact on therate of growth of offshore oil production activity when existing projects and projects under development are completed.


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    Items You Should Consider When Evaluating Our Historical Financial Performance and Assessing Our Future Prospects

    You should consider the following facts when evaluating our historical results of operations and assessing our future prospects:

      The size of our fleet continues to change.  Our historical results of operations reflect changes in the size and composition of our fleet due to our acquisitions of theCarmen Knutsen, theHilda Knutsen, theTorill Knutsen, theDan Cisne, theDan Sabia, theIngrid Knutsen, theRaquel Knutsen, theTordis Knutsen, theVigdis Knutsen, theLena Knutsen, theBrasil Knutsen and theAnna Knutsen.

      We may enter into different financing agreements.  Our financing agreements currently in place may not be representative of the agreements we will enter into in the future. For example, we may amend our existing credit facilities or enter into new financing agreements. For descriptions of our current financing agreements, please read "Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities."

      Our results are affected by fluctuations in the fair value of our derivative instruments.  The change in fair value of our derivative instruments is included in our net income as our derivative instruments are not designated as hedges for accounting purposes. These changes may fluctuate significantly as interest rates fluctuate. Please read Note 10—Derivative Instruments in the consolidated financial statements included in this Annual Report. The unrealized gain or losses related to the change in fair value of our derivatives do not impact our cash flows.

      Our historical results of operations are affected by fluctuations in currency exchange rates. All of the vessels in our fleet are on time charters and bareboat charters with hire rates payable in U.S. Dollars. Approximately 51%, 42% and 47% of the vessel operating expenses related to our vessels operating under time charters are denominated in U.S. Dollars and approximately 27%, 30% and 42% of such vessel operating expenses are denominated in Norwegian Kroner ("NOK"), for the years ended December 31, 2018, 2017 and 2016, respectively. The composition of our vessel operating expenses may vary over time depending upon the location of future charters and/or the composition of our crews. All of our financing and interest expenses are also denominated in U.S. Dollars. We anticipate that all of our future financing agreements will also be denominated in U.S. Dollars.

      We are subject to a one-time entrance tax into the Norwegian tonnage tax regime.  Our Norwegian subsidiaries are subject to a one-time entrance tax into the tonnage tax regime due to our acquisition in 2013 of the shares in the subsidiary that owns theFortaleza Knutsen and theRecife Knutsen. The entrance tax arises when the related party seller is taxed under the ordinary tax regime, and the buyer is taxed under the tonnage tax regime. The tax is based on the difference between the market value of the shares and the seller's tax value of the shares as of the date of contribution. The entrance tax on this gain is payable over several years and is calculated by multiplying the Norwegian tax rate by the declining balance of the gain, which will decline by 20% each year. The Norwegian corporate tax rate has been reduced from 25% in 2016 to 24% in 2017 and 23% in 2018.

      Our historical results of operations reflect income taxes for part of the activities under the ordinary tax regime in Norway. Our Norwegian subsidiaries are subject only to Norwegian tonnage tax rather than a combination of ordinary taxation and tonnage taxation as reflected in the consolidated financial statements and accompanying notes included in this Annual Report. Under the tonnage tax regime, the tonnage tax is based on the tonnage of the vessel, and operating income is tax free. Tonnage tax is calculated based on the vessel's net tonnage (in thousands), according to its certificate, multiplied by the days in operation and the applicable dayrate. The net financial

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    The size of our fleet continues to change. Our historical results of operations reflect changes in the size and composition of our fleet due to our acquisitions of theCarmen Knutsen, theHilda Knutsen, theTorill Knutsen, theDan Cisne, theDan Sabia and theIngrid Knutsen.

        income and expense remains taxable as ordinary income tax at the regular corporate income tax rate of 23% for Norwegian subsidiaries subject to the tonnage tax regime.

        We may enter into different financing agreements.Our financing agreements currently in place may not be representative of the agreements we will enter into in the future. For example, we may amend our existing credit facilities or enter into new financing agreements. For descriptions of our current financing agreements, please read “Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities.”

    Our results are affected by fluctuations in the fair value of our derivative instruments.The change in fair value of our derivative instruments is included in our net income as our derivative instruments are not designated as hedges for accounting purposes. These changes may fluctuate significantly as interest rates fluctuate. Please read Note 10—Derivative Instruments in the consolidated and combined carve-out financial statements included in this Annual Report. The unrealized gain or losses related to the change in fair value of our derivatives do not impact our cash flows.

    Our historical results of operations are affected by fluctuations in currency exchange rates. All of the vessels in our fleet are on time charters and bareboat charters with hire rates payable in U.S. Dollars. Approximately 45%, 43% and 34% of the vessel operating expenses related to our vessels operating under time charters are denominated in U.S. Dollars and approximately 45%, 47% and 56% of such vessel operating expenses are denominated in Norwegian Kroner (“NOK”), for the years ended December 31, 2015, 2014 and 2013, respectively. The composition of our vessel operating expenses may vary over time depending upon the location of future charters and/or the composition of our crews. All of our financing and interest expenses are also denominated in U.S. Dollars. We anticipate that all of our future financing agreements will also be denominated in U.S. Dollars.

    Our historical results of operations prior to our IPO reflect allocated administrative costs that may not be indicative of future administrative costs. The administrative costs included in our historical results of operations for periods prior to our IPO in April 2013 have been determined by allocating certain of KNOT’s administrative costs, after deducting costs directly charged to KNOT’s subsidiaries for services provided by the administrative staff and shareholder costs, to us principally based on the size of our fleet in relation to the size of KNOT’s fleet. In connection with the closing of our IPO, we entered into an administrative services agreement with KNOT UK, pursuant to which KNOT UK provides us with certain administrative services. KNOT UK is permitted to subcontract certain of the administrative services provided under this agreement to KOAS UK, KOAS and KNOT Management. We reimburse KNOT UK, and KNOT UK reimburses KOAS UK, KOAS and KNOT Management, as applicable, for their reasonable costs and expenses incurred in connection with the provision of the services subcontracted to KOAS UK, KOAS and KNOT Management under the administrative services agreement. In addition, KNOT UK pays to KOAS UK, KOAS and KNOT Management, as applicable, a service fee in U.S. Dollars equal to 5% of the costs and expenses incurred in connection with providing services.

    We are subject to a one-time entrance tax into the Norwegian tonnage tax regime. Our Norwegian subsidiaries are subject to a one-time entrance tax into the tonnage tax regime due to our acquisition in 2013 of the shares in the subsidiary that owns theFortaleza Knutsen and theRecife Knutsen. The entrance tax arises when the related party seller is taxed under the ordinary tax regime, and the buyer is taxed under the tonnage tax regime. The tax is based on the difference between the market value of the shares and the seller’s tax value of the shares as of the date of contribution. The entrance tax on this gain is payable over several years and is calculated by multiplying the Norwegian tax rate by the declining balance of the gain, which will decline by 20% each year. The Norwegian corporate tax rate has been reduced from 28% in 2013 to 27% for 2014 and 2015.

    Our historical results of operations reflect income taxes for part of the activities under the ordinary tax regime in Norway. Our Norwegian subsidiaries are subject only to Norwegian tonnage tax rather than a combination of ordinary taxation and tonnage taxation as reflected in the consolidated and combined carve-out financial statements and accompanying notes included in this Annual Report. Under the tonnage tax regime, the tonnage tax is based on the tonnage of the vessel, and operating income is tax free. Tonnage tax is calculated based on the vessel’s net tonnage (in thousands), according to its certificate, multiplied by the days in operation and the applicable dayrate. The net financial income and expense remains taxable as ordinary income tax at the regular corporate income tax rate of 27% for Norwegian subsidiaries subject to the tonnage tax regime.

    Factors Affecting Our Results of Operations

    We believe the principal factors that will affect our future results of operations include:

      our ability to successfully employ our vessels at economically attractive hire rates as long-term charters expire or are otherwise terminated;



    our ability to maintain good relationships with our existing customers and to increase the number of customer relationships;



    whether our customers, exercise their options to extend their time charters;

    the number and availability of our vessels, including our ability to exercise the option to purchase theRaquel Knutsen;



    the number and availability of our vessels;

    the level of demand for shuttle tanker services;



    the hire rate earned by our vessels, unscheduled off-hire days and the level of our vessel operating expenses;



    the effective and efficient technical management of our vessels;



    our ability to obtain and maintain major oil and gas company approvals and to satisfy their technical, health, safety and compliance standards;



    economic, regulatory, political and governmental conditions that affect the offshore marine transportation industry;



    interest rate changes;



    mark-to-market changes in interest rate swap contracts and foreign currency derivatives, if any;



    foreign currency exchange gains and losses;



    our access to capital required to acquire additional vessels and/or to implement our business strategy;



    increases in crewing and insurance costs;



    the level of debt and the related interest expense; and



    the level of any distribution on our common units.

    Please read “Item"Item 3. Key Information—Risk Factors”Factors" for a discussion of certain risks inherent in our business.

    Important Financial and Operational Terms and Concepts

    We use a variety of financial and operational terms and concepts when analyzing our performance. These include the following:

    Time Charter and Bareboat Revenues.    Revenues from time charters and bareboat charters are recognized as operating leases on a straight-line basis over the term of the charter, net of any commissions. Under time charters, revenue is not recognized during days a vessel is off-hire. Revenue is recognized from delivery of the vessel to the charterer until the end of the lease term. Under time charters, we are responsible for providing the crewing and other services related to the vessel’svessel's operation, the cost of which is included in the daily hire rate, except when off-hire. Under bareboat charters, we provide a specified vessel for a fixed period of time at a specified hire rate. Revenues are


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    affected by hire rates and the number of days a vessel operates as well as the mix of business between time charters and bareboat charters.

    Voyage Expenses.    Voyage expenses are all expenses unique to a particular voyage, including any bunker fuel expenses, port fees, cargo loading and unloading expenses, canal tolls and agency fees. Voyage expenses are typically paid by the customer under time charters and bareboat charters. Voyage expenses are paid by the shipowner during spot contracts and periods of off-hire and are recognized when incurred.

    Vessel Operating Expenses.    Vessel operating expenses include crewing, repairs and maintenance, insurance, stores, lube oil and communication expenses. Vessel operating expenses are generally paid by the shipowner under time charters and spot contracts and are recognized when incurred. Vessel operating expenses are paid by the customer under bareboat charters.

    Off-hire.Under our time charters, when the vessel is off-hire, or not available for service, the customer generally is not required to pay the hire rate, and the shipowner is responsible for all costs. Prolonged off-hire may lead to a termination of the time charter. A vessel generally will be deemed off-hire if there is a loss of time due to, among other things, operational deficiencies, drydocking for repairs, maintenance or inspection, equipment breakdowns, delays due to accidents, crewing strikes, certain vessel detentions or similar problems or the shipowner’sshipowner's failure to maintain the vessel in compliance with its specifications and contractual standards or to provide the required crew. Our bareboat charters do not contain provisions for off-hire. We have obtained loss of hire insurance to protect us against loss of income in the event one of our vessels cannot be employed due to damage that is covered under the terms of our hull and machinery insurance. Under our loss of hire policies, our insurer generally will pay us the hire rate agreed in respect of each vessel for each day in excess of 14 days and with a maximum period of 180 days.

    Drydocking.    We must periodically drydock each of our vessels for inspection, repairs and maintenance and any modifications required to comply with industry certification or governmental requirements. In accordance with industry certification requirements, we drydock our vessels at least every 60 months until the vessel is 15 years old, after which drydocking takes place at least every 30 months thereafter as required for the renewal of certifications required by classification societies. For vessels operating on time charters, we capitalize the costs directly associated with the classification and regulatory requirements for inspection of the vessels major repairs and improvements incurred during drydocking that increase the earnings capacity or improve the efficiency or safety of the vessels. We expense costs related to routine repairs and maintenance performed during drydocking or as otherwise incurred. For vessels operating on bareboat charters, the customer bears the cost of any drydocking. The number of drydockings undertaken in a given period and the nature of the work performed determine the level of drydocking expenditures.

    Depreciation.Depreciation on vessels and equipment is calculated on a straight-line basis over the asset’sasset's estimated useful life of 25 years for the hull and equipment, less an estimated residual value. Drydocking cost is depreciated on a straight-line basis over the period until the next planned drydocking takes place. For vessels that are newly built or acquired, an element of the cost of the vessel is allocated initially to a drydock component and depreciated on a straight-line basis over the period until the next planned drydocking. When significant drydocking expenditures occur prior to the expiration of this period, we expense the remaining balance of the original drydocking cost in the month of the subsequent drydocking.

    Impairment of Long-Lived Assets.    Vessels and equipment, vessels under construction and intangible assets subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If circumstances require a long-lived asset or asset group to be tested for possible impairment, we first compare the


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    undiscounted cash flows expected to be generated by that asset or asset group to its carrying value. If the carrying value of the long-lived asset is not recoverable on an undiscounted cash flow basis, an impairment is recognized to the extent that the carrying value exceeds its fair value. Fair value is determined through various valuation techniques including discounted cash flow models, quoted market values and third-party independent appraisals, as considered necessary.

    Other Finance Expense.    Other finance expense includes external bank fees, financing service fees paid to related parties and guarantee commissions paid to external and related parties in connection with our debt and other bank services.

    Revenue Days.    Revenue days are the total number of calendar days our vessels were in our possession during a period, less the total number of off-hire days during the period associated with major repairs, or drydockings. Consequently, revenue days represent the total number of days available for the vessel to earn revenue. Idle days, which are days when the vessel is available to earn revenue, yet is not employed, are included in revenue days. We use revenue days to highlight changes in net voyage revenues between periods.

    Average Number of Vessels. For periods prior to our IPO, the    The historical average number of vessels consists of the average number of owned vessels that were in our possession during a period. For periods after our IPO, the average number of ships will consist of the average number of owned vessels that are in our possession during the periods presented. We use average number of shipsvessels primarily to highlight changes in vessel operating expenses, hire rate expense and depreciation and amortization.

    Insurance

    Hull and Machinery InsuranceInsurance..    We have obtained hull and machinery insurance on all our vessels to insure against marine and war risks, which include the risks of damage to our vessels, salvage and towing costs, and also insures against actual or constructive total loss of any of our vessels. However, our insurance policies contain deductible amounts for which we are responsible. We have also arranged additional total loss coverage for each vessel. This coverage, which is called hull interest and freight interest coverage, provides us additional coverage in the event of the total loss or the constructive total loss of a vessel.

    Loss of Hire InsuranceInsurance..    We have obtained loss of hire insurance to protect us against loss of income in the event one of our vessels cannot be employed due to damage that is covered under the terms of our hull and machinery insurance. Under our loss of hire policies, our insurer will pay us the hire rate agreed in respect of each vessel for each day, in excess of a certain number of deductible days, for the time that the vessel is out of service as a result of damage, for a maximum of 180 days. The number of deductible days for the vessels in our fleet is 14 days per vessel.

    All of our hull and machinery, hull interest and freight interest and loss of hire insurance policies are written on the NMIP, which through the hull and maintenance coverage also offers comprehensive collision liability coverage of up to the insured hull and maintenance value of the vessel. NMIP is based on an “all"all risk principle”principle" and offers what is considered to be the most comprehensive insurance obtainable in any of the world’sworld's marine markets today. The agreed deductible on each vessel averages $150,000.

    Protection and Indemnity InsuranceInsurance..    Protection and indemnity insurance, which covers our third-party legal liabilities in connection with our shipping activities, is provided by a P&I club. This includes third-party liability and other expenses related to the injury or death of crew members, passengers and other third-party persons, loss or damage to cargo, claims arising from collisions with other vessels or from contact with jetties or wharves and other damage to other third-party property, including pollution arising from oil or other substances, and other related costs, including wreck removal. Our current protection and indemnity insurance coverage is unlimited, except for pollution, which is limited to $1 billion per vessel per incident.


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    Customers

    In the years ended December 31, 2015, 20142018, 2017 and 2013,2016, revenues from the following customers accounted for over 10% of our combined revenues:

     
     Year Ended December 31, 
    (U.S. Dollars in thousands)
     2018 2017 2016 

    Eni Trading and Shipping S.p.A. 

     $43,955  16%$46,441  22%$47,001  27%

    Fronape International Company, a subsidiary of Petrobras Transporte S.A. 

      45,115  17% 45,115  21% 45,236  26%

    Equinor ASA

      23,426  8% 23,189  11% 21,760  13%

    Repsol Sinopec Brasil, B.V., a subsidiary of Repsol Sinopec Brasil, S.A. 

      36,978  13% 28,129  13% 20,904  12%

    Brazil Shipping I Limited, a subsidiary of Royal Dutch Shell

      81,816  29% 51,259  24% 20,496  12%

    Standard Marine Tønsberg AS, a subsidiary of ExxonMobil

      16,872  6% 17,634  8% 17,482  10%

    Galp Sinopec Brasil Services BV

      30,029  11% 734  1%   0%

          Year Ended December 31, 

    Customer

      

    Vessels

      2015  2014  2013 
          (U.S. Dollars in thousands) 

    Transpetro

      

    Fortaleza Knutsen

    Recife Knutsen

    Dan Cisne

    Dan Sabia

      $40,618     26 $25,666     23 $22,860     31

    ENI

      

    Hilda Knutsen

    Torill Knutsen

      $46,806     30 $23,512     21 $—       —    

    Statoil

      Bodil Knutsen  $23,203     15 $22,263     20 $21,563     29

    Repsol

      Carmen Knutsen  $19,789     13 $20,338     18 $8,417     12

    BG Group

      Windsor Knutsen  $4,466     3 $12,124     11 $20,311     28

    KNOT

      Windsor Knutsen  $16,231     11 $8,880     8 $—       —    

    A.Operating

    A.    Operating Results

    Year Ended December 31, 20152018 Compared with the Year Ended December 31, 20142017

     
     Year Ended
    December 31,
      
      
     
    (U.S. Dollars in thousands)
     2018 2017 Change % Change 

    Time charter and bareboat revenues

     $278,191 $212,501 $65,690  31%

    Loss of hire insurance recoveries

      450  5,176  (4,726) –91%

    Other income

      815  1,526  (711) –47%

    Vessel operating expenses

      (56,730) (46,709) (10,021) 21%

    Depreciation

      (88,756) (71,583) 17,173  24%

    General and administrative expenses

      (5,290) (5,555) (265) –5%

    Interest income

      739  248  491  198%

    Interest expense

      (49,956) (30,714) (19,242) 63%

    Other finance expense

      (1,260) (1,406) 146  –10%

    Realized and unrealized gain (loss) on derivative instruments

      4,039  4,831  (792) –16%

    Net gain (loss) on foreign currency transactions

      (79) (267) 188  –70%

    Income tax benefit (expense)

      2  16  (14) –88%

    Net income

      82,165  68,064  14,101  21%

       Year Ended December 31,         
    (U.S. Dollars in thousands)  2015   2014   Change   % Change 

    Time charter and bareboat revenues

      $154,750    $112,784    $41,966     37

    Other income

       274     57     217     381

    Vessel operating expenses

       27,543     23,879     3,664     15

    Depreciation

       48,844     34,322     14,522     42

    General and administrative expenses

       4,290     4,323     (33   (1)% 

    Goodwill impairment charge

       6,217     —      6,217     N/A  

    Interest income

       8     13     (5   (38)% 

    Interest expense

       (17,451   (15,271   (2,180   14

    Other finance expense

       (504   (1,271   767     (60)% 

    Realized and unrealized gain (loss) on derivative instruments

       (9,695   (6,407   (3,288   51

    Net gain (loss) on foreign currency transactions

       (105   26     (131   (504)% 

    Income tax benefit (expense)

       59     (15   74     (493)% 

    Net income

       40,442     27,392     13,050     48

    Time Charter and Bareboat Revenues.    Time charter and bareboat revenues for the year ended December 31, 20152018 were $154.8$278.2 million, an increase of $42.0$65.7 million compared to $112.8$212.5 million for the year ended December 31, 2014.2017. This increase was mainly due to increased revenues of: (i) $23.4of $57.9 million resulting from theHildaAnna Knutsen, theBrasil Knutsen, theLena Knutsen, theVigdis Knutsen and theTorillTordis Knutsen being included in our results of operations from JulyMarch 1, 2014,2018, December 15, 2017, September 30, 2017, June 1, 2017 and March 1, 2017, respectively, and full earnings from theWindsor Knutsen and theCarmen Knutsen due to planned drydocking in 2017. The increase was partially offset by a $2.8 million decrease in time charter revenues due to drydocking of theHilda Knutsen, theTorill Knutsen and theIngrid Knutsen in 2018 and by a $0.4 million decrease due to an accrual for estimated underperformance of theHilda Knutsen and theTorill Knutsen in 2017.


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            Loss of hire insurance recoveries.    Loss of hire insurance recoveries for the year ended December 31,2018 were $0.5 million compared to $5.2 million for the year ended December 31,2017. The loss of hire insurance recoveries were related to a technical default with theRaquel Knutsen's controllable pitch propeller and a default with theCarmen Knutsen's propeller shaft.

            Other Income.    Other income for the year ended December 31, 2018 was $0.8 million, a decrease of $0.7 million compared to $1.5 million for the year ended December 31, 2017. In October 2015, theWindsor Knutsen commenced operating under a new time charter. The hire rate for the new charter is below the initial charter hire rate and the difference between the new hire rate and the initial rate was paid by KNOT until April 2018. During the year ended December 31, 2018, $0.8 million was recognized as other income pursuant to this guarantee for theWindsor Knutsen compared with $1.2 million in 2017. In addition, $0.3 million was recognized as other income in 2017 connected to the reimbursement for repairs and lost hire from KNOT for theVigdis Knutsen due to a hull damage incident in June 2017.

            Vessel Operating Expenses.    Vessel operating expenses for the year ended December 31, 2018 were $56.7 million, an increase of $10.0 million from $46.7 million in the year ended December 31, 2017. The increase was primarily due to (i) an increase of $15.0 million from theAnna Knutsen, theBrasil Knutsen, theLena Knutsen, theVigdis Knutsen and theTordis Knutsen being included in the results of operations from March 1, 2018, December 15, 2017, September 30, 2017, June 1, 2017 and March 1, 2017, respectively and (ii) $9.5an increase of $0.8 million related to bunkers consumption in connection with the drydocking of theDan CisneBrasil Knutsen in the end of the first quarter of 2018. The increase was partially offset by $0.6 million related to bunkers consumption in connection with the drydocking of theWindsor Knutsen in 2017 and by $5.2 million related to the insurance claim and drydocking of theCarmen Knutsen.

            Depreciation.    Depreciation for the year ended December 31, 2018 was $88.8 million, an increase of $17.2 million from $71.6 million in the year ended December 31, 2017. This increase was mainly due to theAnna Knutsen, theBrasil Knutsen, theLena Knutsen, theVigdis Knutsen and theTordis Knutsen being included in results of operations from March 1, 2018, December 15, 2017, September 30, 2017, June 1, 2017 and March 1, 2017, respectively.

            General and Administrative Expenses.    General and administrative expenses for the year ended December 31, 2018 were $5.3 million, compared to $5.6 million for 2017. The decrease is mainly due to lower activity due to incremental expenses incurred in connection with the common and preferred unit offerings in 2017. The decrease was partly offset by increased costs due to the acquisitions of theAnna Knutsen, theBrasil Knutsen, theLena Knutsen, theVigdis Knutsen and theTordis Knutsen.

            Interest Income.    Interest income for the year ended December 31, 2018 was $739,000 compared to $248,000 for 2017.

            Interest Expense.    Interest expense for the year ended December 31, 2018 was $50.0 million, an increase of $19.2 million from $30.7 million for the year ended December 31, 2017. The increase was mainly due to additional debt incurred in connection with the acquisitions of theAnna Knutsen, theBrasil Knutsen, theLena Knutsen, theVigdis Knutsen and theTordis Knutsen, the refinancing of theHilda Knutsen and theTorill Knutsen and higher LIBOR during the year ended December 31, 2018 compared to the year ended December 31, 2017.

            Other Finance Expense.    Other finance expense for the year ended December 31, 2018 was $1.3 million, a decrease of $0.1 million from $1.4 million for the year ended December 31, 2017. Other finance expenses are primarily related to bank fees and guarantee commissions.


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            Realized and Unrealized Gain (Loss) on Derivative Instruments.    Realized and unrealized gain on derivative instruments for the year ended December 31, 2018 was $4.0 million, compared to $4.8 million for the year ended December 31, 2017, as set forth in the table below:

     
     Year Ended December 31, 
    (U.S. Dollars in thousands)
     2018 2017 $ Change 

    Realized gain (loss):

              

    Interest rate swap contracts

     $1,180 $(2,840)$4,020 

    Foreign exchange forward contracts

      1,084  280  804 

    Total realized gain (loss):

      2,264  (2,560) 4,824 

    Unrealized gain (loss):

              

    Interest rate swap contracts

      4,429  5,514  (1,085)

    Foreign exchange forward contracts

      (2,654) 1,877  (4,531)

    Total unrealized gain (loss):

      1,775  7,391  (5,616)

    Total realized and unrealized gain (loss) on derivative instruments:

     $4,039 $4,831 $(792)

            The unrealized non-cash element of the mark-to-market gain was $1.8 million for the year ended December 31, 2018 compared to the unrealized non-cash element of the mark-to-market gain of $7.4 million for the year ended December 31, 2017. Of the unrealized gain for the year ended December 31, 2018, $4.4 million related to mark-to-market gains on interest rate swaps due to an increase in swap rates during the year, and an unrealized loss of $2.7 million related to foreign exchange contracts due to strength of the U.S Dollar against the Norwegian Kroner (NOK).

            Net Gain (Loss) on Foreign Currency Transactions.    Net loss on foreign currency transactions for the year ended December 31, 2018 was $0.1 million, compared to $0.3 million for the year ended December 31, 2017.

            Income Tax Benefit.    Income tax benefit for the year ended December 31, 2018 was $2,000 compared to $16,000 for the year ended December 31, 2017.

            Net Income.    As a result of the foregoing, we earned net income of $82.2 million for the year ended December 31, 2018 compared to net income of $68.1 million for the year ended December 31, 2017.


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    Year Ended December 31, 2017 Compared with the Year Ended December 31, 2016

     
     Year Ended
    December 31,
      
      
     
    (U.S. Dollars in thousands)
     2017 2016 Change % Change 

    Time charter and bareboat revenues

     $212,501 $172,878 $39,623  23%

    Loss of hire insurance recoveries

      5,176    5,176  N/A 

    Other income

      1,526  793  733  92%

    Vessel operating expenses

      (46,709) (30,903) (15,806) 51%

    Depreciation

      (71,583) (56,230) (15,353) 27%

    General and administrative expenses

      (5,555) (4,371) (1,184) 27%

    Interest income

      248  24  224  933%

    Interest expense

      (30,714) (20,867) (9,847) 47%

    Other finance expense

      (1,406) (1,311) (95) 7%

    Realized and unrealized gain on derivative instruments

      4,831  1,213  3,618  298%

    Net gain (loss) on foreign currency transactions

      (267) (139) (128) 92%

    Income tax benefit

      16  15  1  7%

    Net income

      68,064  61,102  6,962  11%

            Time Charter and Bareboat Revenues.    Time charter and bareboat revenues for the year ended December 31, 2017 were $212.5 million, an increase of $39.6 million compared to $172.9 million for the year ended December 31, 2016. This increase was mainly due to increased revenues of $48.9 million resulting from theBrasil Knutsen, theLena Knutsen, theVigdis Knutsen, theTordis Knutsen and theRaquel Knutsenbeing included in our results of operations from December 15, 2014, (iii) $5.52017, September 30, 2017, June 1, 2017, March 1, 2017 and December 1, 2016, respectively, and full earnings from theBodil Knutsen due to planned drydocking in 2016. The increase was partially offset by a $8.7 million decrease in time charter revenues due to drydocking and repairs of theCarmen Knutsen and drydocking of theWindsor Knutsen in 2017 and by a $0.4 million decrease due to an accrual for estimated underperformance of theHilda Knutsen and theTorill Knutsen in 2017.

            Loss of hire insurance recoveries.    Loss of hire insurance recoveries for the year ended December 31,2017 were $5.2 million compared to $nil million for the year ended December 31,2016. The loss of hire insurance recoveries were related to a technical default with theDan Sabia bRaquel Knutsen'seing included in our results of operations from June 15, 2015 controllable pitch propeller and (iv) $3.6 million related toa default with theIngrid KnutsenCarmen Knutsen'sbeing included in our results of operations from October 15, 2015. propeller shaft.

    Other Income.    Other income for the year ended December 31, 20152017 was $274,000$1.5 million, an increase of $0.7 million compared to $57,000$0.8 million for the same period in 2014.year ended December 31, 2016. Pursuant to the Omnibus Agreement, KNOT agreed to guarantee the payment of the hire rate that is equal to or greater than the hire rate payable under the initial charters of theBodil KnutsenandWindsor Knutsen for a period of five years from the closing date of the IPO. In October 2015, theWindsor Knutsen commenced operating under a new BG Group time charter. The hire rate for the new charter is below the initial charter hire rate and the difference between the new hire rate and the initial rate iswas paid by KNOT. During the year 2015, $122,000ended December 31, 2017, $1.2 million was recognized as other income pursuant to this guarantee.guarantee for theWindsor Knutsen compared with $0.8 million in 2016. In addition, $0.3 million connected to the reimbursement for repairs and lost hire from KNOT for theVigdis Knutsen due to a hull damage incident in June 2017 was recognized as other income.

    Vessel Operating Expenses.    Vessel operating expenses for the year ended December 31, 20152017 were $27.5$46.7 million, an increase of $3.6$15.8 million from $23.9$30.9 million in the year ended December 31, 2014.2016. The increase was primarily due to an increase of $4.8$11.5 million due to theHildaBrasil Knutsen, theLena Knutsen, theVigdis Knutsen, theTordis Knutsen and theTorillRaquel Knutsen being included in ourthe results of operations from JulyDecember 15, 2017, September 30, 2017, June 1, 20142017, March 1, 2017 and an


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    December 1, 2016, respectively. $2.9 million of the increase of $1.0 millionis due to incidents and insurance claims relating to theIngridRaquel Knutsen, being included in our results theTordis Knutsen, theVigdis Knutsen and theCarmen Knutsen and $1.4 million of operations from October 15, 2015, partially offset by lower operating expenses mainlythe increase is due to bunkers consumption in connection with the strengtheningdrydocking of the U.S. dollar againstCarmen Knutsen and the NOK during 2015.Windsor Knutsen.

    Depreciation.    Depreciation for the year ended December 31, 20152017 was $48.8$71.6 million, an increase of $14.5$15.4 million from $34.3$56.2 million in the year ended December 31, 2014 that2016. This increase was mainly due to (i) theHildaBrasil Knutsen, theLena Knutsen, theVigdis Knutsen, theTordis Knutsen and theTorillRaquel Knutsen being included in our results of operations from July 1, 2014, (ii) theDan Cisnebeing included in our results of operations from December 15, 2014, (iii) theDan Sabia being included in our results of operations from2017, September 30, 2017, June 15, 20151, 2017, March 1, 2017 and (iv) theIngrid Knutsenbeing included in our results of operations from October 15, 2015.December 1, 2016, respectively.

    General and Administrative Expenses.    General and administrative expenses for the year ended December 31, 20152017 were $4.3$5.6 million, compared to $4.3$4.4 million for 2014.

    Goodwill Impairment Charge. Goodwill impairment charge for the year ended December 31, 2015 was $6.2 million and $nil for the year ended December 31, 2014. During the three months ended June 30, 2015, we concluded that there were indicators of impairment2016. The increase is mainly due to a significant reductionincremental expenses incurred in connection with the pricecommon unit offerings, private placements of our common units duringSeries A Preferred Units and the quarter. Consequently, we performed an interim vessel and goodwill impairment analysis as of June 30, 2015 on our fleet, and concluded that there was no impairment to the vessels’ values. However, we determined that the carrying valueacquisitions of the goodwill exceeded its fair value. The impairment charge relates mainly to capitalized goodwill which arose in 2008 whenBrasil Knutsen, the Partnership’s predecessor acquiredLena Knutsen, theWindsorVigdis Knutsen, theTordis Knutsen and three other vessels then under construction, in a transaction that was then accounted for as a step transaction. As a result, a goodwill impairment charge of $6.2 million was recognized for the year ended December 31, 2015. The fair value was determined using the present value of the expected future cash flows discounted at a rate equivalent to a market participant’s weighted average cost of capital. The estimates and assumptions regarding expected future cash flows and appropriate discount rates are in part based upon existing contracts, future shuttle tanker rates, historical experience, financial forecasts and industry trends and conditions.Raquel Knutsen.

    Interest Income.    Interest income for the year ended December 31, 20152017 was $8,000$248,000 compared to $13,000$24,000 for 2014.2016.

    Interest Expense.    Interest expense for the year ended December 31, 20152017 was $17.5$30.7 million, an increase of $2.2$9.8 million from $15.3$20.9 million for the year ended December 31, 2014.2016. The increased interest expenseincrease was primarily due to;

    an increase of $2.3 million due to theHilda Knutsen and theTorill Knutsen being included in our results of operations from July 1, 2014;

    an increase of $1.5 million due to theDan Cisne being included in our results of operations from December 15, 2014;

    an increase of $0.8 million due to theDan Sabia being included in our results of operations from June 15, 2015; and

    an increase of $0.4 million due to theIngrid Knutsen being included in our results of operations from October 15, 2015;

    Partially offset by

    a decrease of $1.8 million due to a charge relating to reversal of capitalized loan costs related to our refinancings in June 2014 and November 2014; and

    a decrease of $1.0 million mainly due to a lower marginadditional debt incurred in 2015 dueconnection with the acquisitions of theBrasil Knutsen, theLena Knutsen, theVigdis Knutsen, theTordis Knutsen and theRaquel Knutsen, the refinancing of theHilda Knutsen and the drawdowns of the revolving credit facilities and higher LIBOR during the year ended December 31, 2017 compared to our refinancings in June 2014 and November 2014.
    the year ended December 31, 2016.

    Other Finance Expense.Other finance expense for the year ended December 31, 20152017 was $0.5$1.4 million, a decreasean increase of $0.8$0.1 million from $1.3 million for the year ended December 31, 2014.2016. Other finance expenses are primarily related to bank fees and guarantee commissions. Other finance expense of $1.3 million for the year ended December 31, 2014 consisted of (i) a $0.4 million payment as compensation to banks for lost loan margin on repaid loans, (ii) a $0.3 million guarantee commission for the outstanding amount under the Guarantee Institute for Export Credits (GIEC) guarantee related to the $120 millionBodil Knutsen credit facility, which was repaid in full in June 2014 and (iii) $0.6 million in other finance expenses. Other finance expense of $0.5 million for the year ended December 31, 2015 consisted of (i) a $0.2 million guarantee commission for the outstanding amount under the GIEC guarantee related to theIngrid Knutsen credit facility and (ii) $0.3 million in other finance expenses.

    Realized and Unrealized Gain (Loss) on Derivative Instruments. The Partnership does not apply hedge accounting for derivative instruments.    Realized and unrealized lossgain on derivative instruments for the year ended December 31, 20152017 was $9.7$4.8 million, compared to $6.4$1.2 million for the year ended December 31, 2014,2016, as set forth in the table below:

     
     Year Ended
    December 31,
      
     
    (U.S. Dollars in thousands)
     2017 2016 $ Change 

    Realized gain (loss):

              

    Interest rate swap contracts

     $(2,840)$(3,886)$1,046 

    Foreign exchange forward contracts

      280  66  214 

    Total realized gain (loss):

      (2,560) (3,820) 1,260 

    Unrealized gain:

              

    Interest rate swap contracts

      5,514  4,254  1,260 

    Foreign exchange forward contracts

      1,877  779  1,098 

    Total unrealized gain:

      7,391  5,033  2,358 

    Total realized and unrealized gain on derivative instruments:

     $4,831 $1,213 $3,618 

            

       Year Ended December 31,     
    (U.S. Dollars in thousands)  2015   2014   Change 

    Realized gain (loss)

          

    Interest rate swap contracts

      $(4,957  $(2,997  $(1,960

    Foreign exchange forward contracts

       (4,348   500     (4,848

    Unrealized gain (loss)

          

    Interest rate swap contracts

       (1,088   (919   (169

    Foreign exchange forward contracts

       698     (2,991   3,689  
      

     

     

       

     

     

       

     

     

     

    Total

      $(9,695  $(6,407  $(3,288
      

     

     

       

     

     

       

     

     

     

    AsThe unrealized non-cash element of December 31, 2015, the total notional amount of our outstanding interest rate swap contracts that were entered into in order to economically hedge outstanding or forecasted debt obligationsmark-to-market gain was $410.0 million. In addition to an increased notional amount, the increased net realized and unrealized loss on derivative instruments was due to a declining long-term interest rate during 2015 compared to 2014. As of December 31, 2015, we had entered into foreign exchange forward contracts, selling a total notional amount of $35.0$7.4 million against NOK at an average exchange rate of NOK 8.2805 per U.S. Dollar, which are economic hedges for certain vessel operating expenses and general expenses in NOK. During the year ended December 31, 2015, we realized a loss2017 compared to the unrealized non-cash element of $4.3the mark-to-market gain of $5.0 million for the year ended December 31, 2016. Of the unrealized gain for the year ended


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    December 31, 2017, $5.5 million related to mark-to-market gains on interest rate swaps due to an increase in swap rates during the year, and accounted for an unrealized gain of $0.7$1.9 million on ourrelated to foreign exchange forward contracts due to strengtheningthe weakness of the U.S.U.S Dollar relative to NOK.against the Norwegian Kroner (NOK).

    Net Gain (Loss) on Foreign Currency Transactions.    Net loss on foreign currency transactions for the year ended December 31, 20152017 was $105,000,$0.3 million, compared to net gain on currency transactions of $26,000$0.1 million for the year ended December 31, 2014.2016.

    Income Tax Benefits (Expense).Benefit.Income tax benefitsbenefit for the year ended December 31, 20152017 was $59,000$16,000 compared to income tax expense of $15,000 for the year ended December 31, 2014.2016.

    Net Income.As a result of the foregoing, we earned net income of $40.4$68.1 million for the year ended December 31, 20152017 compared to net income of $27.4$61.1 million for the year ended December 31, 2014.

    2016.

    Year Ended December 31, 2014 Compared with the Year Ended December 31, 2013

       Year Ended December 31,         
    (U.S. Dollars in thousands)  2014   2013   Change   % Change 

    Time charter and bareboat revenues

      $112,784    $73,151    $39,633     54

    Other income

       57     —      57     N/A  

    Loss of hire insurance recoveries

       —      250     (250   N/A  

    Vessel operating expenses

       23,879     14,288     9,591     67

    Depreciation

       34,322     23,768     10,554     44

    General and administrative expenses

       4,323     5,361     (1,038   (19)% 

    Interest income

       13     30     (17   (57)% 

    Interest expense

       (15,271   (10,773   (4,498   42

    Other finance expense

       (1,271   (2,048   777     (38)% 

    Realized and unrealized gain (loss) on derivative instruments

       (6,407   505     (6,912   (1369)% 

    Net gain on foreign currency transactions

       26     193     (167   (87)% 

    Income tax expense

       (15   (2,827   2,812     (99)% 

    Net income

       27,392     15,064     12,328     82

    Time Charter and Bareboat Revenues. Time charter and bareboat revenues for the year ended December 31, 2014 were $112.8 million, an increase of $39.6 million, compared to $73.2 million for the year ended December 31, 2013. This increase was principally due to increased time charter earnings of $23.5 million resulting from theHilda Knutsen and theTorill Knutsen being included in our results of operations from July 1, 2014 and $11.9 million related to theCarmen Knutsen being included in our results of operations from August 1, 2013. During 2013, there was a one-time cost related to termination of a commercial management agreement with KNOT Management resulting in a reduction in revenues of $3.5 million in 2013. This one-time cost was compensated by KNOT by a corresponding increase in the equity of the Partnership at the closing of the IPO.

    Other Income. Other income for the year ended December 31, 2014 was $57,000 compared to $nil for the same period in 2013.

    Loss of Hire Insurance Recoveries. There was no loss of hire insurance recoveries for the year ended December 31, 2014. The $0.3 million loss of hire insurance recovery during the year ended December 31, 2013 was a final insurance settlement related to a propeller damage of theWindsor Knutsen.

    Vessel Operating Expenses. Vessel operating expenses for the year ended December 31, 2014 were $23.9 million, an increase of $9.6 million from $14.3 million in the year ended December 31, 2013. The increase was primarily due to an increase of $5.9 million due to theHilda Knutsen and theTorill Knutsen being included in our results of operations from July 1, 2014 and an increase of $3.0 million due to theCarmen Knutsen being included in our results of operations from August 1, 2013.

    Depreciation. Depreciation for the year ended December 31, 2014 was $34.3 million, an increase of $10.6 million from $23.8 million in the year ended December 31, 2013 that was mainly due to theHilda Knutsen and theTorill Knutsen being included in our results of operations from July 1, 2014 and theCarmen Knutsen being included in our results of operations from August 1, 2013.

    General and Administrative Expenses. General and administrative expenses for the year ended December 31, 2014 were $4.3 million, a decrease of $1.0 million from $5.3 million for the year ended December 31, 2013. Of the $5.3 million for the year ended December 31, 2013, $2.4 million was related to costs for our IPO. For the year ended December 31, 2014, $0.4 million of general and administrative expenses were incurred in connection with the acquisitions of theHilda Knutsen and theTorill Knutsen and the June 2014 public offering.

    Interest Income. Interest income for the year ended December 31, 2014 was $13,000 compared to $30,000 for 2013.

    Interest Expense. Interest expense for the year ended December 31, 2014 was $15.3 million, an increase of $4.5 million from $10.8 million for the year ended December 31, 2013. $3.6 million of the increase is due to theHilda Knutsen and theTorill Knutsen being included in our results of operations from July 1, 2014 and theCarmen Knutsen being included in our results of operations from August 1, 2013. For the year ended December 31, 2014 there was a charge relating to reversal of capitalized loan costs of $1.8 million related to our refinancings in June 2014 and November 2014, compared to a charge relating to reversal of capitalized loan costs of $0.7 million for the year ended December 31, 2013 related to the repayment of loans in April 2013 in connection with our IPO.

    Other Finance Expense.Other finance expense for the year ended December 31, 2014 was $1.3 million, a decrease of $0.8 million from $2.1 million for the year ended December 31, 2013. Other finance expenses are primarily related to bank fees and guarantee commissions. The decrease was primarily due to a $0.6 million decrease in guarantee commissions paid to KNOT and TSSI for the period from January 1, 2013 to April 15, 2013. Prior to the closing of our IPO, the majority of the vessel financing agreements were guaranteed by KNOT and TSSI, for which guarantee commissions were paid based on the outstanding loan balance. Prior to the closing of our IPO, the existing vessel financing agreements were amended to permit the transactions pursuant to which we acquired our initial fleet, and the legal cost of approximately $0.3 million in connection with such amendments was expensed for the year ended December 31, 2013. This decrease was partly offset by expenses of $0.4 million paid as compensation to banks for lost loan margin on repaid loans for the year ended December 31, 2014.

    Realized and Unrealized Gain (Loss) on Derivative Instruments. Realized and unrealized loss on derivative instruments for the year ended December 31, 2014 was $6.4 million, compared to a gain of $0.5 million for the same period in 2013, as set forth in the table below:

       Year Ended December 31     
    (U.S. Dollars in thousands)  2014   2013   Change 

    Realized gain (loss)

          

    Interest rate swap contracts

      $(2,997  $(1,265  $(1,732

    Foreign exchange forward contracts

       500     —      500  

    Unrealized gain (loss)

          

    Interest rate swap contracts

       (919   1,522     (2,441

    Foreign exchange forward contracts

       (2,991   248     (3,239
      

     

     

       

     

     

       

     

     

     

    Total

      $(6,407  $505    $(6,912
      

     

     

       

     

     

       

     

     

     

    As of December 31, 2014, the total notional amount of our outstanding interest rate swap contracts that were entered into in order to economically hedge outstanding or forecasted debt obligations was $382.3 million. In addition to an increased notional amount, the increased net realized and unrealized loss on derivative instruments was due to a declining long-term interest rate during 2014 compared to 2013. As of December 31, 2014, we had entered into foreign exchange forward contracts, selling a total notional amount of $20.0 million against NOK at an average exchange rate of NOK 6.395 per 1.0 U.S. Dollar, which are economic hedges for certain vessel operating expenses and general expenses in NOK. During the year ended December 31, 2014, we realized a gain of $0.5 million and accounted for an unrealized loss of $3.0 million on our foreign exchange forward contracts due to strengthening of the U.S. Dollar relative to NOK. The foreign exchange forward contracts realized expired during 2014, and during 2014 the Partnership entered into new foreign exchange forward contracts that expire during 2015.

    Net Gain on Foreign Currency Transactions. Net gain on foreign currency transactions for the year ended December 31, 2014 was $26,000, a decrease of $167,000 from the net gain on currency transactions of $193,000 for the year ended December 31, 2013.

    Income Tax Expense.Income tax expense for the year ended December 31, 2014 was $15,000, compared to $2.8 million for the year ended December 31 2013.

    After the reorganization of the activities of the predecessor to KNOT Offshore Partners LP (the “Predecessor”) into the new group structure in February 2013, all profit from continuing operations in Norway became taxable within the tonnage tax regime and deferred tax benefits are not recognized because future utilization is not probable. The consequence of the reorganization was a one-time entrance tax into the Norwegian tonnage tax regime due to our acquisition of the shares in the subsidiary that owns theFortaleza Knutsen and theRecife Knutsen. The one-time entrance tax was estimated to be approximately $2.7 million at December 31, 2013 of which approximately $0.6 million was payable in October 2014.

    Under the tonnage tax regime, the tax is based on the tonnage of the vessel and the operating income is not taxed. The net financial income and expense remains taxable as ordinary income tax for entities subject to the tonnage tax regime and amounted to approximately $0.2 million in 2013. In addition, the income tax expense in 2013 consisted of income taxes related to the ordinary Norwegian tax regime partly related to the carve-out period, and negative translation differences of $0.2 million. As of December 31, 2014, the income tax of $15,000 relates to UK income tax. All Norwegian subsidiaries and their operations are subject to the tonnage tax regime and at December 31, 2014 their tax base was negative.

    The tax expense prior to our IPO reflects the Norwegian ordinary tax regime in addition to the tonnage tax regime. The tax expense and the deferred tax assets and liabilities prior to our IPO are, therefore, not comparable to the ongoing operation and the tax after the date of our IPO. All of the tax positions related to the ordinary Norwegian tax regime were eliminated at the date of our IPO. For additional information, please read Note 17—Income Taxes in the consolidated and combined carve-out financial statements included in this Annual Report.

    Net Income.As a result of the foregoing, we earned net income of $27.4 million for the year ended December 31, 2014 compared to net income of $15.1 million for the year ended December  31, 2013.

    B.    Liquidity and Capital Resources

    Liquidity and Cash Needs

    We operate in a capital-intensive industry, and we expect to finance the purchase of additional vessels and other capital expenditures through a combination of borrowings from commercial banks, cash generated from operations and debt and equity financings. In addition to paying distributions, our other liquidity requirements relate to servicing our debt, funding investments (including the equity portion of investments in vessels), funding working capital and maintaining cash reserves against fluctuations in operating cash flows. We believe our current resources are sufficient to meet our working capital requirements for our current business. Generally, our long-term sources of funds are cash from operations, long-term bank borrowings and other debt and equity financings. Because we distribute our available cash, we expect to rely upon external financing sources, including bank borrowings and the issuance of debt and equity securities, to fund acquisitions and other expansion capital expenditures.

    Our funding and treasury activities are intended to maximize investment returns while maintaining appropriate liquidity. Cash and cash equivalents are held primarily in U.S. Dollars with some balances held in NOK, British Pounds and Euros. We have not made use of derivative instruments other than for interest rate and currency risk management purposes, and we expect to continue to economically hedge our exposure to interest rate fluctuations in the future by entering into new interest rate swap contracts. However, the interest rate swap contracts that were in effect at the time of our IPO were not transferred to us at the closing of our IPO.

    We estimate that we will spend in total approximately $17.9$42.6 million for drydocking and classification surveys for the sixtwelve vessels under time charters in our fleet in 2016, 2017as of March 31, 2019 between 2019 and 2018.2023. As our fleet matures and expands, our drydocking expenses will likely increase. Ongoing costs for compliance with environmental regulations are primarily included as part of our drydocking and society classification survey costs or are a component of our vessel operating expenses. We are not aware of any regulatory changes or environmental liabilities that we anticipate will have a material impact on our current or future operations. There will be further costs related to voyages to and from the dry-dockingdrydocking yard that will depend on the distance from the vessel’svessel's ordinary trading area to dry-dockingthe drydocking yard.

    In August, 2015,        On January 30, 2018, the Partnership’s boardPartnership's subsidiary, Knutsen Shuttle Tankers 15 AS, which owns the vesselTorill Knutsen, closed a new $100 million senior secured term loan facility with a consortium of directors authorizedbanks, in which The Bank of Tokyo-Mitsubishi UFJ acted as agent. The Torill Facility refinanced a program$117 million loan facility associated with theTorill Knutsen that bore interest at a rate of LIBOR plus a margin of 2.5% and was due to be paid in full in November 2018.


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            On March 1, 2018, KNOT Shuttle Tankers AS acquired KNOT 30, the company that owns the shuttle tankerAnna Knutsen from KNOT, for the Partnership to repurchase up to 666,667 of its common units. The board of directors of our general partner concurrently authorized our general partner to purchase up to 333,333 common units of the Partnership. As of both December 31, 2015 and March 18, 2016, the Partnership and our general partner had purchased 180,906 and 90,368 common units, respectively, at an averagea purchase price of $12.71 per unit.$120.0 million, less approximately $106.8 million of outstanding indebtedness related to theAnna Knutsen plus approximately $1.4 million for certain capitalized fees related to the financing of theAnna Knutsen and plus other purchase price adjustments of $5.3 million. On the closing of the acquisition, KNOT 30 repaid approximately $32.3 million of the indebtedness, leaving an aggregate of approximately $74.4 million of debt outstanding under the secured credit facility related to the vessel. The purchase price was settled in cash.

            On September 20, 2018, the Partnership's subsidiaries which own theWindsor Knutsen, theBodil Knutsen, theFortaleza Knutsen, theRecife Knutsen, theCarmen Knutsen and theIngrid Knutsen refinanced their existing bank debt, entering new long-term senior secured credit facilities, the Multi-vessels Facility. The Multi-vessels Facility consists of a term loan of $320 million and a $55 million revolving credit facility.

    As of December 31, 2015, our current liabilities exceeded current assets by $39.32018, the Partnership had available liquidity of $70.4 million, which consisted of cash and cash equivalents of $41.7 million and availability under the revolving credit facilities of $28.7 million. Included within current liabilities are mark-to-market valuationsAs of derivative instruments representing $5.1 millionApril 10, 2019, the revolving credit facilities had an aggregate undrawn capacity of these liabilities, and included within current assets are mark-to-market valuations of swap derivative instruments representing $0.7 million of these assets. We currently$28.7 million.

            The consolidated financial statements have no intention of terminating these derivative instruments (which include interest rate swap contracts and foreign exchange forward contracts) and hence realizing these liabilities.

    been prepared assuming that the Partnership will continue as a going concern. As of December 31, 2015, our2018, the Partnership's net current liabilities were $76.0 million. Included in current liabilities are short term loan obligations that mature before December 31, 2019 and are therefore, presented as current debt.

            The Partnership expects that its primary future sources of funds will be available cash, cash from operations, borrowings under any new loan agreements and the proceeds of any equity financings. The Partnership believes that these sources of funds (assuming the current rates earned from existing charters) will be sufficient to cover operational cash equivalents were $23.6 millionoutflows and we had an undrawnongoing obligations under the Partnership's financing commitments to pay loan interest and make scheduled loan repayments and to make distributions on its outstanding units. Accordingly, the Partnership believes that its current resources, including amounts available to be drawn under the revolving credit facilityfacilities of $20.0 million.

    We believe that our current resources$28.7 million, are sufficient to meet our working capital requirements for ourits current business for at least the next 12twelve months.

    Capital Expenditures

    We reserve cash from operations for future maintenance capital expenditures, working capital and other matters. Because of the substantial capital expenditures we are required to make to maintain our fleet, our annual estimated maintenance and replacement capital expenditures are $30.3$55.5 million, which is comprised of $26.6$47.0 million for replacing our current vessels at the end of their useful lives and $3.7$8.5 million for drydocking maintenance and classification surveys.


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    Cash Flows

    The following table summarizes our net cash flows from operating, investing and financing activities and our cash and cash equivalents for the periods presented:

     
     Year Ended December 31, 
    (U.S. Dollars in thousands)
     2018 2017 2016 

    Net cash provided by (used in) operating activities

     $148,646 $154,585 $108,445 

    Net cash provided by (used in) investing activities

      (15,493) (94,857) (13,952)

    Net cash provided by (used in) financing activities

      (137,376) (41,378) (90,345)

    Effect of exchange rate changes on cash

      (169) 90  (57)

    Net increase (decrease) in cash and cash equivalents

      (4,392) 18,440  4,091 

    Cash and cash equivalents at the beginning of the period

      46,104  27,664  23,573 

    Cash and cash equivalents at the end of the period

      41,712  46,104  27,664 

       Year Ended December 31, 
    (U.S. Dollars in thousands)  2015   2014   2013 

    Net cash provided by operating activities

      $89,160    $59,339    $44,160  

    Net cash used in investing activities

       (46,488   (121,946   (55,468

    Net cash provided by (used in) financing activities

       (49,575   64,768     38,890  

    Effect of exchange rate changes on cash

       (270   (251   (33

    Net increase (decrease) in cash and cash equivalents

       (7,173   1,910     27,549  

    Cash and cash equivalents at the beginning of the year

       30,746     28,836     1,287  

    Cash and cash equivalents at the end of the year

       23,573     30,746     28,836  

    Net Cash Provided by Operating Activities

            Net cash provided by operating activities decreased by $5.9 million to $148.6 million for the year ended December 31, 2018 compared to $154.6 million for 2017. The decrease was mainly due to changes in working capital elements, especially in amounts due to and from related parties, and increase drydocking expenditures of $12.4 million for the scheduled drydocking of theBrasil Knutsen, theHilda Knutsen, theTorill Knutsen and theIngrid Knutsen in 2018 compared to drydocking expenditures of $6.9 million for the scheduled drydocking of theWindsor Knutsen andCarmen Knutsen in 2017. The decrease was partially offset by higher earnings from theAnna Knutsen, theBrasil Knutsen, theLena Knutsen, theVigdis Knutsen and theTordis Knutsen being included in our results of operations as of March 1, 2018, December 15, 2017, September 30, 2017, June 1, 2017 and March 1, 2017, respectively.

    Net cash provided by operating activities increased by $29.8$46.1 million to $89.2$154.6 million for the year ended December 31, 20152017 compared to $59.3$108.5 million for 2014. The increase was primarily due to higher earnings mainly from (i) theIngrid Knutsenbeing included in our results of operation from October 15, 2015, (ii) theDan Sabiabeing included in our results of operation from June 15, 2015, (iii) theHilda KnutsenandTorill Knutsenbeing included in our results of operation for the entire year in 2015 as compared to six months in 2014 and (iv) theDan Cisnebeing included in our results of operation for the entire year in 2015 as compared to 15 days in 2014.

    Net cash provided by operating activities increased by $15.1 million to $59.3 million for the year ended December 31, 2014 compared to $44.2 million for 2013.2016. The increase was mainly due to higher earnings through the contributions from (i) theHildaBrasil Knutsenand, theTorillLena Knutsen, theVigdis Knutsen, theTordis Knutsen and theRaquel Knutsenbeing included in our results of operations from Julyas of December 15, 2017, September 30, 2017, June 1, 20142017, March 1, 2017 and (ii)December 1, 2016, respectively. The increase was partially offset by increased drydocking expenditures of $6.9 million for the scheduled drydocking of theWindsor Knutsen andCarmen Knutsen being included in our results2017 compared to drydocking expenditures of operations$2.5 million for the entire yearscheduled drydocking of theBodil Knutsen in 2014 as compared to five months in 2013. Net cash provided by operating activities for the year ended December 31, 2013 was reduced by a one-time cost related to termination of a commercial management agreement with KNOT Management, resulting in a reduction in revenues of $3.5 million.2016.

    Net Cash Used in Investing Activities

    Net cash used in investing activities was $46.5$15.5 million for the year ended December 31, 20152018 compared to $121.9$94.9 million for the year ended December 31, 2014.2017. Net cash used in investing activities in 20152018 of $46.5$15.5 million relatedwas mainly due to the following acquisitions:

    (i)The acquisition of theIngrid Knutsen on October 15, 2015, for which we paid a net cash amount to cover the difference between the purchase consideration of $115.0 million less $104.5 million of outstanding indebtedness and other purchase price adjustments of $2.4 million. Net cash used in investing activities is net of cash acquired from the acquisition of theIngrid Knutsen of $4.7 million.

    (ii)The acquisition of theDan Sabiaon June 15, 2015, for which we paid a net cash amount to cover the difference between the purchase consideration of $103.0 million less $64.5 million of outstanding indebtedness and other purchase price adjustments of $2.7 million. Net cash used in investing activities is net of cash acquired from the acquisition of theDan Sabia of $4.3 million.

    Net cash used in investing activities was $121.9 million for the year ended December 31, 2014 compared to $55.5 million for the year ended December 31, 2013. The increase was primarily due to:

    (i) The acquisitions of theHildaAnna Knutsen and theTorill Knutsen on June 30, 2014, for which we paid a net cash amount to cover the difference between the purchase consideration of $335.0$120.0 million less $221.8$106.8 million of outstanding indebtedness plus approximately $1.4 million for certain capitalized fees related to the financing of the vessel and plus other purchase price adjustments of $1.0$5.3 million. Net cash used in investing activities is net of cash acquired from the acquisitionsacquisition of theHildaAnna Knutsen andTorill Knutsen of $9.0$4.5 million.

    (ii)         Net cash used in investing activities was $94.9 million for the year ended December 31, 2017 compared to $14.0 million for the year ended December 31, 2016. Net cash used in investing activities in 2017 of $94.4 million related to the following acquisitions:

      (i)
      The acquisition of theDan CisneTordis Knutsenon December 15, 2014,March 1, 2017, for which we paid a net cash amount to cover the difference between the purchase consideration of $103.0$147.0 million, less $82.2

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        approximately $137.7 million of outstanding indebtedness, plus approximately $21.1 million for a receivable, plus approximately $0.8 million for certain capitalized fees related to the financing of theTordis Knutsenand plus $1.7 million of other purchase price adjustments of $2.6 million.adjustments. Net cash used in investing activities is net of cash acquired from the acquisition of theDan CisneTordis Knutsen of $1.6$0.6 million.

      (ii)
      The acquisition of theVigdis Knutsen on June 1, 2017, which we paid a net cash amount to cover the difference between the purchase consideration of $147.0 million, less approximately $137.7 million of outstanding indebtedness, plus approximately $17.9 million for a receivable, plus approximately $0.9 million for certain capitalized fees related to the financing of theVigdis Knutsen and plus $3.7 million of other purchase price adjustments. Net cash used in investing activities is net of cash acquired from the acquisition of theVigdis Knutsen of $3.4 million.

      (iii)
      The acquisition of theLena Knutsen on September 30, 2017, which we paid a net cash amount to cover the difference between the purchase consideration of $142.0 million, less approximately $133.8 million of outstanding indebtedness, plus approximately $24.1 million for a receivable, plus approximately $1.0 million for certain capitalized fees related to the financing of theLena Knutsen adjusted by $0.1 million of other purchase price adjustments. Net cash used in investing activities is net of cash acquired from the acquisition of theLena Knutsen of $0.5 million.

      (iv)
      The acquisition of theBrasil Knutsen on December 15, 2017, for which we paid a net cash amount to cover the difference between the purchase consideration of $96.0 million, less $59.0 million of outstanding indebtedness, less approximately $35.2 million for a loan (the "Company Liquidity Loan"), plus approximately $0.6 million for certain capitalized fees related to the financing of theBrasil Knutsen and plus $3.4 million of other purchase price adjustments. Net cash used in investing activities is net of cash acquired from the acquisition of theBrasil Knutsen of $5.2 million.

    Net Cash Provided by (Used in)Used in Financing Activities

    Net cash used in financing activities during the year ended December 31, 20152018 was $49.6$137.4 million and mainly related to the following:

    The net proceeds
      Proceeds of $100 million from the June 2015 Offeringrefinancing of $116.6theTorill Knutsen;

      Proceeds of $320 million netfrom the multi-vessel refinancing of offering costs:
    theFortaleza Knutsen, theRecife Knutsen, theBodil Knutsen, theCarmen Knutsen, theWindsor Knutsen and theIngrid Knutsen; and

    Proceeds from drawdowns under the two revolving credit facilities of $77.8 million, of which $22 million was repaid during 2018. The total limit of $80 million on the two credit facilities was drawn down and repaid several times during 2018.

    This was offset by the following:

      Repayment of long-term debt of $78.3$528.0 million, of which $73.2 million was repaid in connection with refinancing of theTorill Knutsen and $341.9 was repaid in connection with the multi-vessel refinancing of theFortaleza Knutsen, theRecife Knutsen, theBodil Knutsen, theCarmen Knutsen, theWindsor Knutsen and theIngrid Knutsen;

      Payments of $5.3 million in debt issuance costs in relation to the refinancing of theTorill Knutsen and the multi-vessel refinancing of theFortaleza Knutsen, theRecife Knutsen, theBodil Knutsen, theCarmen Knutsen, theWindsor Knutsen and theIngrid Knutsen;

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      Repayments of long-term debt from related parties of $22.5 million;
    and

    Payment of cash distributions to unitholders of $79.3 million, of which $7.2 million was distributions to Series A Preferred Units.

            Net cash used in financing activities during the year ended December 31, 2017 was $41.4 million and mainly related to the following:

      Net proceeds from issuance of common units in public offerings in January 2017 and in November 2017 of $120.9 million, of which $1.2 million was contributed from the General Partner in order to maintain the 1.85% general partner interest in the Partnership;

      Net proceeds from issuance of Series A Preferred Units in February 2017 and in June 2017 of $87.5 million;

      Proceeds of $100 million from the refinancing of theHilda Knutsen;

      Proceeds of $10 million from drawdown on the Brasil Facility (as defined below); and

      Proceeds from drawdowns under the two revolving credit facilities of $101.5 million, of which $101.5 million was repaid during 2017. The total limit of $60 million on the two credit facilities was drawn down and repaid several times during 2017.

            This was offset by the following:

      Repayment of long-term debt of $297.7 million, of which $76.9 million was repaid in connection with refinancing of theHilda Knutsen;

      Payments of $1.2 million in debt issuance costs in relation to the refinancing of theHilda Knutsen;

      Repayments of long-term debt from related parties of $93.4 million; and

      Payment of cash distributions to unitholders of $69.0 million, of which $3.5 million was distributions to Series A Preferred Units.

            Net cash used in financing activities during the year ended December 31, 2016 was $90.3 million and mainly related to the following:

      Proceeds from the utilization of our revolving credit facility of $30.0 million, of which $5.0 million was repaid in July 2016 and $25.0 million was repaid in January 2017; and

      Proceeds from the Seller's Credit and Seller's Loan of total $25.0 million, provided by KNOT for the acquisition of theRaquel Knutsen.

            This was offset by the following:

      Repayment of long-term debt of $61.0 million;

      Repayment of long-term debt from related parties of $32.3$24.0 million;

    Repurchase of common units of $2.3 million; and



    Payment of cash distributions to unitholders during 20152016 of $53.4$60.2 million.

    Net cash provided by financing activities during the year ended December 31, 2014 was $64.8 million and mainly related to the following:Table of Contents

    The net proceeds from the June and July 2014 equity offerings of $146.7 million;

    Proceeds of $240 million from the refinancing of theWindsor Knutsen, theBodil Knutsen and theCarmen Knutsen;

    Proceeds of $137.8 million from the refinancing of theFortaleza Knutsen and theRecife Knutsen; and

    Proceeds of a seller’s credit of $12.0 million provided by KNOT for the acquisition of theDan Cisne.

    This was partially offset by the following:

    Repayment of long-term debt of $420.2 million;

    Repayment of the seller’s credit from KNOT of $10.6 million related to the acquisition of theCarmen Knutsen; and

    Payment of cash distributions during 2014 of $36.6 million.

    Net cash provided by financing activities during the year ended December 31, 2013 was $38.9 million and mainly related to the following:

    The net proceeds from the exercise in full of the underwriters’ over-allotment option in connection with our IPO (approximately $21.95 million) were used by the Partnership to make a cash distribution to KNOT;

    During 2013, there was an increase in the borrowings outstanding under the Fortaleza and Recife Facility (as defined below) of $25.4 million, a seller’s credit provided by KNOT in the form of a loan for $10.5 million after purchase price adjustments for the acquisition of theCarmen Knutsen and a $20.0 million borrowing under the revolving credit facility;

    Repayments of long-term debt of $142.9 million; and

    Payment of cash distributions during 2013 of $13.2 million.

    Borrowing Activities

    Long-Term Debt.    As of December 31, 20152018 and 2014,2017, our long-term debt consisted of the following:

    (U.S. Dollars in thousands)
     Vessel December 31, 2018 December 31, 2017 

    $320 million loan facility

     Windsor Knutsen, Bodil Knutsen, Carmen Knutsen, Fortaleza Knutse, Recife Knutsen, Ingrid Knutsen  312,472   

    $55 million revolving credit facility

        26,279   

    $220 million loan facility

     Windsor Knutsen, Bodil Knutsen, Carmen Knutsen $ $165,000 

    Fortaleza and Recife loan facility

     Fortaleza Knutsen, Recife Knutsen    109,375 

    Ingrid loan facility

     Ingrid Knutsen    61,085 

    Hilda loan facility

     Hilda Knutsen  90,769  96,923 

    $117 million loan facility

     Torill Knutsen    73,177 

    Torill loan facility

     Torill Knutsen  95,000   

    $172.5 million loan facility

     Dan Cisne, Dan Sabia  81,839  91,339 

    Raquel loan facility

     Raquel Knutsen  63,184  68,414 

    Tordis loan facility

     Tordis Knutsen  85,991  91,051 

    Vigdis loan facility

     Vigdis Knutsen  87,256  92,316 

    Lena loan facility

     Lena Knutsen  85,750  90,650 

    Brasil loan facility

     Brasil Knutsen  63,454  69,000 

    Anna loan facility

     Anna Knutsen  70,353   

    $25 million revolving credit facility

        25,000  25,000 

    Total long-term debt

        1,087,347  1,033,330 

    Less: current installments

        109,534  95,176 

    Less: unamortized deferred loan issuance costs

        2,608  2,191 

    Current portion of long-term debt

        106,926  92,985 

    Amounts due after one year

        977,813  938,154 

    Less: unamortized deferred loan issuance costs

        7,448  4,524 

    Long-term debt, less current installments and unamortized deferred loan issuance costs

       $970,365 $933,630 

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          As of December 31, 
    (U.S. Dollars in thousands)  Vessel  2015   2014 

    $220 million loan facility

      Windsor Knutsen, Bodil Knutsen,

    Carmen Knutsen

      $196,429    $212,142  

    $20 million revolving credit facility

      Windsor Knutsen, Bodil Knutsen,

    Carmen Knutsen

       —      20,000  

    $140 million loan facility

      Fortaleza Knutsen & Recife Knutsen   126,875     135,625  

    $117 million loan facility

      Hilda Knutsen   81,797     86,724  

    $117 million loan facility

      Torill Knutsen   83,033     87,960  

    $172.5 million loan facility

      Dan Cisne & Dan Sabia   109,339     58,770 

    $77.5 million loan facility

      Ingrid Knutsen   74,217     —   

    $12.0 million seller’s credit

         —      12,000  
        

     

     

       

     

     

     

    Total long-term debt

         671,690     613,221  
        

     

     

       

     

     

     

    Less current installments

         49,684     38,718  

    Less $12.0 million seller’s credit

         —      12,000  
        

     

     

       

     

     

     

    Long-term debt, excluding current installments and seller’s credit

        $622,006    $562,503  
        

     

     

       

     

     

     

    OurThe Partnership's outstanding debt of $671.7$1,087.3 million as of December 31, 20152018 is repayable as follows:follows :

    (U.S. Dollars in thousands)
     Period repayment Balloon repayment 

    2019

      84,534  25,000 

    2020

      85,945   

    2021

      86,545  70,811 

    2022

      71,210  236,509 

    2023

      55,535  202,185 

    2024 and thereafter

      15,180  153,893 

    Total

     $398,949 $688,398 

            

    Year Ending December 31,

      U.S. Dollars in
    thousands
     

    2016

      $49,684  

    2017

       50,084  

    2018

       203,422  

    2019

       266,260  

    2020

       17,650  

    2021- thereafter

       84,590  
      

     

     

     

    Total

      $671,690  
      

     

     

     

    As of December 31, 2015,2018, the interest rates on ourthe Partnership's loan agreements (other than tranche two of the $77.5 million loan facility) were the London Interbank Offered Rate (“LIBOR”)LIBOR plus a fixed margin ranging from 2.125%1.8% to 2.5%2.4%. On the export credit loan of $55.1 million, which is tranche two of the $77.5 million loan facility secured by theIngrid Knutsen, the annual rate is 3.85% composed of a 2.5% bank facility rate plus a commission of 1.35% to the export credit guarantor. The guarantee commission of 1.35% is classified as other finance expense. See Note 2(e)2(f)—Financial Income (Expense) in the consolidated and combined carve-out financial statements included in this Annual Report.

      $240320 Million SecuredTerm Loan Facility and $55 Million Revolving Credit Facility

            In September 2018, the Partnership's subsidiaries which own theWindsor Knutsen, theBodil Knutsen, theFortaleza Knutsen, theRecife Knutsen, theCarmen Knutsen and theIngrid Knutsen ("the Vessels"), entered into new senior secured credit facilities (the "Multi-vessels Facility") in order to refinance their existing long term bank debt. The Multi-vessels Facility consists of a term loan of $320 million and a $55 million revolving credit facility. The term loan is repayable in 20 consecutive quarterly installments, with a final payment at maturity in September 2023 of $177 million, which includes the balloon payment and last quarterly installment. The term loan bears interest at a rate per annum equal to LIBOR plus a margin of 2.125%. The revolving credit facility will mature in September 2023, and bears interest at LIBOR plus a margin of 2.125%. There is a commitment fee of 0.85% payable on the undrawn portion of the revolving credit facility. The loans are guaranteed by the Partnership and secured by mortgages on the Vessels. The Multi-vessels Facility refinanced the $220 million facility, the $35 million revolving credit facility, the Fortaleza and Recife loan facility and the Ingrid loan facility.

            The Vessels, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the Multi-vessel facility. The Partnership and the borrowers (except for the Partnership subsidiary that owns theRecife Knutsen and theFortaleza Knutsen) are guarantors, and the Multi-vessels Facility is secured by vessel mortgages on theWindsor Knutsen, theBodil Knutsen, theFortaleza Knutsen, theRecife Knutsen, theCarmen Knutsen and theIngrid Knutsen.

            The Multi-vessels Facility contains the following financial covenants:

      The aggregate market value of the Vessels shall not be less than 125% of the outstanding balance under the Multi-vessels Facility;

      Positive working capital of the borrowers and the Partnership;

      Minimum liquidity of the Partnership of $15 million plus increments of $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract up to 8 vessels and $1 million for each owned vessel with less than 12 months remaining tenor on its employment contract up to 12 additional vessels in excess of 8 vessels;

      Minimum book equity ratio for the Partnership of 30%; and

      Minimum EBITDA to interest ratio for the Partnership of 2.50.

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            The Multi-vessels Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2018, the borrowers and the guarantors were in compliance with all covenants under this facility.

      $220 Million Term Loan Facility and $35 Million Revolving Credit Facility

            The $220 million Term Loan Facility and the $35 million Revolving Credit Facility were repaid in full in September 2018 with the proceeds from the Multi-vessels Facility.

    In June 2014, the Partnership’sPartnership's subsidiaries KNOT Shuttle Tankers 18 AS, KNOT Shuttle Tankers 17 AS and Knutsen Shuttle Tankers 13 AS entered into a senior syndicate secured loan facility in an aggregate amount of $240 million (the “Senior"Senior Secured Loan Facility”Facility") to repay existing debt under previous credit facilities and a $10.5 million seller’sseller's credit from KNOT. The Senior Secured Loan Facility consistsconsisted of (i) a $220 million term loan (the “Term"Term Loan Facility”Facility") and (ii) a $20 million revolving credit facility (the “Revolving"Revolving Credit Facility”Facility").

    The Revolving Credit Facility terminates in June 2019, and bears interest at LIBOR plus a fixed margin of 2.125%, and has a commitment fee equal to 40% of the margin of the Revolving Credit Facility calculated on the daily undrawn portion of the Revolving Credit Facility. The outstanding balance on the Revolving Credit Facility was repaid on June 23, 2015 using a portion of the net proceeds from the June 2015 Offering. As of December 31, 2015, the Revolving Credit Facility was undrawn.        The Term Loan Facility iswas repayable in quarterly instalmentsinstallments over five years with a final balloon payment due at maturity at June 2019. The Term Loan Facility bearsbore interest at LIBOR plus a margin of 2.125%.

            On June 30, 2016, the Partnership's subsidiaries KNOT Shuttle Tankers 18 AS, KNOT Shuttle Tankers 17 AS and Knutsen Shuttle Tankers 13 AS, as borrowers, entered into an amended and restated senior secured credit facility (the "Amended Senior Secured Loan Facility"), which amended the Senior Secured Loan Facility. The Amended Senior Secured Loan Facility included a new revolving credit facility tranche of $15 million, bringing the total revolving credit commitments under the facility to $35 million. The new revolving credit facility was due to mature in June 2019, bore interest at LIBOR plus a fixed margin of 2.5% and had a commitment fee equal to 40% of the margin of the revolving facility tranche calculated on the daily undrawn portion of such tranche.

            TheWindsor Knutsen,theBodil Knutsenand theCarmen Knutsen, assignments of earnings, charterparty contracts and insurance proceeds arewere pledged as collateral for the Amended Senior Secured Loan Facility. The Amended Senior Secured Loan Facility iswas guaranteed by the Partnership and KNOT Shuttle Tankers AS, and secured by vessel mortgages on theWindsor Knutsen, theBodil Knutsen and theCarmen Knutsen.

      Fortaleza and Recife Loan Facility

            The Fortaleza and Recife Loan Facility was repaid in full in September 2018 with the proceeds from the Multi-vessels Facility.

            In June 2014, the Partnership's subsidiary Knutsen Shuttle Tankers XII KS, as the borrower, entered into a senior syndicate secured loan facility in the amount of $140 million (the "Fortaleza and Recife Facility"). The Senior SecuredFortaleza and Recife Facility was drawn in November 2014 and replaced a $160 million loan facility previously secured by theFortaleza Knutsen and theRecife Knutsen. The Fortaleza and Recife Facility was repayable in quarterly installments over five years with a final balloon payment due at maturity in June 2019. The facility bore interest at LIBOR plus a margin of 2.125%. TheFortaleza Knutsen and theRecife Knutsen, assignments of earnings, charterparty contracts and insurance proceeds were pledged as collateral for the New Fortaleza and Recife Facility. The facility was guaranteed by the Partnership and KNOT Shuttle Tankers AS and was secured by vessel mortgages on theFortaleza Knutsen and theRecife Knutsen.


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      Hilda Loan Facility

            In May 2017, the Partnership's subsidiary, Knutsen Shuttle Tankers 14 AS, which owns the vesselHilda Knutsen, entered into a new $100 million senior secured term loan facility with Mitsubishi UFJ Lease & Finance (Hong Kong) Limited (the "New Hilda Facility"). The New Hilda Facility replaced the $117 million loan facility, which was due to be paid in full in August 2018. The New Hilda Facility is repayable in 28 consecutive quarterly installments with a final payment at maturity of $58.5 million, which includes the balloon payment and last quarterly installment. The New Hilda Facility bears interest at a rate per annum equal to LIBOR plus a margin of 2.2%. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors. The facility matures in May 2024.

            The Hilda Facility contains the following primary financial covenants:

    The aggregate market value of theWindsor Knutsen,Bodil Knutsen andCarmen Knutsen shall not be less than 110% of the outstanding balance under the Senior Secured Loan Facility for the first two years, 120% for the third and fourth years, and 125% thereafter;

      Market value of theHilda Knutsen shall not be less than 110% of the outstanding balance under the Hilda Facility for the first two years, 120% for the third and fourth year, and 125% thereafter;

      Positive working capital forof the borrowersborrower and the Partnership;



    Minimum liquidity of the Partnership of $17$15 million plus increments of $1 million for each additional vessel acquired by the Partnership in excess of eight vessels and $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract;



    Minimum book equity ratio for the Partnership of 30%; and



    Minimum EBITDA to interest ratio for the Partnership of 2.50.

    The Senior Secured Loan Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2015, the borrowers and the guarantors were in compliance with all covenants under this facility.

    $117 Million Hilda Loan Facility

    In July 2011, Knutsen Shuttle Tankers 14 AS, the subsidiary owning theHilda Knutsen, as the borrower, entered into a secured loan facility in an aggregate amount of $117 million (the “Hilda Facility”). The Hilda Facility is repayable in quarterly installments over five years with a final balloon payment due at maturity in July 2018. The Hilda Facility bears interest at LIBOR plus a fixed margin of 2.5%. The facility is secured by a vessel mortgage on theHilda Knutsen.TheHilda Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the Hilda Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors. The Hilda Facility contains the following primary financial covenants:

            

    Market value of theHilda Knutsen shall not be less than 110% of the outstanding balance under the Hilda Facility for the first two years, 120% for the third and fourth year, and 125% thereafter;

    Positive working capital of the borrower and the Partnership;

    Minimum liquidity of the Partnership of $17 million plus increments of $1 million for each additional vessel acquired by the Partnership and $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract;

    Minimum book equity ratio for the Partnership of 30%; and

    Minimum EBITDA to interest ratio for the Partnership of 2.50.

    The Hilda Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2015,2018, the borrower and the guarantors were in compliance with all covenants under this facility.

      $117 Million Torill Loan Facility

    In November 2011,January 2018, the Partnership's subsidiary, Knutsen Shuttle Tankers 15 AS, which owns the subsidiary owning thevesselTorill Knutsen, as the borrower, entered into a new $100 million senior secured term loan facility (the "Torill Facility") with a consortium of banks, in which The Bank of Tokyo-Mitsubishi UFJ acted as agent. The Torill Facility replaced a $117 million secured loan facility, which was due to be paid in an aggregate amount of $117 million (the “Torill Facility”).full in October 2018. The Torill Facility is repayable in 24 consecutive quarterly installments over five years with a final balloon payment of $60.0 million due at maturity in October 2018.maturity. The Torill Facility bears interest at a rate per annum equal to LIBOR plus a fixed margin of 2.5%2.1%. The facility will mature in January 2024 and is securedguaranteed by a vessel mortgage on theTorill Knutsen. TheTorill Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the Torill Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors.Partnership. The Torill Facility contains the following primary financial covenants:

    Market value of theTorill Knutsen shall not be less than 110% of the outstanding balance under the Torill Facility for the first two years, 120% for the third and fourth year, and 125% thereafter;

      Market value of theTorill Knutsen shall not be less than 110% of the outstanding balance under the Torill Facility for the first two years, 120% for the third and fourth years, and 125% thereafter;

      Positive working capital of the borrower and the Partnership;



    Minimum liquidity of the Partnership of $17$15 million plus increments of $1 million for each additional vessel acquired by the Partnership and $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract;

    contract up to 8 vessels and $1 million for each owned vessel with less than 12 months remaining tenor on its employment contract in excess of 8 vessels;

    Minimum book equity ratio for the Partnership of 30%; and



    Minimum EBITDA to interest ratio for the Partnership of 2.50.

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    The Torill Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2015,2018, the borrower and the guarantorsguarantor were in compliance with all covenants under this facility.

      $140 Million Secured Loan Facility

      In June 2014, the Partnership’s subsidiary Knutsen Shuttle Tankers XII KS, as the borrower, entered into a senior syndicate secured loan facility in the amount of $140 million (the “New Fortaleza and Recife Facility”). The New Fortaleza and Recife Facility was drawn in November 2014 and replaced a $160 million loan facility previously secured by theFortaleza Knutsen and theRecife Knutsen. The New Fortaleza and Recife Facility is repayable in quarterly installments over five years with a final balloon payment due at maturity at June 2019. The facility bears interest at LIBOR plus a margin of 2.125%. TheFortaleza Knutsenand theRecife Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the New Fortaleza and Recife Facility. The facility is guaranteed by the Partnership and KNOT Shuttle Tankers AS and is secured by vessel mortgages on theFortaleza Knutsen and theRecife Knutsen.

      The New Fortaleza and Recife Facility contains the following financial covenants:

      The aggregate market value of theFortaleza Knutsen andRecife Knutsen shall not be less than 110% of the outstanding balance under the New Fortaleza and Recife Facility for the first two years, 120% for the third and fourth year, and 125% thereafter;

      Positive working capital of the borrower and the Partnership;

      Minimum liquidity of the Partnership of $17 million plus increments of $1 million for each additional vessel acquired by the Partnership and $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract;

      Minimum book equity ratio for the Partnership of 30%; and

      Minimum EBITDA to interest ratio for the Partnership of 2.50.

      The New Fortaleza and Recife Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2015, the borrower and the guarantors were in compliance with all covenants under this facility.

      $172.5 Million Secured Loan Facility

    In April 2014, KNOT Shuttle Tankers 20 AS and KNOT Shuttle Tankers 21 AS, the subsidiaries owning theDan Cisne andDan Sabia, as the borrowers, entered into a $172.5 million senior secured loan facility. In connection with the Partnership’sPartnership's acquisition of theDan Cisne, in December 2014, the $172.5 million senior secured loan facility was split into a tranche related to theDan Cisne (the “Dan"Dan Cisne Facility”Facility") and a tranche related toDan Sabia (the “Dan"Dan Sabia Facility”Facility").

    The Dan Cisne Facility and the Dan Sabia Facility are guaranteed by the Partnership and secured by a vessel mortgage on theDan Cisne andDan Sabia. The Dan Cisne Facility and the Dan Sabia Facility bear interest at LIBOR plus a margin of 2.4% and are repayable in semiannual instalmentsinstallments with a final balloon payment due at maturity atin September 2023 and January 2024, respectively.

    The facilitiesDan Cisne Facility and Dan Sabia Facility contain the following financial covenants:

    Market value of each of theDan Cisne andDan Sabia shall not be less than 100% of the outstanding balance under the Dan Cisne Facility and Dan Sabia Facility, respectively, for the first three years, and 125% thereafter;

      Market value of each of theDan Cisne andDan Sabia shall not be less than 100% of the outstanding balance under the Dan Cisne Facility and Dan Sabia Facility, respectively, for the first three years, and 125% thereafter;

      Minimum liquidity of the Partnership of $17$15 million plus increments of $1 million for each additional vessel acquired by the Partnership in excess of eight vessels and $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract;

    and

    Minimum book equity ratio for the Partnership of 30%.

    The facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2015,2018, the borrowers and the guarantor were in compliance with all covenants under this facility.

      $77.5 Million SecuredIngrid Loan Facility

            The Ingrid Facility was repaid in full in September 2018 with the proceeds from the Multi-vessels Facility.

    In June 2012, Knutsen NYK Shuttle Tankers 16 AS, the subsidiary owning theIngrid Knutsen, as the borrower, entered into a secured loan facility in an aggregate amount of $90.0 million (the “Ingrid Facility”"Ingrid Facility"). As of the time of the acquisition of theIngrid Knutsen, the aggregate amount outstanding under the facility was $77.5 million. The Ingrid Facility includesincluded two tranches. Tranche one iswas a commercial bank loan of $22.4$19.1 million, repayable in semi-annual installments with a final balloon payment due at maturity in December 2018. Tranche one bearsbore interest at LIBOR, plus a margin of 2.25%.

            Tranche two iswas an export credit loan of $55.1$42.0 million, repayable in semi-annual installments and maturingwhich was due to mature in November 2025. Tranche two bearsbore interest at an annual fixed rate of 3.85%, composed of a 2.5% bank facility rate plus a commission of 1.35% to the export credit guarantor. The facility was secured by a vessel mortgage on theIngrid Knutsen. TheIngrid Knutsen, assignments of earnings, charterparty contracts and insurance proceeds were pledged as collateral for the Ingrid Facility. The Partnership and KNOT Shuttle Tankers AS were the sole guarantors.


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      Raquel Loan Facility

            In December 2014, Knutsen Shuttle Tankers 19 AS, the subsidiary owning theRaquel Knutsen, as the borrower, entered into a secured loan facility in an aggregate amount of $90.0 million (the "Raquel Facility"). The Raquel Facility is repayable in quarterly installments with a final balloon payment of $30.5 million due at maturity in March 2025. The Raquel Facility bears interest at an annual rate equal to LIBOR plus a margin of 2.0%. The facility is secured by a vessel mortgage on theIngridRaquel Knutsen. TheIngridRaquel Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the IngridRaquel Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors.

    The IngridRaquel Facility contains the following financial covenants:

      Market value of theIngrid Knutsen shall not be less than 125% of the outstanding balance under the Ingrid Facility;

    Positive working capital of the borrowerRaquel Knutsen shall not be less than 100% of the of the outstanding balance under the Raquel Facility for the first three years, and the Partnership;

    125% thereafter;

    Minimum liquidity of the Partnership of $17$15 million plus increments of $1 million for each additional vessel acquired by the Partnership in excess of eight vessels and $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract;

    and

    Minimum book equity ratio for the Partnership of 30%; and
    .

            

    Minimum EBITDA to interest ratio for the Partnership of 2.50.

    The IngridRaquel Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2015,2018, the borrower and the guarantors were in compliance with all covenants under this facility.

      $Tordis Loan Facility

            In April 2015, KNOT Shuttle Tankers 24 AS, the subsidiary owning theTordis Knutsen, as the borrower, entered into a secured loan facility (the "Tordis Facility"). As of the time of the acquisition of theTordis Knutsen on March 1, 2017, the aggregate amount outstanding under the facility was $114.4 million. The Tordis Facility is repayable in quarterly installments with a final balloon payment of $70.8 million due at maturity in November 2021. The Tordis Facility bears interest at an annual rate equal to LIBOR plus a margin of 1.9%. The facility is secured by a vessel mortgage on theTordis Knutsen. TheTordis Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the Tordis Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors.

            The Tordis Facility contains the following financial covenants:

      Aggregate market value of theTordis Knutsen, theVigdis Knutsen and theLena Knutsen shall not be less than 130% of the aggregate outstanding balance under the Tordis Facility, the Vigdis Facility and the Lena Facility at any time;

      Positive working capital of the borrower and the Partnership;

      Minimum liquidity of the Partnership of $15 million plus increments of $1.5 million for each owned vessel with less than 12 Million Seller’s Creditmonths remaining tenor on its employment contract up to 8 vessels and $1 million for each owned vessel with less than 12 months remaining tenor on its employment contract in excess of 8 vessels;

      Minimum book equity ratio for the Partnership of 30%; and

      Minimum EBITDA to interest ratio for the Partnership of 2.50.

            The Tordis Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default.


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    As part of financingDecember 31, 2018, the borrower and the guarantors were in compliance with all covenants under this facility.

      Vigdis Loan Facility

            In April 2015, KNOT Shuttle Tankers 25 AS, the subsidiary owning theVigdis Knutsen, as the borrower, entered into a secured loan facility (the "Vigdis Facility"). The Vigdis Facility is repayable in quarterly installments with a final balloon payment of $70.8 million due at maturity in February 2022. The Vigdis Facility bears interest at an annual rate equal to LIBOR plus a margin of 1.9%. The facility is secured by a vessel mortgage on theVigdis Knutsen. TheVigdis Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the purchaseVigdis Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors.

            The Vigdis Facility contains the following financial covenants:

      Aggregate market value of theDan CisneTordis Knutsen,, KNOT provided a $12.0 million seller’s credit (the “Seller’s Credit”), which was guaranteed by theVigdis Knutsen and theLena Knutsen shall not be less than 130% of the aggregate outstanding balance under the Tordis Facility, the Vigdis Facility and the Lena Facility at any time;

      Positive working capital of the borrower and the Partnership;

      Minimum liquidity of the Partnership hadof $15 million plus increments of $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract up to 8 vessels and $1 million for each owned vessel with less than 12 months remaining tenor on its employment contract in excess of 8 vessels;

      Minimum book equity ratio for the Partnership of 30%; and

      Minimum EBITDA to interest ratio for the Partnership of 2.50.

            The Vigdis Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a maturity datevessel and customary events of default. As of December 31, 2018, the borrower and the guarantors were in compliance with all covenants under this facility.

      Lena Loan Facility

            In April 2015, KNOT Shuttle Tankers 26 AS, the subsidiary owning theLena Knutsen, as the borrower, entered into a secured loan facility (the "Lena Facility"). The Lena Facility is repayable in quarterly installments with a final balloon payment of $68.6 million due at maturity in June 2022. The Lena Facility bears interest at an annual rate equal to LIBOR plus a margin of 1.9%. The facility is secured by a vessel mortgage on theLena Knutsen. TheLena Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the Lena Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors.

            The Lena Facility contains the following financial covenants:

      Aggregate market value of theTordis Knutsen, theVigdis Knutsen and theLena Knutsen shall not be less than 130% of the aggregate outstanding balance under the Tordis Facility, the Vigdis Facility and the Lena Facility at any time;

      Positive working capital of the borrower and the Partnership;

      Minimum liquidity of the Partnership of $15 million plus increments of $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract up to 8 vessels and $1 million for each owned vessel with less than 12 months remaining tenor on its employment contract in excess of 8 vessels;

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      Minimum book equity ratio for the Partnership of 30%; and

      Minimum EBITDA to interest ratio for the Partnership of 2.50.

            The Lena Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2018, the borrower and the guarantors were in compliance with all covenants under this facility.

      Brasil Loan Facility

            In June 2017, KNOT Shuttle Tankers 32 AS, the subsidiary owning theBrasil Knutsen, as the borrower, entered into a secured loan facility (the "Brasil Facility"). The Brasil Facility is repayable in quarterly installments with a final balloon payment of $40.0 million due at maturity in July 2022. The Brasil Facility bears interest at an annual rate equal to LIBOR plus a margin of 2.3%. The facility is secured by a vessel mortgage on theBrasil Knutsen. TheBrasil Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the Brasil Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors.

            The Brasil Facility contains the following financial covenants:

      Market value of theBrasil Knutsen shall not be less than 125% of the of the outstanding balance under the Brasil Facility for the first four years, and 135% thereafter;

      Positive working capital of the borrower and the Partnership;

      Minimum liquidity of the Partnership of $15 million plus increments of $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract up to a total of eight (8) vessels and $1 million for each owned vessel with less than 12 months remaining tenor on its employment contract up to a total of twelve (12) vessels;

      Minimum book equity ratio for the Partnership of 30%; and

      Minimum EBITDA to interest ratio for the Partnership of 2.50.

            The Brasil Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2018, the borrower and the guarantors were in compliance with all covenants under this facility.

      Anna Loan Facility

            In September 2016, KNOT Shuttle Tankers 30 AS, the subsidiary owning theAnna Knutsen, as the borrower, entered into a secured loan facility (the "Anna Facility"). The Anna Facility is repayable in quarterly installments with a final balloon payment of $57.1 million due at maturity in March 2022. The Anna Facility bears interest at an annual rate equal to LIBOR plus a margin of 2.0%. The facility is secured by a vessel mortgage on theAnna Knutsen. TheAnna Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the Anna Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors.

            The Anna Facility contains the following financial covenants:

      Market value of theAnna Knutsen shall not be less than 130% of the aggregate outstanding balance under the Anna Facility at any time;

      Positive working capital of the borrower and the Partnership;

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      Minimum liquidity of the Partnership of $15 million plus increments of $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract up to 8 vessels and $1 million for each owned vessel with less than 12 months remaining tenor on its employment contract in excess of 8 vessels;

      Minimum book equity ratio for the Partnership of 30%; and

      Minimum EBITDA to interest ratio for the Partnership of 2.50.

            The Anna Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2018, the borrower and the guarantors were in compliance with all covenants under this facility.

      $25 Million Revolving Credit Facility

            In August 2017, KNOT Shuttle Tankers AS entered into an unsecured revolving credit facility of $25 million with NTT Finance Corporation. The facility will mature in August 2019, and borebears interest at LIBOR plus a fixed margin of 4.5%. Accrued interest1.8% and has a commitment fee of 0.5% on the Seller’s Credit accumulated at the end of each six-month period and was capitalized. On June 15, 2015, the Partnership repaid the Seller’s Credit with aundrawn portion of the net proceeds from the June 2015 Offering.facility.

      Derivative Instruments and Hedging Activities

    We use derivative instruments to reduce the risks associated with fluctuations in interest rates. We have a portfolio of interest rate swap contracts that exchange or swap floating rate interest to fixed rates, which, from a financial perspective, hedges our obligations to make payments based on floating interest rates. As of December 31, 2015, our interest rate swap contracts economically fixed our2018, the Partnership's net exposure to floating interest rate exposurefluctuations on $410.0its outstanding debt was approximately $490.1 million based on total interest-bearing debt outstanding of floating$1,087.3 million, less interest rate debt, leaving $261.7swaps of $555.5 million, exposed to a floating rateless cash and cash equivalents of interest.$41.7 million. Our interest rate swap contracts mature between March 2018July 2020 and January 2024.August 2027. Under the terms of the interest rate swap agreements, we will receive from the counterparty interest on the notional amount based on three-month and six-month LIBOR and will pay to the counterparty a fixed rate. For the interest rate swap agreements above, we will pay to the counterparty a fixedweighted average interest rate ranging from 1.25% to 2.49%of 1.86%.

    We enter into foreign exchange forward contracts in order to manage our exposure to the risk of movements in foreign currency exchange rate fluctuations. As of December 31, 2015,2018, the total contract amount in foreign currency of our outstanding foreign exchange forward contracts that were entered into to economically hedge our outstanding future payments in currencies other than the U.S. Dollar was NOK 289.8244.2 million. We do not apply hedge accounting for derivative instruments.

    Critical Accounting Estimates

    The preparation of the Partnership’sPartnership's consolidated and combined carve-out financial statements requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and related disclosures about contingent assets and liabilities. We base these estimates and assumptions on historical experience and on various other information and assumptions that we believe to be reasonable. Our critical accounting estimates are important to the portrayal of both our financial condition and results of operations and require us to make subjective or complex assumptions or estimates about matters that are uncertain. Significant accounting policies are discussed in Note 2—Summary of Significant Accounting Policies in the consolidated and combined carve-out financial statements included in this Annual Report. We believe that the following are the critical accounting estimates used in the preparation of our Partnership’sPartnership's consolidated and combined carve-out financial statements. In addition, there are other items within the Partnership’sPartnership's consolidated and combined carve-out financial statements that require estimation.


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      Vessel Lives and Impairment

    Description        Description..    The carrying value of vessels and equipment represent its historical acquisition or construction cost, including capitalized interest, supervision and technical and delivery cost, net of accumulated depreciation and impairment loss, if any. Expenditures for subsequent conversions and major improvements are capitalized, provided that such costs increase the earnings capacity or improve the efficiency or safety of the vessels. We depreciate the original cost, less an estimated residual value, of our vessels on a straight-line basis over each vessel’svessel's estimated useful life. The carrying value of our vessels may not represent their market value at any point in time, because the market prices of second-hand vessels tend to fluctuate with changes in hire rates and the cost of newbuilds.

    We review vessels and equipment for impairment whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable, which occurs when the asset’s carrying value is greater than the future undiscounted cash flows the asset is expected to generate over its remaining useful life. For a vessel under charter, the discounted cash flows from that vessel may exceed its market value, as market values may assume the vessel is not employed on an existing charter. If the estimated future undiscounted cash flows of an asset exceed the asset’s carrying value, no impairment is recognized even though the fair value of the asset may be lower than its carrying value. If the estimated future undiscounted cash flows of an asset are less than the asset’s carrying value and the fair value of the asset is less than its carrying value, the asset is written down to its fair value. Fair value may be determined through various valuation techniques but is generally calculated as the net present value of estimated future cash flows.

    Our business model is to employ our vessels on fixed-rate charters with major energy companies. These charters typically have original terms between five to ten years in length. Consequently, while the market value of a vessel may decline below its carrying value, the carrying value of a vessel may still be recoverable based on the future undiscounted cash flows the vessel is expected to obtain from servicing its existing and future charters.

    Judgments and Uncertainties. Depreciation on our shuttle tankers is calculated using an estimated useful life of 25 years, commencing at the date the vessel was originally delivered from the shipyard. However, the actual life of a vessel may be different than the estimated useful life, with a shorter actual useful life resulting in an increase in the depreciation and potentially resulting in an impairment loss. The estimated useful life of our vessels takes into account design life, commercial considerations and regulatory restrictions. The carrying value of our vessels may not represent their market value at any point in time, because the market prices of second-hand vessels tend to fluctuate with changes in hire rates and the cost of newbuilds.

            We review vessels and equipment for impairment whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable, which occurs when the asset's carrying value is greater than the future undiscounted cash flows the asset is expected to generate over its remaining useful life. For a vessel under charter, the discounted cash flows from that vessel may exceed its market value, as market values may assume the vessel is not employed on an existing charter. If the estimated future undiscounted cash flows of an asset exceed the asset's carrying value, no impairment is recognized even though the fair value of the asset may be lower than its carrying value. If the estimated future undiscounted cash flows of an asset are less than the asset's carrying value and the fair value of the asset is less than its carrying value, the asset is written down to its fair value. Fair value may be determined through various valuation techniques but is generally calculated as the net present value of estimated future cash flows.

            Our business model is to employ our vessels on fixed-rate charters with major energy companies. These charters typically have original terms between five to ten years in length. Consequently, while the market value of a vessel may decline below its carrying value, the carrying value of a vessel may still be recoverable based on the future undiscounted cash flows the vessel is expected to obtain from servicing its existing and future charters.

            Judgments and Uncertainties.    Our estimates of future cash flows involve assumptions about future hire rates, vessel utilization, operating expenses, drydocking expenditures, vessel residual values and the remaining estimated life of our vessels. Our estimated hire rates are based on rates under existing vessel charters and market rates at which we expect we can re-charter our vessels. Our estimates of vessel utilization, including estimated off-hire time and the estimated amount of time our shuttle tankers may spend operating in the spot market when not being used in their capacity as shuttle tankers, are based on historical experience of KNOT and our projections of

    future shuttle tanker voyages. Our estimates of operating expenses and drydocking expenditures are based on historical operating and drydocking costs of KNOT and our expectations of future cost and operating requirements. Vessel residual values are a product of a vessel’svessel's lightweight tonnage and an estimated scrap rate. The remaining estimated lives of our vessels used in our estimates of future cash flows are consistent with those used in the calculation of depreciation. Certain assumptions relating to our estimates of future cash flows are more predictable by their nature in our experience, including estimated revenue under existing charter terms, ongoing operating costs and remaining vessel lives. Certain assumptions relating to our estimates of future cash flows require more discretion and are inherently less predictable, such as future hire rates beyond the firm period of existing charters and vessel residual values, due to factors such as the volatility in hire rates and vessel residual values. We believe that the assumptions used to estimate future cash flows of our vessels are reasonable at the


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    time they are made. We can make no assurances, however, as to whether our estimates of future cash flows, particularly future hire rates or vessel residual values, will be accurate.

    Effect If Actual Results Differ from AssumptionsAssumptions..    If we conclude that a vessel or equipment is impaired, we recognize a loss in an amount equal to the excess of the carrying value of the asset over its fair value at the date of impairment. The fair value at the date of the impairment becomes the new cost basis and will result in a lower depreciation expense than for periods before the vessel or equipment impairment.

      Goodwill

      Description. We allocate the cost of acquired companies to the identifiable tangible and intangible assets and liabilities acquired, with the remaining amount being classified as goodwill. Our future operating performance will be affected by the potential impairment charges related to goodwill. Accordingly, the allocation of purchase price to goodwill may significantly affect our future operating results. Goodwill is not amortized, but reviewed for impairment annually, or more frequently if impairment indicators arise. The process of evaluating the potential impairment of goodwill is highly subjective and requires significant judgment at many points during the analysis.

      Judgments and Uncertainties. The allocation of the purchase price of acquired companies requires management to make significant estimates and assumptions, including estimates of future cash flows expected to be generated by the acquired assets and the appropriate discount rate to value these cash flows. In addition, the process of evaluating the potential impairment of goodwill and intangible assets is highly subjective and requires significant judgment at many points during the analysis. We test goodwill for impairment using a two-step analysis, with the option of performing a qualitative assessment before performing the first step of the two-step analysis, whereby the carrying value of the reporting unit is compared to its fair value in the first step. If the carrying value of the reporting unit is greater than its fair value, the second step is performed, where the implied fair value of goodwill is compared to its carrying value. An impairment charge is recognized for the amount by which the carrying amount of goodwill exceeds its fair value. The fair value is estimated using the net present value of discounted cash flows of the reporting unit. The estimates and assumptions regarding expected future cash flows and appropriate discount rates are in part based upon existing contracts, future shuttle tanker rates, historical experience, financial forecasts and industry trends and conditions.

      Effect if Actual Results Differ from Assumptions.During the three months ended June 30, 2015, the Partnership concluded that indicators of impairment were present due to a significant reduction in the price of the Partnership’s common units during that quarter. Consequently, the Partnership performed an interim vessel and goodwill impairment analysis as of June 30, 2015 on its fleet, concluding that there was no impairment to the vessels’ values. However, the Partnership determined that the carrying value of the goodwill exceeded its fair value. The impairment charge relates mainly to capitalized goodwill which arose in 2008 when the Partnership’s predecessor acquired theWindsor Knutsen and three other vessels then under construction, in a transaction that was then accounted for as a step transaction. As a result, a goodwill impairment charge of $6.2 million was recognized for the year ended December 31, 2015. The fair value was determined using the present value of the expected future cash flows discounted at a rate equivalent to a market participant’s weighted average cost of capital. The estimates and assumptions regarding expected future cash flows and appropriate discount rates are in part based upon existing contracts, future shuttle tanker rates, historical experience, financial forecasts and industry trends and conditions. This non-cash impairment charge reduced the Partnership’s remaining goodwill balance to zero.

      Vessel Market Values

    In “—"—Vessel Lives and Impairment”Impairment" above, we discuss our policy for assessing impairment of the carrying value of our vessels. During the past few years, the market values of certain vessels in the worldwide fleet have experienced particular volatility, with substantial declines in many vessel classes. There is a future risk that the sale value of certain of our vessels could decline below those vessels’vessels' carrying value, even though we would not impair those vessels’vessels' carrying value under our accounting impairment policy, due to our belief that future undiscounted cash flows expected to be earned by such vessels over their operating lives would exceed such vessels’vessels' carrying value.

    In connection with monitoring compliance with our credit facilities and as a general business matter, we periodically monitor the market value of our vessels, including by obtaining various broker valuations as of specific dates. We generally do not include the impact of market fluctuations in vessel prices in our financial statements. We do, however, monitor our business and assets on a regular basis for potential asset impairment as described above. The total carrying value of our vessels was $1,193$1,767 million as of December 31, 2015.2018. With respect to the vessels, based on broker valuations as of December 31, 2015, and disregarding the charters attached to each of the vessels,2018 on a charter free basis, we believe the aggregate market value of these vessels was less than their aggregate carrying value as of that date. We believe the aggregate amount of this deficit as of December 31, 20152018 for the vessels was approximately $125$144 million. These vessels do, however, have long-term charters with fixed rates attached.charters contracts. We believe thatdid not identify any impairment indicators for our recoverable amount for each of these vessels exceeded the applicable carrying value as of December 31, 2015,2018, and accordingly, we have not performed an undiscounted cash flow test or recorded impairment charges even though the vessels have experienced a decline in charter free market value (i.e. disregarding the charters attached to each of the vessels).charges.

      Drydocking

    Description        Description..    We drydock each of our vessels periodically for inspection, repairs and maintenance and for any modifications to comply with industry certification or governmental requirements. For vessels operating on time charters, we capitalize the costs directly associated with the classification and regulatory requirements for inspection of the vessels, major repairs and improvements incurred during drydocking that increase the earnings capacity or improve the efficiency or safety of the vessels. Drydocking cost is depreciatedamortized on a straight-line basis over the period until the next planned drydocking takes place.drydocking. We expense costs related to routine repairs and maintenance performed during drydocking or as otherwise incurred. For vessels that are newly built or acquired, an element of the cost of the vessel is allocated initially to a drydock component and depreciatedamortized on a straight-line basis over the period until the next planned drydocking. When significant drydocking expenditures occur prior to the expiration of this period, we expense the remaining unamortized balance of the original drydocking cost in the month of the subsequent drydocking. For vessels operating on bareboat charters, the charterer bears the cost of any drydocking.

    Judgments and UncertaintiesUncertainties.. Depreciation    Amortization of capitalized drydock expenditures requires us to estimate the period of the next drydocking or estimated useful life of drydock expenditures. While we typically drydock our vessels every 60 months until the vessel is 15 years old and every 30 months thereafter, we may drydock the vessels at an earlier date.


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    Effect Ifif Actual Results Differ from AssumptionsAssumptions..    A change in our estimate of the useful life of a drydock will have a direct effect on our depreciationamortization of drydocking expenditures.

      Purchase Price Allocation, Including Goodwill and Intangible Assets

            Description.    We allocate the cost of acquired companies to the identifiable tangible and intangible assets and liabilities acquired, with the remaining amount being classified as goodwill. Certain intangible assets, such as above-market contracts, are being amortized over time. Our future operating performance will be affected by the amortization of intangible assets and potential impairment charges related to goodwill or intangible assets. Accordingly, the allocation of purchase price to intangible assets and goodwill may significantly affect our future operating results. Goodwill is not amortized, but reviewed for impairment annually, or more frequently if impairment indicators arise. The process of evaluating the potential impairment of goodwill is highly subjective and requires significant judgment at many points during the analysis. No goodwill or intangible assets arose as a result of acquisitions carried out for the years ended December 31, 2018, 2017 and 2016.

            Judgments and Uncertainties.    The allocation of the purchase price of acquired companies requires management to make significant estimates and assumptions, including estimates of future cash flows expected to be generated by the acquired assets and the appropriate discount rate to value these cash flows. In addition, the process of evaluating the potential impairment of goodwill and intangible assets is highly subjective and requires significant judgment at many points during the analysis. We test goodwill for impairment using a two-step analysis, with the option of performing a qualitative assessment before performing the first step of the two-step analysis, whereby the carrying value of the reporting unit is compared to its fair value in the first step. If the carrying value of the reporting unit is greater than its fair value, the second step is performed, where the implied fair value of goodwill is compared to its carrying value. An impairment charge is recognized for the amount by which the carrying amount of goodwill exceeds its fair value. The fair value is estimated using the net present value of discounted cash flows of the reporting unit. The estimates and assumptions regarding expected future cash flows and appropriate discount rates are in part based upon existing contracts, future shuttle tanker rates, historical experience, financial forecasts and industry trends and conditions.

      Taxes

    Description        Description..    We record a valuation allowance to reduce our deferred tax assets to the amount that is more likely than not to be realized.

    Judgments and UncertaintiesUncertainties..    We record a valuation allowance for deferred tax assets when it is more likely than not that some or all of the benefit from the deferred tax asset will not be realized. The future realization of deferred tax assets depends on the existence of sufficient taxable income of the appropriate character in the carry forward period. This analysis requires, among other things, the use of estimates and projections in determining future reversals of temporary differences and forecasts of future profitability and evaluating potential tax-planning strategies. The valuation allowances as of December 31, 20132018 were related to the financial loss carry forwards and other net deferred tax assets for Norwegian tonnage tax. In assessing the realizability of deferred tax assets, we considered all the positive and negative evidence available. Given our cumulative loss position for tonnage tax, we determined it was more likely than not that some of the benefit from the deferred tax assets would not be realized based on the weight of available evidence. As of December 31, 2014,2018, we determined that the deferred tax assets are likely to not be realized, and the booked value was, therefore, zero.

    Effect If Actual Results Differ from AssumptionsAssumptions..    If we determined that we were able to realize a net deferred tax asset in the future, in excess of the net recorded amount, an adjustment to decrease the valuation allowance related to the deferred tax assets would typically increase our net income (or decrease our loss) in the period such determination was made. Likewise, if we determined that we were not able to realize all or a part


    Table of our deferred tax asset in the future, an adjustment to increase the valuation allowance related to the deferred tax assets would typically Contents

    decrease our net income (or increase our loss) in the period such determination was made. As of December 31, 20152018 and 2014,2017, we had a valuation allowance for deferred tax assets of $10.3$17.0 million and $9.1$15.7 million, respectively.

      Recently IssuedAdopted Accounting Standards

      Accounting Pronouncements Not Yet Adopted

    In May 2014, the Financial Accounting Standards Board (FASB) andFASB issued ASU 2014-09,Revenue from Contracts with Customers (ASC 606), as subsequently updated by the International Accounting Standards Board (IASB) issued a comprehensiveFASB, which provides new authoritative guidance on the methods of revenue recognition and related disclosure requirements. This new standard that will supersede virtually all of thesupersedes existing revenue recognition requirements, including most industry-specific guidance. The new standard is intendedrequires a company to increase comparability across industries and jurisdictions. The single, globalrecognize revenue recognition model applies to most contacts with customers. Leases, insurance contracts, financial instruments, guarantees and certain non-monetary transactions are excluded from the scope of the guidance. Revenue will be recognized in a manner that depicts the transfer ofwhen it transfers goods or services to customers in an amount that reflects the consideration to which an entitythat the company expects to be entitled, subjectreceive for those goods or services. This update creates a five-step model and requires a company to certain limitations.exercise judgment when considering the terms of the contract(s) which include (i) identifying the contract(s) with the customer, (ii) identifying the separate performance obligation in the contract, (iii) determining the transaction price, (iv) allocating the transaction price to the separate performance obligations, and (v) recognizing revenue as each performance obligation is satisfied. Under the new standard, additional qualitative and quantitative disclosures are required. Effective January 1, 2018, the Partnership adopted the requirements ofASC 606 to new and existing contracts not yet completed as of January 1, 2018, using the modified retrospective approach where the cumulative effect of initially applying the standard is recorded as an adjustment to the opening balance of equity. The FASB deferred by one yearPartnership made an assessment on the effective datevarious implementation aspects of ASU 2014-09 and its newamendments, and since there are no changes to the timing or amount of revenue recognition standard for public entities reporting under U.S. GAAP. Therecognized, the Partnership has concluded that the effect of the implementation of this new revenue recognition standard will be effective for public entities for annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Public and nonpublic entities will be permittedcause no material cumulative effect to adopt the standard as early as the original public entity effective date (i.e., annual reporting periods beginning after December 15, 2016 and interim periods therein). Early adoption prior to that date is not permitted. The Partnership is assessing what impact, if any, the adoption of the guidance will have on itsPartnership's historical or future financial position, results of operations or cash flows.

            In January 2017, the FASB issued ASU 2017-01,Business Combinations: Clarifying the Definition of a Business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The Partnership adopted this ASU prospectively from January 1, 2018. As a result, this increases the likelihood that future dropdowns of Vessels may be considered the acquisition of an asset rather than a business combination.

            On March 1, 2018, the partnership's wholly owned subsidiary, KNOT Shuttle tankers AS, acquired KNOT's 100% interest in KNOT Shuttle Tankers 30 AS ("KNOT 30"), the company that owns and operates the Anna Knutsen. Following the adoption of ASU 2017-01,Business Combinations: Clarifying the Definition of a Business, the Partnership accounted for this acquisition as an acquisition of an asset. The cost of the group of assets acquired in the asset acquisition has been allocated to the individual assets acquired or liabilities assumed based on their relative fair values. See the Note 21—Acquisitions.

            In August 2016, the FASB issued ASU 2016-15,Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments. The new guidance clarifies how the predominance principle should be applied when cash receipts and cash payments have aspects of more than one class of cash flows. The Partnership adopted this ASU on January 1, 2018. The Partnership's adoption of this standard did not have a material impact on the Partnership's consolidated statement of cash flows or related disclosures.

    In August 2014,November 2016, the FASB issued PresentationASU 2016-18,Statement of Financial Statements – Going Concern (Subtopic 205-40), DisclosuresCash Flows: Restricted Cash, which requires that restricted cash be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts presented on the statement of Uncertainties about an Entity’s Abilitycash flows. The standard eliminates the presentation of transfers between cash and cash equivalents and restricted cash and restricted cash equivalents in the statement of cash flows. Additional disclosures are required for the nature of the restricted cash and restricted cash equivalents. The Partnership adopted this ASU on January 1, 2018 under a retrospective approach. The Partnership's adoption of this standard did not have a material impact on the Partnership's consolidated statement of cash flows or related disclosures.

            There are no other recent accounting pronouncements, whose adoption had a material impact on the consolidated financial statements in the current year.


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      New Accounting Standards Not Yet Adopted

            In February 2016, the FASB issued ASU 2016-02,Leases (ASC 842). The objective is to Continue as a Going Concern (Accounting Standards Update (ASU) -2014-15). ASU 2014-15 provides guidance in GAAP about management’s responsibilityestablish the principles that lessors and lessees shall apply to evaluate whether there are conditions and events that raise substantial doubtreport useful information to users of financial statements about the entity’s ability to continue asamount, timing and uncertainty of cash flows arising from a going concern within one year afterlease. The Partnership is the financial statements are issued (or available to be issued when applicable)lessor for its Vessels that operate on time charters and if so, disclose that fact. Managementbareboat charters. Accounting by a lessor is largely unchanged from the previous standard. The Partnership does not have any material leased assets. A lessee will be required to recognize in its balance sheet a lease liability to make lease payments and a right-of-use asset. The standard requires a modified retrospective transition method for all entities and the standard provides for optional practical expedients in implementing the standard under the modified retrospective approach.

            In July 2018, the FASB issued targeted improvements to the leasing guidance allowing for an additional optional transition method that allow entities to initially apply the new lease standard and its disclosures at the transition date and recognize a cumulative-effect adjustment to the opening balance of retained earnings. The Partnership has elected to use this evaluation for both annual and interim reporting periods, if applicable. Management also is required to evaluate and disclose whether its plans alleviate that doubt.optional transition approach. The standard is effective for annual periods after December 15, 2016 and interim periods within annual periods beginning after December 15, 2016. Early adoption is permitted. The Partnership is evaluating the effect of adopting this new accounting guidance. The Partnership does not expect the adoption of this standard to have a material impact on the consolidated and combined financial statements.

    In April 2015, FASB issued Interest – Imputation of Interest (Subtopic 835-30), Simplifying the Presentation of Debt Issuance Costs. ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability rather than as an asset. This will make the presentation of debt issuance costs consistent with the presentation of debt discounts or premiums. The guidance also addresses the long-standing conflict with the conceptual framework and improves consistency with International Financial Reporting Standards (IFRS).The recognition and measurement guidance for debt issuance costs is not affected. The standard does not address the presentation of costs that does not have an associated liability. The guidance is effective for annual and interim periods beginning after December 15, 2015. Early adoption is permitted. The Partnership has not yet adopted ASU 2015-03. The adoption of the new standard will have an impact on the Partnership’s balance sheets and reduce total assets and total liabilities and will be applied retrospectively.

    In June 2015, FASB issued Technical Corrections and Improvements (ASU 2015-10) to correct differences between original guidance and the ASC, clarify the guidance, correct references and make minor improvements affecting a variety of topics. While most of the amendments are not expected to have a significant effect on practice, some of them could change practice for some entities. Amendments that the FASB deemed more substantive are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. The other amendments are effective immediately. The Partnership is assessing what impact, if any, this guidance will have on its consolidated and combined financial position, results of operations and cash flows.

    In August 2015, FASB issued ASU 2015-15 to incorporate into the Accounting Standards Codification (ASC) an SEC staff announcement that the SEC staff will not object to an entity presenting the cost of securing a revolving line of credit as a deferred asset, regardless of whether a balance is outstanding. The announcement came in response to questions that arose after the FASB issued ASU 2015-03 Interest – Imputation of interest (Subtopic 835-30) – Simplifying the Presentation of Debt Issuance Costs. The standard, as issued, did not address revolving lines of credit, which may not have outstanding balances. An entity that repeatedly draws on a revolving credit facility and then repays the balance could present the cost as a deferred asset and reclassify all or a portion of it as a direct deduction from the liability whenever a balance is outstanding. However, the SEC staff’s announcement provides a less cumbersome alternative. Either way, the cost should be amortized over the term of the arrangement. The guidance is effective upon announcement by the SEC staff on June 18, 2015. The Partnership is assessing what impact, if any, the adoption of this guidance will have its financial position and it may have an impact on the balance sheets depending on whether the Partnership withdraws and use it revolving line of credit.

    In November 2015, FASB issued guidance on Income Taxes (Topic 740), Balance Sheet Classification of Deferred Taxes (ASU 2015-17). Companies are required to classify all deferred tax assets and liabilities as noncurrent on the balance sheet instead of separating deferred taxes into current and noncurrent amount. Also, companies will no longer allocate valuation allowances between current and noncurrent deferred tax assets because those allowances also will be classified as noncurrent. The FASB staff is performing additional research on companion proposal requiring companies to immediately recognize income tax expenses or benefits on intercompany transactions. Since early adoption of the guidance is permitted, companies can start applying it in interim and annual financial statements that have not yet been issued. For public business entities the guidance is effective for financial statements issued for annual periods beginning after December 15, 2016, and2018, including interim periods within those annual periods. ForThe Partnership will adopt ASC 842 and implement the revised guidance as of January 1, 2019. The Partnership will apply the package of practical expedients, but not the hindsight practical expedients since the use of hindsight practical expedient only impacts lease classification if the package of practical expedients is not elected. The Partnership will not reassess whether any expired or existing contracts are, or contain leases, will not reassess lease classification, and will not reassess initial direct costs for any existing leases. Additionally, the practical expedient of disregarding short-term leases for agreements with lease terms of 12 months or less as a lessee and the expedient of not separating lease components from non-lease components will be used for all other entities,classes of underlying assets in the guidance is effectivePartnership. Based upon assessments performed to date, the Partnership does not expect material effects on the accounting for existing leases applied in the consolidated financial statements issued for annual periods beginning after December 15, 2017, and interim periods within annual periods beginning after December 15, 2018. Companies can adoptwhere the guidance either prospectively or retrospectively. The Partnership is assessing what impact, if any, this guidancethe lessor. Under ASU 2016-02, the Partnership will have on its consolidatedrecognize a right-of-use asset and combined financial position.

    There are no other recent accounting pronouncements issued whose adoption would have a material impactlease liability on the Partnership’s combined consolidatedbalance sheet for certain leases where the Partnership is the lessee based on the present value of future minimum lease payments, whereas currently no right-of-use asset or lease liability is recognized. Based on the analysis performed by the Partnership to date, the right of use asset and combined carve-out financial statements in the current year or arelease liability to be recognized on January 1, 2019 is expected not to have a material impact on future years.be material.

      C. Research and Development, Patents and Licenses, Etc.

    Not applicable.

      D. Trend Information

    Please read “Item"Item 5. Operating and Financial Review and Prospects—Market Overview and Trends."

      E. Off-Balance Sheet Arrangements

    At December 31, 2015,2018, we did not have any off-balance sheet arrangements.


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      F. Tabular Disclosure of Contractual Obligations

    The following table summarizes our long-term contractual obligations as of December 31, 2015:2018:

     
     Payments Due by Period 
    (U.S. Dollars in thousands)
     Total Less than
    1 Year
     1 - 3
    Years
     4 - 5
    Years
     More than
    5 Years
     

    Long-term debt

     $1,087,347 $109,534 $243,302 $565,439 $169,072 

    Interest commitments on long-term debt(1)

      194,992  51,884  91,481  47,089  4,538 

    Interest rate swaps(2)

      (14,054) (2,706) (2,381) (4,741) (4,226)

    Total

     $1,268,285 $158,712 $332,402 $607,787 $169,384 

    (1)
    The interest commitments on long-term debt have been calculated assuming interest rates based on the 6-month LIBOR as of December 31, 2018, plus the applicable margin for all periods presented.

    (2)
    We have entered into interest rate swap contracts and under the terms of the interest rate swap contracts, we receive LIBOR-based variable interest and payments and make fixed interest rate payments. The interest commitments on interest rate swaps have been calculated assuming interest rates based on the 6-month LIBOR as of December 31, 2018.

       Payments Due by Period 
       Total   Less than
    1 Year
       1-3 Years   3-5 Years   More than
    5 Years
     
       (U.S. Dollars in thousands) 

    Long-term debt obligations (including interest) (1)

      $756,812    $73,319    $294,268    $296,255    $92,969  

    Total

      $756,812    $73,319    $294,268    $296,255    $92,969  

    (1)The long-term debt obligation has been calculated assuming interest rates based on the 6-month LIBOR as of December 31, 2015, plus the applicable margin for all periods presented.

      G. Safe Harbor

    Please read “Forward-Looking"Forward-Looking Statements."

    Item 6.Directors,6.    Directors, Senior Management and Employees

      A. Directors and Senior Management

    The following table provides information about our directors and executive officer. The business address for each of our directors and executive officer is 2 Queen’sQueen's Cross, Aberdeen, Aberdeenshire AB15 4YB, United Kingdom.

    Name
    AgePosition

    Name

    Trygve Seglem
     

    Age

    Position

    Trygve Seglem

    6568 Chairman of the Board of Directors

    John Costain

     5255 Chief Executive Officer and Chief Financial Officer

    Hans Petter Aas

     7073 Director, Chairman of the Audit Committee and Member of the Conflicts Committee

    Edward A. Waryas, Jr.

     6871 Director and Chairman of the Conflicts Committee and Member of the Audit Committee

    Andrew Beveridge

     6871 Director and Member of the Audit Committee

    Hiroaki Nishiyama

    Richard Beyer
     4950 Director

    Yoshiyuki Konuma

    Takuji Banno
     5552 Director

    Simon Bird

     5659 Director

    Trygve Seglem has served as Chairman of our board of directors since 2013. Mr. Seglem is the owner of TSSI, which is a 50% owner of KNOT. In addition, Mr. Seglem serves as a member of the board of directors of Nordisk Defence Club, a member of the board of directors of Koralfisk AS and a member of the board of directors of Assuranceforeningen SKULD (Gjensidig). Mr. Seglem began his career at Statoil at its inception and has been involved in the development of offshore loading tankers since 1975. In 1984, Mr. Seglem became the project director and a part owner, through TSSI, of the Knutsen Group. In September 2008, Mr. Seglem became the sole owner of the shuttle tanker operations of the Knutsen Companies. Mr. Seglem has a degree from Newcastle University.


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    Hans Petter Aas has served on our board of directors since 2013. Mr. Aas has had a long career as a banker in the international shipping and offshore markets and retired from his position as Global Head of the Shipping, Offshore and Logistics Division of DnB NOR Bank ASA in August 2008. Mr. Aas joined DnB NOR Bank ASA (then Bergen Bank) in 1989 and has previously worked for the Petroleum Division of the Norwegian Ministry of Industry and the Ministry of Energy, as well as for Vesta Insurance and Nevi Finance. Mr. Aas is alsowas the Chairman of the Boardboard of Directorsdirectors of Ship Finance International Limited and a director of Gearbulk Holding Ltd., Seadrill Ltd.,Limited, Golden Ocean Group Ltd.,Limited, Deep Sea Supply Plc.Plc, and Solvang ASA. Mr. Aas is currently a member of the board of directors of Gearbulk Holding Ltd. Mr. Aas has a degree from the Norwegian School of Economics and Business Administration.

    Edward A. Waryas, Jr. has served on our board of directors since 2013. He was Vice President-Marine Business Development for Lloyd’sLloyd's Register North America, Inc., where he was responsible for marine business development, account management, marketing and product development in North America. Prior to joining Lloyd’sLloyd's Register North America, Inc. in 2000, Mr. Waryas was President of the marine division of Clay Marketing & Public Relations, Inc., as well as President of Windward Maritime, LLC, a maritime consultancy company. In the 1990s, Mr. Waryas was Director, Business Development for Newport News Shipbuilding and Vice President of the Tenneco Foreign Sales Corporation. Prior to these positions, Mr. Waryas was a U.S. Coast Guard licensed engineer for Mobil Shipping & Transportation Company. While at Mobil Shipping & Transportation Company, Mr. Waryas served as chairman of the bow-loading coordination committee that developed the offshore loading system for the Statfjord Field off the coast of Norway. Mr. Waryas is a member of the North American panel for Intertanko and a former member of American Petroleum Institute’sInstitute's Marine Committee. Mr. Waryas has a Bachelor of Science, Marine Engineering, from the United States Merchant Marine Academy and a Master of Science, Transportation Management, from the State University of New York.

    Andrew Beveridge has served on our board of directors since 2013. Mr. Beveridge also serves as a director of KNOT UK, a position he has held since 2013. He is an entrepreneur with a track record of running capital-intensive businesses in the offshore service and shipping industries. From 2006 to 2008, Mr. Beveridge was the Deputy Managing Director and Business Development Manager of Fugro Rovtech Ltd, a shipping and remotely operated vehicle (“ROV”("ROV") company. From 1996 to 2006, Mr. Beveridge was the Managing Director of Rovtech Ltd., a company that specializes in the operation of underwater ROVs and the ships they deploy in the oil service and underwater cable-burial industries. Prior to 1996, Mr. Beveridge held various positions as the Managing Director, commercial director or manager of Slinsgby Engineering Ltd, HMB Subwork Ltd, Star Offshore Services Ltd, Cunard Steamship Co Ltd and Offshore Marine Ltd. Mr. Beveridge has an engineering degree from Trinity College, Cambridge.

            

    Hiroaki NishiyamaRichard Beyerhas served on our board of directors since August 2014.April 2017 when he was appointed by our general partner to replace Mr. Hiroaki Nishiyama as an appointed director. Mr. Beyer has served asbeen a member of the Managing Directorboard of directors of the Partnership's general partner and KNOT UK since 2013 and is a director of NYK Energy Transport (Atlantic)Group Europe Limited since April 2014. From April 1989 to March 2014, Mr. Nishiyama held various positions at Nippon Yusen Kabushiki Kaisha. Specifically, from April 2013 to March 2014, he served as the General Manager ofand NYK Energy Transport (Atlantic) Limited. From April 2011Before joining NYK Group in 2007, Mr. Beyer was a Senior Legal Adviser to March 2013, he servedBP Shipping Limited. Mr. Beyer was admitted as Manager of the Air Freighter Business Group. From October 2009 to March 2011, he served as Manager of the Corporate Planning Group. From April 2004 to September 2009, he served as Manager of the LNG Group. From April 1989 to March 2004, he served for or workedan English solicitor in the Container Trade Management Group, NYK Line (Europe) Limited, Sales and Marketing Europe Division, and Liner Coordination Division.1995.

    Yoshiyuki KonumaTakuji Banno has served on our board of directors since 2013.April 2016. Mr. KonumaBanno has served as the Senior General Manager, Offshore Business Group, Energy Division of Nippon Yusen Kabushiki KaishaNYK since April 2012. From April 20092011 to April 2012, he served as Senior General Manager, LNG Group, Energy Division.Director of Yusen Logistics (Singapore) Pte. Ltd. From JanuaryOctober 2006 to April 2009,2011, he was GeneralDirector of NYK Logistics (Asia) Pte. Ltd. From June 2002 to October 2006, he was Manager of NYK's LNG Group, Energy Division.Group. Mr. KonumaBanno joined Nippon Yusen Kabushiki KaishaNYK in April 1983. Since January 2012, he1990 and has served as a membermaster's degree in Business Administration from the University of the boardWisconsin-Madison.


    Table of directors of NYK Holding (Europe) B.V.Contents

    Simon Bird has served on our board of directors since May 2015. Mr. Bird is currently Director Humber for Associated Ports, a board role, having taken up this position in September 2015. Mr. Bird previously served as the Chief Executive of Bristol Port Company from 2000 until August 2015. From 1997 to 1999, Mr. Bird served as Commercial Director at Mersey Docks & Harbour Company plc. From 1995 to 1997 he was Joint Managing Director and Executive Director at International Water Ltd. Prior to 1995, Mr. Bird held various positions at British Aerospace plc, Thorn EMI plc, Philips, the Royal Navy and Her Majesty’sMajesty's Diplomatic Service. Mr. Bird is also a director of Bristol Bulk Company, the chairman of UK Major PortsParts Group, a vice chairman of Maritime UK and a member of the Strategic Advisory Group of the Royal Navy.

    John Costain has served as our Chief Executive Officer and Chief Financial Officer since June 1, 2015. From February 2013 until May 2015, Mr. Costain served as a member our board of directors. Since 2004, Mr. Costain has also been employed by Tankers (UK) Agencies Ltd, which acts as agent to Tankers International Pool,Ltd. serving as Finance Director since 2005. At Tankers (UK) Agencies Ltd, Mr. Costain is responsible for group reporting results under U.S. GAAP. Mr. Costain also serves on the board of directors of Tankers International Ltd. From 1991 to 2004, Mr. Costain held various positions at Euronav (UK) Agencies Ltd., including Finance Director and Managing Director of the offshore holding shipping company, as well as other positions in finance. Mr. Costain is a Chartered Accountant with a degree in Civil Engineering from Manchester University.

            On November 29, 2018, the Partnership announced that John Costain has decided to resign as Chief Executive Officer and Chief Financial Officer of the Partnership as of May 31, 2019 in order to pursue other interests. The Partnership's Board has approved the appointment of Gary Chapman as the new Chief Executive Officer and Chief Financial Officer of the Partnership commencing June 1, 2019. Mr. Chapman is a fellow of the Institute of Chartered Accountants in England and Wales and currently serves as the Chief Financial Officer of Biggin Hill Airport Ltd., a private company which owns a business aviation airport in London. From 2008 to July 2017, Mr. Chapman served as the finance director of NYK Energy Transport (Atlantic) Limited and from 2003 to 2008 as the European head of tax for the NYK Group Europe. Prior to 2003, Mr. Chapman served in various roles for KPMG. Mr. Chapman will continue to serve as the Chief Financial Officer of Biggin Hill Airport Ltd. concurrently with his role as Chief Executive Officer and Chief Financial Officer of the Partnership until December 1, 2019.

      B. Compensation

    Reimbursement of Expenses of Our General Partner

    Our general partner does not receive compensation from us for any services it provides on our behalf, although it is entitled to reimbursement for expenses incurred on our behalf. In addition, we pay certain fees to KNOT Management and KNOT Management Denmark pursuant to technical management agreements and management and administration agreements with our operating subsidiaries, and we reimburse KOAS UK, KOAS and KNOT Management for their reasonable costs and expenses (plus a 5% service fee) incurred in connection with provision of services pursuant to an administrative services agreement. Please read “Item"Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions."

    Executive Compensation

    We did not pay any compensation to our directors or our Chief Executive Officer and Chief Financial Officer or accrue any obligations with respect to management incentive or retirement benefits for our directors and our Chief Executive Officer and Chief Financial Officer prior to our IPO.        Pursuant to the administrative services agreement, John Costain, as an officer of KNOT UK, provides executive officer functions for our benefit. Mr. Costain is responsible for our day-to-day management subject to the direction of our board of directors. Under the administrative services agreement, we reimburse KNOT UK for its reasonable costs and expenses in connection with the provision of an executive officer and other administrative services to us. In addition, we pay KNOT UK


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    a management fee equal to 5% of its costs and expenses incurred on our behalf. For the year ended December 31, 2015,2018, we incurred total costs, expenses and fees under this agreement of approximately $1.9$1.4 million (which includes $1.2$0.9 million that was paid to KOAS, KOAS UK and KNOT Management for services they provided for us as subcontractors under the administrative services agreement). Our officers and employees and officers and employees of our subsidiaries and affiliates of KNOT and our general partner may participate in employee benefit plans and arrangements sponsored by KNOT, our general partner or their affiliates, including plans that may be established in the future.

    Mr. Costain entered into an employment agreement with KNOT UK effective June 1, 2015. Pursuant to the employment agreement, Mr. Costain serves as KNOT UK’sUK's Chief Executive Officer and Chief Financial Officer and is based in London. His annualized base salary is 200,000213,000 British Pounds. In addition, the employment agreement also provides for a discretionary annual bonus (as determined by the board of directors of KNOT UK), 30 working days of paid vacation per year (plus public holidays) and up to 13 weeks of paid sick leave per year. Mr. Costain’sCostain's employment may be terminated on 6 months’months' prior written notice by either Mr. Costain or KNOT UK. In addition, Mr. Costain’sCostain's employment agreement provides KNOT UK with the option to make a payment in lieu of notice or to place Mr. Costain on garden leave during his notice period. KNOT UK may also terminate the employment agreement with immediate effect upon certain specified “cause”"cause" events. The employment agreement includes post-termination restrictive covenants prohibiting Mr. Costain from competing or soliciting customers or employees for a period of 12 months after the termination of his employment. For the year ended December 31, 2015,2018, Mr. Costain received $179,185$286,225 in total compensation.

            In addition, an accrual of $nil$Nil for 20152018 was made to cover insurance and pension expenses for Mr. Costain.

    Arild Vik served        Mr. Chapman entered into an employment agreement with KNOT UK effective June 1, 2019. Pursuant to the employment agreement, Mr. Chapman will serve as theKNOT UK's Chief Executive Officer and Chief Financial Officer of the Partnership and KNOT UK from 2013 until June 1, 2015 pursuant to an employment agreement with KNOT UK dated March 28, 2013. Under the employment agreement, Mr. Vik’swill be based in London. His annualized base salary was 200,000will be 240,000 British Pounds. In addition, the employment agreement providedalso provides for a discretionary annual bonus (as determined by the board of directors of KNOT UK), the reimbursement of relocation expenses to the United Kingdom (up to a maximum of 30,000 British Pounds), payment by KNOT UK of housing costs in London, participation in other employment benefits in which other senior executives of KNOT UK participate, 6030 working days of paid vacation per year (plus public holidays) and up to 13 weeks of paid sick leave per year. Mr. Chapman's employment may be terminated on 6 months' prior written notice by either Mr. Chapman or KNOT UK. In addition, Mr. Chapman's employment agreement provides KNOT UK with the option to make a payment in lieu of notice or to place Mr. Chapman on garden leave during his notice period. KNOT UK may also terminate the employment agreement with immediate effect upon certain specified "cause" events. The employment agreement includes post-termination restrictive covenants prohibiting Mr. VikChapman from competing or soliciting customers or employees for a period of 12 months after the termination of his employment. ForThe employment agreement also provides for a transition period, whereby Mr. Chapman shall split his work time between the year ended December 31, 2015, Mr. Vik received $188,197 in total compensation. In addition, an accrual of $nil for 2015 was made to cover insurancePartnership and pension expenses for Mr. VikBiggin Hill Airport Ltd. until November 30, 2019 and receive a pro rata reduced salary during that period.

    Compensation of Directors

    Each director receives compensation for attending meetings of our board of directors, as well as committee meetings. During the year ended December 31, 20152018 each of our directors and our Chairman received aggregate compensation of $40,000 and members$50,000. Members of the audit and conflicts committeecommittees each received an aggregatea committee fee of $5,000.$12,000 and the Chairman of each such committee received a fee of $15,000 per year. In addition, each director is reimbursed for out-of-pocket expenses in connection with attending meetings of our board of directors or committees. Each director is fully indemnified by us for actions associated with being a director to the extent permitted under Marshall Islands law.


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      C. Board Practices

    General

    General

    Our partnership agreement provides that our general partner irrevocably delegates to our board of directors the authority to oversee and direct our operations, management and policies on an exclusive basis, and such delegation is binding on any successor general partner of the Partnership. Our general partner, KNOT Offshore Partners GP LLC, is wholly owned by KNOT. Our officers manage our day-to-day activities consistent with the policies and procedures adopted by our board of directors.

    Our current board of directors consists of seven members, Trygve Seglem, Hiroaki Nishiyama, Yoshiyuki Konuma,Richard Beyer, Takuji Banno, Hans Petter Aas, Edward A. Waryas, Jr., Andrew Beveridge and Simon Bird. Mr. Seglem, Mr. NishiyamaBeyer and Mr. KonumaBannno and have been appointed by our general partner. Mr. Aas, Mr. Waryas, Mr. Beveridge and Mr. BeveridgeBird were elected by our common unitholders. Mr. Bird was appointed by the remaining elected directors pursuant to our partnership agreement to replace John Costain upon his resignation from our board of directors in May 2015. Directors appointed by our general partner serve as directors for terms determined by our general partner. Directors elected by our common unitholders are divided into four classes serving staggered four-year terms. Mr. Waryas is designated as the Class I elected director and will serve until our annual meeting of unitholders in 2018, Mr. Beveridge is designated as the Class II elected director and will serve until our annual meeting of unitholders in 2019, Mr. Bird is designated as our Class III elected director and will serve until our annual meeting of unitholders in 2016, and2020, Mr. Aas is designated as our Class IV elected director and will serve until our annual meeting of unitholders in 2017.2021. Mr. Waryas is designated as the Class I elected director and will serve until our annual meeting of unitholders in 2022. At each annual meeting of unitholders, directors will be elected to succeed the class of director whose term has expired by a plurality of the votes of the common unitholders. Directors elected by our common unitholders will be nominated by our board of directors or by any limited partner or group of limited partners that holds at least 10% of the outstanding common units.

    Each outstanding common unit is entitled to one vote on matters subject to a vote of common unitholders. However, if at any time, any person or group owns beneficially more than 4.9% or more of any class of units then outstanding (excluding units held by Norwegian Resident Holders in the election of the elected directors as discussed below), any such units owned by that person or group in excess of 4.9% may not be voted (except for purposes of nominating a person for election to our board of directors). The voting rights of any such unitholders in excess of 4.9% will effectively be redistributed pro rata among the other common unitholders holding less than 4.9% of the voting power of such class of units. Our general partner, its affiliates and persons who acquire common units with the prior approval of our board of directors are not subject to this 4.9% limitation except with respect to voting their common units in the election of the elected directors.

    In addition, common unitholders that are Norwegian Resident Holders will not be eligible to vote in the election of the elected directors. The voting rights of any Norwegian Resident Holders will effectively be redistributed pro rata among the remaining common unitholders (subject to the limitation described above for 4.9% common unitholders) in these elections.

    Committees

    We have an audit committee that, among other things, reviews our external financial reporting, engages our external auditors and oversees our internal audit activities and procedures and the adequacy of our internal accounting controls. Our audit committee is comprised of Hans Petter Aas, Andrew Beveridge and Edward A. Waryas, Jr. Our board of directors has determined that each of Mr. Aas, Mr. Beveridge and Mr. Waryas satisfies the independence standards established by the NYSE. Mr. Aas qualifies as an “audit committee financial expert” for purposes of SEC rules and regulations.

    We also have a conflicts committee comprised of Mr. Waryas and Mr. Aas. The conflicts committee is available at our board of directors’ discretion to review specific matters that our board of directors believes may involve conflicts of interest. The conflicts committee may determine if the resolution of the conflict of interest is fair and reasonable to us. The members of the conflicts committee may not be officers or employees of us or directors, officers or employees of our general partner or its affiliates and must meet the independence standards established by the NYSE to serve on an audit committee of a board of directors and certain other requirements. Any matters approved by the conflicts committee will be conclusively deemed to be fair and reasonable to us, approved by all of our partners and not a breach by our directors, our general partner or its affiliates of any duties any of them may owe us or our unitholders.

    Exemptions from NYSE Corporate Governance Rules

    Because we qualify as a foreign private issuer under SEC rules, we are permitted to follow the corporate governance practices of the Marshall Islands (the jurisdiction in which we are organized) in lieu of certain of the NYSE corporate governance requirements that would otherwise be applicable to us. The NYSE rules do not require a listed company that is a foreign private issuer to have a board of directors that is comprised of a majority of independent directors. Under Marshall Islands law, we are not required to have a board of directors comprised of a majority of directors meeting the independence standards described in the NYSE rules. In addition, the NYSE rules do not require limited partnerships like us to have boards of directors comprised of a majority of independent directors. The NYSE rules do not require foreign private issuers or limited partnerships like us to establish a compensation committee or a nominating/corporate governance committee. Similarly, under Marshall Islands law, we are not required to have a compensation committee or a nominating/corporate governance committee. Accordingly, we do not have a compensation committee or a nominating/corporate governance committee. For a listing and further discussion of how our corporate governance practices differ from those required of U.S. companies listed on the NYSE, please read “Item 16G. Corporate Governance.”

    D. Employees

    Employees of affiliates of KNOT provide services to our subsidiaries pursuant to the technical management agreements, the management and administration agreements and the administrative services agreement. As of December 31, 2015, we directly employed one onshore employee and no seagoing employees. As of December 31, 2015, KNOT, through subsidiaries and affiliated companies, employed approximately 230 seagoing staff to serve on our vessels. Certain affiliates of KNOT, including KNOT Management, provide commercial and technical management services, including all necessary crew-related services, to our subsidiaries pursuant to the technical management agreements and the management and administration agreements. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions” and “Item 4. Information on the Partnership—Business Overview—Employees.”

    E. Unit Ownership

    As of March 18, 2016, there were no common units or subordinated units beneficially owned by our current directors or executive officer.

    Item 7. Major Unitholders and Related Party Transactions

    A. Major Unitholders

    The following table sets forth the beneficial ownership of our common units and subordinated units as of March 18, 2016 by each person that we know to beneficially own more than 5.0% of our common or subordinated units. The number of units beneficially owned by each person is determined under SEC rules and the information is not necessarily indicative of beneficial ownership for any other purpose:

       Common Units
    Beneficially Owned
      Subordinated Units
    Beneficially Owned
      

    Percentage of

    Total Common

    and

    Subordinated

    Units

    Beneficially

     

    Name of Beneficial Owner

      Number   Percent  Number   Percent  Owned 

    KNOT(1)

       90,368    0.5%  8,567,500     100  31.8

    Clearbridge Investments, LLC(2)

       1,500,751     8.1  —       —      5.5

    Goldman Sachs Asset Management(3)

       1,766,502     9.5  —       —      6.5

    Kayne Anderson Capital Advisors, L.P. and Richard A. Kayne(4)

       2,550,397     13.7  —       —      9.4

    Oppenheimer Funds, Inc. and Oppenheimer SteelPath MLP Income Fund (5)

       1,071,537     5.8  —       —      3.9

    Advisory Research, Inc. and Piper Jaffray
    Companies (6)

       1,465,055     7.9  —       —      5.4

    (1)KNOT is a joint venture between TSSI and NYK, each of which owns a 50% interest. Excludes the general partner interest held by our general partner, a wholly owned subsidiary of KNOT. Includes common units held by our general partner.
    (2)This information is based on the Schedule 13G/A filed by Clearbridge Investments, LLC on February 16, 2016.
    (3)Goldman Sachs Asset Management, L.P. and GS Investment Strategies, LLC (collectively, “Goldman Sachs Asset Management”) have shared voting power and shared dispositive power as to 1,766,502 units. This information is based on the Schedule 13G/A filed by Goldman Sachs Asset Management on February 8, 2016.
    (4)Kayne Anderson Capital Advisors, L.P. and Richard A. Kayne have shared voting power as to 1,341,375 units and shared dispositive power as to 2,550,397 units. This information is based on the Schedule 13G/A filed by Kayne Anderson Capital Advisors, L.P. and Richard A. Kayne on January 27, 2016.
    (5)Oppenheimer Funds, Inc. has shared voting power and shared dispositive power as to 1,071,537 units. Oppenheimer SteelPath MLP Income Fund has shared voting power and shared dispositive power as to 1,053,652 units, which represents 5.7% of common units outstanding and 3.9% of common and subordinated units outstanding. This information is based on the Schedule 13G/A filed by Oppenheimer Funds, Inc. and Oppenheimer SteelPath MLP Income Fund on February 4, 2016.
    (6)Advisory Research, Inc. has sole voting and dispositive power, and Piper Jaffray Companies has shared voting and dispositive power, as to 1,465,055 common units. This information is based on the Schedule 13G/A filed by Advisory Research, Inc. and Piper Jaffray Companies on February 18, 2016.

    Each outstanding common unit is entitled to one vote on matters subject to a vote of common unitholders. However, if at any time, any person or group owns beneficially more than 4.9% or more of any class of units then outstanding (excluding units held by Norwegian Resident Holders in the election of the elected directors as discussed below), any such units owned by that person or group in excess of 4.9% may not be voted (except for purposes of nominating a person for election to our board of directors). The voting rights of any such unitholders in excess of 4.9% will effectively be redistributed pro rata among the other common unitholders holding less than 4.9% of the voting power of such class of units. Our general partner, its affiliates and persons who acquire common units with the prior approval of our board of directors are not subject to this 4.9% limitation except with respect to voting their common units in the election of the elected directors.

    In addition, common unitholders that are Norwegian Resident Holders will not be eligible to vote in the election of the elected directors. The voting rights of any Norwegian Resident Holders will effectively be redistributed pro rata among the remaining common unitholders (subject to the limitation described above for 4.9% common unitholders) in these elections.

            The Series A Preferred Units do not have any right to nominate, appoint or elect any member of our board of directors unless distributions payable on the Series A Preferred Units have not been declared and paid for four consecutive quarters (a "Trigger Event"). Upon a Trigger Event, holders of Series A Preferred Units together with the holders of any other series of preferred units upon which like rights have been conferred and are exercisable, will have the right to replace one of the board members appointed by our general partner with a person nominated by such holders, such nominee to serve until all accrued and unpaid distributions on the preferred units have been paid.

    Committees

            We have an audit committee that, among other things, reviews our external financial reporting, engages our external auditors and oversees our internal audit activities and procedures and the


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    adequacy of our internal accounting controls. Our audit committee is comprised of Hans Petter Aas, Andrew Beveridge and Edward A. Waryas, Jr. Our board of directors has determined that each of Mr. Aas, Mr. Beveridge and Mr. Waryas satisfies the independence standards established by the NYSE. Mr. Aas qualifies as an "audit committee financial expert" for purposes of SEC rules and regulations.

            We also have a conflicts committee comprised of Mr. Waryas and Mr. Aas. The conflicts committee is available at our board of directors' discretion to review specific matters that our board of directors believes may involve conflicts of interest. The conflicts committee may determine if the resolution of the conflict of interest is fair and reasonable to us. The members of the conflicts committee may not be officers or employees of us or directors, officers or employees of our general partner or its affiliates and must meet the independence standards established by the NYSE to serve on an audit committee of a board of directors and certain other requirements. Any matters approved by the conflicts committee will be conclusively deemed to be fair and reasonable to us, approved by all of our partners and not a breach by our directors, our general partner or its affiliates of any duties any of them may owe us or our unitholders.

    Exemptions from NYSE Corporate Governance Rules

            Because we qualify as a foreign private issuer under SEC rules, we are permitted to follow the corporate governance practices of the Marshall Islands (the jurisdiction in which we are organized) in lieu of certain of the NYSE corporate governance requirements that would otherwise be applicable to us. The NYSE rules do not require a listed company that is a foreign private issuer to have a board of directors that is comprised of a majority of independent directors. Under Marshall Islands law, we are not required to have a board of directors comprised of a majority of directors meeting the independence standards described in the NYSE rules. In addition, the NYSE rules do not require limited partnerships like us to have boards of directors comprised of a majority of independent directors. The NYSE rules do not require foreign private issuers or limited partnerships like us to establish a compensation committee or a nominating/corporate governance committee.

            Similarly, under Marshall Islands law, we are not required to have a compensation committee or a nominating/corporate governance committee. Accordingly, we do not have a compensation committee or a nominating/corporate governance committee. For a listing and further discussion of how our corporate governance practices differ from those required of U.S. companies listed on the NYSE, please read "Item 16G. Corporate Governance."

      D. Employees

            Employees of affiliates of KNOT provide services to our subsidiaries pursuant to the technical management agreements, the management and administration agreements and the administrative services agreement. As of December 31, 2018, we directly employed one onshore employee and no seagoing employees. As of December 31, 2018, KNOT, through subsidiaries and affiliated companies, employed approximately 502 seagoing staff to serve on our vessels. Certain affiliates of KNOT, including KNOT Management, provide commercial and technical management services, including all necessary crew-related services, to our subsidiaries pursuant to the technical management agreements and the management and administration agreements. Please read "Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions" and "Item 4. Information on the Partnership—Business Overview—Employees."

      E. Unit Ownership

            Other than those common units in which Trygve Seglem may be deemed to share beneficial ownership, as of April 10, 2019, there were no common units beneficially owned by our current


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    directors or executive officer. Please read "Item 7. Major Unitholders and Related Party Transactions—Major Unitholders."

    Item 7.    Major Unitholders and Related Party Transactions

      A. Major Unitholders

            The following table sets forth the beneficial ownership of our common units as of April 10, 2019 by each person that we know to beneficially own more than 5.0% of our common units. The number of units beneficially owned by each person is determined under SEC rules and the information is not necessarily indicative of beneficial ownership for any other purpose:

     
     Common Units
    Beneficially Owned
     
    Name of Beneficial Owner
     Number Percent 

    KNOT(1)

      8,657,868  26.5%

    Kayne Anderson Capital Advisors, L.P. and Richard A. Kayne(2)

      1,828,663  5.6%

    Oppenheimer Funds Inc.(3)

      1,813,987  5.5%

    Advisory Research Inc.(4)

      1,664,975  5.1%

    (1)
    KNOT is a joint venture between TSSI and NYK Europe, each of which owns a 50% interest in KNOT. Excludes the general partner interest held by our general partner, a wholly owned subsidiary of KNOT. Includes common units held by our general partner. NYK Europe is a wholly owned subsidiary of NYK, a broadly owned Japanese public company. TSSI is a wholly owned subsidiary of Seglem Holding AS ("Seglem Holding"), of which 70% is owned by Trygve Seglem with the remainder owned by members of his immediate family. Accordingly, each of NYK Europe, NYK, TSSI, Seglem Holding and Trygve Seglem may be deemed to share beneficial ownership of the 8,657,868 common units held by KNOT and our general partner.

    (2)
    Kayne Anderson Capital Advisors, L.P. and Richard A. Kayne have shared voting power as to 1,602,011 units and shared dispositive power as to 1,828,663 units. This information is based on the Schedule 13G/A filed by Kayne Anderson Capital Advisors, L.P. and Richard A. Kayne on February 1, 2019.

    (3)
    Oppenheimer Funds Inc. has shared voting power and dispositive power, as to 1,813,987 common units. This information is based on the Schedule 13G/A filed by Oppenheimer Funds Inc. on January 24, 2019.

    (4)
    Advisory Research Inc. has shared voting power and dispositive power as to 1,664,975 common units. This information is based on the Schedule 13G/A filed by Advisory Research Inc. on February 13, 2019.

            Each outstanding common unit is entitled to one vote on matters subject to a vote of common unitholders. However, if at any time, any person or group owns beneficially more than 4.9% or more of any class of units then outstanding (excluding units held by Norwegian Resident Holders in the election of the elected directors as discussed below), any such units owned by that person or group in excess of 4.9% may not be voted (except for purposes of nominating a person for election to our board of directors). The voting rights of any such unitholders in excess of 4.9% will effectively be redistributed pro rata among the other common unitholders holding less than 4.9% of the voting power of such class of units. Our general partner, its affiliates and persons who acquire common units with the prior approval of our board of directors are not subject to this 4.9% limitation except with respect to voting their common units in the election of the elected directors.

            In addition, common unitholders that are Norwegian Resident Holders will not be eligible to vote in the election of the elected directors. The voting rights of any Norwegian Resident Holders will


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    effectively be redistributed pro rata among the remaining common unitholders (subject to the limitation described above for 4.9% common unitholders) in these elections.

            As of April 10, 2019, we had 3,750,000 Series A Preferred Units issued and outstanding, of which 2,083,333 units, 1,250,000 units and 416,677 units are held by OMP AY Preferred Limited, Pierfront Capital Mezzanine Fund Pte. Ltd. and Tortoise Direct Opportunities Fund, LP., respectively.

            The Series A Preferred Units have voting rights that are identical to the voting rights of our common units, except they do not have any right to nominate, appoint or elect any member of our board of directors, except upon a Trigger Event. Upon a Trigger Event, holders of Series A Preferred Units together with the holders of any other series of preferred units upon which like rights have been conferred and are exercisable, will have the right to replace one of the board members appointed by our general partner with a person nominated by such holders, such nominee to serve until all accrued and unpaid distributions on the preferred units have been paid. The Series A Preferred Units are entitled to vote with our common units as a single class, so that the Series A Preferred Units are entitled to one vote for each common unit into which the Series A Preferred Units are convertible at the time of voting. The 4.9% limitation described above applies to the holders of the Series A Preferred Units with respect to the voting of the Series A Preferred Units on an as-converted basis with the common units.

    KNOT exercises influence over the Partnership through our general partner, a wholly owned subsidiary of KNOT, which in its sole discretion appoints three directors to our board of directors. Please read “Item"Item 6. Directors, Senior Management and Employees—Board Practices." KNOT also exercises influence over the Partnership through its ownership of all of our subordinated units. At the end of the subordination period, assuming no additional issuances of common units and no additional repurchases under the common unit repurchase program, KNOT will own 31.8%26.5% of our common units as of April 10, 2019.

      B. Related Party Transactions

    From time to time we have entered into agreements and have consummated transactions with certain related parties. We may enter into related party transactions from time to time in the future. In connection with our IPO, we established a conflicts committee, comprised entirely of independent directors, which must approve all proposed material related party transactions. The related party transactions that we have entered into or were party to since January 1, 20132016 are discussed below.

    Omnibus Agreement

    Upon the closing of our IPO, we entered into an Omnibus Agreement with KNOT, our general partner and certain of our other subsidiaries. The following discussion describes certain provisions of the Omnibus Agreement.

      Noncompetition

    Pursuant to the Omnibus Agreement, KNOT agreed, and caused its controlled affiliates (other than us, our general partner and our subsidiaries) to agree, not to acquire, own, operate or charter any shuttle tanker operating under a charter for five or more years. For purposes of this section, we refer to these vessels, together with any related charters, as “Five-Year Vessels”"Five-Year Vessels" and to all other shuttle tankers, together with any related charters, as “Non-Five-Year"Non-Five-Year Vessels." The restrictions in this paragraph do not prevent KNOT or any of its controlled affiliates (other than us and our subsidiaries) from:

      (1)
      acquiring, owning, operating or chartering Non-Five-Year Vessels;

      (2)
      acquiring one or more Five-Year Vessels if KNOT promptly offers to sell the vessel to us for the acquisition price plus any administrative costs (including re-flagging and reasonable legal costs) associated with the transfer to us at the time of the acquisition;

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      (3)
      putting a Non-Five-Year Vessel under charter for five or more years if KNOT offers to sell the vessel to us for fair market value (x) promptly after the time it becomes a Five-Year Vessel and (y) at each renewal or extension of that charter for five or more years;

      (4)
      acquiring one or more Five-Year Vessels as part of the acquisition of a controlling interest in a business or package of assets and owning, operating or chartering those vessels; provided, however, that:

      (a)
      if less than a majority of the value of the business or assets acquired is attributable to Five-Year Vessels, as determined in good faith by KNOT's board of directors, KNOT must offer to sell such vessels to us for their fair market value plus any additional tax or other similar costs that KNOT incurs in connection with the acquisition and the transfer of such vessels to us separate from the acquired business; and

      (b)
      if a majority or more of the value of the business or assets acquired is attributable to Five-Year Vessels, as determined in good faith by KNOT's board of directors, KNOT must notify us of the proposed acquisition in advance. Not later than 30 days following receipt of such notice, we will notify KNOT if we wish to acquire such vessels in cooperation and simultaneously with KNOT acquiring the Non-Five-Year Vessels. If we do not notify KNOT of our intent to pursue the acquisition within 30 days, KNOT may proceed with the acquisition and then offer to sell such vessels to us as provided in paragraph (1)(a) above;

      (5)
      acquiring up to a 9.9% equity ownership, voting or profit participation interest in any company, business or pool of assets;

      (6)
      acquiring, owning, operating or chartering any Five-Year Vessel if we do not fulfill our obligation to purchase such vessel in accordance with the terms of any existing or future agreement;

      (7)
      acquiring, owning, operating or chartering a Five-Year Vessel subject to the offers to us described in paragraphs (2), (3) and (4) above pending our determination whether to accept such offers and pending the closing of any offers we accept;

      (8)
      providing ship management services relating to any vessel;

      (9)
      owning or operating any Five-Year Vessel that KNOT owned as of April 15, 2013 and that was not part of our initial fleet as of such date; or

      (10)
      acquiring, owning, operating or chartering a Five-Year Vessel if we have previously advised KNOT that we consent to such acquisition, ownership, operation or charter.

            

    (1)acquiring, owning, operating or chartering Non-Five-Year Vessels;

    (2)acquiring one or more Five-Year Vessels if KNOT promptly offers to sell the vessel to us for the acquisition price plus any administrative costs (including re-flagging and reasonable legal costs) associated with the transfer to us at the time of the acquisition;

    (3)putting a Non-Five-Year Vessel under charter for five or more years if KNOT offers to sell the vessel to us for fair market value (x) promptly after the time it becomes a Five-Year Vessel and (y) at each renewal or extension of that charter for five or more years;

    (4)acquiring one or more Five-Year Vessels as part of the acquisition of a controlling interest in a business or package of assets and owning, operating or chartering those vessels; provided, however, that:

    (a)if less than a majority of the value of the business or assets acquired is attributable to Five-Year Vessels, as determined in good faith by KNOT’s board of directors, KNOT must offer to sell such vessels to us for their fair market value plus any additional tax or other similar costs that KNOT incurs in connection with the acquisition and the transfer of such vessels to us separate from the acquired business; and

    (b)if a majority or more of the value of the business or assets acquired is attributable to Five-Year Vessels, as determined in good faith by KNOT’s board of directors, KNOT must notify us of the proposed acquisition in advance. Not later than 30 days following receipt of such notice, we will notify KNOT if we wish to acquire such vessels in cooperation and simultaneously with KNOT acquiring the Non-Five-Year Vessels. If we do not notify KNOT of our intent to pursue the acquisition within 30 days, KNOT may proceed with the acquisition and then offer to sell such vessels to us as provided in paragraph (1)(a) above;

    (5)acquiring up to a 9.9% equity ownership, voting or profit participation interest in any company, business or pool of assets;

    (6)acquiring, owning, operating or chartering any Five-Year Vessel if we do not fulfill our obligation to purchase such vessel in accordance with the terms of any existing or future agreement;

    (7)acquiring, owning, operating or chartering a Five-Year Vessel subject to the offers to us described in paragraphs (2), (3) and (4) above pending our determination whether to accept such offers and pending the closing of any offers we accept;

    (8)providing ship management services relating to any vessel;

    (9)owning or operating any Five-Year Vessel that KNOT owned as of April 15, 2013 and that was not part of our initial fleet as of such date; or

    (10)acquiring, owning, operating or chartering a Five-Year Vessel if we have previously advised KNOT that we consent to such acquisition, ownership, operation or charter.

    If KNOT or any of its controlled affiliates (other than us or our subsidiaries) acquires, owns, operates or charters Five-Year Vessels pursuant to any of the exceptions described above, it may not subsequently expand that portion of its business other than pursuant to those exceptions. However, such Five-Year Vessels could eventually compete with our vessels upon their re-chartering.

    In addition, pursuant to the Omnibus Agreement, we agree, and cause our subsidiaries to agree, to acquire, own, operate or charter Five-Year Vessels only. The restrictions in this paragraph do not:

      (1)
      prevent us from owning, operating or chartering any Non-Five-Year Vessel that was previously a Five-Year Vessel while owned by us;

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      (2)
      prevent us or any of our subsidiaries from acquiring Non-Five-Year Vessels as part of the acquisition of a controlling interest in a business or package of assets and owning, operating or chartering those vessels; provided, however, that:

      (a)
      if less than a majority of the value of the business or assets acquired is attributable to Non-Five-Year Vessels, as determined in good faith by us, we must offer to sell such vessels to KNOT for their fair market value plus any additional tax or other similar costs that we incur in connection with the acquisition and the transfer of such vessels to KNOT separate from the acquired business; and

      (b)
      if a majority or more of the value of the business or assets acquired is attributable to Non-Five-Year Vessels, as determined in good faith by us, we must notify KNOT of the proposed acquisition in advance. Not later than 30 days following receipt of such notice, KNOT must notify us if it wishes to acquire the Non-Five-Year Vessels in cooperation and simultaneously with us acquiring the Five-Year Vessels. If KNOT does not notify us of its intent to pursue the acquisition within 30 days, we may proceed with the acquisition and then offer to sell such vessels to KNOT as provided in paragraph (2)(a) above;

      (3)
      prevent us or any of our subsidiaries from acquiring, owning, operating or chartering any Non-Five-Year Vessels subject to the offer to KNOT described in paragraph (2) above, pending its determination whether to accept such offer and pending the closing of any offer it accepts; or

      (4)
      prevent us or any of our subsidiaries from acquiring, owning, operating or chartering Non-Five-Year Vessels if KNOT has previously advised us that it consents to such acquisition, ownership, operation or charter.

            

    (1)prevent us from owning, operating or chartering any Non-Five-Year Vessel that was previously a Five-Year Vessel while owned by us;

    (2)prevent us or any of our subsidiaries from acquiring Non-Five-Year Vessels as part of the acquisition of a controlling interest in a business or package of assets and owning, operating or chartering those vessels; provided, however, that:

    (a)if less than a majority of the value of the business or assets acquired is attributable to Non-Five-Year Vessels, as determined in good faith by us, we must offer to sell such vessels to KNOT for their fair market value plus any additional tax or other similar costs that we incur in connection with the acquisition and the transfer of such vessels to KNOT separate from the acquired business; and

    (b)if a majority or more of the value of the business or assets acquired is attributable to Non-Five-Year Vessels, as determined in good faith by us, we must notify KNOT of the proposed acquisition in advance. Not later than 30 days following receipt of such notice, KNOT must notify us if it wishes to acquire the Non-Five-Year Vessels in cooperation and simultaneously with us acquiring the Five-Year Vessels. If KNOT does not notify us of its intent to pursue the acquisition within 30 days, we may proceed with the acquisition and then offer to sell such vessels to KNOT as provided in paragraph (2)(a) above;

    (3)prevent us or any of our subsidiaries from acquiring, owning, operating or chartering any Non-Five-Year Vessels subject to the offer to KNOT described in paragraph (2) above, pending its determination whether to accept such offer and pending the closing of any offer it accepts; or

    (4)prevent us or any of our subsidiaries from acquiring, owning, operating or chartering Non-Five-Year Vessels if KNOT has previously advised us that it consents to such acquisition, ownership, operation or charter.

    If we or any of our subsidiaries acquires, owns, operates or charters Non-Five-Year Vessels pursuant to any of the exceptions described above, neither we nor such subsidiary may subsequently expand that portion of our business other than pursuant to those exceptions.

    Upon a change of control of us or our general partner, the noncompetition provisions of the Omnibus Agreement terminate immediately. Upon a change of control of KNOT, the noncompetition provisions of the Omnibus Agreement applicable to KNOT terminate at the time that is the later of the date of the change of control and the date on which all of our outstanding subordinated units have converted to common units.control. On the date on which a majority of our directors ceases to consist of directors that were (1) appointed by our general partner prior to our first annual meeting of unitholders and (2) recommended for election by a majority of our appointed directors, the noncompetition provisions applicable to KNOT terminate immediately.

      Shuttle Tanker Purchase Options

      Pursuant to the Omnibus Agreement, we have the right to purchase theRaquel Knutsen from KNOT at a purchase price to be agreed upon by us and KNOT, at any time within 24 months after KNOT notifies our board of directors of its acceptance by its charterer. If we and KNOT are unable to agree upon the fair market value of theRaquel Knutsen, the fair market values will be determined by a mutually acceptable investment banking firm, ship broker or other expert advisor, and we have the right, but not the obligation, to purchase the vessel at such price.

      On the date on which a majority of our directors ceases to consist of directors that were (1) appointed by our general partner prior to our first annual meeting of unitholders and (2) recommended for election by a majority of our appointed directors, the shuttle tanker purchase options terminate immediately.

      Rights of First Offer on Shuttle Tankers

    Pursuant to the Omnibus Agreement, we and our subsidiaries granted to KNOT a right of first offer on any proposed sale, transfer or other disposition of any Five-Year Vessels or Non-Five-Year Vessels owned by us. Pursuant to the Omnibus Agreement, KNOT agreed, and caused its subsidiaries to agree, to grant a similar right of first offer to us for any Five-Year Vessels they might own. These rights of first offer do not apply to a (1) sale, transfer or other disposition of vessels between any affiliated subsidiaries or pursuant to the terms of any current or future charter or other agreement with a charterparty or (2) merger with or into, or sale of substantially all of the assets to, an unaffiliated third party.

    Prior to engaging in any negotiation regarding any vessel disposition with respect to a Five-Year Vessel with an unaffiliated third party or any Non-Five-Year Vessel, we or KNOT, as the case may be, will deliver a written notice to the other relevant party setting forth the material terms and conditions of the proposed transaction. During the 30-day period after the delivery of such notice, we and KNOT, as the case may be, will negotiate in good faith to reach an agreement on the transaction. If we do not


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    reach an agreement within such 30-day period, we or KNOT, as the case may be, will be able within the next 180 calendar days to sell, transfer, dispose or re-charter the vessel to a third party (or to agree in writing to undertake such transaction with a third party) on terms generally no less favorable to us or KNOT, as the case may be, than those offered pursuant to the written notice.

    Upon a change of control of us or our general partner, the right-of-first-offer provisions of the Omnibus Agreement terminate immediately. Upon a change of control of KNOT, the right-of-first-offer provisions applicable to KNOT pursuant to the Omnibus Agreement terminate at the time that is the later of the date of the change of control and the date on which all of our outstanding subordinated units have converted to common units.control. On the date on which a majority of our directors ceases to consist of directors that were (1) appointed by our general partner prior to our first annual meeting of unitholders and (2) recommended for election by a majority of our appointed directors, the provisions related to the rights of first offer granted to us by KNOT terminate immediately.

      Indemnification

    Pursuant to the Omnibus Agreement, KNOT indemnifiesindemnified us until April 15, 2018 (and KNOT indemnifies us for a period of at least three years after our purchase of theCarmen Knutsen,theHilda Knutsen, theTorill Knutsen, theIngrid Knutsen and theRaquel Knutsen, as applicable) against certain environmental and toxic tort liabilities with respect to the assets contributed or sold to us to the extent arising prior to the time they were contributed or sold to us. Liabilities resulting from a change in law after the closing of our IPO are excluded from the environmental indemnity. There is an aggregate cap of $5 million on the amount of indemnity coverage provided by KNOT for environmental and toxic tort liabilities. No claim may be made unless the aggregate U.S. Dollar amount of all claims exceeds $500,000, in which case KNOT is liable for claims only to the extent such aggregate amount exceeds $500,000.

    KNOT also indemnifies us for liabilities related to:

    certain defects in title to the assets contributed or sold to us and any failure to obtain, prior to the time they were contributed to us, certain consents and permits necessary to conduct our business, which liabilities arise before April 15, 2018 (or, in the case of theCarmen Knutsen, theHilda Knutsen, theTorill Knutsen, theIngrid Knutsen and theRaquel Knutsen, within three years after our purchase of theCarmen Knutsen, theHilda Knutsen, theTorill Knutsen, theIngrid Knutsen and theRaquel Knutsen, as applicable); and

      certain defects in title to the assets contributed or sold to us and any failure to obtain, prior to the time they were contributed to us, certain consents and permits necessary to conduct our business, which liabilities arose before April 15, 2018 (or, in the case of theHilda Knutsen, theTorill Knutsen, theIngrid Knutsen and theRaquel Knutsen, within three years after our purchase of theHilda Knutsen, theTorill Knutsen, theIngrid Knutsen and theRaquel Knutsen, as applicable); and

      certain tax liabilities attributable to the operation of the assets contributed or sold to us prior to the time they were contributed or sold.

      Amendments

    The Omnibus Agreement may not be amended without the prior approval of the conflicts committee of our board of directors if the proposed amendment will, in the reasonable discretion of our board of directors, adversely affect holders of our common units.

      Guarantees Relating to the Bodil Knutsen and the Windsor Knutsen

    If at any time until April 15, 2018, theBodil Knutsen is was not receiving from any charterer a hire rate equal to or greater than the hire rate payable under the initialBodil Knutsen charter, then KNOT was required to pay us such hire rate that would have been in effect and payable under the initialBodil Knutsen charter; provided, however, that in the event that, if at any time until April 15, 2018, theBodil Knutsen was chartered under a charter other than the initialBodil Knutsen charter and the hire rate being paid under such charter was lower than the hire rate that would have been in effect and payable under the initialBodil Knutsen charter during any such period, then KNOT was required to pay us the difference between the hire rate that would have been in effect and payable under the initialBodil


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    Knutsen charter during such period and the hire rate then in effect and payable under such other charter.

            If at any time until April 15, 2018, theWindsor Knutsen was not receiving from any charterer a hire rate that is equal to or greater than the hire rate payable under the initialBodilWindsor Knutsen charter, then KNOT shallwas required to pay us such hire rate that would have been in effect and payable under the initialBodilWindsor Knutsen charter; provided, however, that in the event that, if at any time until April 15, 2018, theBodilWindsor Knutsen is was chartered under a charter other than the initialBodilWindsor Knutsen charter and the hire rate being paid under such charter iswas lower than the hire rate that would have been in effect and payable under the initialBodilWindsor Knutsen charter during any such period, then KNOT shallwas required to pay us the difference between the hire rate that would have been in effect and payable under the initialBodilWindsor Knutsen charter during such period and the hire rate that is then in effect and payable under such other charter.

    If at any time until April 15, 2018, theWindsor Knutsen is not receiving from any charterer a hire rate that is equal to or greater than the hire rate payable under the initialWindsor Knutsen charter, then KNOT shall pay us such hire rate that would have been in effect and payable under the initialWindsor Knutsen charter; provided, however, that in the event that, if at any time until April 15, 2018, theWindsor Knutsen is chartered under a charter other than the initialWindsor Knutsen charter and the hire rate being paid under such charter is lower than the hire rate that would have been in effect and payable under the initialWindsor Knutsen charter during any such period, then KNOT shall pay us the difference between the hire rate that would have been in effect and payable under the initialWindsor Knutsen charter during such period and the hire rate that is then in effect and payable under such other charter; provided, further, that the hire rate that would have been in effect and payable under the initialWindsor Knutsen charter during the period between the final termination date of the initialWindsor Knutsen charter (assuming that all extension options thereunder would have been exercised) and the last day of the five-year period following the closing date of our IPO shallwas be deemed to have been the hire rate that would have been in effect and payable during the last option extension period under the initialWindsor Knutsen charter (assuming that all extension options thereunder would have been exercised).

    Windsor Knutsen Time Charter with Knutsen Shuttle Tankers Pool AS

    In order to comply with its obligations under        On December 17, 2018, our subsidiary that owns the Omnibus Agreement, in July 2014,Windsor Knutsen, KNOT Shuttle Tankers 18 AS, entered into a time charter forcontract with Knutsen Shuttle Tankers Pool AS, a wholly owned subsidiary of KNOT. Under the time charter contract with Knutsen Shuttle Tankers Pool AS, theWindsor Knutsen at a rate of hire that would have been in effect will operate on the same terms as its existing time charter contract with Shell during the option10 to 12 month period that the time charter contract with Shell is suspended. The suspension period under the initialWindsor Knutsen time charter. This charter expired when the new BG Group time charter for theWindsor Knutsencontract with Shell commenced in October of 2015.March 4, 2019.

    Administrative Services Agreement

    Effective as of February 26, 2013, in connection with our IPO, we entered into an administrative services agreement with KNOT UK, pursuant to which KNOT UK provides certain management and administrative services to us. The agreement hashad an initial term of five years. The services provided under the administrative services agreement are provided in a diligent manner, as we may reasonably direct. KNOT UK is permitted to subcontract certain of the administrative services provided under this agreement to KOAS UK and KOAS, each of which is a wholly owned subsidiary of TSSI and KNOT Management. On May 7, 2015, we entered into an amendment to the administrative services agreement, which allows KNOT UK to also subcontract administrative services to KNOT Management. Effective as of February 26, 2018, we entered into a second amendment to the administrative services agreement extending the term of the agreement indefinitely.

    The administrative services agreement may be terminated prior to the end of its term by usany party upon 90 days’days' notice for any reason in the sole discretion of our board of directors. In addition, the administrative services agreement may be terminated by KNOT UK upon 90 days’ notice if:

    there is a change of control of us or our general partner;

    a receiver is appointed for all or substantially all of our property;

    an order is made to wind up our partnership;

    a final judgment or order that materially and adversely affects our ability to perform the agreement is obtained or entered and not vacated or discharged; or

    we make a general assignment for the benefit of our creditors, file a petition in bankruptcy or liquidation or commence any reorganization proceedings.

    reason. Under the administrative services agreement, John Costain, as an officer of KNOT UK, provides executive officer functions for our benefit. Mr. Costain is responsible for our day-to-day management subject to the direction of our board of directors. Our board of directors has the ability to terminate the arrangement with KNOT UK regarding the provision of executive officer services to us with respect to Mr. Costain at any time in its sole discretion. Beginning on June 1, 2019, Gary Chapman will provide executive officer services for our benefit as an officer of KNOT UK under the administrative services agreement. Mr. Chapman will be responsible for our day-to-day management subject to the direction of our board of directors. Our board of directors will have the ability to terminate the agreement with KNOT UK regarding the provision of executive officer services to us with respect to Mr. Chapman at any time in its sole discretion.


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    The administrative services provided by KNOT UK include:

    commercial management services: assistance with our commercial management and the execution of our business strategies, although KNOT UK does not make any strategic decisions;

    bookkeeping, audit and accounting services: assistance with the maintenance of our corporate books and records, assistance with the preparation of our tax returns and arranging for the provision of audit and accounting services;

    legal and insurance services: arranging for the provision of legal, insurance and other professional services and maintaining our existence and good standing in necessary jurisdictions;

    administrative and clerical services: assistance with office space, arranging meetings for our common unitholders pursuant to our partnership agreement, arranging the provision of IT services, providing all administrative services required for subsequent debt and equity financings and attending to all other administrative matters necessary to ensure the professional management of our business;

    banking and financial services: providing cash management including assistance with preparation of budgets, overseeing banking services and bank accounts, arranging for the deposit of funds and monitoring and maintaining compliance therewith;

    advisory services: assistance in complying with United States and other relevant securities laws;

    client and investor relations: arranging for the provision of, advisory, clerical and investor relations services to assist and support us in our communications with our common unitholders; and

      commercial management services:  assistance with our commercial management and the execution of our business strategies, although KNOT UK does not make any strategic decisions;

      bookkeeping, audit and accounting services:  assistance with the maintenance of our corporate books and records, assistance with the preparation of our tax returns and arranging for the provision of audit and accounting services;

      legal and insurance services:  arranging for the provision of legal, insurance and other professional services and maintaining our existence and good standing in necessary jurisdictions;

      administrative and clerical services:  assistance with office space, arranging meetings for our common unitholders pursuant to our partnership agreement, arranging the provision of IT services, providing all administrative services required for subsequent debt and equity financings and attending to all other administrative matters necessary to ensure the professional management of our business;

      banking and financial services:  providing cash management including assistance with preparation of budgets, overseeing banking services and bank accounts, arranging for the deposit of funds and monitoring and maintaining compliance therewith;

      advisory services:  assistance in complying with United States and other relevant securities laws;

      client and investor relations:  arranging for the provision of, advisory, clerical and investor relations services to assist and support us in our communications with our common unitholders; and

      assistance with the integration of any acquired businesses.

    Each month, we reimburse KNOT UK, and KNOT UK reimburses KOAS UK, KOAS and KNOT Management, as applicable, for their reasonable costs and expenses incurred in connection with the provision of the services under the administrative services agreement. In addition, KNOT UK, KOAS UK, KOAS and KNOT Management, as applicable, receives a service fee in U.S. Dollars equal to 5% of the costs and expenses incurred by them in connection with providing services. Amounts payable by us under the administrative services agreement must be paid on a monthly basis within 30 days after receipt of an invoice for such costs and expenses, together with any supporting detail that may be reasonably required.

    Under the administrative services agreement, we indemnify KNOT UK’sUK's subcontractors against all actions which may be brought against them as a result of their performance of the administrative services including, without limitation, all actions brought under the environmental laws of any jurisdiction, and against and in respect of all costs and expenses they may suffer or incur due to defending or settling such actions; provided, however, that such indemnity excludes any or all losses to the extent that they are caused by or due to the fraud, gross negligence or willful misconduct of the subcontractor or its officers, employees and agents.

    Technical Management Agreements

    Each of theBodil Knutsen, theWindsor Knutsen,theCarmen Knutsen,theHilda Knutsen, theTorill Knutsen,and theIngrid Knutsen, theRaquel Knutsen, theTordis Knutsen, theVigdis Knutsen, theLena Knutsen, theBrasil Knutsen and theAnna Knutsen, which operate under time charters, is subject to technical management agreements pursuant to which certain crew, technical and commercial management services are provided by KNOT Management. Under these technical management agreements, our operating subsidiaries pay fees to and reimburse the costs and expenses of the managers as described below. TheRecife Knutsen, theFortaleza Knutsen,theDan Sabiaand theDan


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    Cisneoperate under bareboat charters and, as a result, the customer is responsible with providing for the crew, technical and commercial management of the vessel. However, each of these vessels are subject to management and administration agreements with either KNOT Management or KNOT Management Denmark pursuant to which these companies provide general monitoring services for the vessels in exchange for an annual fee. Please read “—"—Management and Administration Agreements”Agreements".

    Management servicesservices..    Each of the technical management agreements requires that KNOT Management and its subcontractors use their best endeavors to perform the following management services:

      the provision of suitably qualified crew in accordance with International Convention on Standards of Training, Certification and Watchkeeping for Seafarers, 1978, as amended, and the attendance to all matters pertaining to discipline, labor relations, welfare and amenities of the crew;



    the provision of technical management, including arranging and supervising drydockings, maintenance and repairs of the vessel, arranging for the supply of stores, spares and lubricating oil, appointing surveyors and technical consultants and developing, implementing and maintaining a Safety Management System in accordance with the ISM Code;



    the provision of applicable documentation and compliance with applicable regulations;



    the establishment of an accounting system that meets the requirements of the owner, provides regular accounting services and supplies reports and records and the maintenance of records of costs and expenditures incurred, as well as data necessary for the settlement of accounts between the parties;



    the arrangement for the supply of provisions and necessary stores;



    the handling and settlement of claims arising out of the management services;



    the arrangement for the provision of bunker;



    the arrangement of the loading and discharging and all related matters, subject to the provisions of the time charters;



    the arrangement of all insurances;



    the giving of instructions to the master and officers, subject to the provisions of the time charters; and



    the arrangement of the lay-up of each vessel.

    With respect to the technical management agreements, KNOT Management and its subcontractors use their best endeavors to also provide the commercial operations, including arranging payment to the owner’sowner's account of all hire and/or freight revenues, calculating hire, freight and other money due from or to the charterer, issuing voyage instructions, appointing agents and stevedores and arranging surveys associated with the commercial operations.

    Annual management feefee..    Pursuant to each of the technical management agreements, each of KNOT Shuttle Tankers 17 AS, KNOT Shuttle Tankers 18 AS, Knutsen Shuttle Tankers 13 AS, Knutsen Shuttle Tankers 14 AS, Knutsen Shuttle Tankers 15 AS, and Knutsen NYK Shuttle Tankers 16 AS, Knutsen Shuttle Tankers 19 AS, KNOT Shuttle Tankers 24 AS, KNOT Shuttle Tankers 25 AS and KNOT Shuttle Tankers 26 AS, KNOT Shuttle Tankers 32 AS and KNOT Shuttle Tankers 30 AS as owners, currently paid a fee of $0.46$0.55 million per year for 20152018 to KNOT Management, as manager, payable in equal monthly installments. This annual rate is subject to an adjustment on January 1 of each year pursuant to a procedure set forth in the agreements. The annual management fee for 20162019 has been set at $0.5


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    $0.58 million per vessel. Any dispute relating to the annual rate adjustment would be settled by dispute resolution provisions set forth in the applicable technical management agreement.

    Term        Term..    Each of the technical management agreements for theWindsor Knutsen and theBodil Knutsen continues indefinitely until terminated by either party after giving three months’months' written notice. Each of the technical management agreements for theCarmen Knutsen, theHilda Knutsen, theTorill Knutsen, and theIngrid Knutsen, theRaquel Knutsen, theTordis Knutsen, theVigdis Knutsen, theLena Knutsen, theBrasil Knutsen and theAnna Knutsen continues indefinitely until terminated by either party after giving six months’months' notice.

    Automatic termination and termination by either party ..    Each technical management agreement terminates or is deemed to be terminated if:

      the vessel is sold, requisitioned, declared a constructive, compromised or arranged total loss or becomes a total loss; or



    an order is made or a resolution is passed for the winding up, dissolution, liquidation or bankruptcy of either party (otherwise than for the purpose of reconstruction or amalgamation), a receiver is appointed or either party suspends payment, ceases to carry on business or makes any special arrangement or composition with its creditors.

    Termination by the managermanager..    Under each technical management agreement, the manager may terminate the agreement with immediate effect by written notice if:

      any money payable to the manager pursuant to the agreement has not been paid within a specified period of days after demand by the manager for payment or the vessel is repossessed by the mortgagees; or



    the owner proceeds with the employment of or continues to employ the vessel (1) in the carriage of contraband, blockade running or an unlawful trade or (2) on a voyage that in the reasonable opinion of the applicable manager is unduly hazardous or improper. The manager may only terminate if the owner is given notice of such default and fails to cure within a reasonable time to the satisfaction of the manager.

    KNOT Management also may terminate each technical management agreement if the applicable owner elects to provide officers and, for any reason within its control, fails to (1) procure that all officers and ratings supplied by it or on its behalf comply with the requirements of the STCW 95International Convention on Standards of Training, Certification and Watchkeeping for Seafarers, as amended in 1995, or (2) instruct such officers and ratings to obey all reasonable orders of KNOT Management in connection with the operation of KNOT Management’sManagement's safety management system. The manager may only terminate if the owner is given notice of such default and fails to cure within a reasonable time to the satisfaction of the manager.

    Termination by the ownerowner..    Under each technical management agreement, the owner may terminate the applicable agreement with immediate effect by written notice to the manager if the manager, for any reason, is in default and fails to cure within a reasonable time.

    Additional fees and provisionsprovisions..    In addition to the fees payable under each technical management agreement, the agreement also provides that the owner must make available to the manager each month within 60 days of a demand by the manager for payment an amount equal to the working capital required to run the vessel for the ensuing quarter. Further, under each technical management agreement, the manager and its employees, agents and subcontractors are indemnified by the owner against all actions that may be brought against them or incurred or suffered by them arising out of or in connection with their performance under such agreement in an amount not to exceed ten times the annual management fee payable under such agreement; provided, however, that such indemnity


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    excludes any or all losses that may be caused by or due to the fraud, gross negligence or willful misconduct of the manager or its employees, agents and subcontractors.

    Management and Administration Agreements

    TheRecife Knutsen,theFortaleza Knutsen,theDan Sabiaand theDan Cisneoperate under bareboat charters and, as a result, the customer is responsible with providing for the crew, technical and commercial management of the vessel. However, each of these vessels are subject to management and administration agreements pursuant to which the subsidiaries that own and operate these vessels paid a fee of $0.05 million per year for theRecife Knutsen and theFortaleza Knutsen and a fee of $0.02 million per vesselyear for 2015theDan Sabia and theDan Cisne to either KNOT Management or KNOT Management Denmark, as manager, in exchange for general monitoring services. This annual fee is subject to an adjustment on January 1 of each year pursuant to a procedure set forth in the agreements. The annual fee for 20162019 has been set at $0.05 per vessel.$0.06 million for theRecife Knutsen and theFortaleza Knutsen and $0.02 million for theDan Sabia and theDan Cisne. Any dispute relating to the annual fee adjustment would be settled by dispute resolution provisions set forth in the agreements. The management and administration agreements continue indefinitely until terminated by either party after giving two months’months' written notice, in the case of theDan Sabia andDan Cisne agreements or three months’months' written notice, in the case of theRecife Knutsen andFortaleza Knutsen agreements. The management and administration agreements also may be terminated by the owner or manager on terms similar to the technical management agreements.

    Contribution and Sale Agreement

    On April 15, 2013, in connection with the closing of our IPO, we entered into a contribution and sale agreement with KNOT and certain of its subsidiaries that effected the transfer of the ownership interests in the entities that owned the vessels in our initial fleet and the use of the net proceeds of our IPO.

    Acquisition of theCarmenVigdis Knutsen

    On July 11, 2013,        In May 2017, we entered into a share purchase agreement pursuant to which we acquired KNOT’s 100% interest in Knutsen Shuttle Tankers 13 AS, the company that owns and operates theCarmen Knutsen. As part of the financing for the acquisition, KNOT provided KNOT Offshore Tankers AS a seller’s credit in the form of a loan for $10.4 million after a purchase price adjustment. The Conflicts Committee approved the acquisition. In addition, in connection with the acquisition, Knutsen Shuttle Tankers 13 AS entered into a technical management agreement relating to theCarmen Knutsen with KNOT.

    Acquisition of theHilda Knutsen and theTorill Knutsen

    In June, 2014, we entered into share purchase agreements pursuant to which we acquired KNOT’s 100% interests in Knutsen Shuttle Tankers 14 AS and Knutsen Shuttle Tankers 15 AS, the companies that own and operate the shuttle tankers theHilda Knutsenand theTorill Knutsen for consideration of $335 million, net of $221.8 million of outstanding indebtedness related to the vessels. The cash portion of the purchase prices was financed with proceeds from the Partnership’s public offering of 4,600,000 common units which closed on June 27, 2014. The purchase prices were subsequently adjusted by a working capital adjustment of $1.0 million. The Conflicts Committee approved the acquisitions.

    In connection with the acquisition of theHilda Knutsen and theTorill Knutsen, Knutsen Shuttle Tankers 14 AS and Knutsen Shuttle Tankers 15 AS each entered into a technical management agreement with KNOT Management, a wholly owned subsidiary of KNOT, to provide management services with respect to the vessels.

    Acquisition of theDan Cisne

    In December 2014, we entered into a share purchase agreement pursuant to which we acquired KNOT’sKNOT's 100% interest in KNOT Shuttle Tankers 20 AS,25, the company that owns and operates the shuttle tanker theDan CisneVigdis Knutsen for consideration of $103.0$147.0 million, less approximately $82.2$137.7 million of outstanding indebtedness related to the vessel, plus approximately $17.9 million for a receivable owed by KNOT to KNOT 25, plus approximately $0.9 million for certain capitalized fees related to the financing of theVigdis Knutsenand plus other purchase price adjustments of $2.6 million. The purchase price was settled by way of a cash payment of approximately $8.8$.3.7 million including adjustments related tofor working capital and interest rate swaps, and a seller’s credit provided byswaps. On the closing of the acquisition on March 1, 2017, KNOT in form of a loan of $12.0 million. The Conflicts Committee approved the acquisition.

    Acquisition of theDan Sabia

    In June 2015, we entered into a share purchase agreement pursuant to which we acquired KNOT’s 100% interest in KNOT Shuttle Tankers 21 AS, the company that owns and operates the shuttle tanker theDan Sabia for consideration of $103.0 million less25 repaid approximately $64.5$42.9 million of outstandingthe indebtedness related toand KNOT repaid the vessel and other purchase price adjustments of $2.7 million. The purchase price was settled by way of a cash payment financed by proceeds from the June 2015 Offering. The Conflicts Committee approved the acquisition.

    Acquisition of theIngrid Knutsen

    In October 2015, we entered into a share purchase agreement pursuant to which we acquired KNOT’s 100% interest in Knutsen NYK Shuttle Tankers 16 AS, the company that owns and operates the shuttle tanker theIngrid Knutsenfor consideration of $115.0 million less approximately $104.5 million of outstanding indebtedness related to the vessel and other purchase price adjustments of $2.4 million.receivable. The purchase price was settled by way of a cash payment financed by cash on hand. The Conflicts Committee approved the acquisition.

    acquisition of theVigdis Knutsen.

    Acquisition of theLena Knutsen

            In August 2017, we entered into a share purchase agreement pursuant to which we acquired KNOT's 100% interest in KNOT 26, the company that owns and operates the shuttle tanker theLena Knutsen for consideration of $142.0 million, less approximately $133.8 million of outstanding indebtedness related to the vessel, plus approximately $24.1 million for a receivable owed by KNOT to KNOT 26, plus approximately $1.0 million for certain capitalized fees related to the financing of theLena Knutsen and less other purchase price adjustments of $0.1 million. On the closing of the acquisition on September 30, 2017, KNOT 26 repaid approximately $41.9 million of the indebtedness and KNOT repaid the receivable. The purchase price was settled by way of a cash payment financed by cash on hand. The Conflicts Committee approved the acquisition of theLena Knutsen.

    Acquisition of theBrasil Knutsen

            In December 2017, we entered into a share purchase agreement pursuant to which we acquired KNOT's 100% interest in KNOT 32, the company that owns and operates the shuttle tanker theBrasil Knutsen for consideration of $96.0 million, less $59.0 million of outstanding indebtedness related to the vessel, less approximately $35.2 million for a loan owed by KNOT 32 to KNOT (the "Company


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    Liquidity Loan"), plus approximately $0.6 million for certain capitalized fees related to the financing of theBrasil Knutsen and other purchase price adjustments of $3.4 million. On the closing of the acquisition on December 15, 2017, KNOT 32 paid the Company Liquidity Loan in full. The cash portion of the purchase price was financed with the proceeds from our public offering of 3,000,000 common units which closed on November 9, 2017. See Note 22—Equity Offerings and Sale of Series Preferred Units—Equity Offerings in the consolidated financial statements included in this Annual Report. The Conflicts Committee approved the acquisition. The Conflicts Committee approved the acquisition of theBrasil Knutsen .

    Acquisition of theAnna Knutsen

            In February 2018, we entered into a share purchase agreement pursuant to which we acquired KNOT's 100% interest in KNOT 30, the company that owns the shuttle tanker,Anna Knutsen, for a purchase price of $120.0 million, less approximately $106.8 million of outstanding indebtedness related to theAnna Knutsen, plus approximately $1.4 million for certain capitalized fees related to the financing of theAnna Knutsen and other purchase price adjustments of $5.3 million. On the closing of the acquisition on March 1, 2018, KNOT 30 repaid approximately $32.3 million of the indebtedness, leaving an aggregate of approximately $74.4 million of debt outstanding under the secured credit facility related to the vessel. The purchase price was settled by way of a cash payment financed by cash on hand. The Conflicts Committee approved the acquisition of theAnna Knutsen.

    Please read Note 22—Business 21—Acquisitions in the consolidated and combined carve-out financial statements included in this Annual Report.

    Other Related Party Transactions

    The following table summarizes related party expenses charged or allocated to us for the year ended December 31, 20152018 and included in the consolidated and combined carve-out financial statements. Please read Note 18—Related Party Transactions in the consolidated and combined carve-out financial statements included in this Annual Report.

     
     Year Ended
    December 31, 2018
     
     
     (U.S. Dollars in
    thousands)

     

    Statement of Operations Data:

        

    Time charter and bareboat revenues

     $ 

    Other income

      749 

    Operating expenses

      (6,491)

    General and administrative expenses

      (2,300)

    Finance income (expense)

       

    Total income (expense)

     $(8,043)

            

       Year Ended
    December 31, 2015
     
       

    (U.S. Dollars in

    thousands)

     

    Statement of Operations Data:

      

    Time charter and bareboat revenues

      $16,231  

    Other income

       122  

    Operating expenses

       2,420  

    General and administrative expenses

       1,916  

    Finance income (expense)

       (268

    Total income (expense)

      $11,749  

    Payables to KNOT and KOAS were $0.4 million and $0.4$0.6 million, respectively, for the year ended December 31, 2015.2018. In addition, included in trade accounts payable, trading balances due to KOAS were $0.7$0.4 million and trading balances due to KNOT were $0.4$0.5 million for the year ended December 31, 2015.2018. Outstanding balances are settled on a monthly basis.

    As a result of our relationships with KNOT and its affiliates, we, our general partner and our subsidiaries have entered into various agreements that were not the result of arm’sarm's length negotiations. We generally refer to these agreements and the transactions that they provide for as “affiliated transactions”"affiliated transactions" or “related"related party transactions."

    Our partnership agreement sets forth procedures by which future related party transactions may be approved or resolved by our board of directors. Pursuant to our partnership agreement, our board of


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    directors may, but is not required to, seek the approval of a related party transaction from the conflicts committee of our board of directors or from the common unitholders. Affiliated transactions that are not approved by the conflicts committee of our board of directors and that do not involve a vote of unitholders must be on terms no less favorable to us than those generally provided to or available from unrelated third parties or be “fair"fair and reasonable”reasonable" to us. In determining whether a transaction or resolution is “fair"fair and reasonable," our board of directors may consider the totality of the relationships between the parties involved, including other transactions that may be particularly advantageous or beneficial to us. If the above procedures are followed, it will be presumed that, in making its decision, our board of directors acted in good faith, and in any proceeding brought by or on behalf of any limited partner or the partnership,Partnership, the person bringing or prosecuting such proceeding will have the burden of overcoming such presumption. When our partnership agreement requires someone to act in good faith, it requires that person to reasonably believe that he is acting in the best interests of the partnership,Partnership, unless the context otherwise requires.

    Our conflicts committee is comprised of at least two members of our board of directors. The conflicts committee is available at our board of directors’directors' discretion to review specific matters that our board of directors believes may involve conflicts of interest. The conflicts committee may determine if the resolution of the conflict of interest is fair and reasonable to us. The members of the conflicts committee may not be officers or employees of us or directors, officers or employees of our general partner or its affiliates, and must meet the independence standards established by the NYSE to serve on an audit committee of a board of directors and certain other requirements.

    Distributions to KNOT

    We have declared and paid quarterly distributions totaling $20.9$22.1 million and $17.2$21.8 million to KNOT for each of the years ended December 31, 20152018 and 2014,2017, respectively.

      C. Interests of Experts and Counsel

    Not applicable.

    Item 8.    Financial Information

      A. Consolidated Statements and Other Financial Information

    Please read “Item"Item 18. Financial Statements”Statements" for additional information required to be disclosed under this item.

    Legal Proceedings

    From time to time we have been, and expect to continue to be, subject to legal proceedings and claims in the ordinary course of our business, principally personal injury and property casualty claims. These claims, even if lacking merit, could result in the expenditure of significant financial and managerial resources. We are not aware of any legal proceedings or claims that we believe will have, individually or in the aggregate, a material adverse effect on us.

    Our Cash Distribution Policy

      Rationale for Our Cash Distribution Policy

    Our cash distribution policy reflects a judgment that our unitholders will be better served by our distributing our available cash (after deducting expenses, including estimated maintenance and replacement capital expenditures and reserves) rather than retaining it. Because we believe we will generally finance any expansion capital expenditures from external financing sources, we believe that our investors are best served by our distributing all of our available cash. Our cash distribution policy is


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    consistent with the terms of our partnership agreement, which requires that we distribute all of our available cash quarterly (after deducting expenses, including estimated maintenance and replacement capital expenditures and reserves).

      Limitations on Cash Distributions and Our Ability to Change Our Cash Distribution Policy

    There is no guarantee that unitholders will receive quarterly distributions from us. Our distribution policy is subject to certain restrictions and may be changed at any time, including:

      Our unitholders have no contractual or other legal right to receive distributions other than the obligation under our partnership agreement to distribute available cash on a quarterly basis, which is subject to the broad discretion of our board of directors to establish reserves and other limitations.



    We are subject to restrictions on distributions under our financing agreements. Our financing agreements contain material financial tests and covenants that must be satisfied in order to pay distributions. If we are unable to satisfy the restrictions included in any of our financing agreements or are otherwise in default under any of those agreements, as a result of our debt levels or otherwise, we will not be able to make cash distributions to our unitholders, notwithstanding our stated cash distribution policy. These financial tests and covenants are described in this Annual Report in “Item"Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources.

    "

    We are required to make substantial capital expenditures to maintain and replace our fleet. These expenditures may fluctuate significantly over time, particularly as our vessels near the end of their useful lives. In order to minimize these fluctuations, our partnership agreement requires us to deduct estimated, as opposed to actual, maintenance and replacement capital expenditures from the amount of cash that we would otherwise have available for distribution to our unitholders. In years when estimated maintenance and replacement capital expenditures are higher than actual maintenance and replacement capital expenditures, the amount of cash available for distribution to unitholders will be lower than if actual maintenance and replacement capital expenditures were deducted.



    Although our partnership agreement requires us to distribute all of our available cash, our partnership agreement, including provisions contained therein requiring us to make cash distributions, may be amended. During the subordination period, with certain exceptions, our partnership agreement may not be amended without the approval of non-affiliated common unitholders. After the subordination period has ended, our partnership agreement can be amended with the approval of a majority of the outstanding common units.



    Even if our cash distribution policy is not modified or revoked, the amount of distributions we pay under our cash distribution policy and the decision to make any distribution is determined by our board of directors, taking into consideration the terms of our partnership agreement.



    Under Section 51 of the Marshall Islands Act, we may not make a distribution to our unitholders if the distribution would cause our liabilities, other than liabilities to partners on account of their partnership interest and liabilities for which the recourse of creditors is limited to specified property of ours, to exceed the fair value of our assets, except that the fair value of property that is subject to a liability for which the recourse of creditors is limited shall be included in our assets only to the extent that the fair value of that property exceeds that liability.

    Our common units are subject to the prior distribution rights of any holders of preferred units then outstanding. As of April 10, 2019, there were 3,750,000 Series A Preferred Units issued and outstanding. Under the terms of our partnership agreement, we are prohibited from declaring and paying distributions on our common units until we declare and pay (or set aside for payment) full distributions on the Series A Preferred Units.

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      We may lack sufficient cash to pay distributions to our unitholders due to decreases in total operating revenues, decreases in hire rates, the loss of a vessel, increases in operating or general and administrative expenses, principal and interest payments on outstanding debt, taxes, working capital requirements, maintenance and replacement capital expenditures or anticipated cash needs. Please read “Item"Item 3. Key Information—Risk Factors”Factors" for a discussion of these factors.

    Our ability to make cash distributions to our unitholders depends on the performance of our subsidiaries and their ability to distribute cash to us. The ability of our subsidiaries to make distributions to us may be restricted by, among other things, the provisions of existing and future indebtedness, applicable limited partnership and limited liability company laws in the Marshall Islands and Norway and other laws and regulations.

      Series A Convertible Preferred Units

            The Series A Preferred Units rank senior to the common units as to the payment of distributions and amounts payable upon liquidation, dissolution or winding up. The Series A Preferred Units have a liquidation preference of $24.00 per unit, plus any unpaid Series A cash distributions, plus all accrued but unpaid distributions on such Series A Preferred Unit with respect to the quarter in which the liquidation occurs to the date fixed for the payment of any amount upon liquidation. The Series A Preferred Units are entitled to cumulative distributions from their initial issuance date, with distributions being calculated at an annual rate of 8.0% on the stated liquidation preference and payable quarterly in arrears within 45 days after the end of each quarter, when, as and if declared by the board of directors of the Partnership.

            During the year ended December 31, 2018, the aggregate amount of cash distributions paid to the holders of the Series A Preferred Units was $7.2 million.

      Minimum Quarterly Distribution

    Common unitholders are entitled under our partnership agreement to receive a minimum quarterly distribution of $0.375 per unit or $1.50 per unit per year, prior to any distribution on the subordinated units to the extent we have sufficient cash on hand to pay the distribution, after establishment of cash reserves, distribution payments on the Series A Preferred Units and payment of fees and expenses. There is no guarantee that we will pay the minimum quarterly distribution on the common units and subordinated units in any quarter. Even if our cash distribution policy is not modified or revoked, the amount of distributions paid under our policy and the decision to make any distribution is determined by our board of directors, taking into consideration the terms of our partnership agreement. We are prohibited from making any distributions to unitholders if it would cause an event of default, or an event of default is then existing, under our financing agreements. Please read “Item"Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources”Resources" for a discussion of the restrictions contained in our credit facilities and lease arrangements that may restrict our ability to make cash distributions to our unitholders.

    During the year ended December 31, 2015,2018, the aggregate amount of cash distributions paid to common unitholders was $53.4$70.8 million.

      On February 15, 2016 we paid a cash distribution of $0.52 per unit in respect of the three months ended December 31, 2015. The aggregate amount of the distribution was $15.0 million.

      Subordination Period

      During the subordination period applicable to the subordinated units currently held by KNOT, the common units will have the right to receive distributions of available cash from operating surplus in an amount equal to the minimum quarterly distribution of $0.375 per unit, plus any arrearages in the payment of the minimum quarterly distribution on the common units from prior quarters, before any distributions of available cash from operating surplus may be made on the subordinated units. Distribution arrearages do not accrue on the subordinated units. The purpose of the subordinated units is to increase the likelihood that during the subordination period there will be available cash from operating surplus to be distributed on the common units. We currently expect that the subordination period will end in the second quarter of 2016.

      Incentive Distribution Rights

    Incentive distribution rights represent the right to receive an increasing percentage of quarterly distributions of available cash from operating surplus after the minimum quarterly distribution and the target distribution levels have been achieved. KNOT currently holds the incentive distribution rights. The incentive distribution rights may be transferred separately from any other interest, subject to restrictions in our partnership agreement. Except for transfers of incentive distribution rights to an affiliate or another entity as part of a merger or consolidation with or into, or sale of substantially all of its assets to such entity, the approval of a majority of our common units (excluding common units held by our general partner and its affiliates), voting separately as a class, generally is required for a transfer of the incentive distribution rights to a third party prior to March 31, 2018. Any transfer by KNOT of the incentive distribution rights would not change the percentage allocations of quarterly distributions with respect to such rights.


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    The following table illustrates the percentage allocations of the additional available cash from operating surplus among our unitholders, our general partner and the holders of the incentive distribution rights up to the various target distribution levels. The amounts set forth under “Marginal"Marginal Percentage Interest in Distributions”Distributions" are the percentage interests of our unitholders, our general partner and the holders of the incentive distribution rights in any available cash from operating surplus we distribute up to and including the corresponding amount in the column “Total"Total Quarterly Distribution Target," until available cash from operating surplus we distribute reaches the next target distribution level, if any. The percentage interests shown for our unitholders, our general partner and the holders of the incentive distribution rights for the minimum quarterly distribution are also applicable to quarterly distributions that are less than the minimum quarterly distribution. The percentage interests set forth in the table below assume that our general partner owns a 2.0%1.85% general partner interest and that we do not issue additional classes of equity securities.

     
      
     Marginal Percentage
    Interest in
    Distributions
      
     
     
      
     Holders of
    Incentive
    Distribution
    Rights
     
     
     Total Quarterly
    Distribution
    Target
     Unitholders General
    Partner
     

    Minimum Quarterly Distribution

     $0.375  98.15% 1.85% 0%

    First Target Distribution

     up to $0.43125  98.15% 1.85% 0%

    Second Target Distribution

     above $0.43125 up to $0.46875  85.15% 1.85% 13.0%

    Third Target Distribution

     above $0.46875 up to $0.5625  75.15% 1.85% 23.0%

    Thereafter

     above $0.5625  50.15% 1.85% 48.0%

          Marginal Percentage
    Interest
    in Distributions
        
       

    Total Quarterly

    Distribution

    Target

      Unitholders  General
    Partner
      Holders of
    Incentive
    Distribution
    Rights
     

    Minimum Quarterly Distribution

      $0.375   98.0  2.0  0

    First Target Distribution

      up to $0.43125   98.0  2.0  0

    Second Target Distribution

      above $0.43125 up to $0.46875   85.0  2.0  13.0

    Third Target Distribution

      above $0.46875 up to $0.5625   75.0  2.0  23.0

    Thereafter

      above $0.5625   50.0  2.0  48.0

      B. Significant Changes

            Please read Note 24—Subsequent Events in the consolidated financial statements included in this Annual Report.

    Not applicable.

    Item 9.    The Offer and Listing

      A. Offer and Listing Details

    The high and low sales prices of our        Our common units as reported byare traded on the NYSE forunder the quarters and months indicated, are as follows:symbol "KNOP".

       High   Low 

    Year ended December 31, 2016(1)

      $17.58    $9.68  

    Year ended December 31, 2015

      $26.49    $10.38  

    Year ended December 31, 2014

       29.89     18.78  

    Year ended December 31, 2013(2)

       29.39     20.68  

    First quarter 2016(1)

       17.58     9.68  

    Fourth quarter 2015

       18.54     10.38  

    Third quarter 2015

       19.85     12.58  

    Second quarter 2015

       26.49     23.36  

    First quarter 2015

       25.45     18.21  

    Fourth quarter 2014

       27.42     18.78  

    Third quarter 2014

       28.80     24.69  

    Second quarter 2014

       29.89     26.41  

    First quarter 2014

       29.58     23.50  

    Month ended March 31, 2016(3)

       17.58     15.70  

    Month ended February 29, 2016

       16.60     10.80  

    Month ended January 31, 2016

       15.00     9.68  

    Month ended December 31, 2015

       16.12     10.38  

    Month ended November 30, 2015

       16.76     13.67  

    Month ended October 31, 2015

       18.54     15.02  

    (1)For the period from January 1, 2016 through March 17, 2016.
    (2)For the period from April 9, 2013 through December 31, 2013.
    (3)For the period from March 1, 2016 through March 17, 2016.

      B. Plan of Distribution

    Not applicable.

      C. Markets

    Our common units started trading on the NYSE under the symbol “KNOP” on April 9, 2013.

      D. Selling Shareholders

    Not applicable.

      E. Dilution

    Not applicable.

      F. Expenses of the Issue

    Not applicable.


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    Item 10.    Additional Information

      A. Share Capital

    Not applicable.

      B. Memorandum and Articles of Association

    The information required to be disclosed under Item 10B is incorporated by reference to our Registration Statement on Form 8-A8-A/A filed with the SEC on April 5, 2013.June 30, 2017.

      C. Material Contracts

    The following is a summary of each material contract, other than material contracts entered into in the ordinary course of business, to which we or any of our subsidiaries is a party, for the two years immediately preceding the date of this Annual Report, each of which is included in the list of exhibits in “Item"Item 19. Exhibits”Exhibits":

    (1)
    Omnibus Agreement, dated April 15, 2013, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Offshore Partners GP LLC, KNOT Shuttle Tankers 17 AS and KNOT Shuttle Tankers 18 AS. Please read "Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Omnibus Agreement."

    (2)
    Administrative Services Agreement, dated February 26, 2013, among KNOT Offshore Partners LP, KNOT Offshore Partners UK LLC, Knutsen OAS (UK) Ltd., Knutsen OAS Shipping AS and KNOT Management AS, as amended by Amendment No. 1, dated May 7, 2015, Amendment No. 2, dated November 28, 2018, and Amendment No. 3, dated March 13, 2019. Please read "Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Administrative Services Agreement."

    (3)
    Management and Administration Agreements with respect to each of theFortaleza Knutsen,Recife Knutsen,Dan Cisne andDan Sabia and Technical Management Agreements with respect to each of the other vessels in our fleet. Please read "Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Management and Administration Agreements" and "Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Technical Management Agreements", respectively.

    (4)
    Loan Agreement, dated March 31, 2017, among Knutsen Shuttle Tankers 14 AS, as borrower, and Mitsubishi UFJ Lease & Finance (Hong Kong) Limited, as lender. Please read "Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—Hilda Loan Facility."

    (5)
    Facility Agreement, dated November 8, 2017, among Knutsen Shuttle Tankers 15 AS, as borrower, and the other parties thereto. Please read "Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—Torill Loan Facility."

    (6)
    Senior Secured Credit Facilities Agreement, dated April 3, 2014, among KNOT Shuttle Tankers 20 AS and KNOT Shuttle Tankers 21 AS, as borrowers, and the other parties thereto. Please read "Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—$172.5 Million Secured Loan Facility."

    (7)
    Accession Letter, dated December 15, 2014, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers 20 AS and Sumitomo Mitsui Banking Corporation Europe Limited, pursuant to which the Partnership guaranteed all amounts outstanding with respect to the Dan Cisne Facility. Please read "Item 5. Operating and Financial Review and

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    (1)Contribution and Sale Agreement, dated April 15, 2013, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Offshore Partners GP LLC, KNOT Offshore Partners UK LLC and KNOT Shuttle Tankers AS. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Contribution and Sale Agreement.”

      Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—$172.5 Million Secured Loan Facility."

      (2)Omnibus Agreement, dated April 15, 2013, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Offshore Partners GP LLC, KNOT Shuttle Tankers 17 AS and KNOT Shuttle Tankers 18 AS. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Omnibus Agreement.”
    (8)
    Letter Agreement, dated June 15, 2015, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers 20 AS and Sumitomo Mitsui Banking Corporation Europe Limited, relating to the Accession Letter, dated December 15, 2014, pursuant to which the Partnership guaranteed all amounts outstanding with respect to the Dan Sabia Facility. Please read "Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—$172.5 Million Secured Loan Facility."

    (9)
    Facility Agreement, dated December 17, 2014, among Knutsen Shuttle Tankers 19 AS, as borrower, and the other parties thereto, as amended by Amendment Agreement No. 1, dated November 29, 2016. Please read "Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—Raquel Loan Facility."

    (10)
    Accession Letter, dated November 30, 2016, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, Knutsen Shuttle Tankers 19 AS and Sumitomo Mitsui Banking Corporation Europe Limited Please read "Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—Raquel Loan Facility."

    (11)
    Facilities Agreement, dated April 27, 2015, among KNOT Shuttle Tankers 24 AS, KNOT Shuttle Tankers 25 AS and KNOT Shuttle Tankers 26 AS, as borrowers, and the other parties thereto, as amended and restated on October 23, 2015. Please read "Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—Tordis Loan Facility", "—Vigdis Loan Facility" and "—Lena Loan Facility"

    (12)
    Accession Letter, dated February 28, 2017, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers AS, KNOT Shuttle Tankers 24 AS, KNOT Shuttle Tankers 25 AS, KNOT Shuttle Tankers 26 AS and DNB Bank ASA. Please read "Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—Tordis Loan Facility."

    (13)
    Accession Letter, dated June 1, 2017, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers AS, KNOT Shuttle Tankers 24 AS, KNOT Shuttle Tankers 25 AS, KNOT Shuttle Tankers 26 AS and DNB Bank ASA. Please read "Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—Vigdis Loan Facility."

    (14)
    Accession Letter, dated September 29, 2017, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers AS, KNOT Shuttle Tankers 24 AS, KNOT Shuttle Tankers 25 AS, KNOT Shuttle Tankers 26 AS and DNB Bank ASA. Please read "Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—Lena Loan Facility."

    (15)
    Term Loan Facility Agreement, dated June 27, 2017, among KNOT Shuttle Tankers 32 AS, as borrower, and the other parties thereto, as amended by Amendment Agreement No. 1, dated December 15, 2017. Please read "Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—Brasil Loan Facility."

    (16)
    Accession Letter, dated December 15, 2017, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers AS, KNOT Shuttle Tankers 32 AS and ABN AMRO Bank N.V. Please read "Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—Brasil Loan Facility."

    (17)
    Term Loan Facility Agreement, dated September 30, 2016, among KNOT Shuttle Tankers 30 AS, as borrower, and the other parties thereto. Please read "Item 5. Operating and Financial Review

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    (3)Administrative Services Agreement, dated February 26, 2013, among KNOT Offshore Partners LP, KNOT Offshore Partners UK LLC, Knutsen OAS (UK) Ltd., Knutsen OAS Shipping AS and KNOT Management AS, as amended by Amendment No. 1, dated May 7, 2015. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Administrative Services Agreement.”

      and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—Anna Loan Facility."

      (4)Ship Management Agreement for the Bodil Knutsen, dated October 28, 2010, between KNOT Shuttle Tankers 17 AS and KNOT Management AS, as amended. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Technical Management Agreements.”
    (18)
    Accession Letter, dated March 1, 2018, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers AS, KNOT Shuttle Tankers 30 AS and Nordea Bank AB. Please read "Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—Anna Loan Facility."

    (19)
    Term Loan and Revolving Credit Facilities Agreement, dated September 4, 2018, among KNOT Shuttle Tankers AS, Knutsen Shuttle Tankers XII KS, Knutsen Shuttle Tankers 13 AS, Knutsen NYK Shuttle Tankers 16 AS, KNOT Shuttle Tankers 17 AS, KNOT Shuttle Tankers 18 AS, as borrowers, the other parties thereto. Please read "Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—$320 Million Term Loan Facility and $55 Million Revolving Credit Facility."

    (20)
    Employment Agreement, dated May 7, 2015, between KNOT Offshore Partners UK LLC and John Costain. Please read "Item 6. Directors, Senior Management and Employees—Compensation—Executive Compensation."

    (21)
    Employment Agreement, dated March 12, 2019, between KNOT Offshore Partners UK LLC and Gary Chapman. Please read "Item 6. Directors, Senior Management and Employees—Compensation—Executive Compensation."

    (22)
    Share Purchase Agreement, dated May 16, 2017, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS, as amended by the Addendum, dated May 30, 2017. Please read "Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Acquisition of theVigdis Knutsen ."

    (23)
    Share Purchase Agreement, dated August 9, 2017, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS, as amended by the Addendum, dated September 26, 2017. Please read "Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Acquisition of theLena Knutsen ."

    (24)
    Share Purchase Agreement, dated December 15, 2017, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS. Please read "Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Acquisition of theBrasil Knutsen ."

    (25)
    Share Purchase Agreement, dated February 20, 2018, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS. Please read "Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Acquisition of theAnna Knutsen ."

    (26)
    Series A Preferred Unit Purchase Agreement, dated December 6, 2016, among KNOT Offshore Partners LP and the Purchasers party thereto, as amended pursuant to the Assignment and Novation Agreement, dated December 20, 2016, the First Amendment to Series A Preferred Unit Purchase Agreement, dated February 2, 2017 and the Second Amendment to Series A Preferred Unit Purchase Agreement, dated May 16, 2017. Please read Note 22—Equity Offerings and Sale of Series A Preferred Units in the consolidated financial statements.

    (27)
    Registration Rights Agreement, dated February 2, 2017, among KNOT Offshore Partners LP and the Purchasers party thereto. Please read Note 22—Equity Offerings and Sale of Series A Preferred Units in the consolidated financial statements.

    (28)
    Joinder Agreement, dated June 30, 2017, among KNOT Offshore Partners LP, OMP AY Preferred Limited, Pierfront Capital Mezzanine Fund Pte. Ltd. and Tortoise Direct Opportunities Fund, LP. Please read Note 22—Equity Offerings and Sale of Series A Preferred Units in the consolidated financial statements.

    (5)Ship Management Agreement for the Windsor Knutsen, dated November 10, 2010, between KNOT Shuttle Tankers 18 AS and KNOT Management AS, as amended. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Technical Management Agreements.”

    (6)Ship Management Agreement for the Carmen Knutsen, dated June 27, 2011, between Knutsen Shuttle Tankers 13 AS and KNOT Management AS, as amended. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Technical Management Agreements.”

    (7)Ship Management Agreement for the Hilda Knutsen, dated June 27, 2011, between Knutsen Shuttle Tankers 14 AS and KNOT Management AS, as amended. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Technical Management Agreements.”

    (8)Ship Management Agreement for the Torill Knutsen, dated June 27, 2011, between Knutsen Shuttle Tankers 15 AS and KNOT Management AS, as amended. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Technical Management Agreements.”

    (9)Ship Management Agreement for the Ingrid Knutsen, dated May 30, 2012, between Knutsen NYK Shuttle Tankers 16 AS and KNOT Management AS, as amended. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Technical Management Agreements.”

    (10)Ship Management Agreement for the Fortaleza Knutsen, dated October 28, 2010, between Knutsen Shuttle Tankers XII KS and KNOT Management AS, as amended. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Management and Administration Agreements.”

    (11)Ship Management Agreement for the Recife Knutsen, dated October 28, 2010, between Knutsen Shuttle Tankers XII KS and KNOT Management AS, as amended. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Management and Administration Agreements.”

    (12)Ship Management Agreement for the Dan Cisne, dated May 13, 2014, between KNOT Shuttle Tankers 20 AS and KNOT Management Denmark AS, as amended. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Management and Administration Agreements.”

    (13)Ship Management Agreement for the Dan Sabia, dated May 13, 2014, between KNOT Shuttle Tankers 21 AS and KNOT Management Denmark AS, as amended. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Management and Administration Agreements.”

    (14)Term Facility Agreement, dated June 10, 2014, among Knutsen Shuttle Tankers XII KS, as borrower, and the other parties thereto. Please read “Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—$140 Million Secured Loan Facility.”

    (15)Term and Revolving Facilities Agreement, dated June 10, 2014, among KNOT Shuttle Tankers 18 AS, Knot Shuttle Tankers 17 AS and Knutsen Shuttle Tankers 13 AS, as borrowers, and the other parties thereto. Please read “Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—$240 Million Secured Loan Facility.”

    (16)Amended and Restated Term Loan Facility Agreement, dated July 11, 2011, among Knutsen Shuttle Tankers 14 AS, as borrower, and the other parties thereto, as amended and restated by the First Supplemental Agreement, dated October 5, 2011, the Second Supplemental Agreement, dated January 23, 2014, and the Third Supplemental Agreement, dated June 26, 2014. Please read “Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—$117 Million Hilda Loan Facility.”

    (17)Amended and Restated Term Loan Facility Agreement, dated November 3, 2011, among Knutsen Shuttle Tankers 15 AS, as borrower, and the other parties thereto, as amended by an amendment letter, dated October 23, 2013, and as amended and restated by the First Supplemental Agreement, dated February 12, 2014, and the Second Supplemental Agreement, dated June 26, 2014. Please read “Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—$117 Million Torill Loan Facility.”

    (18)Senior Secured Credit Facilities Agreement, dated April 3, 2014, among KNOT Shuttle Tankers 20 AS and KNOT Shuttle Tankers 21 AS, as borrowers, and the other parties thereto. Please read “Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—$172.5 Million Secured Loan Facility.”

    (19)Accession Letter, dated December 15, 2014, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers 20 AS and Sumitomo Mitsui Banking Corporation Europe Limited, pursuant to which the Partnership guaranteed all amounts outstanding with respect to the Dan Cisne Facility. Please read “Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—$172.5 Million Secured Loan Facility.”
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    (20)Letter Agreement, dated June 15, 2015, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers 20 AS and Sumitomo Mitsui Banking Corporation Europe Limited, relating to the Accession Letter, dated December 15, 2014, pursuant to which the Partnership guaranteed all amounts outstanding with respect to the Dan Sabia Facility. Please read “Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—$172.5 Million Secured Loan Facility.”

    (21)Amended and Restated Term Loan Facility Agreement, dated June 7, 2012, among Knutsen NYK Shuttle Tankers 16 AS, as borrower, and the other parties thereto, as amended and restated by the First Supplemental Agreement, dated February 5, 2015, and the Second Supplemental Agreement, dated October 13, 2015. Please read “Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—$77.5 Million Secured Loan Facility.”

    (22)Employment Agreement, dated May 7, 2015, between KNOT Offshore Partners UK LLC and John Costain. Please read “Item 6. Directors, Senior Management and Employees—Compensation—Executive Compensation.”

    (23)Employment Agreement, dated March 28, 2013, between KNOT Offshore Partners UK LLC and Arild Vik. Please read “Item 6. Directors, Senior Management and Employees—Compensation—Executive Compensation.”

    (24)Fortaleza Knutsen Standard Bareboat Charter Party, dated November 14, 2007, between Knutsen Shuttle Tankers XII KS and Fronape International Company/Petrobras Transporte S.A.-Transpetro, novated by the Novation Agreement, dated June 27, 2012, between Knutsen Shuttle Tankers XII KS, Knutsen OAS Shipping AS, Fronape International Company, Petrobras Transporte S.A.-Transpetro and Fronape International Company B.V. Please read “Item 4. Information on the Partnership—Business Overview—Charters.”

    (25)Recife Knutsen Standard Bareboat Charter Party, dated November 14, 2007, between Knutsen Shuttle Tankers XII KS and Fronape International Company/Petrobras Transporte S.A.-Transpetro, novated by the Novation Agreement, dated June 29, 2012, between Knutsen Shuttle Tankers XII KS, Knutsen OAS Shipping AS, Fronape International Company, Petrobras Transporte S.A.-Transpetro and Fronape International Company B.V. Please read “Item 4. Information on the Partnership—Business Overview—Charters.”

    (26)Windsor Knutsen Time Charter Party, dated July 29, 2014, between KNOT Shuttle Tankers 18 AS and KNOT Shuttle Tankers Pool AS. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Windsor Knutsen Time Charter.”

    (27)Bodil Knutsen Time Charter Party, dated October 7, 2010, between Knutsen Bøyelaster VI KS and Statoil ASA, amended by Addendum No. 1, dated March 29, 2011, between Knutsen Bøyelaster VI KS and Statoil ASA and novated by the Novation Agreement, dated February 18, 2013, between Knutsen Bøyelaster VI KS, KNOT Shuttle Tankers 17 AS and Statoil ASA. Please read “Item 4. Information on the Partnership—Business Overview—Charters.”

    (28)Share Purchase Agreement, dated July 11, 2013, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Acquisition of theCarmen Knutsen.”

    (29)Share Purchase Agreement, dated June 23, 2014, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Acquisition of theHilda Knutsen and theTorill Knutsen.”

    (30)Share Purchase Agreement, dated June 23, 2014, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Acquisition of theHilda Knutsen and theTorill Knutsen.”

    (31)Share Purchase Agreement, dated December 10, 2014, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS, as amended. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Acquisition of theDan Cisne.”

    (32)Seller’s Credit, dated December 15, 2014, between KNOT Shuttle Tankers AS and Knutsen NYK Offshore Tankers AS. “Item 5. Operating and Financial Review and Prospects—Liquidity and Capital Resources—Borrowing Activities—Long-Term Debt—$12 Million Seller’s Credit.”

    (33)Share Purchase Agreement, dated May 27, 2015, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Acquisition of theDan Sabia.”

    (34)Share Purchase Agreement, dated October 13, 2015, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS. Please read “Item 7. Major Unitholders and Related Party Transactions—Related Party Transactions—Acquisition of theIngrid Knutsen.”

      D. Exchange Controls

    We are not aware of any governmental laws, decrees, regulations or other legislation, including foreign exchange controls, in the Republic of the Marshall Islands that may affect the import or export of capital, including the availability of cash and cash equivalents for use by the Partnership, or the remittance of dividends, interest or other payments to non-resident holders of our securities.

      E. Taxation

    The following is a discussion of the material U.S. federal income tax considerations that may be relevant to current and prospective unitholders. This discussion is based upon provisions of the Code, Treasury Regulations and current administrative rulings and court decisions, all as in effect or existence on the date of this Annual Report and all of which are subject to change, possibly with retroactive effect. Changes in these authorities may cause the tax consequences of unit ownership to vary substantially from the consequences described below. Unless the context otherwise requires, references in this section to “we,” “our”"we," "our" or “us”"us" are references to KNOT Offshore Partners LP.

    The following discussion applies only to beneficial owners of common units that own the common units as “capital assets”"capital assets" within the meaning of Section 1221 of the Code (i.e., generally, for investment purposes) and is not intended to be applicable to all categories of investors, such as unitholders subject to special tax rules (e.g., financial institutions, insurance companies, broker-dealers, tax-exempt organizations, retirement plans, or individual retirement accounts, persons who own (actually or constructively) 10% or more of the vote or value of our equity or former citizens or long-term residents of the United States), persons who hold the units as part of a straddle, hedge, conversion, constructive sale or other integrated transaction for U.S. federal income tax purposes, or persons that have a functional currency other than the U.S. Dollar, each of whom may be subject to tax rules that differ significantly from those summarized below. If a partnership or other entity classified as a partnership for U.S. federal income tax purposes holds our common units, the tax treatment of its partners generally will depend upon the status of the partner and the activities of the partnership. If you are a partner in a partnership holding our common units, you should consult your own tax advisor regarding the tax consequences to you of the partnership’spartnership's ownership of our common units.

    No ruling has been or will be requested from the IRS regarding any matter affecting us or current and prospective unitholders. The statements made herein may be challenged by the IRS and, if so challenged, may not be sustained upon review in a court.

    This discussion does not contain information regarding any U.S. state or local, estate, gift or alternative minimum tax considerations concerning the ownership or disposition of common units. This discussion does not comment on all aspects of U.S. federal income taxation that may be important to particular unitholders in light of their individual circumstances, and each prospective unitholder is urged to consult its own tax advisor regarding the U.S. federal, state, local and other tax consequences of the ownership or disposition of common units.

    Election to be Treated as a Corporation

    We have elected to be treated as a corporation for U.S. federal income tax purposes. As a result, U.S. Holders (as defined below) will not be directly subject to U.S. federal income tax on our income, but rather will be subject to U.S. federal income tax on distributions received from us and dispositions of units as described below.

    U.S. Federal Income Taxation of U.S. Holders

    As used herein, the term “U.S. Holder”"U.S. Holder" means a beneficial owner of our common units that owns (actually or constructively) less than 10% of our equity and that is:

      an individual U.S. citizen or resident (as determined for U.S. federal income tax purposes),

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      a corporation (or other entity that is classified as a corporation for U.S. federal income tax purposes) organized under the laws of the United States or any of its political subdivisions,



    an estate the income of which is subject to U.S. federal income taxation regardless of its source, or



    a trust if (1) a court within the United States is able to exercise primary jurisdiction over the administration of the trust and one or more U.S. persons have the authority to control all substantial decisions of the trust or (2) the trust has a valid election in effect to be treated as a U.S. person for U.S. federal income tax purposes.

      Distributions

    Subject to the discussion below of the rules applicable to PFICs, any distributions to a U.S. Holder made by us with respect to our common units generally will constitute dividends to the extent of our current and accumulated earnings and profits, as determined under U.S. federal income tax principles. We expect that the distributions we pay to U.S. Holders will not exceed our current and accumulated earnings and profits and, accordingly, all such distributions will constitute dividends. If notwithstanding that expectation, we make distributions to U.S. Holders in excess of our earnings and profits, the excess portion of those distributions will be treated first as a nontaxable return of capital to the extent of the U.S. Holder’sHolder's tax basis in its common units and thereafter as capital gain. U.S. Holders that are corporations generally will not be entitled to claim a dividends receiveddividends-received deduction with respect to distributions that they receive from us because we are not a U.S. corporation.us. Dividends received with respect to our common units generally will be treated as “passive"passive category income”income" for purposes of computing allowable foreign tax credits for U.S. federal income tax purposes.

    Dividends received with respect to our common units by a U.S. Holder that is an individual, trust or estate (a “U.S."U.S. Individual Holder”Holder") generally will be treated as “qualified"qualified dividend income," which is taxable to such U.S. Individual Holder at preferential tax rates provided that: (1) our common units are readily tradable on an established securities market in the United States (such as the NYSE, on which our common units are traded); (2) we are not a PFIC for the taxable year during which the dividend is paid or the immediately preceding taxable year (which we do not believe we are, have been or will be, as discussed below under “—"—PFIC Status and Significant Tax Consequences”Consequences"); (3) the U.S. Individual Holder has owned the common units for more than 60 days during the 121-day period beginning 60 days before the date on which the common units become ex-dividend (and has not entered into certain risk limiting transactions with respect to such common units); and (4) the U.S. Individual Holder is not under an obligation to make related payments with respect to positions in substantially similar or related property. Because of the uncertainty of these matters, including whether we are or will be a PFIC, there is no assurance that any dividends paid on our common units will be eligible for these preferential rates in the hands of a U.S. Individual Holder, and any dividends paid on our common units that are not eligible for these preferential rates will be taxed as ordinary income to a U.S. Individual Holder.

    Special rules may apply to any amounts received in respect of our common units that are treated as “extraordinary"extraordinary dividends." In general, an extraordinary dividend is a dividend with respect to a common unit that is equal to or in excess of 10% of a unitholder’sunitholder's adjusted tax basis (or fair market value upon the unitholder’sunitholder's election) in such common unit. In addition, extraordinary dividends include dividends received within a one-year period that, in the aggregate, equal or exceed 20% of a unitholder’sunitholder's adjusted tax basis (or fair market value). If we pay an “extraordinary dividend”"extraordinary dividend" on our common units that is treated as “qualified"qualified dividend income," then any loss recognized by a U.S. Individual Holder from the sale or exchange of such common units will be treated as long-term capital loss to the extent of the amount of such dividend.


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      Sale, Exchange or Other Disposition of Common Units

    Subject to the discussion of PFIC status below, a U.S. Holder generally will recognize capital gain or loss upon a sale, exchange or other taxable disposition of our units in an amount equal to the difference between the amount realized by the U.S. Holder from such sale, exchange or other taxable disposition and the U.S. Holder’sHolder's adjusted tax basis in such units. The U.S. Holder’sHolder's initial tax basis in its units generally will be the U.S. Holder’sHolder's purchase price for the units and that tax basis will be reduced (but not below zero) by the amount of any distributions on the units that are treated as non-taxable returns of capital (as discussed above under “—Distributions”"—Distributions"). Such gain or loss will be treated as long-term capital gain or loss if the U.S. Holder’sHolder's holding period is greater than one year at the time of the sale, exchange or other taxable disposition. Certain U.S. Holders (including individuals) may be eligible for preferential rates of U.S. federal income tax in respect of long-term capital gains. A U.S. Holder’sHolder's ability to deduct capital losses is subject to limitations. SuchAny such capital gain or loss generally will be treated as U.S. source income or loss, as applicable, for U.S. foreign tax credit purposes.

      Medicare Tax on Net Investment Income

    Certain U.S. Holders, including individuals, estates and trusts, will be subject to an additional 3.8% Medicare tax on, among other things, dividends and capital gains from the sale or other disposition of equity interests. For individuals, the additional Medicare tax applies to the lesser of (1) “net"net investment income”income" or (2) the excess of “modified"modified adjusted gross income”income" over $200,000 ($250,000 if married and filing jointly or $125,000 if married and filing separately). “Net"Net investment income”income" generally equals the taxpayer’staxpayer's gross investment income reduced by deductions that are allocable to such income. Unitholders should consult their tax advisors regarding the implications of the additional Medicare tax resulting from their ownership and disposition of our common units.

      PFIC Status and Significant Tax Consequences

    Adverse U.S. federal income tax rules apply to a U.S. Holder that owns an equity interest in a non-U.S. corporation that is classified as a PFIC for U.S. federal income tax purposes. In general, we arewill be treated as a PFIC with respect to a U.S. Holder if, for any taxable year in which the holder held our units, either:

      at least 75% of our gross income (including the gross income of our vessel-owning subsidiaries) for such taxable year consists of passive income (e.g., dividends, interest, capital gains from the sale or exchange of investment property and rents derived other than in the active conduct of a rental business); or



    at least 50% of the average value of the assets held by us (including the assets of our vessel-owning subsidiaries) during such taxable year produce, or are held for the production of, passive income.

    Income earned, or treated as earned (for U.S. federal income tax purposes), by us in connection with the performance of services would not constitute passive income. By contrast, rental income generally would constitute “passive income”"passive income" unless we were treated as deriving that rental income in the active conduct of a trade or business under the applicable rules.

    Based on our current and projected methods of operation, we believe that we were not a PFIC for any prior taxable year, and we expect that we will not be treated as a PFIC for the current or any future taxable year. We believe that more than 25% of our gross income for each taxable year was or will be non-passive income, and more than 50% of the average value of our assets for each such year was or will be held for the production of non-passive income. This belief is based on certain valuations and projections regarding our income and assets, and its validity is based on the accuracy of such


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    valuations and projections. While we believe these valuations and projections to be accurate, the shipping market is volatile and no assurance can be given that they will continue to be accurate at any time in the future.

    Moreover, there are legal uncertainties involved in determining whether the income derived from time-chartering activities constitutes rental income or income derived from the performance of services. InTidewater Inc. v. United States, 565 F.3d 299 (5th Cir. 2009), the Fifth Circuit held that income derived from certain time-chartering activities should be treated as rental income rather than services income for purposes of a provision of the Code relating to foreign sales corporations. In that case, the Fifth Circuit did not address the definition of passive income or the PFIC rules; however, the reasoning of the case could have implications as to how the income from a time charter would be classified under such rules. If the reasoning of the case were extended to the PFIC context, the gross income we derive from our time-chartering activities may be treated as rental income, and we would likely be treated as a PFIC. In published guidance, the IRS stated that it disagreed with the holding inTidewateTidewaterr and specified that time charters similar to those at issue in this case should be treated as service contracts.

    Distinguishing between arrangements treated as generating rental income and those treated as generating services income involves weighing and balancing competing factual considerations, and there is no legal authority under the PFIC rules addressing our specific method of operation. Conclusions in this area therefore remain matters of interpretation. We are not seeking a ruling from the IRS on the treatment of income generated from our time-chartering operations. Thus, it is possible that the IRS or a court could disagree with our position. In addition, although we intend to conduct our affairs in a manner to avoid being classified as a PFIC with respect to any taxable year, we cannot assure unitholders that the nature of our operations will not change in the future and that we will not become a PFIC in any future taxable year.

    As discussed more fully below, if we were to be treated as a PFIC for any taxable year (and regardless of whether we remain a PFIC over the subsequent taxable years), a U.S. Holder would be subject to different taxation rules depending on whether the U.S. Holder makes an election to treat us as a “Qualified"Qualified Electing Fund," which we refer to as a “QEF"QEF election." As an alternative to making a QEF election, a U.S. Holder should be able to make a “mark-to-market”"mark-to-market" election with respect to our common units, as discussed below. In addition, if a U.S. Holder owns our common units during any taxable year that we are a PFIC, such holder must file an annual report with the IRS.

      Taxation of U.S. Holders Making a Timely QEF Election

    If a U.S. Holder makes a timely QEF election (or an Electing Holder), then, for U.S. federal income tax purposes, that holder must report as income for its taxable year its pro rata share of our ordinary earnings and net capital gain, if any, for our taxable years that end with or within the taxable year for which that holder is reporting, regardless of whether or not the Electing Holder received distributions from us in that year. The Electing Holder’sHolder's adjusted tax basis in the common units will be increased to reflect taxed but undistributed earnings and profits.

            Distributions of earnings and profits that were previously taxed will result in a corresponding reduction in the Electing Holder’sHolder's adjusted tax basis in common units and will not be taxed again once distributed. An Electing Holder generally will recognize capital gain or loss on the sale, exchange or other disposition of our common units. A U.S. Holder makes a QEF election with respect to any year that we are a PFIC by filing IRS Form 8621 with its U.S. federal income tax return. If contrary to our expectations, we determine that we are treated as a PFIC for any taxable year, we will provide each U.S. Holder with the information necessary to make the QEF election described above. Although the QEF election is available with respect to subsidiaries, in the event we acquire or own a subsidiary in the future that is treated as a PFIC, no assurances can be made that we will be able to provide U.S. Holders with the necessary information to make the QEF election with respect to such subsidiary.


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      Taxation of U.S. Holders Making a “Mark-to-Market”"Mark-to-Market" Election

    If we were to be treated as a PFIC for any taxable year in which a U.S. Holder holds our common units and, as we anticipate, our units were treated as “marketable"marketable stock," then, as an alternative to making a QEF election, a U.S. Holder would be allowed to make a “mark-to-market”"mark-to-market" election with respect to our common units, provided the U.S. Holder completes and files IRS Form 8621 in accordance with the relevant instructions and related Treasury Regulations. If that election is made, the U.S. Holder generally would include as ordinary income in each taxable year the excess, if any, of the fair market value of the U.S. Holder’sHolder's common units at the end of the taxable year over the holder’sholder's adjusted tax basis in the common units. The U.S. Holder also would be permitted an ordinary loss in respect of the excess, if any, of the U.S. Holder’sHolder's adjusted tax basis in the common units over the fair market value thereof at the end of the taxable year, but only to the extent of the net amount previously included in income as a result of the mark-to-market election. A U.S. Holder’sHolder's tax basis in its common units would be adjusted to reflect any such income or loss recognized. Gain recognized on the sale, exchange or other disposition of our common units would be treated as ordinary income, and any loss recognized on the sale, exchange or other disposition of the common units would be treated as ordinary loss to the extent that such loss does not exceed the net mark-to-market gains previously included in income by the U.S. Holder. The mark-to-market election generally will not be available with respect to subsidiaries. Accordingly, in the event we acquire or own a subsidiary in the future that is treated as a PFIC, the mark-to-market election generally will not be available with respect to such subsidiary.

      Taxation of U.S. Holders Not Making a Timely QEF or Mark-to-Market Election

    If we were to be treated as a PFIC for any taxable year in which a U.S. Holder holds our common units, a U.S. Holder that does not make either a QEF election or a “mark-to-market”"mark-to-market" election for that year (or a Non-Electing Holder) would be subject to special rules resulting in increased tax liability with respect to (1) any excess distribution (i.e., the portion of any distributions received by the Non-Electing Holder on our common units in a taxable year in excess of 125% of the average annual distributions received by the Non-Electing Holder in the three preceding taxable years, or, if shorter, the Non-Electing Holder’sHolder's holding period for the common units) and (2) any gain realized on the sale, exchange or other disposition of the units. Under these special rules:

      the excess distribution or gain would be allocated ratably over the Non-Electing Holder’sHolder's aggregate holding period for the common units;



    the amount allocated to the current taxable year and any taxable year prior to the taxable year we were first treated as a PFIC with respect to the Non-Electing Holder would be taxed as ordinary income; and



    the amount allocated to each of the other taxable years would be subject to tax at the highest rate of tax in effect for the applicable class of taxpayers for that year, and an interest charge for the deemed deferral benefit would be imposed with respect to the resulting tax attributable to each such other taxable year.

    These penalties would not apply to a qualified pension, profit sharing or other retirement trust or other tax-exempt organization that did not borrow money or otherwise utilize leverage in connection with its acquisition of our common units. If we were treated as a PFIC for any taxable year and a Non-Electing Holder who is an individual dies while owning our common units, such holder’sholder's successor generally would not receive a step-up in tax basis with respect to such units.


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    U.S. Federal Income Taxation of Non-U.S. Holders

    A beneficial owner of our common units (other than a partnership or an entity or arrangement treated as a partnership for U.S. federal income tax purposes) that is not a U.S. Holder is referred to as a Non-U.S. Holder. If you are a partner in a partnership (or an entity or arrangement treated as a partnership for U.S. federal income tax purposes) holding our common units, you should consult your own tax advisor regarding the tax consequences to you of the partnership’spartnership's ownership of our common units.

      Distributions

    Distributions we pay to a Non-U.S. Holder will not be subject to U.S. federal income tax or withholding tax if the Non-U.S. Holder is not engaged in a U.S. trade or business. If the Non-U.S. Holder is engaged in a U.S. trade or business, our distributions will be subject to U.S. federal income tax to the extent theysuch distributions constitute income effectively connected with the Non-U.S. Holder’sHolder's U.S. trade or business. However,business (provided, in the case of a Non-U.S. Holder entitled to the benefits of an income tax treaty with the United States, such distributions paidalso are attributable to a U.S. permanent establishment). The after-tax amount of any effectively connected distributions received by a Non-U.S. Holder that is engaged in a corporation for U.S. trade or business may be exempt from taxation under anfederal income tax purposes may also be subject to an additional U.S. branch profits tax at a rate of 30% (or, if applicable, a lower treaty if the income arising from the distribution is not attributable to a U.S. permanent establishment maintained by the Non-U.S. Holder.rate).

      Disposition of Units

    In general, a Non-U.S. Holder is not subject to U.S. federal income tax or withholding tax on any gain resulting from the disposition of our common units provided the Non-U.S. Holder is not engaged in a U.S. trade or business. A Non-U.S. Holder that is engaged in a U.S. trade or business will be subject to U.S. federal income tax in the event the gain from the disposition of units is effectively connected with the conduct of such U.S. trade or business (provided, in the case of a Non-U.S. Holder entitled to the benefits of an income tax treaty with the United States, such gain also is attributable to a U.S. permanent establishment). The after-tax amount of any effectively connected gain of a Non-U.S. Holder that is a corporation for U.S. federal income tax purposes may also be subject to an additional U.S. branch profits tax at a rate of 30% (or, if applicable, a lower treaty rate). However, even if not engaged in a U.S. trade or business, individual Non-U.S. Holders may be subject to tax on gain resulting from the disposition of our common units if they are present in the United States for 183 days or more during the taxable year in which those units are disposed orand they meet certain other requirements.

    Backup Withholding and Information Reporting

    In general, payments to a non-corporate U.S. Holder of distributions or the proceeds of a disposition of common units will be subject to information reporting. These payments to a non-corporate U.S. Holder also may be subject to backup withholding if the non-corporate U.S. Holder:

      fails to provide an accurate taxpayer identification number;



    is notified by the IRS that it has failed to report all interest or corporate distributions required to be reported on its U.S. federal income tax returns; or



    in certain circumstances, fails to comply with applicable certification requirements.

    Non-U.S. Holders may be required to establish their exemption from information reporting and backup withholding by certifying their status on IRS Form W-8BEN, W-8BEN-E, W-8ECI or W-8IMY, as applicable.


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    Backup withholding is not an additional tax. Rather, a unitholder generally may obtain a credit for any amount withheld against its liability for U.S. federal income tax (and obtain a refund of any amounts withheld in excess of such liability) by timely filing a U.S. federal income tax return with the IRS.

    In addition, individual citizens or residents of the United States holding certain “foreign"foreign financial assets”assets" (which generally includes stock and other securities issued by a foreign person unless held in an account maintained by a financial institution) that exceed certain thresholds (the lowest being holding foreign financial assets with an aggregate value in excess of: (1) $50,000 on the last day of the tax year or (2) $75,000 at any time during the tax year) are required to report information relating to such assets. Significant penalties may apply for failure to satisfy the reporting obligations described above. Unitholders should consult their tax advisors regarding their reporting obligations, if any, that would result from their purchase, ownership or disposition of our units.

    Non-United States Tax Considerations

    Unless the context otherwise requires, references in this section to “we,” “our”"we," "our" or “us”"us" are references to KNOT Offshore Partners LP.

      Marshall Islands Tax Consequences

    Because we and our subsidiaries do not and do not expect to conduct business, transactions or operations in the Republic of the Marshall Islands, under current Marshall Islands law, unitholders that are neither citizens nor residents of the Marshall Islands and do not maintain offices in nor engage in business, transactions or operations in the Republic of the Marshall Islands will not be subject to Marshall Islands taxation or withholding on distributions, including upon distribution treated as a return of capital, we make to them as unitholders. In addition, such unitholders will not be subject to Marshall Islands stamp, capital gains or other taxes on the purchase, ownership or disposition of common units, and they will not be required by the Republic of the Marshall Islands to file Marshall Islands tax returns relating to their ownership of common units.

      Norwegian Tax Consequences

    Current and prospective unitholders who are resident in Norway for taxation purposes are urged to consult their own tax advisors regarding the potential Norwegian tax consequences to them of an investment in our common units. For this purpose, a company incorporated outside of Norway will be treated as resident in Norway in the event its central management and control is carried out in Norway.

    The discussion that follows is based upon existing Norwegian legislation and current Norwegian Tax Administration practice. Changes in these authorities may cause the tax consequences to vary substantially from the consequences of unit ownership described below. Unless the context otherwise requires, references in this section to “we,” “our”"we," "our" or “us”"us" are references to KNOT Offshore Partners LP.

    Under the Tax Act on Income and Wealth, persons not resident in Norway for taxation purposes (“("Non-Norwegian Holders”Holders") will not be subject to any taxes in Norway on income or profits in respect of the acquisition, holding, disposition or redemption of the common units, provided that:

      we are not treated as carrying on business in Norway; and



    either of the following conditions is met:



    if such holders are resident in a country that does not have an income tax treaty with Norway, such holders are not engaged in a Norwegian trade or business to which the common units are effectively connected; or

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      if such holders are resident in a country that has an income tax treaty with Norway, such holders do not have a permanent establishment in Norway to which the common units are effectively connected.

    A Non-Norwegian Holder that carries on a business in Norway through a partnership is subject to Norwegian tax on income derived from the business if managed from Norway or carried on by the Partnership in Norway.

    While we expect to conduct our affairs in such a manner that our business will not be treated as managed from or carried on in Norway at any time in the future, this determination is dependent upon the facts existing at such time, including (but not limited to) the place where our board of directors meets and the place where our management makes decisions or takes certain actions affecting our business. Our Norwegian tax counsel has advised us regarding certain measures we can take to limit the risk that our business may be treated as managed from or carried on in Norway and has concluded that, provided we adopt these measures and otherwise conduct our affairs in a manner consistent with our Norwegian tax counsel’scounsel's advice, which we intend to do, our business should not be treated as managed from or carried on in Norway for taxation purposes, and consequently, Non-Norwegian Holders should not be subject to tax in Norway solely by reason of the acquisition, holding, disposition or redemption of their common units. Nonetheless, there is no legal authority addressing our specific circumstances, and conclusions in this area remain matters of interpretation. Thus, it is possible that the Norwegian taxation authority could challenge, or a court could disagree with, our position.

    While we do not expect it to be the case, if the arrangements we propose to enter into result in our being considered to carry on business in Norway for the purposes of the Tax Act on Income and Wealth, unitholders would be considered to be carrying on business in Norway and would be required to file tax returns with the Norwegian Tax Administration and, subject to any relief provided in any relevant double taxation treaty (including, in the case of holders resident in the United States, the U.S.-Norway Tax Treaty), would be subject to taxation in Norway on any income considered to be attributable to the business carried on in Norway.

      United Kingdom Tax Consequences

    The following is a discussion of the material United Kingdom tax consequences that may be relevant to prospective unitholders who are persons not resident in the United Kingdom for taxation purposes and who do not acquire their units as part of a trade, profession or vocation carried on in the United Kingdom, which we refer to as “Non-UK"Non-UK Holders."

    Prospective unitholders who are resident or domiciled in the United Kingdom for taxation purposes, or who hold their units through a trade, profession or vocation in the United Kingdom are urged to consult their own tax advisors regarding the potential United Kingdom tax consequences to them of an investment in our common units and are responsible for filing their own UK tax returns and paying any applicable UK taxes (which may be due on amounts received by us but not distributed). The discussion that follows is based upon current United Kingdom tax law and what is understood to be the current practice of HMRC as at the date of this document, both of which are subject to change, possibly with retrospective effect.

    Taxation of income and disposalsdisposals..    We expect to conduct our affairs so that Non-UK Holders should not be subject to United Kingdom income tax, capital gains tax or corporation tax on income or gains arising from our partnership. Distributions may be made to Non-UK Holders without withholding or deduction for or on account of United Kingdom income tax.

    Stamp taxestaxes..    No liability to United Kingdom stamp duty or stamp duty reserve tax should arise in connection with the issue of units to unitholders or the transfer of units in our partnership.


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    EACH PROSPECTIVE UNITHOLDER IS URGED TO CONSULT ITS OWN TAX COUNSEL OR OTHER ADVISOR WITH REGARD TO THE LEGAL AND TAX CONSEQUENCES OF UNIT OWNERSHIP UNDER ITS PARTICULAR CIRCUMSTANCES.

      F. Dividends and Paying Agents

    Not applicable.

      G. Statement by Experts

    Not applicable.

      H. Documents on Display

    Documents concerning us that are referred to in this Annual Report may be inspected at our principal executive headquarters at 2 Queen’sQueen's Cross, Aberdeen, Aberdeenshire AB15 4YB, United Kingdom.Kingdom, and may also be obtained from our website at www.knotoffshorepartners.com. Those documents electronically filed via the SEC’sSEC's Electronic Data Gathering, Analysis, and Retrieval system may also be obtained from the SEC’sSEC's website atwww.sec.gov, free of charge, or from the SEC’s Public Reference Section at 100 F Street, NE, Washington, D.C. 20549, at prescribed rates. Further information on the operation of the SEC Public Reference Section may be obtained by calling the SEC at 1-800-SEC-0330. www.sec.gov.

      I. Subsidiary Information

    Not applicable.

    Item 11.    Quantitative and Qualitative Disclosures About Market Risk

    We are exposed to various market risks, including interest rate, foreign currency exchange rate and concentration of credit risks. Historically, we have entered into certain derivative instruments and contracts to maintain the desired level of exposure arising from interest rate and certain foreign currency exchange rate risks.

    Our policy is to economically hedge our exposure to risks, where possible, within boundaries deemed appropriate by management.

      Interest Rate Risk

    A portion of our debt obligations and surplus funds placed with financial institutions are subject to movements in interest rates. It is our policy to obtain the most favorable interest rates available without increasing our foreign currency exposure. In keeping with this, our surplus funds may in the future be placed in fixed deposits with reputable financial institutions that yield better returns than bank deposits. The deposits generally have short-term maturities so as to provide us with the flexibility to meet working capital and capital investments.

    We have historically used interest rate swap contracts to manage our exposure to interest rate risks. Interest rate swap contracts were used to convert floating rate debt obligations based on LIBOR to a fixed rate in order to achieve an overall desired position of fixed and floating rate debt. The extent to which interest rate swap contracts are used is determined by reference to our net debt exposure and our views regarding future interest rates. Our interest rate swap contracts do not qualify for hedge accounting, and movements in their fair values are reflected in the statements of operations under “Realized"Realized and unrealized gain (loss) on derivative instruments." Interest rate swap contracts that have a positive fair value are recorded as “Other"Other current assets," while swaps with a negative fair value are recorded as “Derivative"Derivative liabilities.

    "

    As of December 31, 2015,2018, we were party to interest rate swap contracts with a combined notional amount of approximately $410.0$555.5 million. Under the terms of the interest rate swap contracts, we


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    receive LIBOR-based variable interest rate payments and make fixed interest rate payments at fixed rates between 1.25%1.38% per annum and 2.49%2.89% per annum for all periods. The interest rate swap contracts mature between March 2018July 2020 and January 2024.August 2027. The notional amount and fair value of our interest rate swap contracts recognized as net derivative liabilities as of December 31, 20152018 are as follows:

     
     December 31, 2018 
    (U.S. Dollars in thousands)
     Notional Amount Fair Value (asset) 

    Interest rate swap contracts

     $555,541 $15,943 

            

       December 31, 2015 
    (U.S. Dollars in thousands)  Notional Amount   Fair Value
    (Liability)
     

    Interest rate swap contracts

      $410,041    $3,631  

    As of December 31, 2015,2018, our net exposure to floating interest rate fluctuations on our outstanding debt was approximately $238.1$490.1 million, based on our total interest bearinginterest-bearing debt of approximately $671.7$1,087.3 million, less the notional amount of our floating to fixed interest rate swap contracts of approximately $410.0$555.5 million, and less cash and cash equivalents of $23.6$41.7 million. A 1% change in short-term interest rates would result in an increase or decrease to our interest expense of approximately $2.4$4.9 million on an annual basis as of December 31, 2015.2018. Please read Note 10—Derivative Instruments—Interest Rate Risk Management in the consolidated and combined carve-out financial statements included in this Annual Report.

      Foreign Currency Exchange Rate Risk

    We and our subsidiaries have the U.S. Dollar as our functional and reporting currency, because all of our revenues and the majority of our expenditures, including the majority of our investments in vessels and our financing transactions, are denominated in U.S. Dollars. We could, however, earn revenue in other currencies, and we currently incur a portion of our expenses in other currencies. Therefore, there is a risk that currency fluctuations could have an adverse effect on the value of our cash flows.

    Our foreign currency risk arises from:

      the measurement of monetary assets and liabilities denominated in foreign currencies converted to U.S. Dollars, with the resulting gain or loss recorded as “Net"Net loss on foreign currency transactions;" and



    the impact of fluctuations in exchange rates on the reported amounts of our revenues, if any, and expenses that are denominated in foreign currencies.

    As of December 31, 2015,2018, we had entered into foreign exchange forward contracts, selling a total notional amount of $35.0$30.0 million against NOK at an average exchange rate of NOK 8.28058.14 per 1 U.S. Dollar, which are economic hedges for certain vessel operating expenses and general expenses in NOK. We did not apply hedge accounting to our foreign exchange forward contracts.

      Concentration of Credit Risk

    The market for our services is the offshore oil transportation industry, and our customers consist primarily of major oil and gas companies, independent oil and gas producers and government-owned oil companies. As of December 31, 20152018 and 2014, six and five2017, seven customers respectively, accounted for substantially all of our revenues. Ongoing credit evaluations of our customers are performed and generally do not require collateral in our business agreements. Typically, under our time charters and bareboat charters, the customer pays for the month’smonth's charter the first day of each month, which reduces our level of credit risk. Provisions for potential credit losses are maintained when necessary.

    We have bank deposits that expose us to credit risk arising from possible default by the counterparty. We manage the risk by using credit-worthy financial institutions.


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      Retained Risk

    For a description of our insurance coverage, including the risks retained by us related to our insurance policies, please read “Item"Item 4. Information on the Partnership—Business Overview—Risk of Loss, Insurance and Risk Management."

    Item 12.    Description of Securities Other than Equity Securities

    Not applicable.


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    PART II

    Item 13.    Defaults, Dividend Arrearages and Delinquencies

    As of December 31, 2015,2018, we were in compliance with all covenants under our debt agreements.

    Item 14.    Material Modifications to the Rights of Securities Holders and Use of Proceeds

    Not applicable.

    Item 15.    Controls and Procedures

    Disclosure Controls and Procedures

    We maintain disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the U.S. Securities and Exchange Act of 1934, as amended (the “Exchange Act”"Exchange Act")) that are designed to ensure that (i) information required to be disclosed in our reports that are filed or submitted under the Exchange Act, are recorded, processed, summarized, and reported within the time periods specified in the U.S. Securities and Exchange Commission’sCommission's rules and forms, and (ii) information required to be disclosed by us in the reports we file or submit under the Exchange Act is accumulated and communicated to our management, including the Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

    We conducted an evaluation of our disclosure controls and procedures under the supervision and with the participation of the Chief Executive Officer and Chief Financial Officer. Based on the evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures are effective as of December 31, 2015.2018.

    The Chief Executive Officer and Chief Financial Officer does not expect that our disclosure controls or internal controls will prevent all errors and all fraud. Although our disclosure controls and procedures were designed to provide reasonable assurance of achieving their objectives, a control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within the Partnership have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty, and that breakdowns can occur because of simple error or mistake. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the control. The design of any system of controls also is based partly on certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions.

    Management’sManagement's Annual Report on Internal Control over Financial Reporting

    Our management is responsible for establishing and maintaining for us adequate internal controls over financial reporting.

    Our internal controls were designed to provide reasonable assurance as to the reliability of our financial reporting and the preparation and presentation of the consolidated financial statements for external purposes in accordance with accounting principles generally accepted in the United States. Our internal controls over financial reporting include those policies and procedures that: 1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of our assets; 2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of the financial statements in accordance with generally accepted accounting


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    principles, and that our receipts and expenditures are being made in accordance with authorizations of management and the directors; and 3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on the financial statements.

    We conducted an evaluation of the effectiveness of our internal control over financial reporting based upon the framework in Internal Control – Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. This evaluation included review of the documentation of controls, evaluation of the design effectiveness of controls, testing of the operating effectiveness of controls and a conclusion on this evaluation.

    Because of its inherent limitations, internal controls over financial reporting may not prevent or detect misstatements even when determined to be effective and can only provide reasonable assurance with respect to financial statement preparation and presentation. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies and procedures may deteriorate. However, based on the evaluation, management has concluded that our internal controls over financial reporting were effective as of December 31, 2015.

    2018.

    There were no changes in our internal controls that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting (as defined in Rule 13a–15(f)13a-15(f) under the Exchange Act) that occurred during the year ended December 31, 2015.2018.

    Attestation Report of the Registered Public Accounting Firm

    This Annual Report does not include an attestation report        The effectiveness of the Partnership’sPartnership's internal control over financial reporting as of December 31, 2018 has been audited by Ernst & Young AS, an independent registered public accountingaccouting firm, due to a transition period established by rulesas stated in its report which appears on page F-3 of the SEC for emerging growth companies.our consolidated financial statements.

    Changes in Internal Control over Financial Reporting

    There were no changes in our internal control over financial reporting that occurred during the period covered by this Annual Report that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

    Item 16A.    Audit Committee Financial Expert

    Our board of directors has determined that Hans Petter Aas qualifies as an audit committee financial expert and is independent under applicable NYSE and SEC standards.

    Item 16B.    Code of Ethics

    We have adopted the KNOT Offshore Partners LP Code of Business Conduct and Ethics that applies to all of our employees, officers and directors. This document is available under the “Corporate Governance”"Corporate Governance" tab in the “Investor Relations”"Investor Relations" section of our website (www.knotoffshorepartners.com). We intend to disclose, under this tab of our website, any waivers to or amendments of the KNOT Offshore Partners LP Corporate Code of Business Ethics and Conduct for the benefit of any of our directors and executive officers.

    Item 16C.    Principal Accountant Fees and Services

    Our principal accountant for 20152018 was Ernst & Young AS.

    The audit committee of our board of directors has the authority to pre-approve permissible audit-related and non-audit services not prohibited by law to be performed by our independent auditors and


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    associated fees. Engagements for proposed services either may be separately pre-approved by the audit committee or entered into pursuant to detailed pre-approval policies and procedures established by the audit committee, as long as the audit committee is informed on a timely basis of any engagement entered into on that basis. The audit committee separately pre-approved all engagements and fees paid to our principal accountant in 20152018 and 2014.2017.

    Fees Incurred by the Partnership for Ernst & Young AS’ ServicesAS' Services:

     
     2018 2017 

    Audit Fees

     $803,994 $703,924 

    Audit-Related Fees

      43,858  55,128 

    Tax Fees

      3,399  2,815 

     $851,252 $761,867 

    Audit Fees

            

       2015   2014 

    Audit Fees

      $492,326    $678,279  

    Audit-Related Fees

       97,597     219,020  

    Tax Fees

       4,067     13,048  

    All Other Fees

       —       —    
      

     

     

       

     

     

     
      $593,990    $910,347  

    Audit Fees

    Audit fees for 20152018 and 20142017 are the aggregate fees billed for professional services rendered by the principal accountant for the audit of the Partnership’sPartnership's annual financial statements and services normally provided by the principal accountant in connection with statutory and regulatory filings or engagements.engagements, including services related to comfort letters, consents and assistance with and review of documents filed with the SEC.

    Audit-Related Fees

    Audit-related fees for 20152018 and 20142017 are the aggregate fees billed for professional services rendered by the principal accountant related primarily to assurance work in connection with the comfort lettersaccounting consultations and reviews of prospectuses associated with our public offerings in June 2014 and June 2015 that have not been reported under “—Audit Fees” aboveacquisitions.

    Tax Fees

    Tax fees for 20152018 and 20142017 are the aggregate fees billed for professional services rendered by the principal accountant related primarily to tax compliance services.

    Item 16D.    Exemptions from the Listing Standards for Audit Committees

    Not applicable.

    Item 16E.    Purchases of Equity Securities by the Issuer and Affiliated Purchasers

            Not applicable.

    Period(1)

      Total number
    of common
    units
    purchased(2)
       Average
    price paid
    per common
    unit
       Total number of
    common units
    purchased as part of

    all publicly
    announced plans or
    programs(2)
       Maximum number of
    common units that may
    yet be purchased under
    such plans or programs
     

    August 1, 2015–August 31, 2015

       —      $—       —       1,000,000  

    September 1, 2015–September 30, 2015

       —      $—       —       1,000,000  

    October 1, 2015–October 31, 2015

       —      $—       —       1,000,000  

    November 1, 2015–November 30, 2015

       9,280    $13.99     9,280     990,720  

    December 1, 2015–December 31, 2015

       261,994    $12.66     261,994     728,726  

    (1)No common units were purchased by the issuer or affiliated purchasers during the period January 1, 2015 through July 31, 2015.
    (2)On August 12, 2015, the Partnership announced a program for the Partnership to repurchase up to 666,667 of its common units and for our general partner concurrently to purchase up to 333,333 common units of the Partnership. All purchases of common units were at prevailing prices on the open market. All purchases of common units set forth in the table above were made pursuant to this program. Approximately one third of the common units purchased under the program were purchased by our general partner (90,368 common units) and approximately two thirds were purchased by the Partnership (180,906 common units). The program will conclude by August 31, 2016.

    Item 16F.    Change in Registrants’Registrants' Certifying Accountant

    Not applicable.

    Item 16G.    Corporate Governance

    Overview

    Pursuant to an exemption under the NYSE listing standards for foreign private issuers, the Partnership is not required to comply with the corporate governance practices followed by U.S. companies under the NYSE listing standards. However, pursuant to Section 303A.11 of the NYSE Listed Company Manual, we are required to state any significant differences between our governance practices and the practices required by the NYSE for U.S. companies. We believe that our established


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    practices in the area of corporate governance are in line with the spirit of the NYSE standards and provide adequate protection to our unitholders. The significant differences between our corporate governance practices and the NYSE standards applicable to listed U.S. companies are set forth below.

    Independence of Directors

    The NYSE rules do not require a listed company that is a foreign private issuer to have a board of directors that is comprised of a majority of independent directors. Under Marshall Islands law, we are not required to have a board of directors comprised of a majority of directors meeting the independence standards described in the NYSE rules. In addition, the NYSE rules do not require limited partnerships like us to have boards of directors comprised of a majority of independent directors. However, our board of directors has determined that each of Hans Petter Aas, Edward A. Waryas, Jr., Simon Bird and Andrew Beveridge satisfies the independence standards established by the NYSE as applicable to us.

    Executive Sessions

    The NYSE requires that non-management directors of a listed U.S. company meet regularly in executive sessions without management. The NYSE also requires that all independent directors of a listed U.S. company meet in an executive session at least once a year. As permitted under Marshall Islands law and our partnership agreement, our non-management directors do not regularly hold executive sessions without management and we do not expect them to do so in the future.

    Nominating/Corporate Governance Committee

    The NYSE requires that a listed U.S. company have a nominating/corporate governance committee of independent directors and a committee charter specifying the purpose, duties and evaluation procedures of the committee. As permitted under Marshall Islands law and our partnership agreement, we do not currently have a nominating or corporate governance committee.

    Compensation Committee

    The NYSE requires that a listed U.S. company have a compensation committee of independent directors and a committee charter specifying the purpose, duties and evaluation procedures of the committee. As permitted under Marshall Islands law and our partnership agreement, we do not currently have a compensation committee.

    Corporate Governance Guidelines

    The NYSE requires listed U.S. companies to adopt and disclose corporate governance guidelines. The guidelines must address, among other things: director qualification standards, director responsibilities, director access to management and independent advisers, director compensation, director orientation and continuing education, management succession and an annual performance evaluation. We are not required to adopt such guidelines under Marshall Islands law, and we have not adopted such guidelines.

    We make available a statement of significant differences on our website (www.knotoffshorepartners.com).

    We believe that our established corporate governance practices satisfy the NYSE listing standards.

    Item 16H.    Mine Safety Disclosure

    Not applicable.


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    PART III

    Item 17.    Financial Statements

    Not applicable.

    Item 18.    Financial Statements

    The following financial statements listed below and set forth on pages F-3F-4 through F-43,F-64, together with the related reports of Ernst & Young AS, Independent Registered Public Accounting Firm thereon, are filed as part of this Annual Report:

    All other schedules for which provision is made in the applicable accounting regulations of the SEC are not required, are inapplicable or have been disclosed in the notes to the consolidated and combined carve-out financial statements and therefore have been omitted.

    Item 19.    Exhibits

    The following exhibits are filed as part of this Annual Report:

    Exhibit
    Number
    Description

    Exhibit

    Number

    1.1 

    Description

        1.1Certificate of Limited Partnership of KNOT Offshore Partners LP (incorporated by reference to Exhibit 3.1 to the registrant’sregistrant's Form F-1 Registration Statement (333-186947), filed on February 28, 2013)


    1.2

     
    First
    Third Amended and Restated Agreement of Limited Partnership of KNOT Offshore Partners LP, dated April 15, 2013, between KNOT Offshore Partners GP LLC and Knutsen NYK Offshore Tankers ASas of June 30, 2017 (incorporated by reference to Exhibit 1.23.2 of the registrant’s Annualregistrant's Report on Form 20-F for fiscal year ended December 31, 20138-A/A filed on April 15, 2014)June 30, 2017)


    4.1

     
    Contribution and Sale Agreement, dated April 15, 2013, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Offshore Partners GP LLC, KNOT Offshore Partners UK LLC and KNOT Shuttle Tankers AS (incorporated by reference to Exhibit 4.1 of the registrant’s Annual Report on Form 20-F for fiscal year ended December 31, 2013 filed on April 15, 2014)
        4.2
    Omnibus Agreement, dated April 15, 2013, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Offshore Partners GP LLC, KNOT Shuttle Tankers 17 AS and KNOT Shuttle Tankers 18 AS (incorporated by reference to Exhibit 4.2 of the registrant’sregistrant's Annual Report on Form 20-F for fiscal year ended December 31, 2013 filed on April 15, 2014)

        4.3
    4.2

     

    Administrative Services Agreement, dated February 26, 2013, among KNOT Offshore Partners LP, KNOT Offshore Partners UK LLC, Knutsen OAS (UK) Ltd. and Knutsen OAS Shipping AS (incorporated by reference to Exhibit 10.3 to the registrant’sregistrant's Amendment No. 1 to Form F-1 Registration Statement (333-186947), filed on March 19, 2013)

        4.4
    4.3

     

    Amendment No. 1 to the Administrative Services Agreement, dated May 7, 2015, between KNOT Offshore Partners LP, KNOT Offshore Partners UK LLC, Knutsen OAS (UK) Ltd., Knutsen OAS Shipping AS and KNOT Management AS (incorporated by reference to Exhibit 4.1 to the registrant’sregistrant's report on Form 6-K filed on June 2, 2015)

    Table of Contents

        4.5Exhibit
    Number
    Description
     4.4*Amendment No. 2 to the Administrative Services Agreement, dated November 28, 2018, between KNOT Offshore Partners LP, KNOT Offshore Partners UK LLC, Knutsen OAS (UK) Ltd., Knutsen OAS Shipping AS and KNOT Management AS


    4.5

    *

    Amendment No. 3 to the Administrative Services Agreement, dated March 13, 2019, between KNOT Offshore Partners LP, KNOT Offshore Partners UK LLC, Knutsen OAS (UK) Ltd., Knutsen OAS Shipping AS and KNOT Management AS


    4.6


    Form of Ship Management Agreement, for the Bodil Knutsen, dated October 28, 2010, between KNOT Shuttle Tankers 17 AS and KNOT Management AS, as amended (incorporated by reference to Exhibit 10.4 to the registrant’sregistrant's Form F-1 Registration Statement (333-186947), filed on February 28, 2013)

    Exhibit

    Number



    4.7

    Description


        4.6
    Form of Ship Management Agreement, for the Windsor Knutsen, dated November 10, 2010, between KNOT Shuttle Tankers 18 AS and KNOT Management AS, as amended (incorporated by reference to Exhibit 10.5 to the registrant’s Form F-1 Registration Statement (333-186947), filed on February 28, 2013)
        4.7Ship Management Agreement for the Carmen Knutsen, dated June 27, 2011, between Knutsen Shuttle Tankers 13 AS and KNOT Management AS, as amended (incorporated by reference to Exhibit 4.6 of the registrant’s Annual Report on Form 20-F for fiscal year ended December 31, 2013 filed on April 15, 2014)
        4.8Ship Management Agreement for the Hilda Knutsen, dated June 27, 2011, between Knutsen Shuttle Tankers 14 AS and KNOT Management AS, as amended (incorporated by reference to Exhibit 10.3 to the registrant’s report on Form 6-K filed on July 14, 2014)
        4.9Ship Management Agreement for the Torill Knutsen, dated June 27, 2011, between Knutsen Shuttle Tankers 15 AS and KNOT Management AS, as amended (incorporated by reference to Exhibit 10.4 to the registrant’s report on Form 6-K filed on July 14, 2014)
        4.10Ship Management Agreement for the Ingrid Knutsen, dated May 30, 2012, between Knutsen NYK Shuttle Tankers 16 AS and KNOT Management AS, as amended (incorporated by reference to Exhibit 4.3 to the registrant’s report on Form 6-K filed on December 3, 2015)
        4.11*Ship Management Agreement for the Fortaleza Knutsen, dated October 28, 2010, between Knutsen Shuttle Tankers XII KS and KNOT Management AS, as amended
        4.12*Ship Management Agreement for the Recife Knutsen, dated October 28, 2010, between Knutsen Shuttle Tankers XII KS and KNOT Management AS, as amended
        4.13Ship Management Agreement for the Dan Cisne, dated May 13, 2014, between KNOT Shuttle Tankers 20 AS and KNOT Management Denmark AS, as amended (incorporated by reference to Exhibit 4.9 of the registrant’sregistrant's Annual Report on Form 20-F for fiscal year ended December 31, 2014 filed on March 25, 2015)

        4.14
    4.8

     
    Ship Management Agreement for the Dan Sabia, dated May 13, 2014, between KNOT Shuttle Tankers 21 AS and KNOT Management Denmark AS, as amended (incorporated by reference to Exhibit 4.2 to the registrant’s report on Form 6-K filed on June 29, 2015)
        4.15Term Facility
    Loan Agreement, dated June 10, 2014, among Knutsen Shuttle Tankers XII KS, as borrower, and the other parties thereto (incorporated by reference to Exhibit 10.1 to the registrant’s report on Form 6-K filed on December 9, 2014)
        4.16Term and Revolving Facilities Agreement, dated June 10, 2014, among KNOT Shuttle Tankers 18 AS, Knot Shuttle Tankers 17 AS and Knutsen Shuttle Tankers 13 AS, as borrowers, and the other parties thereto (incorporated by reference to Exhibit 10.1 to the registrant’s report on Form 6-K filed on June 27, 2014)
        4.17Amended and Restated Term Loan Facility Agreement, dated July 11, 2011,March 31, 2017, among Knutsen Shuttle Tankers 14 AS, as borrower, and the other parties thereto,Mitsubishi UFJ Lease & Finance (Hong Kong) Limited, as amended and restated by the First Supplemental Agreement, dated October 5, 2011, the Second Supplemental Agreement, dated January 23, 2014, and the Third Supplemental Agreement, dated June 26, 2014lender (incorporated by reference to Exhibit 10.14.3 to the registrant’sregistrant's report on Form 6-K filed on July 14, 2014)August 10, 2017)

        4.18
    4.9

     
    Amended and Restated Term Loan
    Facility Agreement, dated November 3, 2011,8, 2017, among Knutsen Shuttle Tankers 15 AS, as borrower, and the other parties thereto as amended by an amendment letter, dated October 23, 2013, and as amended and restated by the First Supplemental Agreement, dated February 12, 2014, and the Second Supplemental Agreement, dated June 26, 2014 (incorporated by reference to Exhibit 10.24.9 to the registrant’s reportregistrant's Annual Report on Form 6-K20-F for fiscal year ended December 31, 2017 filed on July 14, 2014)April 25, 2018)

        4.19
    4.10

     

    Senior Secured Credit Facilities Agreement, dated April 3, 2014, among KNOT Shuttle Tankers 20 AS and KNOT Shuttle Tankers 21 AS, as borrowers, and the other parties thereto (incorporated by reference to Exhibit 4.15 of the registrant’sregistrant's Annual Report on Form 20-F for fiscal year ended December 31, 2014 filed on March 25, 2015)

        4.20
    4.11

     

    Accession Letter, dated December 15, 2014, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers 20 AS and Sumitomo Mitsui Banking Corporation Europe Limited (incorporated by reference to Exhibit 4.16 of the registrant’sregistrant's Annual Report on Form 20-F for fiscal year ended December 31, 2014 filed on March 25, 2015)

    Exhibit

    Number



    4.12

    Description


        4.21
    Letter Agreement, dated June 15, 2015, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers 20 AS and Sumitomo Mitsui Banking Corporation Europe Limited, relating to the Accession Letter, dated December 15, 2014 (incorporated by reference to Exhibit 4.1 to the registrant’sregistrant's report on Form 6-K filed on June 29, 2015)

        4.22
    4.13

     
    Amended and Restated Term Loan
    Facility Agreement, dated June 7, 2012,December 17, 2014, among Knutsen NYK Shuttle Tankers 1619 AS, as borrower, and the other parties thereto, as amended and restated by the First SupplementalAmendment Agreement No. 1, dated February 5, 2015, and the Second Supplemental Agreement, dated October 13, 2015November 29, 2016 (incorporated by reference to Exhibit 4.2 to the registrant’sregistrant's report on Form 6-K filed on December 3, 2015)5, 2016)


    4.14


    Accession Letter, dated November 30, 2016, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, Knutsen Shuttle Tankers 19 AS and Sumitomo Mitsui Banking Corporation Europe Limited (incorporated by reference to Exhibit 4.3 to the registrant's report on Form 6-K filed on December 5, 2016)


    Table of Contents

    Exhibit
    Number
    Description
     4.234.15 Facilities Agreement, dated April 27, 2015, among KNOT Shuttle Tankers 24 AS, KNOT Shuttle Tankers 25 AS and KNOT Shuttle Tankers 26 AS, as borrowers, and the other parties thereto, as amended and restated on October 23, 2015 (incorporated by reference to Exhibit 4.27 of the registrant's Annual Report on Form 20-F for fiscal year ended December 31, 2016 filed on March 17, 2017)


    4.16


    Accession Letter, dated February 28, 2017, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers AS, KNOT Shuttle Tankers 24 AS, KNOT Shuttle Tankers 25 AS, KNOT Shuttle Tankers 26 AS and DNB Bank ASA (incorporated by reference to Exhibit 4.28 of the registrant's Annual Report on Form 20-F for fiscal year ended December 31, 2016 filed on March 17, 2017)


    4.17


    Accession Letter, dated June 1, 2017, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers AS, KNOT Shuttle Tankers 24 AS, KNOT Shuttle Tankers 25 AS, KNOT Shuttle Tankers 26 AS and DNB Bank ASA (incorporated by reference to Exhibit 4.1 to the registrant's report on Form 6-K filed on August 10, 2017)


    4.18


    Accession Letter, dated September 29, 2017, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers AS, KNOT Shuttle Tankers 24 AS, KNOT Shuttle Tankers 25 AS, KNOT Shuttle Tankers 26 AS and DNB Bank ASA (incorporated by reference to Exhibit 4.2 to the registrant's report on Form 6-K filed on November 6, 2017)


    4.19


    Term Loan Facility Agreement, dated June 27, 2017, among KNOT Shuttle Tankers 32 AS, as borrower, and the other parties thereto, as amended by Amendment Agreement No. 1, dated December 15, 2017 (incorporated by reference to Exhibit 4.21 to the registrant's Annual Report on Form 20-F for fiscal year ended December 31, 2017 filed on April 25, 2018)


    4.20


    Accession Letter, dated December 15, 2017, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers AS, KNOT Shuttle Tankers 32 AS and ABN AMRO Bank N.V. (incorporated by reference to Exhibit 4.22 to the registrant's Annual Report on Form 20-F for fiscal year ended December 31, 2017 filed on April 25, 2018)


    4.21


    Term Loan Facility Agreement, dated September 30, 2016, among KNOT Shuttle Tankers 30 AS, as borrower, and the other parties thereto (incorporated by reference to Exhibit 4.23 to the registrant's Annual Report on Form 20-F for fiscal year ended December 31, 2017 filed on April 25, 2018)


    4.22


    Accession Letter, dated March 1, 2018, among Knutsen NYK Offshore Tankers AS, KNOT Offshore Partners LP, KNOT Shuttle Tankers AS, KNOT Shuttle Tankers 30 AS and Nordea Bank AB (incorporated by reference to Exhibit 4.24 to the registrant's Annual Report on Form 20-F for fiscal year ended December 31, 2017 filed on April 25, 2018)


    4.23


    Term Loan and Revolving Credit Facilities Agreement, dated September 4, 2018, among KNOT Shuttle Tankers AS, Knutsen Shuttle Tankers XII KS, Knutsen Shuttle Tankers 13 AS, Knutsen NYK Shuttle Tankers 16 AS, KNOT Shuttle Tankers 17 AS, KNOT Shuttle Tankers 18 AS, as borrowers, the other parties thereto (incorporated by reference to Exhibit 4.1 to the registrant's report on Form 6-K filed on September 4, 2018)


    4.24


    Employment Agreement, dated May 7, 2015, between KNOT Offshore Partners UK LLC and John Costain (incorporated by reference to Exhibit 4.2 to the registrant’sregistrant's report on Form 6-K filed on June 2, 2015)

    Table of Contents

        4.24Exhibit
    Number
    Description
     4.25*Employment Agreement, dated March 28, 2013,12, 2019, between KNOT Offshore Partners UK LLC and Arild Vik (incorporated by reference to Exhibit 10.10 to the registrant’s Amendment No. 2 to Form F-1 Registration Statement (333-186947), filed on April 1, 2013)Gary Chapman.

        4.25†
    4.26

     
    Fortaleza Knutsen Standard Bareboat Charter Party, dated November 14, 2007, between Knutsen Shuttle Tankers XII KS and Fronape International Company/Petrobras Transporte S.A.-Transpetro, novated by the Novation Agreement, dated June 27, 2012, between Knutsen Shuttle Tankers XII KS, Knutsen OAS Shipping AS, Fronape International Company, Petrobras Transporte S.A.-Transpetro and Fronape International Company B.V. (incorporated by reference to Exhibit 10.11 to the registrant’s Form F-1 Registration Statement (333-186947), filed on February 28, 2013)
        4.26†Recife Knutsen Standard Bareboat Charter Party, dated November 14, 2007, between Knutsen Shuttle Tankers XII KS and Fronape International Company/Petrobras Transporte S.A.-Transpetro, novated by the Novation Agreement, dated June 29, 2012, between Knutsen Shuttle Tankers XII KS, Knutsen OAS Shipping AS, Fronape International Company, Petrobras Transporte S.A.-Transpetro and Fronape International Company B.V. (incorporated by reference to Exhibit 10.12 to the registrant’s Form F-1 Registration Statement (333-186947), filed on February 28, 2013)
        4.27Windsor Knutsen Time Charter Party, dated July 29, 2014, between KNOT Shuttle Tankers 18 AS and KNOT Shuttle Tankers Pool AS (incorporated by reference to Exhibit 10.1 to the registrant’s report on Form 6-K filed on September 26, 2014)
        4.28†Bodil Knutsen Time Charter Party, dated October 7, 2010, between Knutsen Bøyelaster VI KS and Statoil ASA, amended by Addendum No. 1, dated March 29, 2011, between Knutsen Bøyelaster VI KS and Statoil ASA and novated by the Novation Agreement, dated February 18, 2013, between Knutsen Bøyelaster VI KS, KNOT Shuttle Tankers 17 AS and Statoil ASA (incorporated by reference to Exhibit 10.14 to the registrant’s Form F-1 Registration Statement (333-186947), filed on February 28, 2013)
        4.29Share Purchase Agreement, dated July 11, 2013, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS (incorporated by reference to Exhibit 4.21 of the registrant’s Annual Report on Form 20-F for fiscal year ended December 31, 2013 filed on April 15, 2014)
        4.30Share Purchase Agreement, dated June 23, 2014, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS (incorporated by reference to Exhibit 10.2 to the registrant’s report on Form 6-K filed on June 27, 2014)
        4.31Share Purchase Agreement, dated June 23, 2014, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS (incorporated by reference to Exhibit 10.3 to the registrant’s report on Form 6-K filed on June 27, 2014)
        4.32Share Purchase Agreement, dated December 10, 2014, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS, as amended (incorporated by reference to Exhibit 4.27 of the registrant’s Annual Report on Form 20-F for fiscal year ended December 31, 2014 filed on March 25, 2015)
        4.33Seller’s Credit, dated December 15, 2014, between KNOT Shuttle Tankers AS and Knutsen NYK Offshore Tankers AS (incorporated by reference to Exhibit 4.28 of the registrant’s Annual Report on Form 20-F for fiscal year ended December 31, 2014 filed on March 25, 2015)
        4.34
    Share Purchase Agreement, dated May 27, 2015, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS (incorporated by reference to Exhibit 4.3 to the registrant’s report on Form 6-K filed on June 2, 2015)
        4.35Share Purchase Agreement, dated October 13, 2015,16, 2017, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS (incorporated by reference to Exhibit 4.1 ofto the registrant’sregistrant's report on Form 6-K filed on May 17, 2017)


    4.27


    Addendum, dated May 30, 2017, to Share Purchase Agreement, dated May 16, 2017, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS (incorporated by reference to Exhibit 4.4 to the registrant's report on Form 6-K filed on August 10, 2017)


    4.28


    Share Purchase Agreement, dated August 9, 2017, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS (incorporated by reference to Exhibit 4.5 to the registrant's report on Form 6-K filed on August 10, 2017)


    4.29


    Addendum, dated September 26, 2017, to Share Purchase Agreement, dated August 9, 2017, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS (incorporated by reference to Exhibit 4.1 to the registrant's report on Form 6-K filed on November 6, 2017)


    4.30


    Share Purchase Agreement, dated December 15, 2017, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS (incorporated by reference to Exhibit 4.32 to the registrant's Annual Report on Form 20-F for fiscal year ended December 31, 2017 filed on April 25, 2018)


    4.31


    Share Purchase Agreement, dated February 20, 2018, between Knutsen NYK Offshore Tankers AS and KNOT Shuttle Tankers AS (incorporated by reference to Exhibit 4.33 to the registrant's Annual Report on Form 20-F for fiscal year ended December 31, 2017 filed on April 25, 2018)


    4.32


    Series A Preferred Unit Purchase Agreement, dated December 6, 2016, among KNOT Offshore Partners LP and the Purchasers party thereto (incorporated by reference to Exhibit 4.1 to the registrant's report on Form 6-K filed on December 3, 2015)6, 2016)


    4.33


    Assignment and Novation Agreement, dated December 20, 2016, among Offshore Merchant Partners Asset Yield Fund,  L.P., OMP AY Preferred Limited and KNOT Offshore Partners LP (incorporated by reference to Exhibit 4.1 to the registrant's report on Form 6-K filed on February 2, 2017)


    4.34


    First Amendment to Series A Preferred Unit Purchase Agreement, dated February 2, 2017, among KNOT Offshore Partners LP and the Purchasers party thereto (incorporated by reference to Exhibit 4.2 to the registrant's report on Form 6-K filed on February 2, 2017)


    4.35


    Second Amendment to Series A Preferred Unit Purchase Agreement, dated May 16, 2017, between KNOT Offshore Partners LP and the Purchasers party thereto (incorporated by reference to Exhibit 4.2 to the registrant's report on Form 6-K filed on May 17, 2017)


    4.36


    Joinder Agreement, dated June 30, 2017, among KNOT Offshore Partners LP, OMP AY Preferred Limited, Pierfront Capital Mezzanine Fund Pte. Ltd. and Tortoise Direct Opportunities Fund, LP (incorporated by reference to Exhibit 4.1 to the registrant's report on Form 6-K filed on June 30, 2017)


    4.37


    Registration Rights Agreement, dated February 2, 2017, among KNOT Offshore Partners LP and the Purchasers party thereto (incorporated by reference to Exhibit 4.3 to the registrant's report on Form 6-K filed on February 2, 2017)

    Table of Contents

    Exhibit


    Number

    Description
     

    Description

    8.1
        8.1**Subsidiaries of KNOT Offshore Partners LP

      12.1*
    12.1

    *

    Rule 13a-14(a)/15d-14(a) Certification of the Principal Executive Officer and the Principal Financial Officer

      13.1*
    13.1

    *

    Certification under Section 906 of the Sarbanes-Oxley Act of 2002 of the Principal Executive Officer and the Principal Financial Officer

      15.1*
    15.1

    *

    Consent of Independent Registered Public Accounting Firm


    101.INS

     

    XBRL Instance Document


    101.SCH

     

    XBRL Taxonomy Extension Schema


    101.CAL

     

    XBRL Taxonomy Extension Schema Calculation Linkbase


    101.DEF

     

    XBRL Taxonomy Extension Schema Definition Linkbase


    101.LAB

     

    XBRL Taxonomy Extension Schema Label Linkbase


    101.PRE

     

    XBRL Taxonomy Extension Schema Presentation Linkbase

    *
    Filed herewith.

    Table of Contents


    SIGNATURE

            

    *Filed herewith.
    Certain portions have been omitted pursuant to a confidential treatment request. Omitted information has been filed separately with the SEC.

    SIGNATURE

    The registrant hereby certifies that it meets all of the requirements for filing on Form 20-F and that it has duly caused and authorized the undersigned to sign this Annual Report on its behalf.

    KNOT OFFSHORE PARTNERS LP



    By:


    /s/ JOHN COSTAIN

    By: 

    /s/ John Costain

    Name:John Costain

    Title:Chief Executive Officer and Chief

    Financial Officer

    Date: March 18, 2016April 10, 2019



    Table of Contents


    INDEX TO FINANCIAL STATEMENTS OF KNOT OFFSHORE PARTNERS LP


    Table of Contents


    Report of Independent Registered Public Accounting Firm

    To the Unitholders and the Board of Directors and Partners of KNOT Offshore Partners LP

    Opinion on the Financial Statements

    We have audited the accompanying consolidated balance sheets of KNOT Offshore Partners LP (the "Partnership") as of December 31, 20152018 and 2014, as described in Note 2(a), and2017, the related consolidated and combined carve-out statements of operations, comprehensive income, partners’partners' capital / owners’ equity, and cash flows for each of the three years in the period ended December 31, 2015. These2018 and the related notes (collectively referred to as the "consolidated financial statements"). In our opinion, the consolidated and combined carve-out financial statements arepresent fairly, in all material respects, the responsibilityfinancial position of the Partnership’s management. Our responsibility is to express an opinion on these consolidatedPartnership at December 31, 2018 and combined carve-out financial statements based on our audits.2017, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2018, in conformity with U.S. generally accepted accounting principles.

    We conducted our auditsalso have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States). (PCAOB), the Partnership's internal control over financial reporting as of December 31, 2018, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) and our report dated April 10, 2019 expressed an unqualified opinion thereon.

    Basis for Opinion

            These financial statements are the responsibility of the Partnership's management. Our responsibility is to express an opinion on the Partnership's financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Partnership in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

            We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. We were not engagedmisstatement, whether due to perform an audit of the Partnership’s internal control over financial reporting.error or fraud. Our audits included considerationperforming procedures to assess the risks of internal control overmaterial misstatement of the financial reporting as a basis for designing auditstatements, whether due to error or fraud, and performing procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Partnership’s internal control over financial reporting. Accordingly, we express no such opinion. An audit also includesrespond to those risks. Such procedures included examining, on a test basis, evidence supportingregarding the amounts and disclosures in the financial statements, assessingstatements. Our audits also included evaluating the accounting principles used and significant estimates made by management, andas well as evaluating the overall presentation of the financial statement presentation.statements. We believe that our audits provide a reasonable basis for our opinion.

    /s/ Ernst & Young AS

    We have served as the Partnership's auditor since 2013.

    Oslo, Norway
    April 10, 2019


    Table of Contents


    Report of Independent Registered Public Accounting Firm

    To the Unitholders and the Board of Directors of KNOT Offshore Partners LP

    Opinion on Internal Control Over Financial Reporting

            We have audited KNOT Offshore Partners LP's internal control over financial reporting as of December 31, 2018, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). In our opinion, the financial statements referred to above present fairly,KNOT Offshore Partners LP (the "Partnership") maintained, in all material respects, effective internal control over financial reporting as of December 31, 2018, based on the COSO criteria.

            We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the 2018 consolidated financial positionstatements of KNOT Offshore Partners LP at December 31, 2015the Partnership and 2014,our report dated April 10, 2019 expressed an unqualified opinion thereon.

    Basis for Opinion

            The Partnership's management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management's Annual Report on Internal Controls over Financial Reporting. Our responsibility is to express an opinion on the Partnership's internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Partnership in accordance with the U.S. federal securities laws and the consolidatedapplicable rules and combined results of its operations and its cash flows for eachregulations of the three yearsSecurities and Exchange Commission and the PCAOB.

            We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects.

            Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the period ended December 31, 2015,circumstances. We believe that our audit provides a reasonable basis for our opinion.

    Definition and Limitations of Internal Control Over Financial Reporting

            A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in conformityaccordance with U.S. generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company's assets that could have a material effect on the financial statements.

            Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

    /s/ Ernst & Young AS

    Oslo, Norway
    April 10, 2019


    March 18, 2016

    Table of Contents


    KNOT OFFSHORE PARTNERS LP



    Consolidated and Combined Carve-Out Statements of Operations

    for

    For the Years Ended December 31, 2015, 20142018, 2017 and 2013

    2016

    (U.S. Dollars in thousands, except per unit amounts)

       Year Ended December 31, 
       2015 *  2014 *  2013 ** 

    Operating revenues: (Notes 2(d), 5 and 18)

        

    Time charter and bareboat revenues

      $154,750   $112,784   $73,151  

    Other income

       274    57    —    

    Loss of hire insurance recoveries

       —      —      250  
      

     

     

      

     

     

      

     

     

     

    Total revenues (Notes 2(d), 5, 6, and 18)

       155,024    112,841    73,401  
      

     

     

      

     

     

      

     

     

     

    Operating expenses: (Note 18)

        

    Vessel operating expenses (Note 2(d))

       27,543    23,879    14,288  

    Depreciation (Note 13)

       48,844    34,322    23,768  

    General and administrative expenses

       4,290    4,323    5,361  

    Goodwill impairment charge (Note 8)

       6,217    —      —    
      

     

     

      

     

     

      

     

     

     

    Total operating expenses

       86,894    62,524    43,417  
      

     

     

      

     

     

      

     

     

     

    Operating income

       68,130    50,317    29,984  
      

     

     

      

     

     

      

     

     

     

    Finance income (expense): (Notes 2(e) and 18)

        

    Interest income

       8    13    30  

    Interest expense (Note 9(a))

       (17,451  (15,271  (10,773

    Other finance expense (Note 9(b))

       (504  (1,271  (2,048

    Realized and unrealized gain (loss) on derivative instruments (Note 10)

       (9,695  (6,407  505  

    Net gain (loss) on foreign currency transactions

       (105  26    193  
      

     

     

      

     

     

      

     

     

     

    Total finance expense

       (27,747  (22,910  (12,093
      

     

     

      

     

     

      

     

     

     

    Income before income taxes

       40,383    27,407    17,891  

    Income tax benefit (expense) (Notes 2(q) and 17)

       59    (15  (2,827
      

     

     

      

     

     

      

     

     

     

    Net income

      $40,442   $27,392   $15,064  
      

     

     

      

     

     

      

     

     

     

    General Partner’s interest in net income

       767    536    301  

    Limited Partners’ interest in net income

       39,675    26,856    14,764  

    Earnings per unit: (Note 21)(1)

        

    Common units (basic and diluted)

      $1.499   $1.369   $1.063  

    Subordinated units (basic and diluted)

      $1.708   $1.343   $1.065  

    General partner units (basic and diluted)

      $1.487   $1.329   $1.063  

    Cash distributions declared and paid per unit (Note 21)

      $2,030   $1.795   $0.752  
     
     Year Ended December 31, 
     
     2018 2017 2016 

    Operating revenues: (Notes 2(e), 5 and 18)

              

    Time charter and bareboat revenues

     $278,191 $212,501 $172,878 

    Loss of hire insurance recoveries (Notes 2(t) and 8)

      450  5,176   

    Other income

      815  1,526  793 

    Total revenues (Notes 2(e), 5, 6, 7 and 18)

      279,456  219,203  173,671 

    Operating expenses: (Note 18)

              

    Vessel operating expenses (Note 2(e))

      56,730  46,709  30,903 

    Depreciation (Note 13)

      88,756  71,583  56,230 

    General and administrative expenses

      5,290  5,555  4,371 

    Total operating expenses

      150,776  123,847  91,504 

    Operating income

      128,680  95,356  82,167 

    Finance income (expense): (Notes 2(f) and 18)

              

    Interest income

      739  248  24 

    Interest expense (Note 9(a))

      (49,956) (30,714) (20,867)

    Other finance expense (Note 9(b))

      (1,260) (1,406) (1,311)

    Realized and unrealized gain (loss) on derivative instruments (Note 10)

      4,039  4,831  1,213 

    Net gain (loss) on foreign currency transactions

      (79) (267) (139)

    Total finance expense

      (46,517) (27,308) (21,080)

    Income before income taxes

      82,163  68,048  61,087 

    Income tax benefit (Notes 2(r) and 17)

      2  16  15 

    Net income

     $82,165 $68,064 $61,102 

    Series A Preferred unitholders' interest in net income

     $7,200 $5,253 $ 

    General Partner's interest in net income

      1,384  1,160  1,256 

    Limited Partners' interest in net income

      73,581  61,651  59,846 

    Earnings per unit (Basic): (Note 20)

              

    Common unit (basic)

     $2.251 $2.050 $2.291 

    Subordinated unit (basic)

     $ $ $1.542 

    General Partner unit (basic)

     $2.251 $2.046 $2.248 

    Earnings per unit (Diluted): (Note 20)

              

    Common unit (diluted)

     $2.217 $2.037 $2.291 

    Subordinated unit (diluted)

     $ $ $1.542 

    General Partner unit (diluted)

     $2.251 $2.046 $2.248 

       

    (1)Earnings per unit information for the year ended December 31, 2013 is in respect of the period from the closing of the IPO (April 15, 2013) to December 31, 2013.
    *2015 and 2014 refers to the Consolidated Statements of Operations
    **2013 refers to the Consolidated and Combined Carve-Out Statement of Operations

    The accompanying notes are an integral part of these financial statements.


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    KNOT OFFSHORE PARTNERS LP



    Consolidated and Combined Carve-Out Statements of Comprehensive Income

    for

    For the Years Ended December 31, 2015, 20142018, 2017 and 2013

    2016

    (U.S. Dollars in thousands)

     
     Year Ended December 31, 
     
     2018 2017 2016 

    Net income

     $82,165 $68,064 $61,102 

    Other comprehensive income, net of tax

           

    Comprehensive income

     $82,165 $68,064 $61,102 

       2015 *   2014 *   2013 ** 

    Net income

      $40,442    $27,392    $15,064  

    Other comprehensive income, net of tax

       —       —       —    
      

     

     

       

     

     

       

     

     

     

    Comprehensive income

      $40,442    $27,392    $
    15,064
      
      

     

     

       

     

     

       

     

     

     

    *2015 and 2014 refers to the Consolidated Statements of Operations
    **2013 refers to the Consolidated and Combined Carve-Out Statement of Operations

    The accompanying notes are an integral part of these financial statements.


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    KNOT OFFSHORE PARTNERS LP



    Consolidated Balance Sheets

    as

    As of December 31, 20152018 and 2014

    2017

    (U.S. Dollars in thousands)

     
     At December 31,
    2018
     At December 31,
    2017
     

    ASSETS

           

    Current assets:

           

    Cash and cash equivalents (Notes 2(g) and 11)

     $41,712 $46,104 

    Trade accounts receivable, less allowance for doubtful accounts of $0 in, 2018 and $0 in 2017 (Notes 2(i) and 12(a))

         

    Amounts due from related parties (Note 18(d))

      1,141  571 

    Inventories (Note 2(j))

      2,443  2,241 

    Derivative assets (Notes 2(q), 10 and 11)

      4,621  1,579 

    Other current assets (Notes 2(k) and 12(b))

      2,462  5,610 

    Total current assets

      52,379  56,105 

    Long-term assets:

           

    Vessels, net of accumulated depreciation (Notes 2(l), 2(m), 2(n), 13 and 18(f))

      1,767,080  1,723,023 

    Intangible assets, net (Notes 2(o) and 14(a))

      1,891  2,497 

    Derivative assets (Notes 2(q), 10 and 11)

      11,667  9,850 

    Accrued income

      3,807  1,693 

    Total long term assets

      1,784,445  1,737,063 

    Total assets

     $1,836,824 $1,793,168 

    LIABILITIES AND EQUITY

           

    Current liabilities:

           

    Trade accounts payable (Note 18(e))

     $4,800 $5,224 

    Accrued expenses (Note 15)

      6,464  6,504 

    Current portion of long-term debt (Notes 11 and 16)

      106,926  92,985 

    Current portion of derivative liabilities (Notes 2(q), 10 and 11)

      1,740  978 

    Income taxes payable (Notes 2(r) and 17)

      130  175 

    Current portion of contract liabilities (Notes 2(o) and 14(b))

      1,518  1,518 

    Prepaid charter (Note 2(s))

      5,771  9,980 

    Amount due to related parties (Note 18(d))

      1,070  5,450 

    Total current liabilities

      128,419  122,814 

    Long-term liabilities:

           

    Long-term debt (Notes 2(p), 11 and 16)

      970,365  933,630 

    Derivative liabilities (Notes 2(q), 10 and 11)

      345  164 

    Contract liabilities (Notes 2(o) and 14(b))

      5,203  6,722 

    Deferred tax liabilities (Notes 2(r) and 17)

      453  624 

    Total long-term liabilities

      976,366  941,140 

    Total liabilities

      1,104,785  1,063,954 

    Commitments and contingencies (Notes 2(t) and 19)

           

    Series A Convertible Preferred Units (Notes 22 and 23)

      89,264  89,264 

    Equity:

           

    Partners' capital:

           

    Common unitholders: 32,694,094 units issued and outstanding at December 31, 2018 and 2017. 

      631,244  628,471 

    General partner interest: 615,117 units issued and outstanding at December 31, 2018 and 2017. 

      11,531  11,479 

    Total partners' capital

      642,775  639,950 

    Total liabilities and equity

     $1,836,824 $1,793,168 

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    KNOT OFFSHORE PARTNERS LP

    Consolidated Statements of Changes in Partners' Capital

    For the Years Ended December 31, 2018, 2017 and 2016

    (U.S. Dollars in thousands)

     
     Partners' Capital  
      
      
     
     
     Accumulated
    Other
    Comprehensive
    Income (Loss)
      
     Series A
    Convertible
    Preferred
    Units
     
    (U.S. Dollars in thousands)
     Common
    Units
     Subordinated
    Units
     General
    Partner
    Units
     Total
    Partners'
    Capital
     

    Consolidated balance at December 31, 2015

     $411,317 $99,158 $10,295 $ $520,770 $ 

    Net income

      54,794  5,052  1,256    61,102   

    Other comprehensive income

                 

    Cash distributions

      (48,820) (10,088) (1,253)   (60,161)  

    Conversion of subordinated units to common units

      94,123  (94,123)        

    Consolidated balance at December 31, 2016

     $511,413 $ $10,297 $ $521,710 $ 

    Net income

      61,651    1,160    62,811  5,253 

    Other comprehensive income

                 

    Cash distributions

      (64,307)   (1,210)   (65,517) (3,453)

    Net proceeds from issuance of common units

      119,714    1,232    120,946   

    Net proceeds from sale of Series A Convertible Preferred Units

                87,464 

    Consolidated balance at December 31, 2017

     $628,471 $ $11,479 $ $639,950 $89,264 

    Net income

      73,581    1,384    74,965  7,200 

    Other comprehensive income

                 

    Cash distributions

      (70,804)   (1,332)   (72,136) (7,200)

    Net proceeds from issuance of common units

      (4)       (4)  

    Consolidated balance at December 31, 2018

     $631,244 $ $11,531 $ $642,775 $89,264 

       December 31, 
       2015  2014 

    Assets

       

    Current assets:

       

    Cash and cash equivalents (Notes 2(f) and 11)

      $23,573   $30,746  

    Trade accounts receivable, less allowance for doubtful accounts of $0 in, 2015 and $0 in 2014 (Notes 2(h) and 12(a))

       —      —    

    Amounts due from related parties (Note 18(d))

       58    130  

    Inventories (Note 2(i))

       849    915  

    Other current assets (Notes 2(j) and 12(b))

       2,949    3,958  
      

     

     

      

     

     

     

    Total current assets

       27,429    35,749  
      

     

     

      

     

     

     

    Long-term assets:

       

    Vessels and equipment (Notes 2(k), 2(l), 2(m), 13 and 18(f)):

       

    Vessels

       1,351,219    1,131,321  

    Less accumulated depreciation and amortization

       (158,292  (109,464
      

     

     

      

     

     

     

    Vessels and equipment, net

       1,192,927    1,021,857  
      

     

     

      

     

     

     

    Goodwill (Notes 2(n), 8, and 22)

       —      6,217  

    Deferred debt issuance cost (Note 2(o))

       2,819    3,959  

    Derivative assets (Notes 2(p), 10 and 11)

       695    2,966  
      

     

     

      

     

     

     

    Total assets

      $1,223,870   $1,070,748  
      

     

     

      

     

     

     

    Liabilities and Partners’ Capital/Owners’ Equity

       

    Current liabilities:

       

    Trade accounts payable (Note 18(e))

      $1,995   $1,869  

    Accrued expenses (Note 15)

       3,888    2,735  

    Current portion of long-term debt (Notes 11 and 16)

       49,684    38,718  

    Current portion derivative liabilities (Notes 2(p), 10 and 11)

       5,138    7,450  

    Income taxes payable (Notes 2(q) and 17)

       249    362  

    Current portion of contract liabilities (Notes 2(n) and 14)

       1,518    1,518  

    Prepaid charter and deferred revenue (Note 2(r))

       3,365    6,751  

    Amount due to related parties (Note 18(d))

       848    628  
      

     

     

      

     

     

     

    Total current liabilities

       66,685    60,031  
      

     

     

      

     

     

     

    Long-term liabilities:

       

    Long-term debt (Notes 11 and 16)

       622,006    562,503  

    Derivative liabilities (Notes 2(p), 10 and 11)

       1,232    —    

    Contract liabilities (Notes 2(n) and 14)

       9,757    11,275  

    Deferred tax liabilities (Notes 2(q) and 17)

       877    1,402  

    Long-term debt from related parties (Notes 11, 16 and 18)

       —      12,000  

    Other long-term liabilities (Note 2(r))

       2,543    4,172  
      

     

     

      

     

     

     

    Total liabilities

       703,100    651,383  
      

     

     

      

     

     

     

    Commitments and contingencies (Notes 2(s) and 19)

       

    Equity:

       

    Partners’ capital:

       

    Common unitholders

       411,317    307,544  

    Subordinated unitholders

       99,158    103,680  

    General partner interest

       10,295    8,141  
      

     

     

      

     

     

     

    Total partners’ capital

       520,770    419,365  
      

     

     

      

     

     

     

    Total liabilities and equity

      $1,223,870   $1,070,748  
      

     

     

      

     

     

     

    The accompanying notes are an integral part of these financial statements.


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    KNOT OFFSHORE PARTNERS LP



    Consolidated and Combined Carve-Out

    Statements of Changes in Partners’ Capital/Owners’ Equity

    forCash Flows

    For the Years Ended December 31, 2015, 20142018, 2017 and 2013

    2016

    (U.S. Dollars in thousands)

    (U.S. Dollars in thousands)
     2018 2017 2016 

    OPERATING ACTIVITIES

              

    Net income

     $82,165 $68,064 $61,102 

    Adjustments to reconcile net income to cash provided by operating activities:

              

    Depreciation

      88,756  71,583  56,230 

    Amortization of contract intangibles / liabilities

      (912) (1,089) (1,518)

    Amortization of deferred revenue

      (1,056) (1,487) (1,629)

    Amortization of deferred debt issuance cost

      3,188  1,737  1,198 

    Drydocking expenditure

      (12,421) (6,885) (2,595)

    Income tax expense

      (2) (16) (15)

    Income taxes paid

      (190) (219) (255)

    Unrealized (gain) loss on derivative instruments

      (2,076) (7,391) (5,033)

    Unrealized (gain) loss on foreign currency transactions

      45  45  93 

    Changes in operating assets and liabilities

              

    Decrease (increase) in amounts due from related parties

      (49) 62,391  (33)

    Decrease (increase) in inventories

      55  (358) (20)

    Decrease (increase) in other current assets

      3,256  (1,724) (110)

    Decrease (increase) in accrued revenue

      (2,114) (540) (1,153)

    Increase (decrease) in trade accounts payable

      (1,297) 2,195  45 

    Increase (decrease) in accrued expenses

      (1,052) 142  (1,699)

    Increase (decrease) prepaid charter

      (3,154) 1,435  3,995 

    Increase (decrease) in amounts due to related parties

      (4,496) (33,298) (159)

    Net cash provided by operating activities

      148,646  154,585  108,445 

    INVESTING ACTIVITIES

              

    Disposals (additions) to vessel and equipment

      (117) (849) (846)

    Acquisition ofAnna Knutsen (net of cash acquired)

      (15,376)    

    Acquisition ofBrasil Knutsen (net of cash acquired)

        (547)  

    Acquisition ofLena Knutsen (net of cash acquired)

        (32,766)  

    Acquisition ofVigdis Knutsen (net of cash acquired)

        (28,321)  

    Acquisition ofTordis Knutsen (net of cash acquired)

        (32,374)  

    Acquisition ofRaquel Knutsen (net of cash acquired)

          (13,106)

    Net cash provided by (used in) investing activities

      (15,493) (94,857) (13,952)

    FINANCING ACTIVITIES

              

    Proceeds from long-term debt (Note 16)

      497,779  211,500  30,000 

    Repayment of long-term debt (Note 16)

      (527,979) (297,708) (60,992)

    Proceeds from issuance of long-term debt from related parties (Notes 16 and 18)

          25,000 

    Repayment of long-term debt from related parties (Notes 16 and 18)           

      (22,535) (93,369) (24,018)

    Payment of debt issuance cost

      (5,301) (1,241) (174)

    Cash distribution

      (79,336) (68,970) (60,161)

    Net proceeds from issuance of common units (Note 22)

      (4) 120,946   

    Net proceeds from sale of Convertible Preferred Units (Note 22)

        87,464   

    Net cash used in financing activities

      (137,376) (41,378) (90,345)

    Effect of exchange rate changes on cash

      (169) 90  (57)

    Net increase (decrease) in cash and cash equivalents

      (4,392) 18,440  4,091 

    Cash and cash equivalents at the beginning of the period

      46,104  27,664  23,573 

    Cash and cash equivalents at the end of the period

     $41,712 $46,104 $27,664 

          Partners’ Capital  Accumulated   Total
    Partners’
     
       Owners’
    Invested
    Equity
      Common
    Units
      Subordinated
    Units
      General
    Partner
      Other
    Comprehensive
    Income
       Capital/
    Owners’
    Equity
     

    Combined carve-out balance at December 31, 2012

      $97,194    —      —      —      —      $97,194  

    Combined carve-out net loss (Jan 1 to April 15, 2013)

       (3,538  —      —      —      —       (3,538

    Combined carve-out other comprehensive income

       —      —      —      —      —       —    

    Movement in invested Equity

       10,882    —      —      —      —       10,882  

    Combined balance at April 15, 2013

       104,538    —      —      —      —       104,538  

    Elimination of equity

       27,792    —      —      —      —       27,792  

    Allocation of partnership capital to unitholders

       (132,330  —      127,141    5,189    —       —    

    Proceeds from initial public offering (8,567,500 common units (including 1,117,500 common units sold pursuant to the full exercise of the underwriters’ option to purchase additional units) net of underwriters’ discount of $11,605 (Note 3)

       —      168,313    —      —      —       168,313  

    Cash distribution to KNOT

       —      —      (21,954  —      —       (21,954

    Initial public offering costs

       —      (2,201  —      —      —       (2,201

    Post initial public offering net income

       —      9,106    9,125    371      18,602  

    Other comprehensive income

       —      —      —      —      —       —    

    Cash distributions

       —      (6,445  (6,455  (263  —       (13,163

    Consolidated balance at December 31, 2013

       —      168,773    107,857    5,297    —       281,927  

    Net income

       —      15,349    11,507    536    —       27,392  

    Cash distribution

       —      (20,226  (15,684  (727  —       (36,637

    Proceeds from public offering (5,240,000 common units including 640,000 common units pursuant to the exercise of the underwriter’s option to purchase additional common units), net of underwriters’ discount of $4,991 (Note 23)

       —      143,983    —      3,040    —       147,023  

    Offering cost (Note 23)

       —      (335  —      (5  —       (340

    Other comprehensive income

       —      —      —      —      —       —    

    Consolidated balance at December 31, 2014

       —     $307,544   $103,680   $8,141   $—      $419,365  

    Net income

       —      25,038    14,637    767    —       40,442  

    Cash distribution

       —      (33,179  (19,159  (1,032  —       (53,370

    Proceeds from public offering (5,000,000 common units), net of underwriters’ discount of $4,300 (Note 23)

       —      114,500    —      2,424    —       116,924  

    Offering cost (Note 23)

       —      (288  —      (5  —       (293

    Repurchase common units

       —      (2,298  —      —      —       (2,298

    Other comprehensive income

       —      —      —      —      —       —    

    Consolidated balance at December 31, 2015

       —     $411,317   $99,158   $10,295   $—      $
    520,770
      

    The accompanying notes are an integral part of these financial statements.


    Table of Contents


    KNOT OFFSHORE PARTNERS LP

    Consolidated and Combined Carve-Out Statements of Cash Flows

    for the Years Ended December 31, 2015, 2014 and 2013

    (U.S. Dollars in thousands)

       Year Ended December 31, 
       2015 *  2014 *  2013 ** 

    Cash flows provided by operating activities:

        

    Net income

      $40,442   $27, 392   $15,064  

    Adjustments to reconcile net income to cash provided by operating activities:

        

    Depreciation

       48,844    34,322    23,768  

    Amortization of contract intangibles / liabilities

       (1,518  (1,518  (1,518

    Amortization of deferred revenue

       (1,913  (1,170  (427

    Amortization of deferred debt issuance cost

       1,149    3,021    1,741  

    Goodwill impairment charge

       6,217    —      —    

    Income tax expense

       (59  15    2,827  

    Income taxes paid

       (348  (731  —    

    Unrealized (gain) loss on derivative instruments

       390    3,910    (1,770

    Unrealized (gain) loss on foreign currency transactions

       22    (136  32  

    Other items

       —      (16  —    

    Changes in operating assets and liabilities

        

    Decrease (increase) in trade accounts receivable

       —      —      99  

    Decrease (increase) in amounts due from related parties

       1,008    (49  (77

    Decrease (increase) in inventories

       210    58    197  

    Decrease (increase) in other current assets

       1,222    (172  2,555  

    Increase (decrease) in trade accounts payable

       45    337    662  

    Increase (decrease) in accrued expenses

       (737  (2,092  771  

    Increase (decrease) prepaid revenue

       (4,306  793    101  

    Increase (decrease) in amounts due to related parties

       (1,508  (4,625  109  

    Increase (decrease) in other liabilities

       —      —      26  
      

     

     

      

     

     

      

     

     

     

    Net cash provided by operating activities (Note 20)

       89,160    59,339    44,160  
      

     

     

      

     

     

      

     

     

     

    Cash flows from investing activities:

        

    Disposals (additions) to vessel and equipment

       (1,526  6    215  

    Acquisition of theCarmen Knutsen (net of cash acquired) (Note 22)

       —      —      (55,683

    Acquisition of theHilda Knutsen and Torill Knutsen (net of cash acquired) (Note 22)

       —      (105,296  —    

    Acquisition of theDan Cisne (net of cash acquired) (Note 22)

       —      (16,656  —    

    Acquisition of theDan Sabia (net of cash acquired) (Note 22)

       (36,843  —      —    

    Acquisition of the Ingrid Knutsen (net of cash acquired) (Note 22)

       (8,119  —      —    
      

     

     

      

     

     

      

     

     

     

    Net cash used in investing activities

       (46,488  (121,946  (55,468
      

     

     

      

     

     

      

     

     

     

    Cash flows from financing activities:

        

    Proceeds from issuance of long-term debt (Note 16)

       —      377,813    45,422  

    Proceeds from issuance of long-term debt from related parties (Note 16
    and 18)

       —      12,000    10,453  

    Repayment of long-term debt (Note 16)

       (78,276  (420,196  (142,873

    Repayment of long-term debt from related parties

       (32,253  (10,612  —    

    Accumulated interest from related party

       —      263    —    

    Payments of debt issuance cost

       (9  (5,004  (1,098

    Repurchase of common units

       (2,298  —      —    

    Changes in payables to related parties

       —      —      (15,174

    Contributions from/distribution to owner, net (Note 20)

       —      —      11,623  

    Proceeds from public offerings, net of underwriters’ discount

       116,924    147,023    168,313  

    Cash distributed to KNOT

       —      —      (21,954

    Offering cost

       (293  (340  (2,201

    Cash distribution

       (53,370  (36,637  (13,163

    Change in restricted cash

       —      458    (458
      

     

     

      

     

     

      

     

     

     

    Net cash provided by (used in) financing activities

       (49,575  64,768    38,890  
      

     

     

      

     

     

      

     

     

     

    Effect of exchange rate changes on cash

       (270  (251  (33

    Net increase in cash and cash equivalents

       7,173    1,910    27,549  

    Cash and cash equivalents at the beginning of the year

       30,746    28,836    1,287  
      

     

     

      

     

     

      

     

     

     

    Cash and cash equivalents at the end of the year

      $23,573   $30,746   $28,836  
      

     

     

      

     

     

      

     

     

     

    *2015 and 2014 refers to the Consolidated Statements of Cash Flows
    **2013 refers to the Consolidated and Combined Carve-Out Statement of Cash Flows

    The accompanying notes are an integral part of these financial statements.

    KNOT OFFSHORE PARTNERS LP



    Notes to Consolidated and Combined Carve-Out Financial Statements

    1) Description of Business

    KNOT Offshore Partners LP (the “Partnership”"Partnership") was formed as a limited partnership under the laws of the Republic of the Marshall Islands. The Partnership was formed for the purpose of acquiring 100% ownership interests in four shuttle tankers owned by Knutsen NYK Offshore Tankers AS (“KNOT”("KNOT") in connection with the Partnership’sPartnership's initial public offering of its common units (the “IPO”"IPO"), which was completed on April 15, 2013.

    The Partnership was established prior        Pursuant to the closingPartnership's Amended and Restated Agreement of the IPO. In connection with the consummation of the IPO, through KNOT Offshore Partners UK LLC (“KNOT UK”Limited Partnership (the "Partnership Agreement"), a 100% owned limited liability company formed under the laws of the Marshall Islands, the Partnership acquired a 100% ownership interest in KNOT Shuttle Tankers AS, a wholly owned subsidiary of KNOT, which as of February 27, 2013 directly or indirectly owned (1) 100% of Knutsen Shuttle Tankers XII KS, the owner of theRecife Knutsen and theFortaleza Knutsen, (2) 100% of Knutsen Shuttle Tankers XII AS, the general partner of Knutsen Shuttle Tankers XII KS, and (3) theWindsor Knutsen and theBodil Knutsen and all of their related charters, inventory and long-term debt. In establishing the new KNOT Shuttle Tankers AS structure, KNOT formed three new Norwegian subsidiaries, which acquired 90% of Knutsen Shuttle Tankers XII KS, 100% of theWindsor Knutsen and 100% of theBodil Knutsen, respectively.

    In connection with the consummation of the IPO, (1) the Partnership issued to KNOT 8,567,500 subordinated units, representing a 49.0% limited partner interest in the Partnership, and 100% of the incentive distribution rights (“IDRs”); (2) KNOT Offshore Partners GP LLC, a wholly owned subsidiary of KNOT, and the general partner of the Partnership (the “General Partner”"General Partner"), continued its 2.0% general partner interest in the Partnership; and (3) the Partnership issued and sold to the public, through the underwriters, 8,567,500 common units (including 1,117,500 common units sold pursuant to the full exercise of the underwriters’ option to purchase additional units), representing a 49.0% limited partner interest in the Partnership. The Partnership received gross proceeds before underwriting discounts, the structuring fee and estimated offering expenses of approximately $179.9 million in connection with the IPO, all as further described in Note 3—Formation Transactions and Initial Public Offering.

    For periods prior to April 15, 2013 (the closing of the IPO), the Partnership and its subsidiaries that had interests in theWindsor Knutsen, theBodil Knutsen, theRecife Knutsen and theFortaleza Knutsen are collectively referred to as the “Combined Entity.” The transfers and contributions of the subsidiaries holding interests in theWindsor Knutsen, theBodil Knutsen, theRecife Knutsen and theFortaleza Knutsen from KNOT to the Partnership in connection with the IPO were deemed to be a reorganization of entities under common control. As a reorganization of entities under common control, the transfer of the subsidiaries and other net assets has been recorded at KNOT’s historical book value.

    Pursuant to the Partnership’s First Amended and Restated Agreement of Limited Partnership (the “Partnership Agreement”), the General Partner has irrevocably delegated to the Partnership’sPartnership's board of directors the power to oversee and direct the operations of, manage and determine the strategies and policies of the Partnership. During the period from the Partnership's IPO until the time of the Partnership’sPartnership's first annual general meeting of unitholders (“AGM”("AGM") on June 25, 2013, the General Partner retained the sole power to appoint, remove and replace all members of the Partnership’sPartnership's board of directors. AtFrom the first AGM, four of the seven board members became electable by the common unitholders and accordingly, from this date, KNOT, as the owner of the General Partner, no longer retained the power to control the Partnership’sPartnership's board of directors and, hence, the Partnership. As a result, the Partnership is no longer considered to be under common control with KNOT and as a consequence, the Partnership no longer accounts for any vessel acquisitions from KNOT after June 25, 2013of businesses and assets under the purchase method of accounting and not as a transfertransfers of equity interests between entities under common control.

    On August 1, 2013, the Partnership’s wholly owned subsidiary, KNOT Shuttle Tankers AS, acquired Knutsen Shuttle Tankers 13 AS, the company that owns theCarmen Knutsen, from KNOT. The acquisition of theCarmen Knutsen was accounted for as an acquisition of a business. Accordingly, the results of theCarmen Knutsen are All acquisitions have been consolidated into the Partnership’s results from the date of its acquisition. There has been no retroactive restatement of the Partnership’s financial statements to reflect the historical results of theCarmen Knutsen prior to its acquisition.

    On June 27, 2014, the Partnership issued and sold 4,600,000 common units in an underwritten public offering (the “June 2014 Offering”). In connection with the June 2014 Offering, the Partnership also granted the underwriters the option to purchase an additional 690,000 common units. In connection with the partial exercises (the “Option Exercises”) by the underwriters of their option to purchase additional common units, on July 14, 2014 and July 24, 2014, the Partnership issued and sold 150,000 common units and 490,000 common units, respectively, and the General Partner made additional capital contributions to the Partnership in order to maintain its 2% general partner interest in the Partnership.

    The net proceeds from the June 2014 Offering and the Option Exercises (an aggregate of $144.0 million) and related capital contributions by the General Partner (an aggregate of $3.0 million) were used to fund the purchase price of the acquisitions of the companies that own theHilda Knutsen and theTorill Knutsen from Knutsen NYK Offshore Tankers AS and for general partnership purposes.

    On June 30, 2014, the Partnership’s wholly owned subsidiary, KNOT Shuttle Tankers AS, acquired Knutsen Shuttle Tankers 14 AS and Knutsen Shuttle Tankers 15 AS, the companies that own theHilda Knutsen and theTorill Knutsen, respectively, from KNOT. The acquisitions of theHilda Knutsen and theTorill Knutsen were accounted for as an acquisition of businesses. Accordingly, the results of operations of theHilda Knutsen and theTorill Knutsen are consolidated into the Partnership’sPartnership's results as of the date of their acquisitions.

    On December 15, 2014, the Partnership’s wholly owned subsidiary, KNOT Shuttle Tankers AS, acquired KNOT Shuttle Tankers 20 AS, the company that owns theDan Cisne, from KNOT. The acquisition of theDan Cisnewas accounted for as an acquisition of a business. Accordingly, the results of operations of theDan Cisne are consolidated into the Partnership’s results as of the date of its acquisition.

    On June 2, 2015, the Partnership issued and sold 5,000,000 common units in an underwritten public offering (the “June 2015 Offering”) and the General Partner made an additional capital contribution to the Partnership in order to maintain its 2% general partner interest in the Partnership.

    The net proceeds from the June 2015 Offering (an aggregate of $114.2 million) and related capital contributions by the General Partner (an aggregate of $2.4 million) were used to fund the purchase price of the acquisition of the company that owns theDan Sabiafrom Knutsen NYK Offshore Tankers AS and for general partnership purposes.

    On June 15, 2015, the Partnership’s wholly owned subsidiary, KNOT Shuttle Tankers AS, acquired KNOT Shuttle Tankers 21 AS, the company that owns theDan Sabia from KNOT. The acquisition of theDan Sabia was accounted for as an acquisition of a businesses. Accordingly, the results of operations of theDan Sabia are consolidated into the Partnership’s results as of the date of the acquisition.

    On October 15, 2015, the Partnership’s wholly owned subsidiary, KNOT Shuttle Tankers AS, acquired Knutsen NYK Shuttle Tankers 16 AS, the company that owns theIngrid Knutsen, from KNOT. The acquisition of theIngrid Knutsenwas accounted for as an acquisition of a business. Accordingly, the results of operations of theIngrid Knutsen are consolidated into the Partnership’s results as of the date of its acquisition.

    Please read Note 22—Business 2—Summary of Significant Accounting Policies and Note 21—Acquisitions.

    Each        As of December 31, 2018, the Partnership had a fleet of sixteen shuttle tankers, theWindsor Knutsen, theBodil Knutsen, theRecife Knutsen, theFortaleza Knutsen, theCarmen Knutsen, theHilda Knutsen, theTorill Knutsen, theDan Cisne, theDan Sabia,and theIngrid Knutsen are, theRaquel Knutsen, theTordis Knutsen, theVigdis Knutsen, theLena Knutsen, theBrasil Knutsen and theAnna Knutsen, each referred to as a “Vessel”"Vessel" and, collectively, as the “Vessels.” As of December 31, 2015, the Partnership operated a fleet of ten vessels."Vessels". The Vessels operate under fixed long-term charter contracts to charterers, with expiration dates between 20172019 and 2029.2025. Please see Note 6—Operating Leases.

    The consolidated and combined carve-out financial statements have been prepared assuming that the Partnership will continue as a going concern.

            On March 1, 2018, the Partnership's wholly owned subsidiary, KNOT Shuttle Tankers AS, acquired KNOT Shuttle Tankers 30 AS, the company that owns theAnna Knutsen, from KNOT. The acquisition of theAnna Knutsen was accounted for as an acquisition of an asset. As a result, the Partnership has recorded the results of December 31, 2015,operations of the Partnership’s netAnna Knutsen in its consolidated statement of operations from March 1, 2018. See Note 21—Acquisitions.

            The Partnership expects that its primary future sources of funds will be available cash, cash from operations, borrowings under any new loan agreements and the proceeds of any equity financings. The Partnership believes that these sources of funds (assuming the current liabilities were $39.3 million. Included in current liabilities are short termrates earned from existing charters) will be sufficient to cover operational cash outflows and ongoing obligations under the Partnership's financing commitments to pay loan obligations that mature before December 31, 2016interest and are therefore, presented as current debt. Furthermore, included within current liabilitiesmake scheduled loan repayments and to make distributions on its outstanding units. Accordingly, as of December 31, 2015, are: (i) mark-to-market valuations of swap derivatives and foreign exchange forward contracts of $5.1 million of which $3.8 million is mark-to-market valuations of interest rate swap derivatives and $1.3 million is mark-to-market valuation of foreign exchange forward contracts. The swaps mature between 2018 and 2024. TheApril 10, 2019, the Partnership has no intention of terminating these swaps before their maturity dates and hence realizing theses liabilities; (ii) prepaid charter and deferred revenues of $3.4 million which relate to charter hire received in advance from charterers; and (iii) contract liabilities of $1.5 million, which isbelieves that its current resources, including the currentundrawn portion of contractual rightsits revolving credit facilities of $28.7 million, are sufficient to meet working capital requirements for charters obtained in connection with a step acquisition that had unfavorable terms. The unfavorable contract liabilities of $1.5 million will amortize during 2016, thus no cash outflows are expected in respect of these liabilities inits current business for at least the next twelve months.


    Table of Contents


    KNOT OFFSHORE PARTNERS LP

    Notes to Consolidated Financial Statements (Continued)

    2) Summary of Significant Accounting Policies

    (a)
    Basis of Preparation

    The consolidated and combined carve-out financial statements are prepared in accordance with accounting principles generally accepted in the United States (“("U.S. GAAP”GAAP"). All intercompany balances and transactions are eliminated.

    The consolidated and combined carve-out financial statements include the financial statements of the entities listed in Note 4—Subsidiaries.

    As of April 16, 2013, the financial statements of the Partnership as a separate legal entity are presented on a consolidated basis. Prior to April 16, 2013, the results of operations, cash flows

    (b)
    Business Combinations and balance sheet have been carved out of the consolidated financial statements of KNOT and therefore are presented on a combined carve-out basis. As of February 27, 2013, KNOT Shuttle Tankers AS acquired the 100% ownership in KNOT Shuttle Tankers 12 AS, KNOT Shuttle Tankers 17 AS, KNOT Shuttle Tankers 18 AS, and Knutsen Shuttle Tankers XII AS in a reorganization under common control. As of February 27, 2013, KNOT Shuttle Tankers 12 AS and Knutsen Shuttle Tankers XII AS owned a 90% and 10% ownership interest, respectively, in Knutsen Shuttle Tankers XII KS; and KNOT Shuttle Tankers 17 AS owned a 100% interest in theBodil KnutsenAsset Acquisitions and KNOT Shuttle Tankers 18 AS owned a 100% interest in theWindsor Knutsen. As a reorganization of entities under common control, the transfer of the subsidiaries and other net assets has been recorded at KNOT’s historical book value.

    TheBodil Knutsen and theWindsor Knutsen were not operated as discrete units or included in single purpose legal entities. Accordingly, these Vessels have been “carved-out” of KNOT’s assets, liabilities, revenues, expenses and cash flows as they relate to the Combined Entity’s business through the use of the information system of KNOT. Specific information is recorded and coded by vessel for each accounting transaction for certain line items in the combined carve-out financial statements. Therefore, amounts for such Vessels were specifically identified for revenues, vessel expenses, vessel operating expenses, depreciation and amortization, interest expense and related debt issuance cost for long-term debt and realized and unrealized losses on derivative instruments; and related balances for such Vessels were specifically identified for trade accounts receivable, inventories, prepaid expenses, vessels and equipment, intangible assets, trade accounts payable, certain accrued expenses, prepaid charter revenues, long-term debt, derivative liabilities and contract liabilities.

    Vessels operating expenses includes ship management fees for the provision of technical and commercial management of Vessels and are based on intercompany charges invoiced by KNOT. All long-term debt is specifically related to financing of the individual Vessels. Derivatives are composed of interest rate swap derivatives and foreign exchange forward contracts. The interest rate swaps were entered into in conjunction with the individual Vessel financing to secure fixed interest rates. The interest rate swaps are included in the combined carve-out financial statements to reflect all of the historical cost of doing business even though they will not be transferred to the Partnership. The foreign exchange forward contracts were entered into in conjunction with the construction of certain of the individual Vessels to secure the amounts payable in foreign currencies.

    The following items, which are not directly attributable to the Vessels, have been allocated to the combined carve-out financial statements as set forth below:

            

    General and administrative expenses of KNOT were invoiced to its subsidiaries based upon certain transfer pricing principles by type of cost. See Note 18—Related Party Transactions. The invoiced amounts that cannot be attributed to theBodil Knutsen and theWindsor Knutsen have been allocated pro rata based on the number of vessels in KNOT’s fleet.

    Cash and cash equivalents for general purposes at the legal entity level have not been allocated. The cash and cash equivalents and restricted cash balances are only included in the combined carve-out balance sheets to the extent they are specifically related to theBodil Knutsen’s and theWindsor Knutsen’s petty cash or provisions of the loan agreements. Interest income cannot be attributed to the specific Vessels and has only been included in the combined carve-out financial statements to the extent it relates to an interesting bearing cash account included in the combined carve-out balance sheets.

    Payables to owners and affiliates (“owner balances”) are not tracked on an individual Vessel basis for theBodil Knutsen and theWindsor Knutsen but at the legal entity level. General allocations of owner balances based on the number of vessels within a legal entity would be inherently arbitrary. Therefore, the Combined Entity has identified specific payments made by owners to shipyards on Vessels under construction or conversion on behalf of the legal entity owning the Vessel and reflected these balances as payable to owners and affiliates, adjusted for subsequent external bank refinancing or settlements of payables at the legal entity level, in the combined carve-out balance sheet. Interest expense has been allocated on the basis of these owner balances and the historical intercompany interest rates charged by the owners to its subsidiaries on owner balances.

    Net gain (loss) of foreign currency transactions cannot be attributed directly to theBodil Knutsen and theWindsor Knutsen and has been allocated based upon specifically identified or allocated balances included on the combined carve-out balance sheets.

    Goodwill arose in 2008 when TSSI acquired the remaining 50% interest in the majority of KNOT’s vessels, including theWindsor Knutsen and the three other Vessels of the Combined Entity under construction, in a transaction that was accounted for as a step acquisition. This transaction resulted in goodwill for KNOT. KNOT’s goodwill was allocated to the Combined Entity based upon the Combined Entity percentage of fair value of the Vessel, the Vessels under construction and the favorable or unfavorable charter contract rights acquired at the acquisition date to the total fair value acquired by KNOT for all vessels, vessels under construction and favorable or unfavorable charter contract rights. See Note 2(n)—Summary of Significant Accounting Policies—Goodwill and Intangibles, Note 8—Goodwill Impairment Charge, and Note 14—Intangible Assets and Contract Liabilities.

    The Partnership’s activities included in the consolidated and combined carve-out financial statements contain Norwegian entities or activities that were organized as non-taxable partnerships or were without tax status. To reflect the historical cost of doing business, the income tax expense and related deferred tax assets and liabilities arising for the Combined Entity activities included in the historical parent entities have been included in the consolidated and combined carve-out financial statements calculated on a separate return basis.

    The Vessels of the Partnership were not historically owned by a separate legal entity or operated as a discrete group. Therefore, no separate share capital existed in owner’s equity. Further, certain Vessels had cash accounts shared with other vessels of the KNOT Group that were not allocated to the Combined Entity.

    Accordingly, the historical consolidated and combined carve-out financial statements prior to April 16, 2013 reflect allocations of certain expenses, including that of general and administrative expenses, mark-to-market valuations of interest rate swap derivatives, interest expense on related party payables and net gain (loss) on foreign currency transactions. These allocated costs have been accounted for as equity contribution in the consolidated and combined carve-out balance sheets. Included in the Combined Entity’s equity prior to April 16, 2013 are amounts (net liabilities of $27.8 million) relating to certain assets and liabilities that were carved out as they were readily separable and identifiable within the books of KNOT. However, these amounts have been retained by KNOT and have not been transferred to the Partnership and therefore have been eliminated from the Partnership’s opening equity as of April 16, 2013. Details of the net liabilities eliminated are as follows:

    (U.S. Dollars in thousands)    

    Balance sheet captions:

      

    Other current assets

      $89  

    Other non-current assets

       —   

    Other current liabilities (*)

       (6,321

    Other long-term liabilities (*)

       (21,560
      

     

     

     

    Net liabilities

      $(27,792
      

     

     

     

    (*)The majority of the assets and liabilities not transferred to the Partnership are related to interest swap derivatives (Note 10) and insurance proceeds pursuant to the Contribution and Sale Agreement entered into in connection with the closing of the IPO on April 15, 2013.

    Management believes that the allocations included in these consolidated and combined carve-out financial statements are reasonable to present the financial position, results of operations and cash flows of the Partnership on a stand-alone basis. However, the financial position, results of operations and cash flows of the Combined Entity as presented may differ from those that would have been achieved had the Partnership operated autonomously for all years presented as the Partnership would have had additional general and administrative expenses, including legal, accounting, treasury and regulatory compliance and other costs normally incurred by a stand-alone listed publicly traded entity for the periods prior to the IPO. Accordingly, the consolidated and combined carve-out financial statements do not purport to be indicative of the future financial position, results of operations or cash flows of the Partnership.

    Business combinations

    Reorganization of entities under common control is accounted for similar to the pooling of interests method of accounting. Under this method, the carrying amount of net assets recognized in the balance sheets of each combining entity are carried forward to the balance sheet of the combined entity, and no other assets or liabilities are recognized as a result of the combination. The excess of the proceeds paid, if any, over the historical cost of the combining entity is accounted for as an equity distribution. In addition, re-organization of entities under common control is accounted for as if the transfer occurred from the date that both the combining entity and combined entity were both under common control. Therefore, the Partnership’s financial statements prior to the date the interests in the combining entity were actually acquired are retroactively adjusted to include the results of the combined entity during the periods it was under common control of KNOT.

    As discussed in Note 1—Description of Business, under the Partnership’s Partnership Agreement, the General Partner has irrevocably delegated to the Partnership’s board of directors the power to oversee and direct the operations of, manage and determine the strategies and policies of the Partnership. During the period from the IPO in April 2013 until the time of the Partnership’s first AGM on June 25, 2013, the General Partner retained the sole power to appoint, remove and replace all members of the Partnership’s board of directors. From the date of the Partnership’s first annual meeting of common unitholders, four of the seven board members became electable by the common unitholders and accordingly, from this date, KNOT, as the owner of the General Partner, no longer retains the power to control the Partnership’s board of directors and, hence, the Partnership. As a result, the Partnership is no longer considered to be under common control with KNOT and as a consequence, the Partnership has not accounted for any acquisitions from KNOT after June 25, 2013 as a transfer of equity interests between entities under common control.

    Business combinations are accounted for under the acquisition method.purchase method of accounting. On acquisition, the identifiable assets, liabilities and contingent liabilities are measured at their fair values at the date of acquisition. Any excess of the cost of acquisition over the fair values of the identifiable net assets acquired is recognized as goodwill. Any deficiency of the cost of acquisition below the fair values of the identifiable net assets acquired (i.e. bargain purchase) is credited to the statement of operations in the period of acquisition. The consideration transferred for an acquisition is measured at fair value of the consideration given. Acquisition related costs are expensed as incurred. The results of operations of the acquired businesses are included in the consolidated results as of the date of the applicable acquisition.

            Dependent on the facts and circumstances, the assessment of a transaction may be considered the acquisition of an asset, when substantially all of the fair value of assets acquired is concentrated in a single identifiable asset, rather than a business combination. Asset acquisitions are accounted for by allocating the cost of the acquisition to the individual assets acquired and liabilities assumed on a relative fair value basis. Acquisition related costs are capitalized as a component of the assets acquired.

    (b) (c)
    Reporting Currency

    The consolidated and combined carve-out financial statements are prepared in the reporting currency of U.S. Dollars. The functional currency of the vessel-owning Partnership subsidiaries is the U.S. Dollar, because the subsidiaries operate in the international shipping market, in which all revenues are U.S. Dollar-denominated and the majority of expenditures are made in U.S. Dollars. Transactions involving other currencies during the year are converted into U.S. Dollars using the exchange rates in effect at the time of the transactions. As of the balance sheet dates, monetary assets and liabilities that are denominated in currencies other than the U.S. Dollar are translated to reflect the year-end exchange rates. Resulting gains or losses are reflected separately in the accompanying consolidated and combined carve-out statements of operations.

    (c) (d)
    Use of Estimates

    The preparation of consolidated and combined carve-out financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements, and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include the useful lives and impairment of Vessels, drydocking, the estimates of future cash flows and use of discount rate and impairment of Goodwill, the valuation of derivativespurchase price allocation and income taxes.

    (d) (e)
    Revenues and Operating Expenses

    The Partnership recognizes revenues from time charters and bareboat charters as operating leases on a straight-line basis over the term of the charter, net of any commissions. Under time charters, revenue is not recognized during days the Vessel is off-hire. Revenue is recognized from delivery of the Vessel to the charterer, until the end of the contract period. Under time charters, the Partnership is


    Table of Contents


    KNOT OFFSHORE PARTNERS LP

    Notes to Consolidated Financial Statements (Continued)

    2) Summary of Significant Accounting Policies (Continued)

    responsible for providing the crewing and other services related to the Vessel’sVessel's operations, the cost of which is included in the daily hire rate, except when off-hire. Fees received from customers for customized equipment are deferred and recognized over the contract period. Under bareboat charters, the Partnership provides a specified Vessel for a fixed period of time at a specified day rate. The PartnershipWhere the term of the contract is based on the duration of a single voyage, the partnership evaluates whether the voyage contain leases and if so recognize lease revenue as described above, and when not, recognizes revenues from spot contracts as voyage revenues using the percentage of completion methodrevenue ASC 606 over time on a discharge-to-dischargeload-to-discharge basis.

    Voyage expenses are all expenses unique to a particular voyage, including bunker fuel expenses, port fees, cargo loading and unloading expenses, canal tolls and agency fees. Voyage expenses are paid by the customer under time charter and bareboat charters. Voyage expenses are paid by the Partnership for spot contracts and during periods of off-hire and are recognized when incurred.

    Vessel operating expenses include crewing, repairs and maintenance, insurance, stores, lube oils and communication expenses. Vessel operating expenses are paid by the Partnership for time charters, spot contracts and during off-hire and are recognized when incurred.

    As further discussed in Note 18—Related Party Transactions, related parties have provided the management services for the Vessels and employ the crews that work on the Vessels. The Partnership has no direct employees and, accordingly, is not liable for any pension or post-retirement benefits.

    (e) (f)
    Financial Income (Expense)

    Interest expense incurred on the Partnership’s debt incurred during the construction of the Vessels exceeding one year are capitalized during the construction period.

    Other finance expense includes external bank fees, commitment fees paid on undrawn revolving credit facility, financing service fees paid to related parties and guarantee commissions paid to external and related parties in connection with the Partnership’sPartnership's debt and other bank services.

    (f) (g)
    Cash and Cash Equivalents

    The Partnership considers all highly liquid investments with an original maturity of three months or less when purchased to be cash equivalents.

    (g) (h)
    Restricted Cash

    Restricted cash consists of bank deposits, which may only be used to settle principal payments under the Partnership’sPartnership's Vessel financing agreements.arrangements.

    (h) (i)
    Trade Accounts Receivable

    Accounts receivable are recorded at the invoiced amount and do not bear interest. Under terms of the current time charters and bareboat charters, the customers are committed to pay for the full month’smonth's charter the first day of each month. See Note 2(r)2(s)—Prepaid Charter and Deferred Revenue.Charter. The allowance for doubtful accounts is the Partnership’sPartnership's best estimate of the amount of probable credit losses in existing accounts receivable. The Partnership establishes provisions for doubtful accounts on a case-by-case basis when it is unlikely that required payments of specific amounts will occur. In establishing these provisions, the Partnership considers the financial condition of the customer as well as specific circumstances related to the receivable. Receivable amounts determined to be unrecoverable are written-off. There were no allowances for doubtful accounts or amounts written off against the allowance for doubtful accounts as of December 31, 20152018 and 2014.2017. The Partnership does not have any off-balance-sheet credit exposure related to its customers.


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    KNOT OFFSHORE PARTNERS LP

    Notes to Consolidated Financial Statements (Continued)

    2) Summary of Significant Accounting Policies (Continued)

    (i) (j)
    Inventories

    Inventories, which are comprised principally of lubricating oils, are stated at the lower of cost or market.net realizable value. For vessels on time charters or bareboat charters, there are no bunkers, as the charterer supplies the bunkers, which principally consist of fuel oil. Cost is determined using the first-in, first-out method for all inventories.

    (j) (k)
    Other Current Assets

    Other current assets principally consist of prepaid expenses the current portion of deferred cost and other receivables.

    (k) (l)
    Vessels and Equipment

    Vessels and equipment are stated at the historical acquisition or construction cost, including capitalized interest, supervision and technical and delivery cost, net of accumulated depreciation and impairment loss, if any. Expenditures for subsequent conversions and major improvements are capitalized, provided that such costs increase the earnings capacity or improve the efficiency or safety of the vessels.

    Generally, the Partnership drydocks each vessel every 60 months until the vessel is 15 years old and every 30 months thereafter, as required for the renewal of certifications issued by classification societies. For vessels operating on time charters, the Partnership capitalizes the costs directly associated with the classification and regulatory requirements for inspection of the vessels major repairs and improvements incurred during drydocking. Drydock cost is depreciated on a straight-line basis over the period until the next planned drydocking takes place. The Partnership expenses costs related to routine repairs and maintenance performed during drydocking or as otherwise incurred. For vessels that are newly built or acquired, an element of the cost of the vessel is initially allocated to a drydock component and depreciated on a straight-line basis over the period until the next planned drydocking. When significant drydocking expenditures occur prior to the expiration of this period, the Partnership expenses the remaining balance of the original drydocking cost in the month of the subsequent drydocking. For vessels operating on bareboat charters, the charterparty bears the cost of any drydocking.

    Depreciation on vessels and equipment is calculated on a straight-line basis over the asset’sasset's estimated useful life, less an estimated residual value, as follows:


    Useful Life

    Hull

     25 years

    Anchor-handling, loading and unloading equipment

     25 years

    Main/auxiliary engine

     25 years

    Thruster, dynamic positioning systems, cranes and other equipment

     25 years

    Drydock costs

     2.5–2.5 - 5 years

    A Vessel is depreciated to its estimated residual value, which is calculated based on the weight of the ship and estimated steel price. Any cost related to the disposal is deducted from the residual value.

    (l) (m)
    Capitalized Interest

    Interest expense incurred on the Partnership’sPartnership's debt during the construction of the Vessels exceeding one year is capitalized during the construction period.


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    KNOT OFFSHORE PARTNERS LP

    Notes to Consolidated Financial Statements (Continued)

    2) Summary of Significant Accounting Policies (Continued)

    (m) (n)
    Impairment of Long-Lived Assets

    Vessels and equipment, vessels under construction and intangible assets subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If circumstances require a long-lived asset or asset group to be tested for possible impairment, the Partnership first compares undiscounted cash flows expected to be generated by that asset or asset group to its carrying value. If the carrying value of the long-lived asset or asset group is not recoverable on an undiscounted cash flow basis, impairment is recognized to the extent that the carrying value exceeds its fair value. Fair value is determined through various valuation techniques including discounted cash flow models, quoted market values and third-party independent appraisals, as considered necessary.

    (n) (o)
    Goodwill and Intangibles

    The Partnership allocates the cost of acquired companies to the identifiable tangible and intangible assets and liabilities acquired, with the remaining amount being classified as goodwill. Goodwill is not amortized but is reviewed for impairment annually or more frequently if impairment indicators are identified.

    The Partnership tests goodwill for impairment using a two-step analysis, with the option of performing a qualitative assessment before performing the first step of the two-step analysis, whereby the carrying value of the reporting unit is compared to its fair value in the first step. If the carrying value of the reporting unit is greater than its fair value, the second step is performed, where the implied fair value of goodwill is compared to its carrying value. An impairment charge is recognized for the amount by which the carrying amount of goodwill exceeds its fair value. The fair value is estimated using the net present value of discounted cash flows of the reporting unit. The Partnership has only one reporting unit.

    Other intangible        Intangible assets represent contractual rights for charters obtained in connection with a step acquisitionbusiness and asset acquisitions that hadhave favorable contractual terms relative to market as of the acquisition date. Contractualdates. Contract liabilities represent contractual rights for charters obtained in connection with a step acquisitionbusiness acquisitions that hadhave unfavorable contractual terms are classifiedrelative to market as contract liabilities inof the consolidated and combined carve-out balance sheets.acquisition dates. The favorable and unfavorable contract rights have definite lives and are amortized to revenues over the period of the contract.related contracts. Intangible assets with a definite life are tested for impairment whenever events or circumstances indicate that their carrying amount may not be recoverable. An impairment loss is recognized if the carrying amount exceeds the estimated fair value of the asset.

            The contract related intangible assets and liabilities and their amortization periods at acquisition dates are as follows:

    Intangible category
    Amortization
    Period

    Above market time charter—Tordis Knutsen

    4.8 years

    Above market time charter—Vigdis Knutsen

    4.9 years

    Unfavorable contractual rights—Fortaleza Knutsen

    12 years

    Unfavorable contractual rights—Recife Knutsen

    12 years

            The intangible for the above market value of the time charter contract associated with theTordis Knutsen is amortized to time charter revenue on a straight line basis over the remaining term of the


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    KNOT OFFSHORE PARTNERS LP

    Notes to Consolidated Financial Statements (Continued)

    2) Summary of Significant Accounting Policies (Continued)

    contract of approximately 4.8 years as of the acquisition date. The intangible for the above market value of the time charter contract associated with theVigdis Knutsen is amortized to time charter revenue on a straight line basis over the remaining term of the contract of approximately 4.9 years as of the acquisition date.

            The unfavorable contractual rights for charters associated withForaleza Knutsen andRecife Knutsen were obtained in connection with a step acquisition in 2008 that had unfavorable contractual terms relative to market as of acquisition date. TheFortaleza Knutsen and theRecife Knutsen commenced on their 12 years' fixed bareboat charters in March 2011 and August 2011, respectively. The unfavorable contract rights related toFortaleza Knutsen andRecife Knutsen are amortized to bareboat revenues on a straight line basis over the 12 years' contract period that expires in March 2023 and August 2023, respectively.

    (o) (p)
    Debt Issuance Costs

    Debt issuance costs, including fees, commissions and legal expenses, are deferred.deferred and presented net of debt. Debt issuance costs of term loans are amortized over the term of the relevant loan. Amortization of debt issuance costs is included in interest expense. These costs are presented as a deduction from the corresponding liability, consistent with debt discount.

    (p) (q)
    Derivative Instruments

    The Partnership uses derivatives to reduce market risks associated with its operations. The Partnership uses interest rate swaps for the management of interest risk exposure. The interest rate swaps effectively convert a portion of the Partnership’sPartnership's debt from a floating to a fixed rate over the life of the transactions without an exchange of underlying principal.

    The Partnership seeks to reduce its exposure to fluctuations in foreign exchange rates through the use of foreign currency forward contracts.

    All derivative instruments are initially recorded at fair value as either assets or liabilities in the accompanying consolidated and combined carve-out balance sheets and subsequently measured to fair value. The Partnership does not apply hedge accounting to its derivative instruments. Changes in the fair value of the derivative instruments are recognized in earnings. Gains and losses from the interest rate swap contracts of the Partnership related to long-term mortgage debt and foreign exchange forward contracts are recorded in realized and unrealized gain (loss) on derivative instruments in the consolidated and combined carve-out statements of operations. Cash flows related to interest rate swap contracts are presented as cash flows provided by operating activities. Cash flows related to foreign exchange forward contracts entered into to economically hedge operating expenses in currencies other than U.S. Dollars are presented as cash flows provided by operating activities in the consolidated and combined carve-out statements of cash flows, while cash flows related to foreign exchange forward contracts entered into to hedge contractual obligations to pay the shipyard in currencies other than functional currency of U.S. Dollars are presented as cash flows used in investing activities in the consolidated and combined carve-out statements of cash flows.

    (q) (r)
    Income Taxes

    Historically, part of the Partnership’sPartnership's activities were subject to ordinary taxation and taxes were paid on taxable income (including operating income and net financial income and expense), while part of the activities were subject to the Norwegian Tonnage Tax regimeRegime (the “tonnage"tonnage tax regime”regime"). Under the tonnage tax regime, the tax is based on the tonnage of the vessel, and operating income is tax free.


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    KNOT OFFSHORE PARTNERS LP

    Notes to Consolidated Financial Statements (Continued)

    2) Summary of Significant Accounting Policies (Continued)

    The net financial income and expense remains taxable as ordinary income tax for entities subject to the tonnage tax regime. Income taxes arising from the part of activities subject to ordinary taxation are included in income tax expense in the consolidated and combined carve-out statements of operations. For the portion of activities subject to the tonnage tax regime, tonnage taxes are classified as vessel operating expenses while the current and deferred taxes arising on net financial income and expense are reflected as income tax expense in the consolidated and combined carve-out statements of operations. The amounts of tonnage tax included in operating expenses for the years ended December 31, 2015, 20142018, 2017 and 20132016 were $132,000, $126,000$0.3 million, $0.2 million and $100,000,$0.2 million, respectively.

    The Partnership accounts for deferred income taxes using the liability method. Under the liability method, deferred tax assets and liabilities are recognized for the anticipated future tax effects of temporary differences between the financial statement basis and the tax basis of the Partnership’sPartnership's assets and liabilities using enacted tax rates expected to apply to taxable income in the years in which these temporary differences are expected to be recovered or settled. A valuation allowance for deferred tax assets is recorded when it is more likely than not that some or all of the benefit from the deferred tax asset will not be realized.

    Recognition of uncertain tax positions is dependent upon whether it is more-likely-than-not that a tax position taken or expected to be taken in a tax return will be sustained upon examination, including resolution of any related appeals or litigation processes, based on the technical merits of the position. If a tax position meets the more-likely-than-not recognition threshold, it is measured to determine the amount of benefit to recognize in the financial statements based on U.S. GAAP guidance. The Partnership recognizes interest and penalties related to uncertain tax positions in income tax expense.

    (r) (s)
    Prepaid Charter and Deferred Revenue

    Under terms of the time charters and bareboat charters, the customer pays for the month’smonth's charter the first day of each month that is recorded as prepaid charter revenues. Deferred revenues for fees received from customers for customized equipment are classified as prepaid charter and deferred revenue for the current portion and as other long-term liabilities for the non-current portion.

    (s) (t)
    Commitments, Contingencies and Insurance Proceeds

    Liabilities for loss contingencies arising from claims, assessments, litigation, fines and penalties and other sources are recorded when it is probable that a liability has been incurred and the amount can be reasonably estimated. Legal costs incurred in connection with loss contingencies are expensed as incurred. See Note 19—Commitments and Contingencies.

    Insurance claims for property damage for recoveries up to the amount of loss recognized are recorded when the claims submitted to insurance carriers are probable of recovery. Claims for property damage in excess of the loss recognized and for loss off-hireof hire are considered gain contingencies, which are generally recognized when the proceeds are received.

    (t) (u)
    Fair Value Measurements

    The Partnership utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible. The Partnership determines fair value based on assumptions that market participants would use in pricing an asset or liability in the principal or most advantageous market. When considering market participant assumptions in fair value


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    KNOT OFFSHORE PARTNERS LP

    Notes to Consolidated Financial Statements (Continued)

    2) Summary of Significant Accounting Policies (Continued)

    measurements, the following fair value hierarchy distinguishes between observable and unobservable inputs, which are categorized in one of the following levels:

    Level 1 Inputs: Unadjusted quoted prices in active markets for identical assets or liabilities accessible to the reporting entity at the measurement date.

    Level 2 Inputs: Other than quoted prices included in Level 1 inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the asset or liability.

    Level 3 Inputs: Unobservable inputs for the asset or liability used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date.

      Level 1 Inputs:  Unadjusted quoted prices in active markets for identical assets or liabilities accessible to the reporting entity at the measurement date.

      Level 2 Inputs:  Other than quoted prices included in Level 1 inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the asset or liability.

      Level 3 Inputs:  Unobservable inputs for the asset or liability used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date.

    (u) Accounting Pronouncement Not Yet(v)
    Recently Adopted

    New Accounting Standards not yet adopted

    In May 2014, the Financial Accounting Standards Board (FASB) andFASB issued ASU 2014-09,Revenue from Contracts with Customers (ASC 606), as subsequently updated by the International Accounting Standards Board (IASB) issued a comprehensiveFASB, which provides new authoritative guidance on the methods of revenue recognition and related disclosure requirements. This new standard that will supersede virtually all of thesupersedes existing revenue recognition requirements, including most industry-specific guidance. The new standard is intendedrequires a company to increase comparability across industries and jurisdictions. The single, globalrecognize revenue recognition model applies to most contacts with customers. Leases, insurance contracts, financial instruments, guarantees and certain non-monetary transactions are excluded from the scope of the guidance. Revenue will be recognized in a manner that depicts the transfer ofwhen it transfers goods or services to customers in an amount that reflects the consideration to which an entitythat the company expects to be entitled, subjectreceive for those goods or services. This update creates a five-step model and requires a company to certain limitations.exercise judgment when considering the terms of the contract(s) which include (i) identifying the contract(s) with the customer, (ii) identifying the separate performance obligation in the contract, (iii) determining the transaction price, (iv) allocating the transaction price to the separate performance obligations, and (v) recognizing revenue as each performance obligation is satisfied. Under the new standard, additional qualitative and quantitative disclosures are required. Effective January 1, 2018, the Partnership adopted the requirements ofASC 606 to new and existing contracts not yet completed as of January 1, 2018, using the modified retrospective approach where the cumulative effect of initially applying the standard is recorded as an adjustment to the opening balance of equity. The FASB deferred by one yearPartnership made an assessment on the effective datevarious implementation aspects of ASU 2014-09 and its newamendments, and since there are no changes to the timing or amount of revenue recognition standard for public and nonpublic entities reporting under U.S. GAAP. Therecognized, the Partnership has concluded that the effect of the implementation of this new revenue recognition standard will be effective for public entities for annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Public entities will be permittedcause no material cumulative effect to adopt the standard as early as the original public entity effective date (i.e., annual reporting periods beginning after December 15, 2016 and interim periods therein). Early adoption prior to that date is not permitted. The Partnership is assessing what impact, if any, the adoption of the guidance will have on itsPartnership's historical or future financial position, results of operations or cash flows.

            In January 2017, the FASB issued ASU 2017-01,Business Combinations: Clarifying the Definition of a Business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The Partnership adopted this ASU prospectively from January 1, 2018. As a result, this increases the likelihood that future dropdowns of Vessels may be considered the acquisition of an asset rather than a business combination.

            On March 1, 2018, the partnership's wholly owned subsidiary, KNOT Shuttle tankers AS, acquired KNOT's 100% interest in KNOT Shuttle Tankers 30 AS ("KNOT 30"), the company that owns and operates the Anna Knutsen. Following the adoption of ASU 2017-01,Business Combinations: Clarifying the Definition of a Business, the Partnership accounted for this acquisition as an acquisition of an asset. The cost of the group of assets acquired in the asset acquisition has been allocated to the individual assets acquired or liabilities assumed based on their relative fair values. See the Note 21—Acquisitions.


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    KNOT OFFSHORE PARTNERS LP

    Notes to Consolidated Financial Statements (Continued)

    2) Summary of Significant Accounting Policies (Continued)

            In August 2016, the FASB issued ASU 2016-15,Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments. The new guidance clarifies how the predominance principle should be applied when cash receipts and cash payments have aspects of more than one class of cash flows. The Partnership adopted this ASU on January 1, 2018. The Partnership's adoption of this standard did not have a material impact on the Partnership's consolidated statement of cash flows or related disclosures.

    In August 2014,November 2016, the FASB issued PresentationASU 2016-18,Statement of Financial Statements – Going Concern (Subtopic 205-40), DisclosuresCash Flows: Restricted Cash, which requires that restricted cash be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts presented on the statement of Uncertainties about an Entity’s Abilitycash flows. The standard eliminates the presentation of transfers between cash and cash equivalents and restricted cash and restricted cash equivalents in the statement of cash flows. Additional disclosures are required for the nature of the restricted cash and restricted cash equivalents. The Partnership adopted this ASU on January 1, 2018 under a retrospective approach. The Partnership's adoption of this standard did not have a material impact on the Partnership's consolidated statement of cash flows or related disclosures.

            There are no other recent accounting pronouncements, whose adoption had a material impact on the consolidated financial statements in the current year.

    (w)
    New Accounting Standards Not Yet Adopted

            In February 2016, the FASB issued ASU 2016-02,Leases (ASC 842). The objective is to Continue as a Going Concern (Accounting Standards Update (ASU) 2014-15). ASU 2014-15 provides guidance in GAAP about management’s responsibilityestablish the principles that lessors and lessees shall apply to evaluate whether there are conditions and events that raise substantial doubtreport useful information to users of financial statements about the entity’s ability to continue asamount, timing and uncertainty of cash flows arising from a going concern within one year afterlease. The Partnership is the financial statements are issued (or available to be issued when applicable)lessor for its Vessels that operate on time charters and if so, disclose that fact. Managementbareboat charters. Accounting by a lessor is largely unchanged from the previous standard. The Partnership does not have any material leased assets. A lessee will be required to recognize in its balance sheet a lease liability to make lease payments and a right-of-use asset. The standard requires a modified retrospective transition method for all entities and the standard provides for optional practical expedients in implementing the standard under the modified retrospective approach.

            In July 2018, the FASB issued targeted improvements to the leasing guidance allowing for an additional optional transition method that allow entities to initially apply the new lease standard and its disclosures at the transition date and recognize a cumulative-effect adjustment to the opening balance of retained earnings. The Partnership has elected to use this evaluation for both annual and interim reporting periods, if applicable. Management also is required to evaluate and disclose whether its plans alleviate that doubt.optional transition approach. The standard is effective for annual periods after December 15, 2016 and interim periods within annual periods beginning after December 15, 2016. Early adoption is permitted. The Partnership is evaluating the effect of adopting this new accounting guidance. The Partnership does not expect the adoption of this standard to have a material impact on the consolidated and combined financial statements.

    In April 2015, FASB issued Interest – Imputation of Interest (Subtopic 835-30), Simplifying the Presentation of Debt Issuance Costs. ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability rather than as an asset. This will make the presentation of debt issuance costs consistent with the presentation of debt discounts or premiums. The guidance also addresses the long-standing conflict with the conceptual framework and improves consistency with International Financial Reporting Standards (IFRS).The recognition and measurement guidance for debt issuance costs is not affected. The standard does not address the presentation of costs that does not have an associated liability. The guidance is effective for annual and interim periods beginning after December 15, 2015. Early adoption is permitted. The Partnership has not yet adopted ASU 2015-03. The adoption of the new standard will have an impact on the Partnership’s balance sheets and reduce total assets and total liabilities and will be applied retrospectively.

    In June 2015, FASB issued Technical Corrections and Improvements (ASU 2015-10) to correct differences between original guidance and the ASC, clarify the guidance, correct references and make minor improvements affecting a variety of topics. While most of the amendments are not expected to have a significant effect on practice, some of them could change practice for some entities. Amendments that the FSAB deemed more substantive are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. The other amendments are effective immediately. The Partnership is assessing what impact, if any, this guidance will have on its consolidated and combined financial position, results of operations and cash flows.

    In August 2015, FASB issued ASU 2015-15 to incorporate into the Accounting Standards Codification (ASC) an SEC staff announcement that the SEC staff will not object to an entity presenting the cost of securing a revolving line of credit as a deferred asset, regardless of whether a balance is outstanding. The announcement came in response to questions that arose after the FASB

    issued ASU 2015-03 Interest – Imputation of interest (Subtopic 835-30) – Simplifying the Presentation of Debt Issuance Costs. The standard, as issued, did not address revolving lines of credit, which may not have outstanding balances. An entity that repeatedly draws on a revolving credit facility and then repays the balance could present the cost as a deferred asset and reclassify all or a portion of it as a direct deduction from the liability whenever a balance is outstanding. However, the SEC staff’s announcement provides a less cumbersome alternative. Either way, the cost should be amortized over the term of the arrangement. The guidance is effective upon announcement by the SEC staff on June 18, 2015. The Partnership is assessing what impact, if any, the adoption of this guidance will have its financial position and it may have an impact on the balance sheets depending on whether the Partnership withdraws and use it revolving line of credit.

    In November 2015, FASB issued guidance on Income Taxes (Topic 740), Balance Sheet Classification of Deferred Taxes (ASU 2015-17). Companies are required to classify all deferred tax assets and liabilities as noncurrent on the balance sheet instead of separating deferred taxes into current and noncurrent amount. Also, companies will no longer allocate valuation allowances between current and noncurrent deferred tax assets because those allowances also will be classified as noncurrent. The FASB staff is performing additional research on companion proposal requiring companies to immediately recognize income tax expenses or benefits on intercompany transactions. Since early adoption of the guidance is permitted, companies can start applying it in interim and annual financial statements that have not yet been issued. For public business entities the guidance is effective for financial statements issued for annual periods beginning after December 15, 2016, and2018, including interim periods within those annual periods. ForThe Partnership will adopt ASC 842 and implement the revised guidance as of January 1, 2019. The Partnership will apply the package of practical expedients, but not the hindsight practical expedients since the use of hindsight practical expedient only impacts lease classification if the package of practical expedients is not elected. The Partnership will not reassess whether any expired or existing contracts are, or contain leases, will not reassess lease classification, and will not reassess initial direct costs for any existing leases. Additionally, the practical expedient of disregarding short-term leases for agreements with lease terms of 12 months or less as a lessee and the expedient of not separating lease components from non-lease components will be used for all other entities,classes of underlying assets in the guidance is effectivePartnership. Based upon assessments performed to date, the Partnership does not expect material effects on the accounting for existing leases applied in the consolidated financial statements issued for annual periods beginning after December 15, 2017, and interim periods within annual periods beginning after December 15, 2018. Companies can adoptwhere the guidance either prospectively or retrospectively. The Partnership is assessing what impact, if any, this guidancethe lessor. Under ASU 2016-02, the Partnership will have on its consolidatedrecognize a right-of-use asset and combined financial position.

    There are no other recent accounting pronouncements issued whose adoption would have a material impactlease liability on the Partnership’s combined consolidatedbalance sheet for certain leases where the Partnership is the lessee


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    KNOT OFFSHORE PARTNERS LP

    Notes to Consolidated Financial Statements (Continued)

    2) Summary of Significant Accounting Policies (Continued)

    based on the present value of future minimum lease payments, whereas currently no right-of-use asset or lease liability is recognized. Based on the analysis performed by the Partnership to date, the right of use asset and combined carve-out financial statements in the current year or arelease liability to be recognized on January 1, 2019 is expected not to have a material impact on future years.be material.

    3) Formation Transactions and Initial Public Offering

    During April 2013, the following transactions occurred in connection with theKNOT's transfer of the interests in KNOT Shuttle Tankers AS and the subsequent IPO:

      Capital Contribution

      (i)
      KNOT contributed to the Partnership's subsidiary KNOT Offshore Partners UK LLC ("KNOT UK") its 100% interest in KNOT Shuttle Tankers AS, which directly or indirectly owned (1) Knutsen Shuttle Tankers XII KS, the owner of theRecife Knutsen and theFortaleza Knutsen, (2) Knutsen Shuttle Tankers XII AS, the general partner of Knutsen Shuttle Tankers XII KS, and (3) theWindsor Knutsen and theBodil Knutsen and all of their related charters, inventory and long-term debt. This was accounted for as a capital contribution by KNOT to the Partnership.

      (i)KNOT contributed to the Partnership’s subsidiary KNOT UK its 100% interest in KNOT Shuttle Tankers AS, which directly or indirectly owned (1) Knutsen Shuttle Tankers XII KS, the owner of theRecife Knutsen and theFortaleza Knutsen, (2) Knutsen Shuttle Tankers XII AS, the general partner of Knutsen Shuttle Tankers XII KS, and (3) theWindsor Knutsen and theBodil Knutsen and all of their related charters, inventory and long-term debt. This has been accounted for as a capital contribution by KNOT to the Partnership. However, for the purpose of the historical combined carve-out financial statements, the net assets of the Vessels are included in the combined carve-out balance sheet as of December 31, 2012.

      Recapitalization of the Partnership

      (ii)
      The Partnership issued to KNOT 8,567,500 subordinated units, representing a 49.0% limited partner interest in the Partnership, and 100% of the incentive distribution rights ("IDRs"), which entitle KNOT to increasing percentages of the cash the Partnership distributes in excess of $0.43125 per unit per quarter.

      (iii)
      The Partnership issued 349,694 general partner units to the General Partner representing a 2.0% general partner interest in the Partnership.

      (ii)The Partnership issued to KNOT 8,567,500 subordinated units, representing a 49.0% limited partner interest in the Partnership, and 100% of the IDRs, which will entitle KNOT to increasing percentages of the cash the Partnership distributes in excess of $0.43125 per unit per quarter.

      (iii)The Partnership issued 349,694 general partner units to the General Partner, KNOT Offshore Partners GP LLC, a wholly owned subsidiary of KNOT, representing a 2.0% general partner interest in the Partnership.

      Initial Public Offering

      (iv)
      In connection with the IPO, the Partnership issued and sold to the public, through the underwriters, 8,567,500 common units (including 1,117,500 common units sold pursuant to the full exercise of the underwriters' option to purchase additional units), representing a 49.0% limited partner interest in the Partnership. The price per common unit in the IPO was $21.00. The Partnership received gross proceeds of approximately $179.9 million in connection with the IPO. Expenses relating to the IPO, including, among other things, incremental costs directly attributable to the IPO, were deferred and charged against the gross proceeds of the IPO, whereas other costs were expensed as incurred. The net proceeds of the IPO (approximately $160.7 million, after deducting underwriting discounts, commissions and structuring fees and offering expenses payable by the Partnership) were used by the Partnership to make a cash distribution to KNOT of approximately $21.95 million (which equals net proceeds from the underwriters' option exercised in full after deducting the underwriting discounts and commissions), to repay approximately $118.9 million of outstanding debt and pre-fund approximately $3.0 million of the Partnership's one-time entrance tax into the Norwegian tonnage tax regime. The remainder of the net proceeds was made available for general partnership purposes.

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    (iv)

    In connection with the IPO, the Partnership issued and sold to the public, through the underwriters, 8,567,500 common units (including 1,117,500 common units sold pursuant to the full exercise of the underwriters’ option to purchase additional units), representing a 49.0% limited partner interest in the Partnership. The price per common unit in the IPO was $21.00. The Partnership received gross proceeds of approximately $179.9 million in connection with the IPO. Expenses relating to the IPO, including, among other things, incremental costs directly attributable to the IPO, were deferred and charged against the gross proceeds of the IPO, whereas other costs have been expensed as incurred. The net proceeds of the IPO (approximately $160.7 million, after deducting underwriting discounts, commissions and structuring fees and offering expenses payable by the Partnership) have been used by the Partnership to make a cash distribution to


    KNOT OFFSHORE PARTNERS LP

    KNOT of approximately $21.95 million (which equals net proceeds from the underwriters’ option exercised in full after deducting the underwriting discounts and commissions), to repay approximately $118.9 million of outstanding debt and pre-fund approximately $3.0 million of the Partnership’s one-time entrance tax into the Norwegian tonnage tax regime. The reminder of the net proceeds was made available for general partnership purposes.

    AgreementsNotes to Consolidated Financial Statements (Continued)

    3) Formation Transactions and Initial Public Offering (Continued)

      Agreements

    In connection with the IPO, at or prior to the closing of the IPO, the Partnership entered into several agreements, including:

      An Administrative Services Agreement with KNOT UK, pursuant to which:



    KNOT UK agreed to provide to the Partnership administrative services; and



    KNOT UK is permitted to subcontract certain of the administrative services provided under the administrative services agreement to Knutsen OAS (UK) Ltd. (“("KOAS UK”UK") and Knutsen OAS Shipping AS (“KOAS”("KOAS"), both wholly owned subsidiaries of TS Shipping Invest AS (“TSSI”("TSSI");



    Amended Technical Management Agreements with KNOT Management AS (“("KNOT Management”Management"), a wholly owned subsidiary of KNOT, that govern the crew, technical and commercial management of the vessels in the fleet;



    A Contribution and Sale Agreement with KNOT. See Note 2(a)—Summary of Significant Accounting Policies—Basis of Preparation;

    KNOT pursuant to which the Partnership acquired the entities that comprised its initial fleet;

    Amendments to certain of the Partnership’sPartnership's existing vessel financing agreements to permit the transactions pursuant to which the Partnership acquired its initial fleet in connection with the IPO and to include a $20.0 million revolving credit facility; and



    An Omnibus Agreement with KNOT, the General Partner and the other parties thereto governing, among other things:



    To what extent the Partnership and KNOT may compete with each other;

    The Partnership’s option to purchase theCarmen Knutsen within 24 months after the closing of the IPO, any of theHilda Knutsen, the Torill Knutsen, theIngrid Knutsen and the Raquel Knutsen from KNOT within 24 months after KNOT notifies the Partnership’s board of directors of their respective acceptances by their charterers upon reaching an agreement with KNOT regarding the respective purchase prices;



    The Partnership's option to purchase theCarmen Knutsen, theHilda Knutsen, theTorill Knutsen, theIngrid Knutsen and theRaquel Knutsen from KNOT;

    Certain rights of first offer on shuttle tankers operating under charters of five or more years;



    The provision of certain indemnities to the Partnership by KNOT; and

    KNOT's guarantee of the payment of the hire rate under the existingBodil Knutsen andWindsor Knutsen charters for a period of five years following the closing date of the IPO.

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    KNOT’s guarantee of the payment of the hire rate under the existingBodil Knutsen andWindsor Knutsen charters for a period of five years following the closing date of the IPO.


    KNOT OFFSHORE PARTNERS LP

    Notes to Consolidated Financial Statements (Continued)

      4) Subsidiaries

      The following table lists the Partnership’sPartnership's subsidiaries and their purpose as of December 31, 2015.2018.

      Company Name

      Jurisdiction of
      Formation

      Purpose

      KNOT Offshore Partners UK LLC Marshall Islands Holding companyCompany
      KNOT Shuttle Tankers AS Norway Holding companyCompany
      KNOT Shuttle Tankers 12 AS Norway Majority owner of Knutsen Shuttle Tankers XII KS
      KNOT Shuttle Tankers 17 AS Norway Owner of theBodil Knutsen
      KNOT Shuttle Tankers 18 AS Norway Owner of theWindsor Knutsen
      Knutsen Shuttle Tankers 13 ASNorwayOwner of theCarmen Knutsen
      Knutsen Shuttle Tankers XII KS Norway Owner of theFortaleza Knutsen and theRecife Knutsen
      Knutsen Shuttle Tankers XII AS Norway General partner of Knutsen Shuttle TankerTankers XII KS
      Knutsen Shuttle Tankers 13 ASNorwayOwner of theCarmen Knutsen
      Knutsen Shuttle Tankers 14 AS Norway Owner of theHilda Knutsen
      Knutsen Shuttle Tankers 15 AS Norway Owner of theTorill Knutsen
      KNOT Shuttle Tankers 20 AS Norway Owner of theDan Cisne
      KNOT Shuttle Tankers 21 AS Norway Owner of theDan Sabia
      Knutsen NYK Shuttle Tankers 16 AS Norway Owner of theIngrid Knutsen
      Knutsen Shuttle Tankers 19 ASNorwayOwner of theRaquel Knutsen
      KNOT Shuttle Tankers 24 ASNorwayOwner of theTordis Knutsen
      KNOT Shuttle Tankers 25 ASNorwayOwner of theVigdis Knutsen
      KNOT Shuttle Tankers 26 ASNorwayOwner of theLena Knutsen
      KNOT Shuttle Tankers 32 ASNorwayOwner of theBrasil Knutsen
      KNOT Shuttle Tankers 30 ASNorwayOwner of theAnna Knutsen

      5) Significant Risks and Uncertainties Including Business and Credit Concentrations

      Each of the Vessels is employed under long-term fixed rate charters, which mitigates earnings risk. The Partnership’sPartnership's operational results are dependent on the worldwide market for shuttle tankers and timing of entrance into long-term charters. Market conditions for shipping activities are typically volatile, and, as a consequence, the hire rates may vary from year to year. The market is mainly dependent upon two factors: the supply of vessels and the overall growth in the world economy. The general supply of vessels is impacted by the combination of newbuilds, demolition activity of older vessels and legislation that limits the use of older vessels or new standards for vessels used in specific trades.

      As of December 31, 2015,2018, all of the Partnership’sPartnership's Vessel crews, which are employed through Knutsen OAS Shipping AS,KOAS were represented by collective bargaining agreements that are renegotiated annually, or bi-annually.

      The Partnership did not incur any loss relating to its customers during the years ended December 31, 2015, 20142018, 2017 and 2013.2016.


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      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      5) Significant Risks and Uncertainties Including Business and Credit Concentrations (Continued)

      The following table presents time charter and bareboat revenues and percentage of combined revenues for customers that accounted for more than 10% of the Partnership’s combinedPartnership's revenues during the years ended December 31, 2015, 20142018, 2017 and 2013.2016. All of these customers are subsidiaries of major international oil companies, except KNOT, which was chartering theWindsor Knutsen from July 2014 until the vessel was redelivered to BG Group in October 2015.companies.

       
       Year Ended December 31, 
      (U.S. Dollars in thousands)
       2018 2017 2016 

      Eni Trading and Shipping S.p.A. 

       $43,955  16%$46,441  22%$47,001  27%

      Fronape International Company, a subsidiary of Petrobras Transporte S.A. 

        45,115  17% 45,115  21% 45,236  26%

      Equinor ASA

        23,426  8% 23,189  11% 21,760  13%

      Repsol Sinopec Brasil, B.V., a subsidiary of Repsol Sinopec Brasil, S.A. 

        36,978  13% 28,129  13% 20,904  12%

      Brazil Shipping I Limited, a subsidiary of Royal Dutch Shell

        81,816  29% 51,259  24% 20,496  12%

      Standard Marine Tønsberg AS, a Norwegian subsidiary of ExxonMobil

        16,872  6% 17,634  8% 17,482  10%

      Galp Sinopec Brasil Services BV

        30,029  11% 734  1%   0%

              

         Year Ended December 31, 

      (U.S. Dollars in thousands)

        2015  2014  2013 

      Fronape International Company, a subsidiary of Petrobras Transporte S.A.

        $40,618     26 $25,666     23 $22,860     31

      Eni Trading and Shipping S.p.A.

         46,806     30  23,512     21  —      —   

      Statoil ASA

         23,203     15  22,263     20  21,563     29

      Repsol Sinopec Brasil, S.A., a subsidiary of Repsol Sinopec Brasil, B.V.

         19,789     13  20,338     18  8,417     12

      Brazil Shipping I Limited, a subsidiary of BG Group Plc

         4,466     3  12,124     11 $20,311     28

      KNOT

        $16,231     11 $8,880     8  —      —   

      The Partnership has financial assets that expose it to credit risk arising from possible default by a counterparty. The Partnership considers its counterparties to be creditworthy banking and financial institutions and does not expect any significant loss to result from non-performance by such counterparties. The maximum loss due to credit risk that the Partnership would incur if counterparties failed completely to perform would be the carrying value of cash and cash equivalents, restricted cash and trade accounts receivable.derivative assets. The Partnership, in the normal course of business, does not demand collateral from its counterparties.

      6) Operating Leases

      The time charters and bareboat charters of the Vessels with third parties are accounted for as operating leases. The minimum contractual future revenues to be received from time charters and bareboat charters as of December 31, 2015,2018, were as follows:

      (U.S. Dollars in thousands)
        
       

      2019

       $274,754 

      2020

        240,849 

      2021

        219,841 

      2022

        152,078 

      2023

        63,918 

      2024 and therafter

        28,674 

      Total

       $980,114 

              

      (U.S. Dollars in thousands)    

      2016

        $166,669  

      2017

         167,148  

      2018

         124,753  

      2019

         80,004  

      2020

         80,745  

      2021 and thereafter

         209,634  
        

       

       

       

      Total

        $828,953  
        

       

       

       

      The minimum contractual future revenues should not be construed to reflect total charter hire revenues for any of the years. Minimum contractual future revenues are calculated based on certain assumptions such as operating days per year. In addition, minimum contractual future revenues


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      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      6) Operating Leases (Continued)

      presented in the table above have not been reduced by estimated off-hire time for periodic maintenance. The amounts may vary given unscheduled future events such as vessel maintenance.

      Partnership’s        The Partnership's fleet as of December 31, 20152018 consisted of:

        theFortaleza Knutsen, a shuttle tanker built in 2011 that is currently operating under a bareboat charter that expires in March 2023 with Fronape International Company, a subsidiary of Petrobras Transporte S.A. ("Transpetro");

        theRecife Knutsen, a shuttle tanker built in 2011 that is currently operating under a bareboat charter that expires in August 2023 with Transpetro;

        theBodil Knutsen, a shuttle tanker built in 2011 that is currently operating under a time charter that expires in May 2020 with Statoil ASA (now Equinor), with options to extend until May 2024;

        theWindsor Knutsen, a conventional oil tanker built in 2007 and retrofitted to a shuttle tanker in 2011. The vessel operated under a time charter with Brazil Shipping I Limited, a subsidiary of Shell, until July 2014. From July 2014 until October 2015, the vessel was employed under a time charter with KNOT. Beginning in October 2015, the vessel commenced operations under a two year time charter with Brazil Shipping I Limited, with options to extend until 2023. In March 2019, the time charter contract was suspend for a minimum of 10 months and a maximum of 12 months. During the suspension period, theWindsor Knutsenwill operate under a time charter contract Knutsen Shuttle Tankers Pool AS on the same terms as the existing contract with Shell. Shell has options to extend the time charter until October 2023;

        theCarmen Knutsen, a shuttle tanker built in 2013 that is currently operating under a time charter that expires in January 2023, with Repsol Sinopec Brasil, B.V. a subsidiary of Repsol Sinopec Brasil, S.A. ("Repsol"), with options to extend until January 2026;

        theHilda Knutsen, a shuttle tanker built in 2013 that is currently operating under a time charter that expires in August 2022 with Eni Trading and Shipping S.p.A. ("ENI"), with options to extend until August 2025;

        theTorill Knutsen, a shuttle tanker built in 2013 that is currently operating under a time charter that expires in November 2019 with ENI, with options to extend until November 2023;

        theDan Cisne, a shuttle tanker built in 2011 that is currently operating under a bareboat charter that expires in September 2023 with Transpetro;

        theDan Sabia, a shuttle tanker built in 2012 that is currently operating under a bareboat charter that expires in January 2024 with Transpetro;

        theIngrid Knutsen, a shuttle tanker built in 2013 that is currently operating under a time charter that expires in February 2024 with Standard Marine Tønsberg AS, a Norwegian subsidiary of ExxonMobil ("ExxonMobil"), with options to extend until February 2029;

        theRaquel Knutsen, a shuttle tanker built in 2015 that is currently operating under a time charter that expires in June 2025 with Repsol, with options to extend until June 2030;

      theFortaleza Knutsen, a shuttle tanker built in 2011 that is currently operating under a bareboat charter that expires in March 2023 with Fronape International Company, a subsidiary of Petrobras Transporte S.A. (“Transpetro”);
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      theRecife Knutsen, a shuttle tanker built in 2011 that is currently operating under a bareboat charter that expires in August 2023 with Fronape International Company;

      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      theBodil Knutsen, a shuttle tanker built in 2011 that is currently operating under a time charter that expires in May 2017 with Statoil ASA (“Statoil”), with options to extend until May 2019;

      6) Operating Leases (Continued)

      theWindsor Knutsen, a conventional oil tanker built in 2007 and retrofitted to a shuttle tanker in 2011. The vessel operated under a time charter with Brazil Shipping I Limited, a subsidiary of BG Group Plc, until July 2014. From July 2014 until October 2015, the vessel was employed under a time charter with KNOT. Beginning in October 2015, the vessel commenced operations under a two year time charter with Brazil Shipping I Limited, a subsidiary of BG Group Plc, with options to extend until 2023;
        theTordis Knutsen, a shuttle tanker built in 2016 that is currently operating under a time charter that expires in January 2022 with a subsidiary of Shell, with options to extend until January 2032;

        theVigdis Knutsen, a shuttle tanker built in 2017 that is currently operating under a time charter that expires in the second quarter of 2022 with a subsidiary of Shell, with options to extend until the second quarter of 2032;

        theLena Knutsen, a shuttle tanker built in 2017 that is currently operating under a time charter that expires in the third quarter of 2022 with a subsidiary of Shell, with options to extend until the third quarter of 2032;

        theBrasil Knutsen, a shuttle tanker built in 2013 that is currently operating under a time charter that expires in the third quarter of 2022 with Galp Sinopec Brazil Services B.V. ("Galp"), with options to extend until the third quarter of 2028; and

        TheAnna Knutsen, a shuttle tanker built in 2017 that is currently operating under a time charter that expires in the second quarter of 2022 with Galp, with options to extend until the second quarter of 2028.

      theCarmen Knutsen, a shuttle tanker built in 2013 that is currently operating under a time charter that expires in January 2023, with Repsol Sinopec Brasil, S.A, a subsidiary of Repsol Sinopec Brasil, B.V. (“Repsol”), with options to extend until January 2026;

      theHilda Knutsen, a shuttle tanker built in 2013 that is currently operating under a time charter that expires in August 2018 with Eni Trading and Shipping S.p.A. (“ENI”), with options to extend until August 2023;

      theTorill Knutsen, a shuttle tanker built in 2013 that is currently operating under a time charter that expires in November 2018 with ENI, with options to extend until November 2023;

      theDan Cisne, a shuttle tanker built in 2011 that is currently operating under a bareboat charter that expires in September 2023 with Fronape International Company;

      theDan Sabia, a shuttle tanker built in 2012 that is currently operating under a bareboat charter that expires in January 2024 with Fronape International Company; and

      theIngrid Knutsen, a shuttle tanker built in 2013 that is currently operating under a time charter that expires in February 2024 with Standard Marine Tønsberg, a subsidiary of ExxonMobil, with options to extend until February 2029.

      7) Segment Information

      The Partnership has not presented segment information as it considers its operations to occur in one reportable segment, the shuttle tanker market. At December 31, 2015,2018, the Partnership’sPartnership's fleet operated under sixtwelve time charters and four bareboat charters. At December 31, 2014,2017, the Partnership’sPartnership's fleet operated under fiveeleven time charters and threefour bareboat charters and during 2013at December 31, 2016, the Partnership’sPartnership's fleet operated under threeseven time charters and twofour bareboat charters. See Note 5—Significant Risks and Uncertainties Including Business and Credit Concentrations for revenues from customers accounting for over 10 %10% of the Partnership’sPartnership's consolidated and combined revenue. In both time charters and bareboat charters, the charterer, not the Partnership, controls the choice of which trading areas the Vessels will serve. Accordingly, the Partnership’sPartnership's management, including the chief operating decision makers, does not evaluate performance according to geographical region.

      8) Goodwill Impairment ChargeInsurance Proceeds

      DuringRaquel Knutsen

              In February 2017, the three months ended June 30, 2015, the Partnership concluded that indicators of impairment were present due to a significant reduction in the price of the Partnership’s common units during the quarter. Consequently, the Partnership performed an interim vessel and goodwill impairment analysis as of June 30, 2015 onRaquel Knutsendamaged its fleet, concluding that there was no impairment to the vessels’ values. However, the Partnership determined that the carrying value of the goodwill exceeded its fair value. The impairment charge relates mainly to capitalized goodwill which arose in 2008 when the Partnership’s predecessor acquired theWindsor Knutsen and three other vessels then under construction, in a transaction that was then accounted for as a step transaction.propeller hub. As a result, the Vessel was off-hire from February 22, 2017 to May 15, 2017 for repairs. Under the Partnership's loss of hire policies, its insurer will pay the Partnership the hire rate agreed in respect of each vessel for each day, in excess of 14 deductible days, for the time that the Vessel is out of service as a goodwill impairment chargeresult of $6.2damage, for a maximum of 180 days. For the year ended December 31, 2017, the Partnership received payments for loss of hire insurance of $3.4 million which was recognizedrecorded as a component of total revenues since day rates are recovered under terms of the policy.

              In addition, for the year ended December 31, 2015. The fair value was determined using2017, the present valuePartnership recorded $3.9 million for recoveries up to the amount of loss under hull and machinery insurance for the repairs as a result of the expected future cash flows discounted atpropeller hub damage to theRaquel Knutsen. This is classified under vessel operating expense along


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      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      8) Insurance Proceeds (Continued)

      with cost of the repairs of $4.2 million for the period, resulting in a rate equivalentnet expense of $0.3 million. See Note 19—Commitments and Contingencies.

      Carmen Knutsen

              During the fourth quarter of 2017, theCarmen Knutsenundertook her 5-year special drydocking survey. During dismantling for overhaul, a technical default with her controllable pitch propeller was found. As a result, the Vessel went to a market participant’s weighted averagedifferent yard to complete the repair. Repairs were completed and the Vessel was back on hire on January 1, 2018. The additional off-hire and technical costs were subject to an insurance claim. Under its loss of hire insurance policies, the Partnership's insurer is expected to pay the hire rate agreed in respect of theCarmen Knutsenfor each day in excess of 14 deductible days while the Vessel was off-hire as a result of the repairs of the controllable pitch propeller. For the years ended December 31, 2018 and 2017, the Partnership recorded $0.45 million and $1.75 million, respectively, for loss of hire which were recorded as a component of total revenues since day rates are recovered under the terms of the policy.

              For the year ended December 31, 2017, the Partnership recorded $2.40 million to vessel operating expense as an estimate of the cost of capital. The estimates and assumptions regarding expected future cash flows and appropriate discount rates are in part based upon existing contracts, future shuttle tanker rates, historical experience, financial forecasts and industry trends and conditions. This non-cash impairment charge, which does not affectrepairs of the Partnership’s operations, cash flows, liquidity, or anycontrollable pitch propeller. During 2018, an additional repair cost of its loan covenants, reduced the Partnership’s remaining goodwill balance$0.15 million was recorded to zero asvessel operating expenses. As of June 30, 2015 and December 31, 2015.2018, the Partnership has received payments and recorded $2.25 million for hull and machinery repairs, resulting in a net expense of $0.30 million. See Note 19—Commitments and Contingencies.

      9) Other Finance Expenses

      (a)
      Interest Expense

      A reconciliation        The following table presents the components of total interest cost to interest expense as reported in the consolidated and combined carve-out statements of operations for the years ended December 31, 2015, 20142018, 2017 and 2013 is as follows:2016:

         Year Ended December 31, 
      (U.S. Dollars in thousands)  2015   2014   2013 

      Interest cost capitalized

        $—       $—     $—   

      Interest expense

         17,451     15,271     10,773  
        

       

       

         

       

       

         

       

       

       

      Total interest cost

        $17,451    $15,271    $10,773  
        

       

       

         

       

       

         

       

       

       

       
       Year Ended December 31, 
      (U.S. Dollars in thousands)
       2018 2017 2016 

      Interest expense

       $46,768 $28,977 $19,669 

      Amortization of debt issuance cost and fair value of debt assumed

        3,188  1,737  1,198 

      Total interest cost

       $49,956 $30,714 $20,867 
      (b)
      Other Finance Expense

      The following table presents the components of other finance expense for the years ended December 31, 2015, 20142018, 2017 and 2013:2016:

       
       Year Ended December 31, 
      (U.S. Dollars in thousands)
       2018 2017 2016 

      Bank fees, charges

       $551 $516 $342 

      Guarantee costs

        403  621  696 

      Commitment fees

        306  269  273 

      Total other finance expense

       $1,260 $1,406 $1,311 

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      KNOT OFFSHORE PARTNERS LP

         Year Ended December 31, 
      (U.S. Dollars in thousands)  2015   2014   2013 

      Bank fees, charges and external guarantee costs

        $504    $1,221    $1,414  

      Related party guarantee commissions (Note 18)

         —      —      634  

      Related party financing service fee (Note 18)

         —      50     —   
        

       

       

         

       

       

         

       

       

       

      Total other finance expense

        $504    $1,271    $2,048  
        

       

       

         

       

       

         

       

       

       

      Notes to Consolidated Financial Statements (Continued)

      10) Derivative Instruments

      Interest Rate Risk Management

      The consolidated and combined carve-out financial statements include the results of interest rate swap contracts to manage the Partnership’sPartnership's exposure related to changes in interest rates on its variable rate debt instruments and the results of foreign exchange forward contracts to manage its exposure related to changes in currency exchange rates on its operating expenses, mainly crew expenses, in currency other currency than USDthe U.S. Dollar and on its contract obligations. The Partnership does not apply hedge accounting for derivative instruments. The Partnership does not speculate using derivative instruments.

      By using derivative financial instruments to economically hedge exposures to changes in interest rates, the Partnership exposes itself to credit risk and market risk. Derivative instruments that economically hedge exposures are used for risk management purposes, but these instruments are not designated as hedges for accounting purposes. Credit risk is the failure of the counterparty to perform under the terms of the derivative instrument. When the fair value of a derivative instrument is positive, the counterparty owes the Partnership, which creates credit risk for the Partnership. When the fair value of a derivative instrument is negative, the Partnership owes the counterparty, and, therefore, the Partnership is not exposed to the counterparty’scounterparty's credit risk in those circumstances. The Partnership minimizes counterparty credit risk in derivative instruments by entering into transactions with major banking and financial institutions. The derivative instruments entered into by the Partnership do not contain credit risk-related contingent features. The Partnership has not entered into master netting agreements with the counterparties to its derivative financial instrument contracts.

      Market risk is the adverse effect on the value of a derivative instrument that results from a change in interest rates, currency exchange rates or commodity prices. The market risk associated with interest rate contracts is managed by establishing and monitoring parameters that limit the types and degree of market risk that may be undertaken.

      The Partnership assesses interest rate risk by monitoring changes in interest rate exposures that may adversely impact expected future cash flows and by evaluating economical hedging opportunities.

      The Partnership has historically used variable interest rate mortgage debt to finance its vessel construction or conversions.vessels. The variable interest rate mortgage debt obligations expose the Partnership to variability in interest payments due to changes in interest rates. The Partnership believes that it is prudent to limit the variability of a portion of its interest payments. To meet this objective, the Partnership entered into London Interbank Offered Rate (“LIBOR”("LIBOR")-based based interest rate swap contracts to manage fluctuations in cash flows resulting from changes in the benchmark interest rate of LIBOR. These swaps change the variable rate cash flow exposure on the mortgage debt obligations to fixed cash flows. Under the terms of the interest rate swap contracts, the Partnership receives LIBOR-based variable interest rate payments and makes fixed interest rate payments, thereby creating the equivalent of fixed rate debt for the notional amount of its debt hedged.

      All interest rate swap contracts entered into in conjunction with the individual vessel financings prior to the closing date of the IPO have been carved out, as they were readily separable and identifiable within the books of KNOT. Additionally, all these interest rate swap contracts have been retained by KNOT and have not been transferred to the Partnership. Therefore, such interest rate swap contracts have been eliminated from the Partnership’s opening equity position as of April 16, 2013. See Consolidated and Combined Carve-Out Statements of Changes in Partners’ Capital/Owners’ Capital and Note 2(a)—Summary of Significant Accounting Policies—Basis of Preparation.

      As of December 31, 20152018 and 2014,2017, the total notional amount of the Partnership’sPartnership's outstanding interest rate swap contracts that were entered into in order to hedge outstanding or forecasted debt obligations were $410.0$555.5 million and $382.3$650.5 million, respectively. As of December 31, 20152018 and 20142017 the carrying amount of the interest rate swaps contracts were net liabilitiesassets of $3.6$15.9 million and $1.7$9.7 million, respectively. See Note 11—Fair Value Measurements.

      Changes in the fair value of interest rate swap contracts are reported in realized and unrealized gain (loss) on derivative instruments in the same period in which the related interest affects earnings.


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      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      10) Derivative Instruments (Continued)

      The Partnership and its subsidiaries utilize the U.S. Dollar as their functional and reporting currency, because all of their revenues and the majority of their expenditures, including the majority of their investments in vessels and their financing transactions, are denominated in U.S. Dollars. The Partnership’s predecessor also from time to time contracted vessels with contractual obligations to pay the yards in currencies other than the U.S. Dollar. Payment obligations in currencies other than the U.S. Dollar, and in particular operating expenses in NOK, expose the Partnership to variability in currency exchange rates. The Partnership believes that it is prudent to limit the variability of a portion of its currency exchange exposure. To meet this objective, the Partnership entered into foreign exchange forward contracts to manage fluctuations in cash flows resulting from changes in the exchange rates towards the U.S. Dollar. The agreements change the variable exchange rate to fixed exchange rates at agreed dates.

      As of December 31, 20152018 and 2014,2017, the total contract amount in foreign currency of the Partnership’sPartnership's outstanding foreign exchange forward contracts that were entered into to economically hedge outstanding future payments in currencies other than the U.S. Dollar were NOK 289.8244.2 million and NOK 127.9249.9 million, respectively. As of December 31, 20152018 and 2014,2017, the carrying amount of the Partnership’sPartnership's foreign exchange forward contracts was a net liability of $2.1$1.7 million and $2.7a net assets of $0.6 million, respectively. See Note 11—Fair Value Measurements.

      The following table presents the realized and unrealized gains and losses that are recognized in earnings as net gain (loss) on derivative instruments for the years ended December 31, 2015, 20142018, 2017 and 2013:2016:

       
       Year Ended December 31, 
      (U.S. Dollars in thousands)
       2018 2017 2016 

      Realized gain (loss):

                

      Interest rate swap contracts

       $1,180 $(2,840)$(3,886)

      Foreign exchange forward contracts

        1,084  280  66 

      Total realized gain (loss):

        2,264  (2,560) (3,820)

      Unrealized gain (loss):

                

      Interest rate swap contracts

        4,429  5,514  4,254 

      Foreign exchange forward contracts

        (2,654) 1,877  779 

      Total unrealized gain (loss):

        1,775  7,391  5,033 

      Total realized and unrealized gain (loss) on derivative instruments:

       $4,039 $4,831 $1,213 

         Year Ended December 31 
      (U.S. Dollars in thousands)  2015   2014   2013 

      Realized gain (loss)

            

      Interest rate swap contracts

        $(4,957  $(2,997  $(1,265

      Foreign exchange forward contracts

         (4,348   500     —   

      Unrealized gain (loss)

            

      Interest rate swap contracts

         (1,088   (919   1,522  

      Foreign exchange forward contracts

         698     (2,991   248  
        

       

       

         

       

       

         

       

       

       

      Total

        $(9,695  $(6,407  $505  
        

       

       

         

       

       

         

       

       

       

      11) Fair Value Measurements

      (a)
      Fair Value of Financial Instruments

      The following table presents the carrying amounts and estimated fair values of the Partnership’sPartnership's financial instruments as of December 31, 20152018 and 2014.2017. Fair value is defined as the amount that


      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      11) Fair Value Measurements (Continued)

      would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.

       
       December 31, 2018 December 31, 2017 
      (U.S. Dollars in thousands)
       Carrying
      Amount
       Fair
      Value
       Carrying
      Amount
       Fair
      Value
       

      Financial assets:

                   

      Cash and cash equivalents

       $41,712 $41,712 $46,104 $46,104 

      Current derivative assets:

                   

      Interest rate swap contracts

        4,621  4,621  950  950 

      Foreign exchange forward contracts

            629  629 

      Non-current derivative assets:

                   

      Interest rate swap contracts

        11,667  11,667  9,850  9,850 

      Financial liabilities:

                   

      Current derivative liabilities:

                   

      Interest rate swap contracts

            961  961 

      Foreign exchange forward contracts

        1,740  1,740  17  17 

      Non-current derivative liabilities:

                   

      Interest rate swap contracts

        345  345  164  164 

      Long-term debt, current and non-current

        1,087,347  1,087,347  1,033,330  1,032,484 

              

         December 31, 2015   December 31, 2014 
      (U.S. Dollars in thousands)  Carrying
      Amount
         Fair Value   Carrying
      Amount
         Fair Value 

      Financial assets:

              

      Cash and cash equivalents

        $23,573    $23,573    $30,746    $30,746  

      Non-current derivative assets:

              

      Interest rate swap contracts

         695     695     2,966     2,966  

         December 31, 2015   December 31, 2014 
      (U.S. Dollars in thousands)  Carrying
      Amount
         Fair Value   Carrying
      Amount
         Fair Value 

      Financial liabilities:

              

      Current derivative liabilities:

              

      Interest rate swap contracts

         3,799     3,799     4,708     4,708  

      Foreign exchange forward contract

         1,339     1,339     2,742     2,742  

      Non-current derivative liabilities:

              

      Interest rate swap contracts

         527     527     —       —    

      Foreign exchange forward contract

         705     705     —       —    

      Long-term debt, current and non-current

         671,690     671,690     613,221     613,221  

      The carrying amounts shown in the table above are included in the consolidated and combined carve-out balance sheets under the indicated captions. Carrying amount of long-term debt, current and non-current, above excludes capitalized debt issuance cost of $10.1 million and $6.7 million as of December 31, 2018 and 2017, respectively. The carrying value of trade accounts receivable, trade accounts payable and receivables/payables to owners and affiliates approximate their fair value.

      The fair values of the financial instruments shown in the above table as of December 31, 20152018 and 20142017 represent the amounts that would be received to sell those assets or that would be paid to transfer those liabilities in an orderly transaction between market participants at that date. Those fair value measurements maximize the use of observable inputs. However, in situations where there is little, if any, market activity for the asset or liability at the measurement date, the fair value measurement reflects the Partnership’sPartnership's own judgment about the assumptions that market participants would use in pricing the asset or liability. Those judgments are developed by the Partnership based on the best information available in the circumstances, including expected cash flows, appropriately risk-adjusted discount rates and available observable and unobservable inputs.

      The following methods and assumptions were used to estimate the fair value of each class of financial instruments:

        Cash and cash equivalents and restricted cash:  The fair value of the Partnership's cash balances approximates the carrying amounts due to the current nature of the amounts. As of December 31, 2018 and 2017 there is no restricted cash.

        Foreign exchange forward contracts:  The fair value is calculated using mid-rates (excluding margins) as determined by counterparties based on available market rates as of the balance sheet date. The fair value is discounted from the value at expiration to the current value of the contracts.

      Table of Contents

      Cash and cash equivalents and restricted cash: The fair value of the Partnership’s cash balances approximates the carrying amounts due to the current nature of the amounts.


      KNOT OFFSHORE PARTNERS LP

      Foreign exchange forward contracts:The fair value is calculated using mid-rates (excluding margins) as determined by counterparties based on available market rates as of the balance sheet date. The fair value is discounted from the value at expiration to the current value of the contracts.

      Notes to Consolidated Financial Statements (Continued)

      Interest rate swap contracts: The fair value of interest rate swap contracts is determined using an income approach using the following significant inputs: (1) the term of the swap contract (weighted average of 4.2 years and 4.5 years, respectively), (2) the notional amount of the swap contract (ranging from $13,861 to $50,000), discount rates interpolated based on relevant LIBOR swap curves; and (3) the rate on the fixed leg of the swap contract (rates ranging from 1.25% to 2.42% for the contracts as of December 31, 2015 and as of December 31, 2014).

      11) Fair Value Measurements (Continued)

      Long-term debt: With respect to long-term debt measurements, the Partnership uses market interest rates and adjusts that rate for all necessary risks, including its own credit risk. In determining an appropriate spread to reflect its credit standing, the Partnership considered interest rates currently offered to the KNOT Group for similar debt instruments of comparable maturities by KNOT’s and the Partnership’s bankers as well as other banks that regularly compete to provide financing to the Partnership. As all long-term debt has been recently refinanced, the fair value is based on the margin obtained in the refinancing and therefore the fair value equals the carrying value as of December 31, 2015.

        Interest rate swap contracts:  The fair value of interest rate swap contracts is determined using an income approach using the following significant inputs: (1) the term of the swap contract (weighted average of 4.9 years and 4.5 years, as of December 31, 2018 and 2017, respectively), (2) the notional amount of the swap contract (ranging from $10,037 to $50,000), discount rates interpolated based on relevant LIBOR swap curves; and (3) the rate on the fixed leg of the swap contract (rates ranging from 1.38% to 2.89% for the contracts as of December 31, 2018 and rates ranging from 1.25% to 2.49% for the contracts as of December 31, 2017).

        Long-term debt:  With respect to long-term debt measurements, the Partnership uses market interest rates and adjusts for risks such as its own credit risk. In determining an appropriate spread to reflect its credit standing, the Partnership considered interest rates currently offered to KNOT for similar debt instruments of comparable maturities by KNOT's and the Partnership's bankers as well as other banks that regularly compete to provide financing to the Partnership.

      (b)
      Fair Value Hierarchy

      The following table presents the placement in the fair value hierarchy of assets and liabilities that are measured at fair value on a recurring basis (including items that are required to be measured at fair value or for which fair value is required to be disclosed) as of December 31, 20152018 and 2014:2017:

       
        
       Fair Value Measurements
      at Reporting Date Using
       
      (U.S. Dollars in thousands)
       Carrying
      Value
      December 31,
      2018
       Quoted Price
      in Active
      Markets for
      Identical
      Assets
      (Level 1)
       Significant
      Other
      Observable
      Inputs
      (Level 2)
       Significant
      Unobservable
      Inputs
      (Level 3)
       

      Financial assets:

                   

      Cash and cash equivalents

       $41,712 $41,712 $ $ 

      Current derivative assets:

                   

      Interest rate swap contracts

        4,621    4,621   

      Foreign exchange forward contracts

               

      Non-current derivative assets:

                   

      Interest rate swap contracts

        11,667    11,667   

      Foreign exchange forward contracts

               

      Financial liabilities:

                   

      Current derivative liabilities:

                   

      Interest rate swap contracts

               

      Foreign exchange forward contracts

        1,740    1,740   

      Non-current derivative liabilities:

                   

      Interest rate swap contracts

        345    345   

      Foreign exchange forward contracts

               

      Long-term debt, current and non-current

        1,087,347    1,087,347   

      Table of Contents

             Fair Value Measurements at
      Reporting Date Using
       
      (U.S. Dollars in thousands)  December 31,
      2015
         Quoted Price
      in Active
      Markets for
      Identical
      Assets
      (Level 1)
         Significant
      Other
      Observable
      Inputs
      (Level 2)
         Significant
      Unobservable
      Inputs
      (Level 3)
       

      Financial assets:

              

      Cash and cash equivalents

        $23,573    $23,573    $—     $ —   

      Non-current derivative assets:

              

      Interest rate swap contracts

         695     —      695     —   

      Financial liabilities:

              

      Current derivative liabilities:

              

      Interest rate swap contracts

         3,799     —      3,799     —   

      Foreign exchange forward contracts

         1,339     —      1,339     —   

      Non-current derivative liabilities:

              

      Interest rate swap contracts

         527       527    

      Foreign exchange forward contract

         705       705    

      Long-term debt, current and non-current

         671,690     —      671,690     —   
             Fair Value Measurements at
      Reporting Date Using
       
      (U.S. Dollars in thousands)  December 31,
      2014
         Quoted Price
      in Active
      Markets for
      Identical
      Assets
      (Level 1)
         Significant
      Other
      Observable
      Inputs
      (Level 2)
         Significant
      Unobservable
      Inputs
      (Level 3)
       

      Financial assets:

              

      Cash and cash equivalents

        $30,746    $30,746    $—     $ —   

      Restricted cash

         —      —      —      —   

      Current derivative asset:

              

      Foreign exchange forward contracts

         —      —      —      —   

      Non-current derivative assets:

              

      Interest rate swap contracts

         2,966     —      2,966     —   

      Financial liabilities:

              

      Current derivative liabilities:

              

      Interest rate swap contracts

         4,708     —      4,708     —   

      Foreign exchange forward contracts

         2,742     —      2,742     —   

      Non-current derivative liabilities:

              

      Interest rate swap contracts

         —      —      —      —   

      Foreign exchange forward contracts

         —      —      —      —   

      Long-term debt, current and non-current

         613,221     —      613,221     —   

      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      11) Fair Value Measurements (Continued)


       
        
       Fair Value Measurements
      at Reporting Date Using
       
      (U.S. Dollars in thousands)
       Carrying
      Value
      December 31,
      2017
       Quoted Price
      in Active
      Markets for
      Identical
      Assets
      (Level 1)
       Significant
      Other
      Observable
      Inputs
      (Level 2)
       Significant
      Unobservable
      Inputs
      (Level 3)
       

      Financial assets:

                   

      Cash and cash equivalents

       $46,104 $46,104 $ $ 

      Current derivative assets:

                   

      Interest rate swap contracts

        950    950   

      Foreign exchange forward contracts

        629    629   

      Non-current derivative assets:

                   

      Interest rate swap contracts

        9,850    9,850   

      Foreign exchange forward contracts

               

      Financial liabilities:

                   

      Current derivative liabilities:

                   

      Interest rate swap contracts

        961    961   

      Foreign exchange forward contracts

        17    17   

      Non-current derivative liabilities:

                   

      Interest rate swap contracts

        164    164   

      Foreign exchange forward contracts

               

      Long-term debt, current and non-current

        1,033,330    1,032,484   

      The Partnership’sPartnership's accounting policy is to recognize transfers between levels of the fair value hierarchy on the date of the event or change in circumstances that caused the transfer. There were no transfers into or out of Level 1, Level 2 or Level 3 as of December 31, 20152018 and 2014.2017.

      12) Trade Accounts Receivables and Other Current Assets

      (a)
      Trade Accounts Receivables

      Trade accounts receivable are presented net of provisions for doubtful accounts. As of December 31, 20152018 and 2014,2017, there was no provision for doubtful accounts.

      (b)
      Other Current Assets

      Other current assets consist of the following:

       
       Year Ended
      December 31,
       
      (U.S. Dollars in thousands)
       2018 2017 

      Insurance claims for recoveries

       $ $1,750 

      Refund of value added tax

        899  865 

      Prepaid expenses

        810  1,997 

      Other receivables

        753  998 

      Total other current assets

       $2,462 $5,610 

         Year Ended December 31, 
      (U.S. Dollars in thousands)  2015   2014 

      Insurance claims for recoveries

         —       189  

      Refund of value added tax

         596     453  

      Prepaid expenses

         707     464  

      Current portion of deferred debt issuance cost

         1,149     1,149  

      Other receivable

         497     1,703  
        

       

       

         

       

       

       

      Total other current assets

        $2,949    $3,958  
        

       

       

         

       

       

       
      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      13) Vessels and Equipment

              

      (U.S. Dollars in thousands)  Vessel &
      equipment
         Accumulated
      depreciation
         Net vessels 

      Balance December 31, 2013

        $692,926    $(75,141  $617,785  

      Additions

         434,232     —      434,232  

      Drydock costs

         4,277     —      4,277  

      Transfer from vessels under construction

         —      —      —   

      Disposals

         (114   —      (114

      Depreciation

         —      (34,322   (34,322
        

       

       

         

       

       

         

       

       

       

      Balance December 31, 2014

        $1,131,321    $(109,464  $1,021,857  
        

       

       

         

       

       

         

       

       

       

      Additions

         218,540     —      218,540  

      Drydock costs

         1,625     —      1,625  

      Transfer from vessels under construction

         —      —      —   

      Disposal

         (267)   16    (251)

      Depreciation

         —      (48,844   (48,844
        

       

       

         

       

       

         

       

       

       

      Balance December 31, 2015

        $1,351,219    $(158,292  $1,192,927  
        

       

       

         

       

       

         

       

       

       

      As of December 31, 20152018 and 2014,2017, Vessels with a book value of $1,193$1,767 million and $1,022$1,723 million, respectively, are pledged as security held as a guarantee for the Partnership’sPartnership's long-term debt. See Note 16—Long-Term Debt.

      (U.S. Dollars in thousands)
       Vessels &
      equipment
       Accumulated
      depreciation
       Net
      Vessels
       

      Vessels, December 31, 2016

       $1,468,913 $(212,024)$1,256,889 

      Additions

        522,369    522,369 

      Drydock costs

        15,348    15,348 

      Disposals

        (3,289) 3,289   

      Depreciation for the year

          (71,583) (71,583)

      Vessels, December 31, 2017

       $2,003,341 $(280,318)$1,723,023 

      Additions

        118,063    118,063 

      Drydock costs

        14,750    14,750 

      Disposals

        (5,731) 5,731   

      Depreciation for the period

          (88,756) (88,756)

      Vessels, December 31, 2018

       $2,130,423 $(363,343)$1,767,080 

      Drydocking activity for the years ended December 31, 20152018 and 20142017 is summarized as follows:

       
       Year Ended
      December 31,
       
      (U.S. Dollars in thousands)
       2018 2017 

      Balance at the beginning of the year

       $17,748 $6,962 

      Costs incurred for dry docking

        12,421  6,885 

      Costs allocated to drydocking as part of acquisition of business

        2,329  8,463 

      Drydock amortization

        (6,930) (4,562)

      Balance at the end of the year

       $25,568 $17,748 

         Year Ended
      December 31,
       
      (U.S. Dollars in thousands)  2015   2014 

      Balance at the beginning of the year

        $5,874    $3,369  

      Costs incurred for drydocking

         362     69  

      Costs allocated to drydocking as part of acquisition of business

         1,263     4,208  

      Drydock depreciation

         (2,232   (1,772
        

       

       

         

       

       

       

      Balance at the end of the year

        $5,267    $5,874  
        

       

       

         

       

       

       

      14) Intangible Assets and Contract Liabilities

      (a)
      Intangible Assets
      (U.S. Dollars in thousands)
       Above market
      time charter
      Tordis Knutsen
       Above market
      time charter
      Vigdis Knutsen
       Total
      intangibles
       

      Intangibles, December 31, 2016

       $ $ $ 

      Additions

        1,468  1,458  2,926 

      Amortization for the year

        (253) (176) (429)

      Intangibles, December 31, 2017

       $1,215 $1,282 $2,497 

      Additions

             

      Amortization for the year

        (304) (302) (606)

      Intangibles, December 31, 2018

       $911 $980 $1,891 

      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      14) Intangible Assets and Contract Liabilities (Continued)

      The Partnership’s identified finite-livedintangible for the above market value of time charter contract associated with theTordis Knutsen is amortized to time charter revenue on a straight line basis over the remaining term of the contract of approximately 4.8 years as of the acquisition date. The intangible for the above market value of time charter contract associated with theVigdis Knutsen is amortized to time charter revenue on a straight line basis over the remaining term of the contract of approximately 4.9 years as of the acquisition date. Also see Note 21—Acquisitions.

              The estimated future amortization of intangible assets associated withat December 31, 2018 is as follows:

      (U.S. Dollars in thousands)
        
       

      2019

        606 

      2020

        606 

      2021

        605 

      2022

        74 

      Total

       $1,891 
      (b)
      Contract Liabilities

              The unfavorable contractual rights for a charter of a Vesselcharters associated withFortaleza Knutsen andRecife Knutsen were obtained in connection with a step acquisition in 2008 that had favorableunfavorable contractual terms relative to market as of the acquisition date. The finite-lived intangible assets of $533 were fully amortized as of December 31, 2010. In addition, as part of that transaction, unfavorable contractual rights forFortaleza Knutsen and theRecife Knutsen commenced on their 12 years' fixed bareboat charters of two of the Vessels that had unfavorable contractual terms were identified.in March 2011 and August 2011, respectively. The unfavorable contract rights related toFortaleza Knutsen andRecife Knutsenare amortized to bareboat revenues on a straight line basis over the 12 years' contract period of the contract to time charterthat expires in March 2023 and bareboat revenues as follows:August 2023, respectively.

      (U.S. Dollars in thousands)
       Balance of
      December 31,
      2016
       Amortization
      for the
      year ended
      December 31,
      2017
       Balance of
      December 31,
      2017
       Amortization
      for the
      year ended
      December 31,
      2018
       Balance of
      December 31,
      2018
       

      Contract liabilities:

                      

      Unfavorable contract rights

       $(9,757)$1,518 $(8,239)$1,518 $(6,721)

      Total amortization income

          $1,518    $1,518    

              

      (U.S. Dollars in thousands)  Balance as of
      December 31,
      2013
        Amortization
      for the year
      ended
      December 31,
      2014
         Balance as of
      December 31,
      2014
        Amortization
      for the year
      ended
      December 31,
      2015
         Balance as of
      December 31,
      2015
       

      Contract liabilities:

              

      Unfavorable contract rights

        $(14,311 $1,518    $(12,793 $1,518    $(11,275
         

       

       

          

       

       

         

      Total amortization income

         $1,518     $1,518    
         

       

       

          

       

       

         

      Accumulated amortization for contract liabilities was $6,940$11,494 and $5,422$9,976 as of December 31, 20152018 and 2014,2017, respectively.

      The amortization of contract liabilities that is classified under time charter and bareboat revenues for the next five years is expected to be as follows:

      (U.S. Dollars in thousands)
       2019 2020 2021 2022 2023 and
      thereafter
       

      Contract liabilities:

                      

      Unfavorable contract rights

       $(1,518)$(1,518)$(1,518)$(1,518)$(649)

      Table of Contents

      (U.S. Dollars in thousands)  2016  2017  2018  2019  2020 and
      thereafter
       

      Contract liabilities:

            

      Unfavorable contract rights

        $(1,518 $(1,518 $(1,518 $(1,518 $(5,203
         

       

       

         

       

       

        


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      15) Accrued Expenses

      The following table presents accrued expenses as of December 31, 20152018 and 2014:2017:

       
       Year Ended
      December 31,
       
      (U.S. Dollars in thousands)
       2018 2017 

      Operating expenses

       $832 $979 

      Interest expenses

        4,968  3,394 

      Guarantee costs

          54 

      Other expenses

        664  2,077 

      Total accrued expenses

       $6,464 $6,504 

         Year Ended December 31, 
      (U.S. Dollars in thousands)  2015   2014 

      Operating expenses

        $1,364    $1,035  

      Interest expenses

         2,130     1,700  

      Other expenses

         394     —   
        

       

       

         

       

       

       

      Total accrued expenses

        $3,888    $2,735  
        

       

       

         

       

       

       

      16) Long-Term Debt

      Prior to the closing        Long-term debt as of December 31, 2018 and 2017, consisted of the IPO, existing vessel financingfollowing:

      (U.S. Dollars in thousands)
       Vessel December 31,
      2018
       December 31,
      2017
       

      $320 million loan facility               

       Windsor Knutsen, Bodil Knutsen, Carmen Knutsen, Fortaleza Knutsen, Recife Knutsen, Ingrid Knutsen  312,472   

      $55 million revolving credit facility

          26,279   

      $220 million loan facility               

       Windsor Knutsen, Bodil Knutsen, Carmen Knutsen $ $165,000 

      Fortaleza and Recife loan facility

       Fortaleza Knutsen, Recife Knutsen    109,375 

      Ingrid loan facility

       Ingrid Knutsen    61,085 

      Hilda loan facility

       Hilda Knutsen  90,769  96,923 

      $117 million loan facility

       Torill Knutsen    73,177 

      Torill loan facility

       Torill Knutsen  95,000   

      $172.5 million loan facility

       Dan Cisne, Dan Sabia  81,839  91,339 

      Raquel loan facility

       Raquel Knutsen  63,184  68,414 

      Tordis loan facility

       Tordis Knutsen  85,991  91,051 

      Vigdis loan facility

       Vigdis Knutsen  87,256  92,316 

      Lena loan facility

       Lena Knutsen  85,750  90,650 

      Brasil loan facility

       Brasil Knutsen  63,454  69,000 

      Anna loan facility

       Anna Knutsen  70,353   

      $25 million revolving credit facility

          25,000  25,000 

      Total long-term debt

          1,087,347  1,033,330 

      Less: current installments

          109,534  95,176 

      Less: unamortized deferred loan issuance costs

          2,608  2,191 

      Current portion of long-term debt

          106,926  92,985 

      Amounts due after one year

          977,813  938,154 

      Less: unamortized deferred loan issuance costs

          7,448  4,524 

      Long-term debt, less current installments, and unamortized deferred loan issuance costs

         $970,365 $933,630 

      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      16) Long-Term Debt (Continued)

              The Partnership's outstanding debt of $1,087.3 million as of December 31, 2018 is repayable as follows:

      (U.S. Dollars in thousands)
       Period repayment Balloon repayment 

      2019

        84,534  25,000 

      2020

        85,945   

      2021

        86,545  70,811 

      2022

        71,210  236,509 

      2023

        55,535  202,185 

      2024 and thereafter

        15,180  153,893 

      Total

       $398,949 $688,398 

              As of December 31, 2018, the interest rates on the Partnership's loan agreements were amendedLIBOR plus a fixed margin ranging from 1.8% to permit2.4%.

      $320 Million Term Loan Facility and $55 Million Revolving Credit Facility

              In September 2018, the transactions pursuant toPartnership's subsidiaries which own the Partnership acquired its initial fleet at the closing of the IPO and to establish a $20.0 million revolving credit facility.

      The Partnership used the net proceeds from the IPO to repay either a portion of the amounts outstanding or the full amount outstanding under the existing loan facilities. All amended loan agreements have been assessed for debt extinguishment or debt modifications in accordance with Accounting Standards Codification (ASC) 470,DebtWindsor Knutsen. Debt that has been fully repaid has been accounted for as debt extinguishment, i.e., for all extinguishments of debt, the difference betweenBodil Knutsen, the reacquisition price (which includes any premium)Fortaleza Knutsen, theRecife Knutsen, theCarmen Knutsen and the net carrying amount of Ingrid Knutsen ("the debt being extinguished (which includes any deferred debt issuance costs) has been recognized as a gain or loss when the debt was extinguished.

      In June 2014, the PartnershipVessels"), entered into two new senior secured credit facilities (the "Multi-vessels Facility") in order to refinance itstheir existing long term bank debt. The new senior secured credit facilities consistMulti-vessels Facility consists of a $20term loan of $320 million and a $55 million revolving credit facility. The term loan is repayable in 20 consecutive quarterly installments, with a final payment at maturity in September 2023 of $177 million, which includes the balloon payment and last quarterly installment. The term loan bears interest at a rate per annum equal to LIBOR plus a margin of 2.125%. The revolving credit facility will mature in September 2023, and bears interest at LIBOR plus a margin of 2.125%. There is a commitment fee of 0.85% payable on the undrawn portion of the revolving credit facility. The loans are guaranteed by the Partnership and secured by mortgages on the Vessels. The Multi-vessels Facility refinanced the $220 million facility, the $35 million revolving credit facility, the Fortaleza and two term loans of $220 million and $140 million. The $220 million term loan and the $20 million revolving facility were drawn in June 2014 to repay existing debt under a $120 million loan facility, a $85 millionRecife loan facility and a $93 millionthe Ingrid loan facilityfacility.

              The Vessels, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the Multi-vessel facility. The Partnership and the borrowers (except for the Partnership subsidiary that owns theRecife Knutsen and theFortaleza Knutsen) are guarantors, and the Multi-vessels Facility is secured by vessel mortgages on theWindsor Knutsen, theBodil Knutsen, theWindsorFortaleza Knutsen and, theRecife Knutsen, theCarmen Knutsen, respectively, and a seller’s credit from KNOT.theIngrid Knutsen.

              The new $140 million term loan was drawn in November 2014 and replacedMulti-vessels Facility contains the $160 million loan facility secured by theFortaleza Knutsen and theRecife Knutsen. following financial covenants:

        The repaymentsaggregate market value of the loan facilitiesVessels shall not be less than 125% of the outstanding balance under the Multi-vessels Facility;

        Positive working capital of the borrowers and the Partnership;

        Minimum liquidity of the Partnership of $15 million plus increments of $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract up to 8 vessels and $1 million for each owned vessel with less than 12 months remaining tenor on its employment contract up to 12 additional vessels in 2014 have been assessed for debt extinguishment or debt modifications in accordance with Accounting Standards Codification (ASC) 470,excess of 8 vessels;

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      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      16) Long-Term Debt. These repayments were accounted for as debt extinguishment and $1.8 million has been written off from deferred financing fees and expenses under interest expense (Continued)

        Minimum book equity ratio for the year ended December 31, 2014.

        Long-term debt asPartnership of December 31, 201530%; and 2014, consisted

        Minimum EBITDA to interest ratio for the Partnership of following:

        2.50.

              

            As of December 31, 
      (U.S. Dollars in thousands)  

      Vessel

        2015   2014 

      $220 million loan facility

        

      Windsor Knutsen, Bodil Knutsen,

      Carmen Knutsen

        $196,429    $212,142  

      $20 million revolving credit facility

        

      Windsor Knutsen, Bodil Knutsen,

      Carmen Knutsen

         —      20,000  

      $140 million loan facility

        Fortaleza Knutsen & Recife Knutsen   126,875     135,625  

      $117 million loan facility

        Hilda Knutsen   81,797     86,724  

      $117 million loan facility

        Torill Knutsen   83,033     87,960  

      $172.5 million loan facility

        Dan Cisne & Dan Sabia   109,339     58,770  

      $77.5 million loan facility

        Ingrid Knutsen   74,217     —   

      $12.0 million Seller’s Credit

           —      12,000  
          

       

       

         

       

       

       

      Total long-term debt

           671,690     613,221  
          

       

       

         

       

       

       

      Less current installments

           49,684     38,718  

      Less $12.0 million Seller’s Credit

           —      12,000  
          

       

       

         

       

       

       

      Long-term debt, excluding current installments and seller’s credit

          $622,006    $562,503  
          

       

       

         

       

       

       

      The Partnership’s outstanding debtMulti-vessels Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of $671.7 million asthe facility, including total loss or sale of December 31, 2015 is repayable as follows:

      Year Ending December 31,

        U.S. Dollars in
      thousands
       

      2016

        $49,684  

      2017

         50,084  

      2018

         203,422  

      2019

         266,260  

      2020

         17,650  

      2021- thereafter

         84,590  
        

       

       

       

      Total

        $671,690  
        

       

       

       

      a vessel and customary events of default. As of December 31, 2015,2018, the interest rates onborrowers and the Partnership’s loan agreements (other than tranche two ofguarantors were in compliance with all covenants under this facility.

      $220 Million Term Loan Facility and $35 Million Revolving Credit Facility

              The $220 million Term Loan Facility and the $77.5$35 million loan facility)Revolving Credit Facility were repaid in full in September 2018 with the London Interbank Offered Rate (“LIBOR”) plus a fixed margin rangingproceeds from 2.125% to 2.5%. On the export credit loan of $55.1 million which is tranche two of the $77.5 million loan facility secured by theIngrid Knutsen, the annual rate is 3.85% composed of a 2.5% bank facility rate plus a commission of 1.35% to the export credit guarantor. The guarantee commission of 1.35% is classified as other finance expense. See Note 2(e)—Financial Income (Expense).Multi-vessels Facility.

      $240 Million Secured Loan Facility

      In June 2014, the Partnership’sPartnership's subsidiaries KNOT Shuttle Tankers 18 AS, KNOT Shuttle Tankers 17 AS and Knutsen Shuttle Tankers 13 AS entered into a senior syndicate secured loan facility in an aggregate amount of $240 million (the “Senior"Senior Secured Loan Facility”Facility") to repay existing debt under previous credit facilities and a $10.5 million seller’sseller's credit from KNOT. The Senior Secured Loan Facility consistsconsisted of (i) a $220 million term loan (the “Term"Term Loan Facility”Facility") and (ii) a $20 million revolving credit facility (the “Revolving"Revolving Credit Facility”Facility").

      The Revolving Credit Facility terminates in June 2019, and bears interest at LIBOR plus a fixed margin of 2.125%, and has a commitment fee equal to 40% of the margin of the Revolving Credit Facility calculated on the daily undrawn portion of the Revolving Credit Facility. The outstanding balance on the Revolving Credit Facility was repaid on June 23, 2015 using a portion of the net proceeds from the June 2015 Offering. As of December 31, 2015, the Revolving Credit Facility was undrawn.

      The Term Loan Facility iswas repayable in quarterly instalmentsinstallments over five years with a final balloon payment due at maturity at June 2019. The Term Loan Facility bearsbore interest at LIBOR plus a margin of 2.125%.

              On June 30, 2016, the Partnership's subsidiaries KNOT Shuttle Tankers 18 AS, KNOT Shuttle Tankers 17 AS and Knutsen Shuttle Tankers 13 AS, as borrowers, entered into an amended and restated senior secured credit facility (the "Amended Senior Secured Loan Facility"), which amended the Senior Secured Loan Facility. The Amended Senior Secured Loan Facility included a new revolving credit facility tranche of $15 million, bringing the total revolving credit commitments under the facility to $35 million. The new revolving credit facility was due to mature in June 2019, bore interest at LIBOR plus a fixed margin of 2.5% and had a commitment fee equal to 40% of the margin of the revolving facility tranche calculated on the daily undrawn portion of such tranche.

              TheWindsor Knutsen,theBodil Knutsenand theCarmen Knutsen, assignments of earnings, charterparty contracts and insurance proceeds arewere pledged as collateral for the Amended Senior Secured Loan Facility. The Amended Senior Secured Loan Facility iswas guaranteed by the Partnership and KNOT Shuttle Tankers AS, and secured by vessel mortgages on theWindsor Knutsen, theBodil Knutsen and theCarmen Knutsen.

      Fortaleza and Recife Loan Facility

      The Senior SecuredFortaleza and Recife Loan Facility was repaid in full in September 2018 with the proceeds from the Multi-vessels Facility.

              In June 2014, the Partnership's subsidiary Knutsen Shuttle Tankers XII KS, as the borrower, entered into a senior syndicate secured loan facility in the amount of $140 million (the "Fortaleza and Recife Facility"). The Fortaleza and Recife Facility was drawn in November 2014 and replaced a $160 million loan facility previously secured by theFortaleza Knutsen and theRecife Knutsen. The Fortaleza and Recife Facility was repayable in quarterly installments over five years with a final balloon


      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      16) Long-Term Debt (Continued)

      payment due at maturity in June 2019. The facility bore interest at LIBOR plus a margin of 2.125%. TheFortaleza Knutsen and theRecife Knutsen, assignments of earnings, charterparty contracts and insurance proceeds were pledged as collateral for the New Fortaleza and Recife Facility. The facility was guaranteed by the Partnership and KNOT Shuttle Tankers AS and was secured by vessel mortgages on theFortaleza Knutsen and theRecife Knutsen.

      Hilda Loan Facility

              In May 2017, the Partnership's subsidiary, Knutsen Shuttle Tankers 14 AS, which owns the vesselHilda Knutsen, entered into a new $100 million senior secured term loan facility with Mitsubishi UFJ Lease & Finance (Hong Kong) Limited (the "New Hilda Facility"). The New Hilda Facility replaced the $117 million loan facility, which was due to be paid in full in August 2018. The New Hilda Facility is repayable in 28 consecutive quarterly installments with a final payment at maturity of $58.5 million, which includes the balloon payment and last quarterly installment. The New Hilda Facility bears interest at a rate per annum equal to LIBOR plus a margin of 2.2%. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors. The facility matures in May 2024.

              The Hilda Facility contains the following primary financial covenants:

      The aggregate market value of theWindsor Knutsen,Bodil Knutsen andCarmen Knutsen shall not be less than 110% of the outstanding balance under the Senior Secured Loan Facility for the first two years, 120% for the third and fourth years, and 125% thereafter;

        Market value of theHilda Knutsen shall not be less than 110% of the outstanding balance under the Hilda Facility for the first two years, 120% for the third and fourth year, and 125% thereafter;

        Positive working capital forof the borrowersborrower and the Partnership;



      Minimum liquidity of the Partnership of $17$15 million plus increments of $1 million for each additional vessel acquired by the Partnership in excess of eight vessels and $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract;



      Minimum book equity ratio for the Partnership of 30%; and



      Minimum EBITDA to interest ratio for the Partnership of 2.50.

      The Senior Secured Loan Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2015, the borrowers and the guarantors were in compliance with all covenants under this facility.

      $117 Million Hilda Loan Facility

      In July 2011, Knutsen Shuttle Tankers 14 AS, the subsidiary owning theHilda Knutsen, as the borrower, entered into a secured loan facility in an aggregate amount of $117 million (the “Hilda Facility”). The Hilda Facility is repayable in quarterly installments over five years with a final balloon payment due at maturity in July 2018. The Hilda Facility bears interest at LIBOR plus a fixed margin of 2.5%. The facility is secured by a vessel mortgage on theHilda Knutsen. TheHilda Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the Hilda Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors. The Hilda Facility contains the following primary financial covenants:

              

      Market value of theHilda Knutsen shall not be less than 110% of the outstanding balance under the Hilda Facility for the first two years, 120% for the third and fourth year, and 125% thereafter;

      Positive working capital of the borrower and the Partnership;

      Minimum liquidity of the Partnership of $17 million plus increments of $1 million for each additional vessel acquired by the Partnership and $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract;

      Minimum book equity ratio for the Partnership of 30%; and

      Minimum EBITDA to interest ratio for the Partnership of 2.50.

      The Hilda Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2015,2018, the borrower and the guarantors were in compliance with all covenants under this facility.

      $117 Million Torill Loan Facility

      In November 2011,January 2018, the Partnership's subsidiary, Knutsen Shuttle Tankers 15 AS, which owns the subsidiary owning thevesselTorill Knutsen, as the borrower, entered into a new $100 million senior secured term loan facility (the "Torill Facility") with a consortium of banks, in which The Bank of Tokyo-Mitsubishi UFJ acted as agent. The Torill Facility replaced a $117 million secured loan facility, which was due to be paid in an aggregate amount of $117 million (the “Torill Facility”).full in October 2018. The Torill Facility is repayable in 24 consecutive quarterly installments over five years with a final balloon payment of $60.0 million due at maturity in October 2018.maturity. The Torill Facility bears interest at a rate per annum equal to LIBOR


      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      16) Long-Term Debt (Continued)

      plus a fixed margin of 2.5%2.1%. The facility will mature in January 2024 and is securedguaranteed by a vessel mortgage on theTorill Knutsen.TheTorill Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the Torill Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors.Partnership. The Torill Facility contains the following primary financial covenants:

      Market value of theTorill Knutsen shall not be less than 110% of the outstanding balance under the Torill Facility for the first two years, 120% for the third and fourth year, and 125% thereafter;

        Market value of theTorill Knutsen shall not be less than 110% of the outstanding balance under the Torill Facility for the first two years, 120% for the third and fourth years, and 125% thereafter;

        Positive working capital of the borrower and the Partnership;



      Minimum liquidity of the Partnership of $17$15 million plus increments of $1 million for each additional vessel acquired by the Partnership and $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract;

      contract up to 8 vessels and $1 million for each owned vessel with less than 12 months remaining tenor on its employment contract in excess of 8 vessels;

      Minimum book equity ratio for the Partnership of 30%; and



      Minimum EBITDA to interest ratio for the Partnership of 2.50.

      The Torill Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2015,2018, the borrower and the guarantorsguarantor were in compliance with all covenants under this facility.

      $140 Million Secured Loan Facility

      In June 2014, the Partnership’s subsidiary Knutsen Shuttle Tankers XII KS, as the borrower, entered into a senior syndicate secured loan facility in the amount of $140 million (the “New Fortaleza and Recife Facility”). The New Fortaleza and Recife Facility was drawn in November 2014 and replaced a $160 million loan facility previously secured by theFortaleza Knutsenand theRecife Knutsen. The New Fortaleza and Recife Facility is repayable in quarterly installments over five years with a final balloon payment due at maturity at June 2019. The facility bears interest at LIBOR plus a margin of 2.125%. TheFortaleza Knutsenand theRecife Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the New Fortaleza and Recife Facility. The facility is guaranteed by the Partnership and KNOT Shuttle Tankers AS and is secured by vessel mortgages on theFortaleza Knutsen and theRecife Knutsen.

      The New Fortaleza and Recife Facility contains the following financial covenants:

      The aggregate market value of theFortaleza Knutsen andRecife Knutsen shall not be less than 110% of the outstanding balance under the New Fortaleza and Recife Facility for the first two years, 120% for the third and fourth year, and 125% thereafter;

      Positive working capital of the borrower and the Partnership;

      Minimum liquidity of the Partnership of $17 million plus increments of $1 million for each additional vessel acquired by the Partnership and $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract;

      Minimum book equity ratio for the Partnership of 30%; and

      Minimum EBITDA to interest ratio for the Partnership of 2.50.

      The New Fortaleza and Recife Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2015, the borrower and the guarantors were in compliance with all covenants under this facility.

      $172.5 Million Secured Loan Facility

      In April 2014, KNOT Shuttle Tankers 20 AS and KNOT Shuttle Tankers 21 AS, the subsidiaries owning theDan Cisne andDan Sabia, as the borrowers, entered into a $172.5 million senior secured loan facility. In connection with the Partnership’sPartnership's acquisition of theDan Cisne, in December 2014, the $172.5 million senior secured loan facility was split into a tranche related to theDan Cisne (the “Dan"Dan Cisne Facility”Facility") and a tranche related toDan Sabia (the “Dan"Dan Sabia Facility”Facility").

      The Dan Cisne Facility and the Dan Sabia Facility are guaranteed by the Partnership and secured by a vessel mortgage on theDan Cisne andDan Sabia. The Dan Cisne Facility and the Dan Sabia Facility bear interest at LIBOR plus a margin of 2.4% and are repayable in semiannual instalmentsinstallments with a final balloon payment due at maturity atin September 2023 and January 2024, respectively.

      The facilitiesDan Cisne Facility and Dan Sabia Facility contain the following financial covenants:

      Market value of each of theDan Cisne andDan Sabia shall not be less than 100% of the outstanding balance under the Dan Cisne Facility and Dan Sabia Facility, respectively, for the first three years, and 125% thereafter;

        Market value of each of theDan Cisne andDan Sabia shall not be less than 100% of the outstanding balance under the Dan Cisne Facility and Dan Sabia Facility, respectively, for the first three years, and 125% thereafter;

        Minimum liquidity of the Partnership of $17$15 million plus increments of $1 million for each additional vessel acquired by the Partnership in excess of eight vessels and $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract;

      and

      Minimum book equity ratio for the Partnership of 30%.

      The facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2015,2018, the borrowers and the guarantor were in compliance with all covenants under this facility.


      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      16) Long-Term Debt (Continued)

      $77.5 Million SecuredIngrid Loan Facility

              The Ingrid Facility was repaid in full in September 2018 with the proceeds from the Multi-vessels Facility.

      In June 2012, Knutsen NYK Shuttle Tankers 16 AS, the subsidiary owning theIngrid Knutsen, as the borrower, entered into a secured loan facility in an aggregate amount of $90.0 million (the “Ingrid Facility”"Ingrid Facility"). As of the time of the acquisition of theIngrid Knutsen, the aggregate amount outstanding under the facility was $77.5 million. The Ingrid Facility includesincluded two tranches. Tranche one iswas a commercial bank loan of $22.4$19.1 million, repayable in semi-annual installments with a final balloon payment due at maturity in December 2018. Tranche one bearsbore interest at LIBOR, plus a margin of 2.25%.

              Tranche two iswas an export credit loan of $55.1$42.0 million, repayable in semi-annual installments and maturingwhich was due to mature in November 2025. Tranche two bearsbore interest at an annual fixed rate of 3.85%, composed of a 2.5% bank facility rate plus a commission of 1.35% to the export credit guarantor. The facility was secured by a vessel mortgage on theIngrid Knutsen. TheIngrid Knutsen, assignments of earnings, charterparty contracts and insurance proceeds were pledged as collateral for the Ingrid Facility. The Partnership and KNOT Shuttle Tankers AS were the sole guarantors.

      Raquel Loan Facility

              In December 2014, Knutsen Shuttle Tankers 19 AS, the subsidiary owning theRaquel Knutsen, as the borrower, entered into a secured loan facility in an aggregate amount of $90.0 million (the "Raquel Facility"). The Raquel Facility is repayable in quarterly installments with a final balloon payment of $30.5 million due at maturity in March 2025. The Raquel Facility bears interest at an annual rate equal to LIBOR plus a margin of 2.0%. The facility is secured by a vessel mortgage on theIngridRaquel Knutsen. TheIngridRaquel Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the IngridRaquel Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors.

      The IngridRaquel Facility contains the following financial covenants:

        Market value of theIngrid Knutsen shall not be less than 125% of the outstanding balance under the Ingrid Facility;

      Positive working capital of the borrowerRaquel Knutsen shall not be less than 100% of the of the outstanding balance under the Raquel Facility for the first three years, and the Partnership;

      125% thereafter;

      Minimum liquidity of the Partnership of $17$15 million plus increments of $1 million for each additional vessel acquired by the Partnership in excess of eight vessels and $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract;

      and

      Minimum book equity ratio for the Partnership of 30%; and
      .

              

      Minimum EBITDA to interest ratio for the Partnership of 2.50.

      The IngridRaquel Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2015,2018, the borrower and the guarantors were in compliance with all covenants under this facility.

      $12 Million Seller’s CreditTordis Loan Facility

              In April 2015, KNOT Shuttle Tankers 24 AS, the subsidiary owning theTordis Knutsen, as the borrower, entered into a secured loan facility (the "Tordis Facility"). As part of financingthe time of the acquisition of theTordis Knutsen on March 1, 2017, the aggregate amount outstanding under the facility was


      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      16) Long-Term Debt (Continued)

      $114.4 million. The Tordis Facility is repayable in quarterly installments with a final balloon payment of $70.8 million due at maturity in November 2021. The Tordis Facility bears interest at an annual rate equal to LIBOR plus a margin of 1.9%. The facility is secured by a vessel mortgage on theTordis Knutsen. TheTordis Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the purchaseTordis Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors.

              The Tordis Facility contains the following financial covenants:

        Aggregate market value of theDan CisneTordis Knutsen,, KNOT provided a $12.0 million seller’s credit (the “Seller’s Credit”), which was guaranteed by theVigdis Knutsen and theLena Knutsen shall not be less than 130% of the aggregate outstanding balance under the Tordis Facility, the Vigdis Facility and the Lena Facility at any time;

        Positive working capital of the borrower and the Partnership;

        Minimum liquidity of the Partnership hadof $15 million plus increments of $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract up to 8 vessels and $1 million for each owned vessel with less than 12 months remaining tenor on its employment contract in excess of 8 vessels;

        Minimum book equity ratio for the Partnership of 30%; and

        Minimum EBITDA to interest ratio for the Partnership of 2.50.

              The Tordis Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a maturity datevessel and customary events of default. As of December 31, 2018, the borrower and the guarantors were in compliance with all covenants under this facility.

      Vigdis Loan Facility

              In April 2015, KNOT Shuttle Tankers 25 AS, the subsidiary owning theVigdis Knutsen, as the borrower, entered into a secured loan facility (the "Vigdis Facility"). The Vigdis Facility is repayable in quarterly installments with a final balloon payment of $70.8 million due at maturity in February 2022. The Vigdis Facility bears interest at an annual rate equal to LIBOR plus a margin of 1.9%. The facility is secured by a vessel mortgage on theVigdis Knutsen. TheVigdis Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the Vigdis Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors.

              The Vigdis Facility contains the following financial covenants:

        Aggregate market value of theTordis Knutsen, theVigdis Knutsen and theLena Knutsen shall not be less than 130% of the aggregate outstanding balance under the Tordis Facility, the Vigdis Facility and the Lena Facility at any time;

        Positive working capital of the borrower and the Partnership;

        Minimum liquidity of the Partnership of $15 million plus increments of $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract up to 8 vessels and $1 million for each owned vessel with less than 12 months remaining tenor on its employment contract in excess of 8 vessels;

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      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      16) Long-Term Debt (Continued)

        Minimum book equity ratio for the Partnership of 30%; and

        Minimum EBITDA to interest ratio for the Partnership of 2.50.

              The Vigdis Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2018, the borrower and the guarantors were in compliance with all covenants under this facility.

      Lena Loan Facility

              In April 2015, KNOT Shuttle Tankers 26 AS, the subsidiary owning theLena Knutsen, as the borrower, entered into a secured loan facility (the "Lena Facility"). The Lena Facility is repayable in quarterly installments with a final balloon payment of $68.6 million due at maturity in June 2022. The Lena Facility bears interest at an annual rate equal to LIBOR plus a margin of 1.9%. The facility is secured by a vessel mortgage on theLena Knutsen. TheLena Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the Lena Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors.

              The Lena Facility contains the following financial covenants:

        Aggregate market value of theTordis Knutsen, theVigdis Knutsen and theLena Knutsen shall not be less than 130% of the aggregate outstanding balance under the Tordis Facility, the Vigdis Facility and the Lena Facility at any time;

        Positive working capital of the borrower and the Partnership;

        Minimum liquidity of the Partnership of $15 million plus increments of $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract up to 8 vessels and $1 million for each owned vessel with less than 12 months remaining tenor on its employment contract in excess of 8 vessels;

        Minimum book equity ratio for the Partnership of 30%; and

        Minimum EBITDA to interest ratio for the Partnership of 2.50.

              The Lena Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2018, the borrower and the guarantors were in compliance with all covenants under this facility.

      Brasil Loan Facility

              In June 2017, KNOT Shuttle Tankers 32 AS, the subsidiary owning theBrasil Knutsen, as the borrower, entered into a secured loan facility (the "Brasil Facility"). The Brasil Facility is repayable in quarterly installments with a final balloon payment of $40.0 million due at maturity in July 2022. The Brasil Facility bears interest at an annual rate equal to LIBOR plus a margin of 2.3%. The facility is secured by a vessel mortgage on theBrasil Knutsen. TheBrasil Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the Brasil Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors.


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      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      16) Long-Term Debt (Continued)

              The Brasil Facility contains the following financial covenants:

        Market value of theBrasil Knutsen shall not be less than 125% of the of the outstanding balance under the Brasil Facility for the first four years, and 135% thereafter;

        Positive working capital of the borrower and the Partnership;

        Minimum liquidity of the Partnership of $15 million plus increments of $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract up to a total of eight (8) vessels and $1 million for each owned vessel with less than 12 months remaining tenor on its employment contract up to a total of twelve (12) vessels;

        Minimum book equity ratio for the Partnership of 30%; and

        Minimum EBITDA to interest ratio for the Partnership of 2.50.

              The Brasil Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2018, the borrower and the guarantors were in compliance with all covenants under this facility.

      Anna Loan Facility

              In September 2016, KNOT Shuttle Tankers 30 AS, the subsidiary owning theAnna Knutsen, as the borrower, entered into a secured loan facility (the "Anna Facility"). The Anna Facility is repayable in quarterly installments with a final balloon payment of $57.1 million due at maturity in March 2022. The Anna Facility bears interest at an annual rate equal to LIBOR plus a margin of 2.0%. The facility is secured by a vessel mortgage on theAnna Knutsen. TheAnna Knutsen, assignments of earnings, charterparty contracts and insurance proceeds are pledged as collateral for the Anna Facility. The Partnership and KNOT Shuttle Tankers AS are the sole guarantors.

              The Anna Facility contains the following financial covenants:

        Market value of theAnna Knutsen shall not be less than 130% of the aggregate outstanding balance under the Anna Facility at any time;

        Positive working capital of the borrower and the Partnership;

        Minimum liquidity of the Partnership of $15 million plus increments of $1.5 million for each owned vessel with less than 12 months remaining tenor on its employment contract up to 8 vessels and $1 million for each owned vessel with less than 12 months remaining tenor on its employment contract in excess of 8 vessels;

        Minimum book equity ratio for the Partnership of 30%; and

        Minimum EBITDA to interest ratio for the Partnership of 2.50.

              The Anna Facility also identifies various events that may trigger mandatory reduction, prepayment and cancellation of the facility, including total loss or sale of a vessel and customary events of default. As of December 31, 2018, the borrower and the guarantors were in compliance with all covenants under this facility.


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      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      16) Long-Term Debt (Continued)

      $25 Million Revolving Credit Facility

              In August 2017, KNOT Shuttle Tankers AS entered into an unsecured revolving credit facility of $25 million with NTT Finance Corporation. The facility will mature in August 2019, and borebears interest at LIBOR plus a fixed margin of 4.5%. Accrued interest1.8% and has a commitment fee of 0.5% on the Seller’s Credit accumulated at the end of each six-month period and was capitalized. On June 15, 2015, the Partnership repaid the Seller’s Credit with aundrawn portion of the net proceeds from the June 2015 Offering.facility.

      17) Income Taxes

      (a)
      Components of Current and Deferred Tax Expense

      All of the income from continuing operations before income taxes was taxable to Norway and UK for the years ended December 31, 2015, 20142018, 2017 and 20132016. The entities and activities taxable to Norway are subject to the Norwegian tonnage tax regime. Under the Norwegian tonnage tax regime, the tax is based on the tonnage of the vessel, and the operating income is tax free. The net financial income and expense remains taxable as follows:ordinary income tax for entities subject to the tonnage tax regime. See Note 2(r)—Income Taxes. The activities taxable to UK relates to KNOT UK and is based on the operating income for the entity.

              

         Year Ended December 31, 
      (U.S. Dollars in thousands)  2015   2014   2013 

      Income before income taxes

        $40,383    $27,407    $17,891  
        

       

       

         

       

       

         

       

       

       

      The significant components of current and deferred income tax expense attributable to income from continuing operations for the years ended December 31, 2015, 20142018, 2017 and 20132016 are as follows:

         Year Ended December 31, 
      (U.S. Dollars in thousands)  2015   2014   2013 

      Current tax benefit (expense)

        $(11  $(15  $(686

      Deferred tax benefit (expense)

         70    —      (2,141
        

       

       

         

       

       

         

       

       

       

      Income tax benefit (expense)

        $59    $(15  $(2,827
        

       

       

         

       

       

         

       

       

       

       
       Year Ended
      December 31,
       
      (U.S. Dollars in thousands)
       2018 2017 2016 

      Current tax benefit (expense)

       $(18)$(12)$(14)

      Deferred tax benefit (expense)

        20  28  29 

      Income tax benefit (expense)

       $2 $16 $15 
      (b) Tax Rate Reconciliation

      Taxation

      Income taxes attributable to income from continuing operations was an income tax benefit (expense) of $59, $(15)$2, $16 and $(2,827)$15 for the years ended December 31, 2015, 20142018, 2017 and 2013,2016, respectively, and differed from the amounts computed by applying the Norwegian and the UK ordinary income tax rate of 27%23% and 20% in 20152018, respectively, by applying the Norwegian and 2014the UK ordinary income tax rate of 24% and 28%20% in 20132017, respectively, and by applying the Norwegian and the UK ordinary income tax rate of 25% and 20% in 2016, respectively, to pretax net income as a result of the following:

       
       Year Ended
      December 31,
       
      (U.S. Dollars in thousands)
       2018 2017 2016 

      Income tax benefit (expense) at Norwegian tonnage tax regime

       $20 $28 $29 

      Income tax benefit (expense) within UK

        (18) (12) (14)

      Income tax benefit (expense)

       $2 $16 $15 

      Effective tax rate

        0% 0% 0%

      Table of Contents

         Year Ended December 31, 
      (U.S. Dollars in thousands, except for tax rate)  2015  2014  2013 

      Income tax benefit (expense) at Norwegian ordinary tax regime(1)

        $ —    $ —    $(111

      Income tax benefit (expense) at Norwegian tonnage tax regime

         70    —     (188

      Income tax benefit (expense) within UK

         (11  (15  —   

      Adjustments for amounts not taxable under tonnage tax regime

         —     —     —   

      Adjustments due to permanent differences

         —     —     —   

      Translation differences (1)

         —     —     168  

      Entrance tax into the Norwegian tonnage tax regime

         —     —     (2,696

      Reduction in income tax benefit resulting from a change in valuation allowance

         —     —     —   
        

       

       

        

       

       

        

       

       

       

      Income tax benefit (expense)

        $59   $(15 $(2,827
        

       

       

        

       

       

        

       

       

       

      Effective tax rate

         0  0  16
        

       

       

        

       

       

        

       

       

       


      KNOT OFFSHORE PARTNERS LP

      (1)These tax elements are related to the carve-out period in 2013, a total tax benefit of $57.

      Notes to Consolidated Financial Statements (Continued)

      17) Income Taxes (Continued)

      (c)
      Components of Deferred Tax Assets and Liabilities

      The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities as of December 31, 20152018 and 20142017 are presented below.below:

       
       As of December 31, 
      (U.S. Dollars in thousands)
       2018 2017 

      Deferred tax assets:

             

      Financial derivatives

       $24 $(12)

      Financial loss carry forwards for tonnage tax

        16,946  15,697 

      Total deferred tax asset

        16,970  15,685 

      Less valuation allowance

        (16,970) (15,685)

      Net deferred tax asset

           

      Deferred tax liabilities:

             

      Entrance tax

        453  624 

      Total deferred tax liabilities

        453  624 

       $453 $624 

              

         As of December 31, 
      (U.S. Dollars in thousands)  2015   2014 

      Deferred tax assets:

          

      Interest rate swaps

        $6   $—   

      Financial loss carry forwards for tonnage tax

         10,314     9,100  
        

       

       

         

       

       

       

      Total deferred tax asset

         10,320     9,100  

      Less valuation allowance

         (10,320   (9,100
        

       

       

         

       

       

       

      Net deferred tax asset

         —      —   
        

       

       

         

       

       

       

      Deferred tax liabilities:

          

      Entrance tax

         877     1,402  
        

       

       

         

       

       

       

      Total deferred tax liabilities

         877     1,402  
        

       

       

         

       

       

       

      Net deferred tax liabilities

        $877    $1,402  
        

       

       

         

       

       

       

      The net deferred tax liability is classified in the consolidated and combined carve-out balance sheets as follows:

       
       As of
      December 31,
       
      (U.S. Dollars in thousands)
       2018 2017 

      Current deferred tax asset

       $ $ 

      Non-current deferred tax liabilities

        453  624 

      Net deferred tax liabilities

       $453 $624 

              

         As of December 31, 
      (U.S. Dollars in thousands)  2015   2014 

      Current deferred tax asset

        $—     $—   

      Non-current deferred tax liabilities

         (877   (1,402
        

       

       

         

       

       

       

      Net deferred tax liabilities

        $(877  $(1,402
        

       

       

         

       

       

       

      Changes in the net deferred tax liabilities at December 31, 20152018 and 20142017 are presented below:

       
       As of
      December 31,
       
      (U.S. Dollars in thousands)
       2018 2017 

      Net deferred tax liabilities at January 1,

       $624 $685 

      Aquisition of KNOT Shuttle Tankers 26 AS

          99 

      Change in temporary differences

        (142) (198)

      Translation differences

        (29) 38 

      Net deferred tax liabilities at December 31,

       $453 $624 

              

         Year Ended December 31, 
      (U.S. Dollars in thousands)  2015   2014 

      Net deferred tax liabilities at January 1

        $1,402    $2,141  

      Change in temporary differences

         (307   (350

      Translation differences

         (218   (389

      Elimination of deferred tax not transferred to the partnership

         —      —   

      Changes in temporary differences after the IPO date

         —      —   
        

       

       

         

       

       

       

      Net deferred tax liabilities at December 31

        $877    $1,402  
        

       

       

         

       

       

       

      The Partnership records a valuation allowance for deferred tax assets when it is more likely than not that some or all of the benefit from the deferred tax asset will not be realized. The valuation allowances were $10.3$17.0 million and $9.1$15.7 million respectively, as of December 31, 20152018 and 2014.2017, respectively. The valuation allowances relate to the financial loss carry forwards and other deferred tax assets for tonnage tax that, in the judgment of the Partnership, are more-likely-than not to be realized reflecting


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      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      17) Income Taxes (Continued)

      the Partnership’sPartnership's cumulative loss position for tonnage tax. In assessing the realizability of deferred tax assets, the Partnership considers whether it is more-likely-than-not that some portion or all of the deferred tax assets will not be realized taking into account all the positive and negative evidence available. As of December 31, 2014,2018, the Partnership determined that the deferred tax assets are likely to not be realized, and the booked value was, therefore, zero. There is no expiration date for losses carried forward.

      After the reorganization of the Partnership’s predecessor’sPartnership's predecessor's activities into the new group structure in February 2013, all profit from continuing operations in Norway is taxable within the tonnage tax regime. The consequence of the reorganization is a one-time entrance tax into the Norwegian tonnage tax regime due to the Partnership’sPartnership's acquisition of the shares in the subsidiary that owns theFortaleza Knutsenand theRecife Knutsen. The total amount of the entrance tax was estimated to be approximately $3.0 million, which was recognized in the three months ended March 31, 2013. The entrance tax on this gain is payable over several years and is calculated by multiplying the Norwegian tax rate by the declining balance of the gain, which will decline by 20% each year. The Norwegian corporate tax rate was reduced from 28%24% in 20132017 to 27%23% in 2014 and 20152018 and will be 25%22% effective as of January 1, 2016.2019. The entrance tax had declined to approximately $2.7 million at December 31, 2013 due to translation effects and tax rate changes and at December 31, 2014 the entrance tax had declined to approximately $1.8 million due to paid entrance tax, change in tax rate and translation effects. At December 31, 2015 the entrance tax had declined to approximately $1.1 million due to paid entrance tax, change in tax rate and translation effectseffects. At December 31, 2016 the entrance tax had declined to approximately $0.9 million due to paid entrance tax, change in tax rate and translation effects. At December 31, 2017 the entrance tax had declined to approximately $0.7 million due to paid entrance tax, change in tax rate and translation effects. At December 31, 2018 the entrance tax had declined to approximately $0.6 million due to paid entrance tax, change in tax rate and translation effects. The taxes payable, mainly related to the entrance tax, are calculated based on a tax rate of 27%23% for 2015,2018 and 24% for 2017, and the deferred tax liabilities, also mainly related to the entrance tax, are calculated based on a tax rate of 25%22% and 23% effective as from January 1, 2016.2019 and January 1, 2018, respectively. Income tax expense within the UK of $11,000$18,331 and $15,000$11,563 for 20152018 and 2014,2017, respectively, was calculated by multiplying the tax basis with the UK tax rate of 20%.

      In 2013, the total entrance tax was estimated at $2.7 million of which approximately $0.6 million was estimated to be payable during 2014. In addition, ordinary tonnage taxes payable were estimated at $0.1 million. Total income taxes payable were estimated at $0.7 million as of December 31, 2013 and equaled taxes paid in 2014.        As of December 31, 2014,2018, the total income taxes payable wereare estimated to be $0.4$0.1 million and consistedconsist of payable entrance tax and ordinary UK corporation tax. As of December 31, 2015,2017, the total income taxes payable arewere estimated to be $0.2 million and consist of payable entrance tax and ordinary UK corporation tax.

      Approximately $0.6        As of December 31, 2018, approximately $0.1 million of the estimated entrance tax of $2.7 million as of December 31, 2013 was paid during 2014. Approximately $0.3 million of the estimated entrance tax of $1.8 million as of December 31, 2014 was paid during 2015. Approximately $0.2 million of the estimated entrance tax of $1.1$0.6 million is estimated to be payable in the first and second quarter of 20162019 and is presented as income taxes payable, while $0.9$0.5 million is presented as non-current deferred taxes payable. As of December 31, 2017, approximately $0.2 million of the estimated entrance tax of $0.7 million was estimated to be payable in the first and second quarter of 2018 and was presented as income taxes payable, while $0.5 million was presented as non-current deferred taxes payable. Additionally, a tax liability of approximately $0.1 million was recorded as deferred taxes payable and relates to the acquisition of KNOT Shuttle Tankers 26 AS.

      The tax loss carry forward from ordinary taxation and financial loss carry forwards for tonnage tax have no expiration dates.


      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      17) Income Taxes (Continued)

      The Partnership’sPartnership's Norwegian income tax returns are subject to examination by Norwegian tax authorities going back ten years from 2014. The Partnership had no unrecognized tax benefits as December 31, 20152018 and 2014.2017. During the years ended December 31, 20152018 and 2014,2017, the Partnership did not incur any interest or penalties on its tax return.

              On December 14, 2017, the Norwegian government concluded the negotiations with the EFTA Surveillance Authority regarding the Norwegian tonnage tax regime, which has been approved for another ten years, until 2027. Pursuant to the approval, Norway has introduced restrictions that eliminates the ability of companies that own vessels under certain bareboat charters to qualify for the Norwegian tonnage tax regime. Companies that no longer qualify for the Norwegian tonnage tax regime will instead be subject to Norwegian corporate income tax. However, there are no limitations on intra-group bareboat chartering, as well as bareboat charters where crewing services are carried out by a related party. In order to constitute a related party, a minimum of 25% ownership/control is required, according to the "associated enterprise" definition in the ATAD directive (Council Directive EU 2016/1164.) Due to the fact that KNOT has an ownership interest in the Partnership that exceeds 25% as well as an ownership interest of 100% in KNOT Management and KNOT Management Denmark AS which provide services to the Vessels owned by the Partnership which operate on bareboat charters, the Vessels operating on bareboat charters are effectively seen as time charter services to the customer. The services are provided to the charterer. If this related party situation is ended, other alternatives and possibly mitigating measures must be evaluated.

      18) Related Party Transactions

      (a)
      Related Parties

      Historically,        Prior to the Combined EntityIPO, the Partnership's predecessor operated as an integrated part of KNOT. KNOT is owned 50% by TSSI and 50% by Nippon Yusen Kaisha (“NYK”("NYK"). TSSI also controls 99% of KOAS, which subcontracts services from Knutsen OAS Management AS, which served as the vessel management companies for KNOT and its subsidiaries until June 30, 2012. As of July 1, 2012, KNOT Management, a 100% owned subsidiary of KNOT, assumed responsibility for the commercial and technical management of the Vessels.

      The Partnership has been charged by KNOT, KOAS and TSSI for commercial services related to the charters, technical and operational support related to the operation of the Vessels, certain administrative costs and finance fees. Consequently, for the periods prior to April 16, 2013, for the purpose of the consolidated and combined carve-out statements of operations, these costs and fees include allocations as described above and in Note 2(a)—Summary of Significant Accounting Policies—Basis of Preparation.

      On February 18, 2013, the Partnership terminated the Commercial Management Agreements that existed between KNOT Management and the owners of theWindsor Knutsen, and theBodil Knutsen, and on March 20, 2013, the Partnership terminatedCarmen Knutsen, the Commercial Management Agreements that existed between KNOT Management Hilda Knutsen, theTorill Knutsen, theIngrid Knutsen, theRaquel Knutsen, theTordis Knutsen, theVigdis Knutsen, theLena Knutsen, theBrasil Knutsenand the ownerAnna Knutsen, all of theFortaleza Knutsen and theRecife Knutsen. In consideration for the termination of the Commercial Management Agreements a cancellation fee was paid for each Vessel equal to the remuneration to be paid in accordance with the applicable Commercial Management Agreement until the expiration of the time charter or bareboat charter for each Vessel. The cancellation fees have been charged to the consolidated and combined carve-out statement of operations as described in Note 2(a)—Summary of Significant Accounting Policies—Basis of Preparation. On February 18, 2013, the existing technical management agreements were amended. These agreements govern the crew, technical and commercial management of the Vessels. TheWindsor Knutsen and theBodil Knutsen, which operate under time charters, are subject to amended technical management agreements pursuant to which certain crew, technical and commercial management services are provided by KNOT Management.Management or KNOT Management Denmark AS ("KNOT Management Denmark"). Under these amended technical management agreements, the Partnership’sPartnership's subsidiaries pay fees to and reimburse the costs and expenses of KNOT Management. TheFortaleza Knutsen, theRecife Knutsen, theDan Cisneand theDan Sabiaoperate under bareboat charters and, as a result, the customer is responsible for providing the crew, technical and commercial management of the vessel. However, each of these vessels are subject to management and administration agreements with either KNOT Management or KNOT Management Denmark, AS (“KNOT Management Denmark”), a 100% owned subsidiary of KNOT, pursuant to which these companies provide general monitoring services for the vessels in exchange for an annual fee.

      On March 25, 2013, the        The Partnership entered intois a party to an administrative services agreement with KNOT UK, pursuant to which KNOT UK provides administrative services, and KNOT UK is permitted to subcontract certain of the administrative services provided under the administrative services agreement to KOAS UK and KOAS. On May 7, 2015, the Partnership entered into an amendment to the administrative services agreement, which allows KNOT UK to also subcontract administrative services to KNOT Management. Effective as of February 26, 2018, the Partnership entered into a second amendment to the


      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      18) Related Party Transactions (Continued)

      administrative services agreement extending the term of the agreement indefinitely, subject to termination by any party upon 90 days' notice for any reason.

      The amounts of such costs and expenses included in the consolidated and combined carve-out statements of operations for the years ended December 31, 2015, 20142018, 2017 and 20132016 are as follows:

         Year Ended December 31, 
      (U.S. Dollars in thousands)  2015   2014   2013 

      Statements of operations:

            

      Time charter and bareboat revenues:

            

      Charter revenues from KNOT (1)

        $16,231    $8,881    $—   

      Commercial commission fee from KNOT to Vessels (2)

         —      —      (95

      Cancellation fee from KNOT to Vessels (3)

         —      —      (3,448

      Other income:

            

      Guarantee income from KNOT(4)

         122    —      —   

      Operating expenses:

            

      Technical and operational management fee from KNOT Management to Vessels (5)

         2,420     1,764     1,073  

      General and administrative expenses:

            

      Administration fee from KNOT Management (6)

         1,103     642     428  

      Administration fee from KOAS (6)

         461     425     392  

      Administration fee from KOAS UK (6)

         151     151     112  

      Administration and management fee from KNOT (7)

         170     99     82  

      Accounting service fee from KNOT (8)

         31     25     27  

         Year Ended December 31, 
      (U.S. Dollars in thousands)  2015   2014   2013 

      IPO administration cost from KNOT (9)

         —       —       454  

      Finance income (expense):

            

      Financing service fee from KNOT to Vessels (10)

         —      (50   —   

      Interest expense charged from KNOT (11) and (12)

         (268   (277   (336

      Interest income charged to TSSI (11)

         —      —      10  

      Guarantee commission from TSSI to Vessels (13)

         —      —      (210

      Guarantee commission from KNOT to Vessels (13)

         —      —      (424
        

       

       

         

       

       

         

       

       

       

      Total income (expenses)

        $11,749    $5,448    $(7,071
        

       

       

         

       

       

         

       

       

       

      (1)Charter revenue
       
       Year Ended December 31, 
      (U.S. Dollars in thousands)
       2018 2017 2016 

      Statements of operations:

                

      Other income:

                

      Guarantee income from KNOT(1)

       $749 $1,499 $770 

      Operating expenses:

                

      Technical and operational management fee from KNOT to Vessels(2)

        6,491  4,617  2,971 

      General and administrative expenses:

                

      Administration fee from KNOT Management(3)

        1,434  1,457  1,279 

      Administration fee from KOAS(3)

        583  461  382 

      Administration fee from KOAS UK(3)

        123  122  145 

      Administration and management fee from KNOT(4)

        161  149  203 

      Finance income (expense):

                

      Interest expense charged from KNOT(5)

          (52) (128)

      Total income (expenses)

       $(8,043)$(5,359)$(4,338)

      (1)
      Guarantee income from KNOT: Pursuant to the Omnibus Agreement, KNOT agreed to guarantee the payments of the hire rate under the initial charters of each of theBodil Knutsen and theWindsor Knutsen for a period of five years from the closing date of the IPO. BG Group, the charterer of theWindsor Knutsen, did not exercise its option to extend theWindsor Knutsen time charter after the expiration of its initial term, and on July 29, 2014 KNOT and the Partnership entered into a time charter for the vessel at a rate of hire that would have been in effect during the option period under the previous BG Group time charter. This charter was effective until theWindsor Knutsencommenced in October 2015 on new BG Group time charter. See Note 18(b)—Related Party Transactions—Guarantees and Indemnifications.
      (2)Commercial commission fee from KNOT to Vessels: KNOT provides commercial services related to negotiating and maintaining the charters. KNOT invoices a fixed percentage of revenue as a commercial commission fee for these services.
      (3)Cancellation fee from KNOT to Vessels: In consideration for the termination of the Commercial Management Agreement, a cancellation fee was paid for each Vessel equal to the remuneration to be paid in accordance with the Commercial Management Agreement until the expiration of the time charter for each Vessel. As the cancellation fee relates to the commercial commission fee, it has been presented as part of operating income, consistent with the presentation of commissions.
      (4)Guarantee income from KNOT: Pursuant to the Omnibus Agreement, KNOT agreed to guarantee the payments of the hire rate under the initial charter of theBodil Knutsen and theWindsor Knutsen for a period of five years from the closing date of the IPO. In October 2015, theWindsor Knutsencommended on a new BG Group time charter with a hire rate below the hire rate in the initial charter. The difference between the new hire rate and the initial rate is paid by KNOT. See Note 18(b)—Related Party Transactions—Guarantees and Indemnifications.
      (5)Technical and operational management fee from KNOT to Vessels: KNOT Management provides technical and operational management of the vessels on time charter including crewing, purchasing, maintenance and other operational service. In addition, there is also a charge for 24-hour emergency response services provided by KNOT Management for all vessels managed by KNOT Management.
      (6)Administration fee from KNOT Management, KOAS and KOAS UK: Administration costs include the compensation and benefits of KNOT management and administrative staff as well as other general and administration expenses. Some benefits are also provided by KOAS and KOAS UK. Net administration costs are total administration cost plus a 5% margin, reduced for the total fees for services delivered by the administration staffs (the accounting service fees (see (8) below), the financing service fees (see (10) below) and the estimated shareholder costs for KNOT that have not been allocated. As such, the level of net administration costs as a basis for the allocation can vary from year to year based on the administration and financing services offered by KNOT to all the vessels in its fleet each year.
      (7)Administration fee and management fee from KNOT: For bareboat charters, the shipowner is not responsible for providing crewing or other operational services and the customer is responsible for all vessel operating expenses and voyage expenses. However, each of the vessels under bareboat charters are subject to management and administration agreements with either KNOT Management or KNOT Management Denmark, pursuant to which these companies provide general monitoring services for the vessels in exchange for an annual fee.
      (8)Accounting service fee from KNOT: KNOT invoiced each subsidiary a fixed fee for the preparation of the statutory financial statements.
      (9)IPO administration cost from KNOT: In connection with the preparation of the financial statements and the Form F-1, KNOT has invoiced the actual costs for internal resources, including salaries and administration cost, plus a 5% margin. Since the costs were not incremental cost directly attributable to the IPO, they were expensed as incurred.
      (10)Financing service fee from KNOT to Vessels: KNOT invoiced each vessel for a fixed percentage of the principal of any new loan facilities for vessel financing as compensation for the time and costs of loan negotiations with external banks.
      (11)Interest expense charged from, interest income charged to KNOT/TSSI: KNOT/TSSI invoiced interest (expense) income for any outstanding payables to (receivable from) owners and affiliates to the vessel-owning subsidiaries (including Knutsen Shuttle Tankers XII KS, which owns theRecife Knutsen and theFortaleza Knutsen and Knutsen Shuttle Tankers XII AS). Since payables to (receivables from) owners and affiliates are not tracked by vessel, balances based upon payments by owners to the shipyard have been allocated to theBodil Knutsen and theWindsor Knutsen (see Note 2(a)—Summary of Significant Accounting Policies—Basis of Preparation for a description of the allocation principles applied. Interest expense has been allocated based upon the allocated payables to owners and affiliates and the historical interest rates charged.
      (12)Interest expense to KNOT on Sellers’ Credit:As part of the financing of the purchase of theCarmen Knutsenon August 1, 2013,and the purchase of theDan Cisne on December 15, 2014, KNOT provided a seller’s credit to KNOT Shuttle Tankers AS in form of loans. Each such loan bore interest at a rate equal to LIBOR plus a fixed margin of 4.5% (see Note 16—Long-term Debt).
      (13)Guarantee commission from TSSI/KNOT to Vessels: TSSI and KNOT were guarantors for the Combined Entity’s loan facilities (see Note 16—Long-term Debt and Note 18(b)—Related Party Transactions—Guarantees and Indemnifications). TSSI and KNOT invoiced an annual commission to each of the Vessels as a fixed percentage of the outstanding balance as compensation for the guarantee.

      (b) Guarantees and Indemnifications

      Pursuant to the Omnibus Agreement, KNOT agreed to guarantee the payments of the hire rate under the existing chartersinitial charter of each of theBodil Knutsenand theWindsor Knutsenfor a period of five years from the closing date of the IPO. The Partnership will not incur any guarantee commissionsIPO (until April 15, 2018). In October 2015, theWindsor Knutsencommenced on a new Shell time charter with a hire rate below the hire rate in the future relatinginitial charter. The difference between the new hire rate and the initial rate was paid by KNOT until April 15, 2018. TheVigdis Knutsensuffered damages to its hull in connection with a ship-to-ship loading on May 24, 2017 and the vessel went off-hire 6 days in June 2017 due to repairs of the damage. In connection with theVigdis Knutsenacquisition, KNOT agreed to pay for the repair cost and charter hire lost in connection with the incident. The reimbursement from KNOT for lost charter hire is accounted for as guarantee income. See Note 18(b)—Related Party Transactions—Guarantees and Indemnifications.

      (2)
      Technical and operational management fee from KNOT ManagementorKNOT Management Denmark to Vessels: KNOT Management or KNOT Management Denmark provides technical and operational management of the vessels on time charter including crewing, purchasing, maintenance and other operational service. In addition, there is also a charge for 24-hour emergency response services provided by KNOT Management for all vessels managed by KNOT Management.

      (3)
      Administration fee from KNOT Management and Knutsen OAS Shipping AS ("KOAS") and Knutsen OAS (UK) Ltd. ("KOAS UK"): Administration costs include the compensation and benefits of KNOT Management's management and administrative staff as well as other general and administration expenses. Some benefits are also provided by KOAS and KOAS UK. Net administration costs are total administration cost plus a 5% margin, reduced for the total fees for services delivered by the administration staffs and the estimated shareholder costs for KNOT that

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      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      18) Related Party Transactions (Continued)

        have not been allocated. As such, guarantees.the level of net administration costs as a basis for the allocation can vary from year to year based on the administration and financing services offered by KNOT to all the vessels in its fleet each year. KNOT Management also charges each subsidiary a fixed annual fee for the preparation of the statutory financial statement.

      (4)
      Administration and management fee from KNOT Management and KNOT Management Denmark: For bareboat charters, the shipowner is not responsible for providing crewing or other operational services and the customer is responsible for all vessel operating expenses and voyage expenses. However, each of the vessels under bareboat charters is subject to a management and administration agreement with either KNOT Management or KNOT Management Denmark, pursuant to which these companies provide general monitoring services for the vessels in exchange for an annual fee.

      (5)
      Interest expense charged from KNOT: KNOT invoiced interest (expense) income for any outstanding payables to (receivable from) owners and affiliates to the vessel-owning subsidiaries.
      (b)
      Guarantees and Indemnifications

              Pursuant to the Omnibus Agreement, KNOT agreed to guarantee the payments of the hire rate under the initial charters of each of theWindsor Knutsenand theBodil Knutsenfor a period of five years from the closing date of the IPO (until April 15, 2018).

      In April 2014, the Partnership was notified that BG GroupShell would not exercise its option to extend theWindsor Knutsentime charter after the expiration of its initial term. The vessel was re-delivered on July 28, 2014. In order to comply with its obligations under the Omnibus Agreement, on July 29, 2014, KNOT and the Partnership entered into a time charter for the vessel at a rate of hire that would have been in effect during the option period under the previous BG GroupShell time charter. This charter was effective until the new BG GroupShell time charter commenced in October 2015. The new Shell charter has a hire rate that is lower than the hire rate in the initial charter. The difference between the new hire rate and the initial rate was paid by KNOT until April 15, 2018.

      Prior to the IPO,        On June 1, 2017, the Partnership entered into amended financing agreements with various lenders. The majorityacquired KNOT's 100% interest in KNOT Shuttle Tankers 25 AS, the company that owns and operate theVigdis Knutsen. Shortly before the closing of the Partnership’s original external vessels financing agreements have been guaranteed by either KNOT or TSSI for whichacquisition and on May 24, 2017, theVigdis Knutsensuffered damages to its hull in connection with a guarantee commission was paid. Followingship-to-ship loading and the completionvessel went off-hire 6 days in June 2017 due to repairs of the IPOdamage. In connection with theVigdis Knutsenacquisition, KNOT agreed to pay for the repair cost and charter hire lost in connection with the amendments to the vessel financing agreements, the Partnership guaranteed the obligations of the Partnership’s subsidiaries directly under the vessel financing agreements. Therefore, after the IPO, the Partnership did not incur any guarantee commissions to KNOT and TSSI.incident.

      Under the Omnibus Agreement, KNOT has agreed to indemnify the Partnership until April 15, 2018 (or for a period of at least three years after the purchase of theHilda Knutsen, theTorill Knutsen, theIngrid Knutsenand theRaquel Knutsen, as applicable), against certain environmental and toxic tort liabilities with respect to certain assets that KNOT contributed or sold to the Partnership to the extent arising prior to the time they were contributed or sold. However, claims are subject to a deductible of $0.5 million and an aggregate cap of $5 million.

      In addition, pursuant to the Omnibus Agreement, KNOT agreed to indemnify the Partnership for any defects in title to certain assets contributed or sold to the Partnership and any failure to obtain, prior to April 15, 2013, certain consents and permits necessary to conduct the Partnership’s business, which liabilities arise within three years after the closing of the IPO on April 15, 2013.

      (c)
      Transactions with Management and Directors

      Trygve Seglem, the chairmanChairman of the Partnership’sPartnership's board of directors and the President and CEO of KNOT, controls Seglem Holding AS, which owns 100% of the equity interest in TSSI, which controls


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      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      18) Related Party Transactions (Continued)

      KOAS. TSSI owns 50% of the equity interest in KNOT. NYK, which owns 50% of the equity interest in KNOT, has management and administrative personnel on secondment to KNOT.

      See the footnotes to Note 18(a)—Related Party Transactions—Related Parties for a discussion of the allocation principles for KNOT’sKNOT's administrative costs, including management and administrative staff, included in the consolidated and combined carve-out statements of operations.

      Directors each receive a director fee of $40,000$50,000 per year. Members of the audit and conflicts committees each receive a committee fee of $5,000$12,000 and the Chairman of such committees receive an additional fee of $3,000 per year.

      (d)
      Amounts Due from and Due to Related Parties

      Balances with related parties consisted of the following:

      (U.S. Dollars in thousands)
       At December 31,
      2018
       At December 31,
      2017
       

      Balance Sheet:

             

      Trading balances due from KOAS

       $466 $24 

      Trading balances due from KNOT and affiliates

        675  547 

      Amount due from related parties

       $1,141 $571 

      Trading balances due to KOAS

       $629 $898 

      Trading balances due to KNOT and affiliates

        441  4,552 

      Amount due to related parties

       $1,070 $5,450 

              

      (U.S. Dollars in thousands)  At December 31,
      2015
         At December 31,
      2014
       

      Balance Sheets:

          

      Trading balances due from KOAS

        $10    $77  

      Trading balances due from KNOT and affiliates

         48     53  
        

       

       

         

       

       

       

      Amount due from related parties

        $58    $130  
        

       

       

         

       

       

       

      Trading balances due to KOAS

        $448    $423  

      Trading balances due to KNOT and affiliates

         400     205  
        

       

       

         

       

       

       

      Amount due to related parties

        $848    $628  
        

       

       

         

       

       

       

      Amounts due from and due to related parties are unsecured and intended to be settled in the ordinary course of business. The majority of these related party transactions relate to vessel management and other fees due to KNOT, KNOT Management, KOAS UK and KOAS .KOAS.

      (e)
      Trade accounts payables

      Trade accounts payables to related parties are included in total trade accounts payables in the balance sheet. The balances to related parties consisted of the following:

      (U.S. Dollars in thousands)  At December 31,
      2015
         At December 31,
      2014
       

      Balance Sheets:

          

      Trading balances due to KOAS

        $651    $792  

      Trading balances due to KNOT and affiliates

         360     241  
        

       

       

         

       

       

       

      Trade accounts payables to related parties

        $1,011    $1,033  
        

       

       

         

       

       

       

      (U.S. Dollars in thousands)
       At December 31,
      2018
       At December 31,
      2017
       

      Balance Sheet:

             

      Trading balances due to KOAS

       $381 $864 

      Trading balances due to KNOT and affiliates

        411  548 

      Trade accounts payables to related parties

       $792 $1,412 
      (f)
      Acquisitions from KNOT

      On AugustDecember 1, 2013,2016, the Partnership acquired KNOT’sKNOT's 100% interest in Knutsen Shuttle Tankers 1319 AS, the company that owns and operates theCarmenRaquel Knutsen. As part of the financing for the acquisition,purchase of theRaquel Knutsen, KNOT provided a Sellers’s credit in the form of a $10.5$25.0 million loan to KNOT Shuttle Tankers AS.Seller's Credit and Seller's Loan. The Sellers’sSeller's Credit and the Seller's Loan, including accrued interest was paidwere repaid in full in June 2014.January 2017. This acquisition was accounted for as an acquisition of a business.


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      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      18) Related Party Transactions (Continued)

      On June 30, 2014,March 1, 2017, the Partnership acquired KNOT’sKNOT's 100% interestsinterest in KnutsenKNOT Shuttle Tankers 1424 AS, the company that owns and operates theHildaTordis Knutsen, and Knutsen Shuttle Tankers 15 AS, the company that owns and operates theTorill Knutsen. These acquisitions were accounted for as acquisitions of businesses.

      On December 15, 2014, the Partnership acquired KNOT’s 100% interest in KNOT Shuttle Tankers 20 AS, the company that owns and operates theDan Cisne. As part of financing for the purchase of theDan Cisne,KNOT provided the $12.0 million Dan Cisne Seller’s Credit. The Dan Cisne Sellers’ Credit, including accrued interest, was paid in full in June 2015. This acquisition was accounted for as an acquisition of a business.

      On June 30, 2015,1, 2017, the Partnership acquired KNOT’sKNOT's 100% interest in KNOT Shuttle Tankers 2125 AS, the company that owns and operates theDan Sabia.Vigdis Knutsen. This acquisition was accounted for as an acquisition of a business.

      On October 15, 2015,September 30, 2017, the Partnership acquired KNOT’sKNOT's 100% interest in Knutsen NYKKNOT Shuttle Tankers 1626 AS, the company that owns and operates theIngrid Knutsen.Lena Knutsen. This acquisition was accounted for as an acquisition of a business.

              On December 15, 2017, the Partnership acquired KNOT's 100% interest in KNOT Shuttle Tankers 32 AS, the company that owns and operates theBrasil Knutsen. This acquisition was accounted for as an acquisition of a business.

              On March 1, 2018, the Partnership acquired KNOT's 100% interest in KNOT Shuttle Tankers 30 AS, the company that owns and operates theAnna Knutsen. This acquisition was accounted for as an acquisition of assets.

      The board of directors of the Partnership (the “Board”) and the conflicts committeeConflicts Committee of the Board (the “Conflicts Committee”)board approved the purchase price for each transaction described above. The Conflicts Committee retained a financial advisor to assist with its evaluation of each of the transactions. See Note—22 Business Note 21—Acquisitions.

      19) Commitments and Contingencies

        Assets Pledged

      As of December 31, 20152018 and 2014,2017, Vessels with a book value of $1,193$1,767 million and $1,022$1,723 million, respectively, were pledged as security held as guarantee for the Partnership’sPartnership's long-term debt and interest rate swap obligations. See Note 10—Derivative Instruments, Note 13—Vessels and Equipment and Note 16—Long-Term Debt.

        Claims and Legal Proceedings

      At the closing of the IPO on April 15, 2013, the probable liability and insurance claims were not transferred to the Partnership. In addition, there were no new insurance incidents during 2013. Therefore, for the year ended December 31, 2013, the probable liability and insurance claims were $nil.

      Under the Partnership’sPartnership's time charters, claims to reduce the hire rate payments can be made if the Vessel does not perform to certain specifications in the agreements. An accrual of $0.4 million for a probable claim was recorded for the year ended December 31, 2017. No accrual for possible claim was recorded for the yearyears ended December 31, 20152018 and 2014, while an immaterial claim was recorded for the year ended December 31, 2013 and which was subject to revision.2016.

      From time to time, the Partnership is involved in various claims and legal actions arising in the ordinary course of business. In the opinion of management, the ultimate disposition of these matters will not have a material adverse effect on the consolidated and combined carve-out financial position, results of operations or cash flows.

        Insurance

      The Partnership maintains insurance on all the Vessels to insure against marine and war risks, which include damage to or total loss of the Vessels, subject to deductible amounts that average $0.150$0.15 million per Vessel, and loss of hire.


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      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      19) Commitments and Contingencies (Continued)

      Under the loss of hire policies, the insurer will pay a compensation for the lost hire rate agreed in respect of each Vessel for each day, in excess of 14 deductible days, for the time that the Vessel is out of service as a result of damage, for a maximum of 180 days. In addition, the Partnership maintains protection and indemnity insurance, which covers third-party legal liabilities arising in connection with the Vessels’Vessels' activities, including, among other things, the injury or death of third-party persons, loss or damage to cargo, claims arising from collisions with other vessels and other damage to other third-party property, including pollution arising from oil or other substances. This insurance is unlimited, except for pollution, which is limited to $1 billion per vessel per incident. The protection and indemnity insurance is maintained through a protection and indemnity association, and as a member of the association, the Partnership may be required to pay amounts above budgeted premiums if the member claims exceed association reserves, subject to certain reinsured amounts. If the Partnership experiences multiple claims each with individual deductibles, losses due to risks that are not insured or claims for insured risks that are not paid, it could have a material adverse effect on the Partnership’sPartnership's results of operations and financial condition.

        20) Supplemental Cash Flows Information Raquel Knutsen

              In February 2017, theRaquel Knutsendamaged its propeller hub. As a result, the Vessel was off-hire from February 22, 2017 to May 15, 2017 for repairs. Under the Partnership's loss of hire policies, its insurer will pay the Partnership the hire rate agreed in respect of each vessel for each day, in excess of 14 deductible days, for the time that the Vessel is out of service as a result of damage, for a maximum of 180 days. For the year ended December 31, 2017, the Partnership received payments for loss of hire insurance of $3.4 million which was recorded as a component of total revenues since day rates are recovered under terms of the policy.

      The following supplemental information is provided related        In addition, for the year ended December 31, 2017, the Partnership recorded $3.9 million for recoveries up to the Consolidatedamount of loss under hull and Combined Carve-Out Statementsmachinery insurance for the repairs as a result of Cash Flowsthe propeller hub damage to theRaquel Knutsen. This is classified under vessel operating expense along with cost of the repairs of $4.2 million for the period, resulting in a net expense of $0.3 million. See Note 8—Insurance Proceeds.

        Carmen Knutsen

              During the fourth quarter of 2017, theCarmen Knutsen undertook her 5-year special drydocking survey. During dismantling for overhaul, a technical default with her controllable pitch propeller was found. As a result, the Vessel went to a different yard to complete the repair. Repairs were completed and the Vessel was back on hire on January 1, 2018. The additional off-hire and technical costs were subject to an insurance claim. Under its loss of hire insurance policies, the Partnership's insurer is expected to pay the hire rate agreed in respect of theCarmen Knutsen for each day in excess of 14 deductible days while the Vessel was off-hire as a result of the repairs of the controllable pitch propeller. For the years ended December 31, 2015, 20142018 and 2013:2017, the Partnership recorded $0.45 million and $1.75 million, respectively, for loss of hire which were recorded as a component of total revenues since day rates are recovered under the terms of the policy.

              For the year ended December 31, 2017, the Partnership recorded $2.40 million to vessel operating expense as an estimate of the cost of repairs of the controllable pitch propeller. During 2018, an additional repair cost of $0.15 million was recorded to vessel operating expenses. As of December 31,

         Year Ended December 31, 
      (U.S. Dollars in thousands)  2015   2014   2013 

      Non-cash investing and financing activities:

            

      Payable to owner and affiliates converted to equity

        $ —     $ —     $27,051  

      21)Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      19) Commitments and Contingencies (Continued)

      2018, the Partnership has received payments and recorded $2.25 million for hull and machinery repairs, resulting in a net expense of $0.30 million. See Note 8—Insurance Proceeds.

      20) Earnings per Unit and Cash Distributions

      The calculations of basic and diluted earnings per unit (1) are presented below:

         Year Ended December
      31,
         April 15th to
      December 31,
       
      (U.S. Dollars in thousands, except unit and per unit amounts)  2015   2014   2013 

      Post IPO net income attributable to the members of KNOT Offshore Partners LP

        $40,442    $27,392    $18,603  

      Less: Distributions (2)

         56,921     40,481     20,779  

      Over distributed earnings

         (16,479   (13,089   (2,176

      Over distributed earnings attributable to:

            

      Common unitholders

         (11,060   (7,916   (1,066

      Subordinated unitholders

         (5,087   (4,912   (1,066

      General Partner

         (332   (261   (44

      Weighted average units outstanding (basic and diluted) (in thousands):

            

      Common unitholders

         16,705     11,209     8,568  

      Subordinated unitholders

         8,568     8,568     8,568  

      General Partner

         516     404     350  

      Earnings per unit (basic and diluted):

            

      Common unitholders

        $1.499    $1.369    $1.063  

      Subordinated unitholders(3)

        $1.708    $1.343    $1.065  

         Year Ended December
      31,
         April 15th to
      December 31,
       
      (U.S. Dollars in thousands, except unit and per unit amounts)  2015   2014   2013 

      General Partner

        $ 1.487    $ 1.329    $ 1.063  

      Cash distributions declared and paid in the period per unit(4)

        $2.030    $1.795    $0.752  

      Subsequent event: Cash distributions declared and paid per unit relating to the period(5)

        $0.520    $0.490    $0.435  

      (1)Earnings per unit have been calculated in accordance with the cash distribution provisions set forth in the Partnership’s First Amended and Restated Agreement of Limited Partnership (the “Partnership Agreement”).
      (2)This refers to distributions made or to be made in relation to the period irrespective of the declaration and payment dates and based on the numbers of units outstanding at the record date. This includes cash distributions to the IDR holder (KNOT) for the years ended December 31, 2015 and 2014 of $2.1 million and $0.6 million, respectively and for the period April 15, 2013 to December 31, 2013 of $0.02 million.
      (3)This includes the net income attributable to the IDR holder. The IDRs generally may not be transferred by KNOT until March 31, 2018. The net income attributable to IDRs for the year ended December 31, 2015 and 2014 was $2.1 million and $0.6 million, respectively and for the period April 15 to December 31, 2013 was $0.02 million.
      (4)Refers to cash distributions declared and paid during the period.
      (5)Refers to cash distributions declared and paid subsequent to the fourth quarter.

       
       Year Ended December 31, 
      (U.S. Dollars in thousands, except per unit data)
       2018 2017 2016 

      Net income

       $82,165 $68,064 $61,102 

      Less: Series A Preferred unitholders' interest in net income

        7,200  5,253   

      Net income attributable to the unitholders of KNOT Offshore Partners LP

        74,965  62,811  61,102 

      Less: Distributions(2)

        72,136  67,171  61,528 

      Under (over) distributed earnings

        2,829  (4,360) (426)

      Under (over) distributed earnings attributable to:

                

      Common unitholders(3)

        2,777  (4,280) (417)

      Subordinated unitholders(3)

             

      General Partner

        52  (80) (9)

      Weighted average units outstanding (basic) (in thousands):

                

      Common unitholders

        32,694  30,068  23,917 

      Subordinated unitholders

            3,277 

      General Partner

        615  567  559 

      Weighted average units outstanding (diluted) (in thousands):

                

      Common unitholders

        36,370  32,804  23,917 

      Subordinated unitholders

            3,277 

      General Partner

        615  567  559 

      Earnings per unit (basic)

                

      Common unitholders(4)

       $2.251 $2.050 $2.291 

      Subordinated unitholders(4)

            1.542 

      General Partner

        2.251  2.046  2.248 

      Earnings per unit (diluted):

                

      Common unitholders(4)

       $2.217 $2.037 $2.291 

      Subordinated unitholders(4)

            1.542 

      General Partner

        2.251  2.046  2.248 

      Cash distributions declared and paid in the period per unit(5)

       $2.080 $2.080 $2.080 

      Subsequent event: Cash distributions declared and paid per unit relating to the period(6)

       $0.520 $0.520 $0.520 

      (1)
      Earnings per unit information is givenhave been calculated in accordance with the cash distribution provisions set forth in the Partnership Agreement.

      (2)
      This refers to distributions made or to be made in relation to the period irrespective of the declaration and payment dates and based on the numbers of units outstanding at the record date.

      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      20) Earnings per Unit and Cash Distributions (Continued)

        This includes cash distributions to the IDR holder (KNOT) for the period fromyears ended December 31, 2018, 2017 and 2016 of $2.8 million, $2.6 million and $2.4 million, respectively.

      (3)
      On May 18, 2016, all subordinated units converted into common units on a one-for-one basis.

      (4)
      Until May 18, 2016, the datenet income attributable to the IDR holder is included in calculation of the closing of the IPO (April 15, 2013). Earningsearnings per unit information hasfor subordinated unitholders, basic and diluted. The IDRs generally were not been presented for any periodtransferrable by KNOT prior to March 31, 2018. The net income attributable to IDRs for the IPO asyear ended December 31, 2018, 2017 and 2016 was $2.8 million, $2.6 million and $2.4 million, respectively.

      (5)
      Refers to cash distributions declared and paid during the information is not comparable dueperiod.

      (6)
      Refers to the change in the Partnership’s structurecash distributions declared and the basis of preparation of the financial statements as described in Note 2—Summary of Significant Accounting Policies.

      paid subsequent to December 31, 2018.

      As of December 31, 2015,2018, 73.5% of the public owned a 66.8%Partnership's total number of common units outstanding representing limited partner interest ininterests were held by the Partnershippublic (in the form of 18,536,22624,036,226 common units) and KNOT26.2% of such units were held directly owned a 30.9% limited partner interest in the Partnershipby KNOT (in the form of 8,567,500 subordinatedcommon units). In addition, KNOT, through its ownership of the General Partner, ownedheld a 2.01%1.85% general partner interest (in the form of 558,674615,117 general partner units) and a 0.3% limited partner interest (in the form of 90,368 common units).

      Earnings per unitunit—basic is determined by dividing net income, after deducting the amount of net income attributable to the Series A Preferred Units and the distribution paid or to be made in relation to the period by the weighted-average number of units outstanding during the applicable period.

      The General Partner’s, common unitholders’ and subordinated unitholders’computation of limited partners' interest in net income areper common unit—diluted assumes the issuance of common units for all potentially dilutive securities consisting of the Series A Preferred Units. Consequently, the net income attributable to limited partners' interest is exclusive of any distributions on the Series A Preferred Units. In addition, the weigthed average number of common units outstanding has been increased assuming the Series A Preferred Units have been converted to common units using the if-converted method. The computation of limited partners' interest in net income per common unit—diluted does not assume the issuance of Series A Preferred Units if the effect would be anti-dilutive.

              The General Partner's, common unitholders' and subordinated unitholders' interest in net income was calculated as if all net income was distributed according to the terms of the Partnership Agreement, regardless of whether those earnings would or could be distributed. The Partnership Agreement does not provide for the distribution of net income. Rather, it provides for the distribution of available cash, which is a contractually defined term that generally means all cash on hand at the end of each quarter less the amount of cash reserves established by the Partnership’sPartnership's board of directors (the "Board") to provide for the proper conduct of the Partnership’sPartnership's business, including reserves for maintenance and replacement capital expenditures, anticipated credit needs and anticipated capital requirements.requirements and any accumulated distributions on, or redemptions of, the Series A Preferred Units. In addition, KNOT, as the initial holder of all IDRs, has the right, at the time when there are no subordinated units outstanding and it has received incentive distributions at the highest level to which it is entitled (48.0% for each of the prior four consecutive fiscal quarters), to reset the initial cash target distribution levels at higher levels based on the distribution at the time of the exercise of the reset election. Unlike


      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      20) Earnings per Unit and Cash Distributions (Continued)

      available cash, net income is affected by non-cash items, such as depreciation and amortization, unrealized gains and losses on derivative instruments and unrealized foreign currency gains and losses.

      Under the Partnership Agreement, during the subordination period, the common units will have the right to receive distributions of available cash from operating surplus in an amount equal to the minimum quarterly distribution (the “MQD”) of $0.375 per unit per quarter, plus arrearages in the payment of the MQD on the common units from prior quarters, before any distributions of available cash from operating surplus may be made on the subordinated units.

      Distributions of available cash from operating surplus are to be made in the following manner for any quarter during the subordination period:

      first, 98.0% to the common unitholders, pro rata, and 2.0% to the General Partner, until each outstanding common unit has received the MQD for that quarter;

      second, 98.0% to the common unitholders, pro rata, and 2.0% to the General Partner, until each outstanding common unit has received an amount equal to any arrearages in payment of the MQD on the common units for prior quarters during the subordination period; and

      third, 98.0% to the subordinated unitholders, pro rata, and 2.0% to the General Partner until each subordinated unit has received the MQD for that quarter.

      In addition, KNOT currently holds all of the IDRs in the Partnership. IDRs represent the rights to receive an increasing percentage of quarterly distributions of available cash from operating surplus after the MQD and the target distribution levels have been achieved. If for any quarter during the subordination period:

      the Partnership has distributed available cash from operating surplus to the common and subordinated unitholders in an amount equal to the MQD; and

      the Partnership has distributed available cash from operating surplus on outstanding common units in an amount necessary to eliminate any cumulative arrearages in payment of the MQD,

      then, the Partnership will distribute any additional available cash from operating surplus for that quarter among the unitholders, the holders of the IDRs and the General Partner in the following manner:

      first, 98.0% to all unitholders, pro rata, and 2.0% to the General Partner, until each unitholder receives a total of $0.43125 per unit for that quarter (the “first target distribution”);

      second, 85.0% to all unitholders, pro rata, and 2.0% to the General Partner and 13.0% to the holders of the IDRs, pro rata, until each unitholder receives a total of $0.46875 per unit for that quarter (the “second target distribution”);

      third, 75.0% to all unitholders, pro rata, and 2.0% to the General Partner and 23.0% to the holders of the IDRs, pro rata, until each unitholder receives a total of $0.5625 per unit for that quarter (the “third target distribution”); and

      thereafter, 50.0% to all unitholders, pro rata, 2.0% to the General Partner and 48.0% to the holders of the IDRs, pro rata.

      Distributions of available cash from operating surplus for any quarter after the subordination period has ended are required to be made in the following manner:

        first, 98.15% to all common unitholders, pro rata, and 1.85% to the General Partner, until each outstanding common unit has received an amount equal to $0.375 (the "MQD") for that quarter;

        second, 98.15% to all common unitholders, pro rata, and 1.85% to the General Partner, until each outstanding common unit has received a total of $0.43125 (the "first target distribution") for that quarter;

        third, 85.15% to all common unitholders, pro rata, 1.85% to the General Partner, and 13% to the IDR holders, pro rata, until each outstanding common unit has received a total of $0.46875 (the "second target distribution") for that quarter;

        fourth, 75.15% to all common unitholders, pro rata, 1.85% to the General Partner, and 23% to the IDR holders, pro rata, until each outstanding common unit has received a total of $0.5625 (the "third target distribution") for that quarter; and

        thereafter, 50.15% to all common unitholders, pro rata, 1.85% to the General Partner, and 48% to the IDR holders, pro rata.

              

      first, 98% to all unitholders, pro rata, and 2.0% to the General Partner, until each outstanding unit has received an amount equal to the MQD for that quarter;

      second, 98% to all unitholders, pro rata, and 2.0% to the General Partner, until each outstanding unit receives a total of the first target distribution for that quarter;

      third, 85% to all unitholders, pro rata, 2.0% to the General Partner, and 13% to the IDR holders, pro rata, until each outstanding unit receives a total of the second target distribution for that quarter;

      fourth, 75% to all unitholders, pro rata, 2.0% to the General Partner, and 23.0% to the IDR holders, pro rata, until each outstanding unit receives a total of the third target distribution for that quarter; and

      thereafter, 50% to all unitholders, pro rata, 2.0% to the General Partner, and 48% to the IDR holders, pro rata.

      The percentage interests set forth above assumeassumed that the General Partner ownscontinues to own a 2.0%1.85% general partner interest and that the Partnership doeshas not issueissued additional classes of equity securities.

      22) Business21) Acquisitions

      The        During the years ended December 31, 2016 through 2018, the Partnership acquired from KNOT equity interests in certain subsidiaries which own and operate theCarmenRaquel Knutsen, theHildaTordis Knutsen, theVigdis Knutsen, theLena Knutsen, theTorillBrasil Knutsen, theDan Cisne, theDan Sabiaand theIngrid KnutsenAnna Knutsen..

      The Boardboard of directors of the Partnership and the Conflicts Committee approved the purchase price for each transaction. The Conflicts Committee retained a financial advisor to assist with its evaluation of the transactions. The cost of the fee paid to the financial advisor was divided equally between the Partnership and KNOT. Acquisition related costs of $0.1 million, $0.1$0.2 million and $0.1 million as of December 31, 2015, 20142018, 2017 and 2013,2016, respectively, were expensed as incurred.incurred under general and administrative expenses. The allocation of the purchase price to acquired identifiable assets was based on their estimated fair values at the date of acquisition. The purchase price of the each


      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      21) Acquisitions (Continued)

      acquisition has been allocated to the identifiable assets acquired. The details of each transaction are as follows:

      (U.S. Dollars in thousands)
       Final
      Anna Knutsen
      March 1,
      2018
       Final
      Brasil Knutsen
      December 15,
      2017
       Final
      Lena Knutsen
      September 30,
      2017
       

      Purchase consideration(1)

       $19,913 $5,764 $33,235 

      Less: Fair value of net assets acquired:

                

      Vessels and equipment(2)

        120,274  96,000  142,457 

      Cash

        4,537  5,217  470 

      Inventories

        257  146  243 

      Derivatives assets

        1,839    1,729 

      Others current assets

        111  125  193 

      Amounts due from related parties

        520  2  23,599 

      Long-term debt

        (84,217) (59,000) (111,068)

      Long-term debt from related parties

        (22,535)   (22,706)

      Deferred debt issuance costs

        1,228  618  867 

      Trade accounts payable

        (971) (154) (256)

      Accrued expenses

        (1,013) (1,185) (224)

      Prepaid charter and deferred revenue

            (1,758)

      Amounts due to related parties

        (117) (36,005) (186)

      Income tax payable

            (125)

      Subtotal

        19,913  5,764  33,235 

      Difference between the purchase price and fair value of net assets acquired

       $ $ $ 

      Table of Contents

      (U.S. Dollars in thousands)  Final
      Ingrid
      Knutsen
      October 15,
      2015
        Final
      Dan Sabia
      June 15,
      2015
        Final
      Dan Cisne
      December 15,
      2014
        Final
      Hilda Knutsen
      and
      Torill Knutsen
      June 30,
      2014
        Final
      Carmen
      Knutsen
      August 1,
      2013
       

      Purchase price (1)

        $12,863   $41,186   $18,230   $114,293   $55,772  

      Less: Fair value of net assets acquired:

            

      Vessel and equipment (2)

         115,000    103,389    103,400    335,000    145,000  

      Cash

         4,744    4,343    1,574    8,997    89  

      Inventories

         144    —      —      395    234  

      Other current assets

         188    25   —      1,939    108  

      Amounts due from related parties

         1    935   —      4    —    

      Long-term debt

         (84,275  (64,470  (82,164  (221,812  (89,125

      Long-term debt from related parties

         (20,253  —      —      —      —    

      Other long-term liabilities

         —      —      —      (4,774  —    

      Derivatives liabilities

         —      (802  (968  (348  —    

      Trade accounts payable

         (94  (4  (35  (390  (91

      Accrued expenses

         (1,555  (335  (825  (1,360  (387

      Prepaid charter and deferred revenue

         (762  (442)  —      (1,487  —    

      Amount due to related parties

         (275  (1,453  (2,752  (2,338  (56
        

       

       

        

       

       

        

       

       

        

       

       

        

       

       

       

      Subtotal

         12,863    41,186    18,230    113,826    55,772  
        

       

       

        

       

       

        

       

       

        

       

       

        

       

       

       

      Difference between the purchase price and fair value of net assets acquired

        $—     $—     $—     $467   $—    

      Goodwill (3)

         —      —      —      467    —    

      Difference between the purchase price and allocated values

        $—     $—     $—     $—     $—    
        

       

       

        

       

       

        

       

       

        

       

       

        

       

       

       

      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      (1)The purchase price comprises the following:

      21) Acquisitions (Continued)

      (U.S. Dollars in thousands)  Final 
      Ingrid
      Knutsen

      October 15,
      2015
         Final 
      Dan Sabia
      December 15,
      2014
         Final 
      Dan Cisne
      December 15,
      2014
        
      Final
      Hilda Knutsen
      and 
      Torill Knutsen

      June 30,
      2014
         Final 
      Carmen
      Knutsen

      August 1,
      2013
       

      Cash consideration paid to KNOT

        $10,472    $38,531    $8,836   $113,306    $45,423  

      Purchase price adjustments

         2,391     2,655     (2,606  987     —    

      Seller’s credit

         —       —       12,000    —       10,349  
        

       

       

         

       

       

         

       

       

        

       

       

         

       

       

       

      Purchase price

        $12,863    $41,186    $18,230   $114,293    $55,772  


      (2)Vessel and equipment includes allocation to dry docking for the following vessels (in thousands):Ingrid Knutsenof $1,263,Hilda Knutsen of $2,042,Torill Knutsen of $2,166 andCarmen Knutsen of $1,769. For theDan Sabia and theDan Cisne, $389 and $400 of the purchase price adjustments were allocated to the respective vessels.
      (3)The goodwill recognized in connection with the acquisitions of theHilda Knutsen and theTorill Knutsen is attributable primarily to the organization, including structure, systems, skills and abilities.
      (U.S. Dollars in thousands)
       Final
      Vigdis Knutsen
      June 1,
      2017
       Final
      Tordis Knutsen
      March 1,
      2017
       Final
      Raquel Knutsen
      December 1,
      2016
       

      Purchase consideration(1)

       $31,759 $32,983 $20,252 

      Less: Fair value of net assets acquired:

                

      Vessels and equipment(2)

        145,772  145,754  116,751 

      Intangibles: Above market time charter

        1,458  1,468   

      Cash

        3,438  609  7,146 

      Inventories

        190  129  307 

      Derivatives assets

        226  1,377  207 

      Others current assets

        128  1,348  183 

      Amounts due from related parties

        18,374  20,834  59 

      Long-term debt

        (114,411) (114,411) (79,950)

      Long-term debt from related parties

        (22,703) (22,960) (24,019)

      Deferred debt issuance costs

        928  795  1,059 

      Trade accounts payable

        (187) (106) (167)

      Accrued expenses

        (1,082) (503) (1,179)

      Amounts due to related parties

        (372) (1,351) (145)

      Income tax payable

             

      Subtotal

        31,759  32,983  20,252 

      Difference between the purchase price and fair value of net assets acquired

       $ $ $ 

      (1)
      The purchase consideration comprises the following:
      (U.S. Dollars in thousands)
       Final
      Anna Knutsen
      March 1,
      2018
       Final
      Brasil Knutsen
      December 15,
      2017
       Final
      Lena Knutsen
      September 30,
      2017
       

      Cash consideration paid to KNOT (from KNOT)

       $14,637 $2,383 $33,343 

      Purchase price adjustments

        5,276  3,381  (108)

      Purchase price

       $19,913 $5,764 $33,235 

      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      21) Acquisitions (Continued)


      (U.S. Dollars in thousands)
       Final
      Vigdis Knutsen
      June 1,
      2017
       Final
      Tordis Knutsen
      March 1,
      2017
       Final
      Raquel Knutsen
      December 1,
      2016
       

      Cash consideration paid to KNOT (from KNOT)

       $28,109 $31,242 $(12,019)

      Purchase price adjustments

        3,650  1,741  7,271 

      Seller's credit

            12,981 

      Seller's loan

            12,019 

      Purchase price

       $31,759 $32,983 $20,252 

      (2)
      Vessel and equipment includes allocation to drydocking for the following vessels (in thousands):Anna Knutsen of $2,329,Brasil Knutsen of $260,Lena Knutsen of $2,741,Vigdis Knutsen of $2,709,Tordis Knutsen of $2,753 andRaquel Knutsen of $1,663.

        IngridAnna Knutsen

      On October 15, 2015,March 1, 2018, the Partnership’sPartnership's wholly owned subsidiary, KNOT Shuttle Tankers AS, acquired KNOT’sKNOT's 100% interest in KNOT Shuttle Tankers 30 AS ("KNOT 30"), the company that owns and operates theAnna Knutsen. The purchase price for the vessel was $120.0 million, less $106.8 million of outstanding indebtedness, plus approximately $1.4 million for certain capitalized fees related to the financing of the vessel and plus other purchase price adjustments of $5.3 million.

              Following of adoption of ASU 2017-01, effective from January 1, 2018,Business Combinations: Clarifying the Definition of a Business, the Partnership accounted for this acquisition as an acquisition of an asset. The cost of the group of assets acquired in the asset acquisition has been allocated to the individual assets acquired or liabilities assumed based on their relative fair values.

        Brasil Knutsen

              On December 15, 2017, the Partnership's wholly owned subsidiary, KNOT Shuttle Tankers AS, acquired KNOT's 100% interest in KNOT Shuttle Tankers 32 AS ("KNOT 32"), the company that owns and operates theBrasil Knutsen. The purchase price was $96.0 million, less $59.0 million of outstanding indebtedness, less approximately $35.2 million for a loan owed by KNOT 32 to KNOT (the "Company Liquidity Loan"), plus approximately $0.6 million for certain capitalized fees related to the financing of theBrasil Knutsen, and plus $3.4 million of post-closing adjustments for working capital. The cash portion of the purchase price was financed with the proceeds from the Partnership's public offering of 3,000,000 common units which closed on November 9, 2017. See Note 22—Equity Offerings and Sale of Series A Preferred Units—Equity Offerings. The Partnership accounted for this acquisition as an acquisition of a business. The purchase price of the acquisition has been allocated to the identifiable assets acquired. The allocation of the purchase price to acquired identifiable assets was based on their fair values at the date of acquisition.

        Revenue and profit contributions

              TheBrasil Knutsen business contributed revenues of $0.7 million and net income of $0.3 million to the Partnership for the period from December 15, 2017 to December 31, 2017.


      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      21) Acquisitions (Continued)

        Pro forma financial information

              The table below shows comparative summarized consolidated pro forma financial information for the Partnership for the year ended December 31, 2017, giving effect to the Partnership's acquisition and financing of theBrasil Knutsen as if this acquisition had taken place on January 1, 2017. KNOT acquired theBrasil Knutsen from Chevron in July 2017 and the vessel was not operating on any contract at the time KNOT bought the vessel. From July 2017, theBrasil Knutsen operated on short term contracts until it commenced its time charter contract with Galp in November 2017.

      (U.S. Dollars in thousands)
       Unaudited
      Year Ended
      December 31, 2017
       

      Revenue

       $223,220 

      Net income

        64,034 

              Included in the pro forma adjustments is depreciation related to the purchase price allocations performed on the acquired identifiable assets as if the acquisition had taken place on January 1, 2017. In addition, the pro forma adjustments reflect changes in guarantors.

        Lena Knutsen

              On September 30, 2017, KNOT Shuttle Tankers AS acquired KNOT's 100% interest in KNOT Shuttle Tankers 26 AS ("KNOT 26"), the company that owns and operates theLena Knutsen. The purchase price was $142.0 million, less approximately $133.8 million of outstanding indebtedness, plus approximately $24.1 million for a receivable owed by KNOT to KNOT 26, plus approximately $1.0 million for certain capitalized fees related to the financing of theLena Knutsen and less $0.1 million of post-closing adjustments for working capital and interest rate swaps. The Partnership accounted for this acquisition as an acquisition of a business. The purchase price of the acquisition has been allocated to the identifiable assets acquired. The allocation of the purchase price to acquired identifiable assets was based on their fair values at the date of acquisition.

        Revenue and profit contributions

              TheLena Knutsen business contributed revenues of $5.2 million and net loss of $0.1 million to the Partnership for the period from September 30, 2017 to December 31, 2017.

        Pro forma financial information

              The table below shows comparative summarized consolidated pro forma financial information for the Partnership for the year ended December 31, 2017, giving effect to the Partnership's acquisition and financing of theLena Knutsen as if this acquisition had taken place on January 1, 2017.

      (U.S. Dollars in thousands)
       Unaudited
      Year Ended
      December 31, 2017
       

      Revenue

       $220,904 

      Net income

        62,999 

      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      21) Acquisitions (Continued)

              Included in the pro forma adjustments is depreciation related to the purchase price allocations performed on the acquired identifiable assets as if the acquisition had taken place on January 1, 2017. In addition, the pro forma adjustments reflect changes in guarantors as if the acquisition had taken place from the date of delivery of the vessel.

        Vigdis Knutsen

              On June 1, 2017, KNOT Shuttle Tankers AS, acquired KNOT's 100% interest in KNOT Shuttle Tankers 25 AS ("KNOT 25"), the company that owns and operates theVigdis Knutsen. The purchase price was $147.0 million, less approximately $137.7 million of outstanding indebtedness, plus approximately $17.9 million for a receivable owed by KNOT to KNOT 25, plus approximately $0.9 million for certain capitalized fees related to the financing of theVigdis Knutsen and plus $3.7 million of post-closing adjustments for working capital and interest rate swaps. The Partnership accounted for this acquisition as an acquisition of a business. The purchase price of the acquisition has been allocated to the identifiable assets acquired. The allocation of the purchase price to acquired identifiable assets was based on their fair values at the date of acquisition.

        Revenue and profit contributions

              TheVigdis Knutsen business contributed revenues of $11.8 million and net income of $2.6 million to the Partnership for the period from June 1, 2017 to December 31, 2017.

        Pro forma financial information

              The table below shows comparative summarized consolidated pro forma financial information for the Partnership for the year ended December 31, 2017, giving effect to the Partnership's acquisition and financing of theVigdis Knutsen as if this acquisition had taken place on January 1, 2017.

      (U.S. Dollars in thousands)
       Unaudited
      Year Ended
      December 31, 2017
       

      Revenue

       $222,354 

      Net income

        63,225 

              Included in the pro forma adjustments is depreciation related to the purchase price allocations performed on the acquired identifiable assets as if the acquisition had taken place on January 1, 2017. In addition, the pro forma adjustments reflect changes in guarantors and amortization of the above market time charter as if the acquisition had taken place from the date of delivery of the vessel.

        Tordis Knutsen

              On March 1, 2017, the Partnership's wholly owned subsidiary, KNOT Shuttle Tankers AS, acquired KNOT's 100% interest in KNOT Shuttle Tankers 24 AS ("KNOT 24"), the company that owns and operates theTordis Knutsen. The purchase price was $147.0 million, less approximately $137.7 million of outstanding indebtedness, plus approximately $21.1 million for a receivable owed by KNOT to KNOT 24, plus approximately $0.8 million for certain capitalized fees related to the financing of theTordis Knutsen and plus $1.7 million of post-closing adjustments for working capital and interest rate swaps. The cash portion of the purchase price was financed with the proceeds from the Partnership's sale and


      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      21) Acquisitions (Continued)

      issuance of 2,083,333 Series A Preferred Units which closed on February 2, 2017. See Note 23—Equity Offerings and Sale of Series A Preferred Units—Sale of Series A Preferred Units. The Partnership accounted for this acquisition as an acquisition of a business. The purchase price of the acquisition has been allocated to the identifiable assets acquired. The allocation of the purchase price to acquired identifiable assets was based on their fair values at the date of acquisition.

        Revenue and profit contributions

              TheTordis Knutsen business contributed revenues of $17.2 million and net income of $3.2 million to the Partnership for the period from March 1, 2017 to December 31, 2017.

        Pro forma financial information

              The table below shows comparative summarized consolidated pro forma financial information for the Partnership for the year ended December 31, 2017, giving effect to the Partnership's acquisition and financing of theTordis Knutsen as if this acquisition had taken place on January 1, 2017.

      (U.S. Dollars in thousands)
       Unaudited
      Year Ended
      December 31, 2017
       

      Revenue

       $221,198 

      Net income

        66,584 

              Included in the pro forma adjustments is depreciation related to the purchase price allocations performed on the acquired identifiable assets as if the acquisition had taken place on January 1, 2017. In addition, the pro forma adjustments reflect changes in guarantors and amortization of the above market time charter as if the acquisition had taken place from the date of delivery of the vessel.

        Raquel Knutsen

              On December 1, 2016, the Partnership's wholly owned subsidiary, KNOT Shuttle Tankers AS, acquired KNOT's 100% interest in Knutsen NYK Shuttle Tankers 1619 AS, the company that owns and operates theIngridRaquel Knutsen. The purchase price was $115.0$116.5 million, less assumed bank debt$103.5 million of $104.5 millionoutstanding indebtedness related to the vessel and plus other purchase price adjustments of $2.4$7.3 million. The Partnership accounted for this acquisition as an acquisition of a business. The purchase price of the acquisition has been allocated to the identifiable assets acquired. The allocation of the purchase price to acquired identifiable assets was based on their fair values at the date of acquisition.

        Revenue and profit contributions

      Since the        TheIngridRaquel Knutsenacquisition date, the business has contributed revenues of $3.6$1.5 million and net income of $1.0 million to the Partnership for the period from October 15, 2015 to December 31, 2015.

      Dan Sabia

      On June 15, 2015, the Partnership’s wholly owned subsidiary, KNOT Shuttle Tankers AS, acquired KNOT’s 100% interest in KNOT Shuttle Tankers 21 AS, the company that owns and operates theDan Sabia. The purchase price was $103.0 million, less assumed bank debt of $64.5 million plus other purchase price adjustments of $2.7 million. The cash portion of the purchase price was financed with the proceeds from the Partnership’s public offering of 5,000,000 common units which closed on June 2, 2015. See Note 23 —Equity Offerings. The Partnership accounted for this acquisition as an acquisition of a business. The purchase price of the acquisition has been allocated to the identifiable assets acquired. The allocation of the purchase price to acquired identifiable assets was based on their fair values at the date of acquisition.

      Revenue and profit contributions

      Since theDan Sabiaacquisition date, the business has contributed revenues of $5.5 million and net income of $2.2 million to the Partnership for the period from June 15, 2015 to December 31, 2015.

      Dan Cisne

      On December 15, 2014, the Partnership’s wholly owned subsidiary, KNOT Shuttle Tankers AS, acquired KNOT’s 100% interest in KNOT Shuttle Tankers 20 AS, the company that owns and operates theDan Cisne. The purchase price was $103.0 million; less assumed bank debt of $82.2 million less other purchase price adjustments of $2.6 million. The Partnership accounted for this acquisition as an acquisition of a business.The purchase price of the acquisition has been allocated to the identifiable assets acquired. The allocation of the purchase price to acquired identifiable assets was based on their fair values at the date of acquisition.

      Revenue and profit contributions

      Since theDan Cisneacquisition date, the business has contributed revenues of $0.5 million and net income of $0.9$0.2 million to the Partnership for the period from December 15, 20141, 2016 to December 31, 2014.2016.


      Table of Contents

      Hilda Knutsen & Torill Knutsen
      KNOT OFFSHORE PARTNERS LP

      On June 30, 2014, the Partnership’s wholly owned subsidiary, KNOT Shuttle Tankers AS, acquired KNOT’s 100% interest in: (i) Knutsen Shuttle Tankers 14 AS, the company that owns and operates theHilda Knutsen ; and (ii) Knutsen Shuttle Tankers 15 AS, the company that owns and operates theTorill Knutsen (the “Acquisitions”). The purchase price of theHilda Knutsen was $166.0 million, net of $109.6 million of outstanding indebtedness relatedNotes to the vessel. The purchase price of theTorill Knutsen was $169.0 million, net of $112.1 million of outstanding indebtedness related to the vessel. The cash portion of the purchase prices was financed with proceeds from the Partnership’s public offering of 4,600,000 common units which closed on June 27, 2014. See Note 23—Equity Offerings. The purchase prices were subsequently adjusted by a working capital adjustment of $1.0 million. The Partnership accounted for these acquisitions as the acquisitions of businesses. The purchase prices of the acquisitions were allocated to the identifiable assets acquired. The allocation of the purchase prices to acquired identifiable assets was based on their fair values at the date of acquisition.Consolidated Financial Statements (Continued)

      21) Acquisitions (Continued)

        Revenue and profit contributions

        Since theHilda Knutsenand theTorill Knutsen acquisition date, the businesses have contributed revenues of $23.5 million and net income of $10.0 million to the Partnership for the period from June 30, 2014 to December 31, 2014.

        Carmen Knutsen

        In August 2013, the Partnership’s wholly owned subsidiary, KNOT Shuttle Tankers AS, acquired KNOT’s 100% interest in Knutsen Shuttle Tankers 13 AS, the company that owns and operates theCarmen Knutsen. The purchase price was $145.0 million for the vessel, less assumed bank debt of $89.1 million and other purchase price adjustments of $0.1 million. The Partnership accounted for this acquisition as an acquisition of a business. The purchase price of the acquisition has been allocated to the identifiable assets acquired. The allocation of the purchase price to acquired identifiable assets was based on their fair values at the date of acquisition.

        Revenue and Profit Contributions

        Since theCarmen Knutsen acquisition date, the business contributed revenues of $8.4 million and net income of $2.5 million to the Partnership for the period from August 1, 2013 to December 31, 2013.

        Pro forma financial information – Ingrid Knutsen and Dan Sabia

      The table below shows comparative summarized consolidated pro forma financial information for the Partnership for the years ended December 31, 2015, 2014 and 2013, giving effect to the Partnership’s acquisition and financing of theDan Sabiaand theIngrid Knutsenas if these acquisitions had taken place on January 1, 2013 and January 1, 2014, respectively. TheIngrid Knutsen was under construction and not operational during the year ended December 31, 2013. As a result, the Partnership has evaluated that had the acquisition of theIngrid Knutsen been consummated as of January 1, 2013, pro forma revenue and net income for the year ended December 31, 2013 attributable to theIngrid Knutsen would be immaterial.

      (U.S. Dollars in thousands)  Unaudited 2015   Unaudited 2014   Unaudited 2013 

      Revenue

        $173,116    $138,702    $83,349  

      Net income

         43,810     30,395     18,482  

      Included in the pro forma adjustments are depreciation related to the purchase price allocation performed on the acquired identifiable assets as if the acquisitions had taken place on January 1, 2013 for theDan Sabia and January 1, 2014 for theIngrid Knutsen. In addition, the pro forma adjustments reflect new capital structure and changes in guarantors as if the acquisitions had taken place from the date of delivery of the vessels.

      Pro forma financial information – Hilda Knutsen, Torill Knutsen and Dan Cisne

      The table below shows comparative summarized consolidated pro forma financial information for the Partnership for the years ended December 31, 2014 and 2013, giving effect to the Partnership’s acquisition and financing of theDan Cisne,theHilda Knutsenand the Torill Knutsenas if these acquisitions had taken place on January 1, 2013. TheDan Cisne,theHilda Knutsenand the Torill Knutsenwere delivered September 14, 2011, August 5, 2013 and November 4, 2013, respectively.

      (U.S. Dollars in thousands)  Unaudited 2014   Unaudited 2013 

      Revenue

        $145,524    $106,616  

      Net income

        $36,621    $23,209  

      Included in the pro forma adjustments are depreciation related to the purchase price allocation performed on the acquired identifiable assets as if the acquisitions had taken place on January 1, 2013. In addition, the pro forma adjustments reflect new capital structure and changes in guarantors as if the acquisitions had taken place from date of delivery of the vessels.

      Pro forma financial information – Carmen Knutsen

      The table below shows comparative summarized consolidated pro forma financial information for the Partnership for the year ended December 31, 2013,2016, giving effect to the Partnership’sPartnership's acquisition and financing of theCarmenRaquel Knutsen as if this acquisition had taken place on January 1, 2013. TheCarmen Knutsenwas delivered on January 2, 2013.2016.

      (U.S. Dollars in thousands)
       Unaudited
      Year Ended
      December 31, 2016
       

      Revenue

       $190,229 

      Net income

        65,101 

      (U.S. Dollars in thousands)  Unaudited 2013 

      Revenue

        $84,037  

      Net income

        $16,695  

      Included in the pro forma adjustments areis depreciation related to the purchase price allocationallocations performed on the acquired identifiable assets as if the acquisition had taken place on January 1, 2013.2016. In addition, the pro forma adjustments include finance expenses related toreflect changes in guarantors and amortization.

      22) Equity Offerings and Sale of Series A Preferred Units

      Equity Offerings

      (U.S. Dollars in thousands)
       2018
      Offering
       January 2017
      Offering
       November 2017
      Offering
       Total 2017
      Offering
       2016
      Offering
       

      Gross proceeds received

       $ $56,125 $66,936(1)$123,061 $ 

      Less: Underwriters' discount

          925  660  1,585   

      Less: Offering expenses

          300  230  530   

      Net proceeds received

       $ $54,900 $66,046 $120,946 $ 

      (1)
      Includes the increased borrowings as if the acquisitions had taken place from date of delivery of the vessel.

      General Partner's 1.85% proportional capital contribution.

      23) Equity Offerings

      (U.S. Dollars in thousands)  2015   2014 

      Gross proceeds received (1)

        $121,224    $152,014  

      Less: Underwriters’ discount

         4,300     4,991  

      Less: Offering expenses

         293     340  
        

       

       

         

       

       

       

      Net proceeds received

         116,631     146,683  

      (1)Includes General Partner’s 2% proportional capital contribution

      On June 2, 2015,November 9, 2017, the Partnership sold 5,000,0003,000,000 common units in a public offering. In connection with the offering, the General Partner contributed a total of $1.2 million in order to maintain its 1.85% general partner interest in the Partnership. The total net proceeds from the offering and the related General Partner's contribution were $66.0 million. The Partnership used the net proceeds from the offering to fund the cash portion of the purchase price of theBrasil Knutsen and to repay $43.5 million of borrowings under the revolving credit facility.

              On January 10, 2017, the Partnership sold 2,500,000 common units, representing limited partner interests, in an underwritten public offering (the “June 2015 Offering”). In connection with the June 2015 Offering, the General Partner contributed a total of $2.4 million in order to maintain its 2% general partner interest in the Partnership.offering. The Partnership’sPartnership's total net proceeds from the June 2015 Offering and the related General Partner’s contributionoffering were $116.6$54.9 million.

      The Partnership used the net proceeds from the June 2015 Offeringoffering to fund the cash portion of the purchase price of the company that owns and operates theDan SabiaTordis Knutsen and to repay the Revolving Credit Facility, the $12.0 million Seller’s Creditdebt and $7.5 millionfor general partnership purposes.


      Table of the Dan Sabia Facility.Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      22) Equity Offerings and Sale of Series A Preferred Units (Continued)

      Sale of Series A Preferred units

      (U.S. Dollars in thousands)
       February 2017
      Series A
      Preferred Units
       June 2017
      Series A
      Preferred Units
       Total
      Series A
      Preferred Units
       

      Gross proceeds received

       $50,000 $40,000 $90,000 

      Less: Fee

        1,000  1,000  2,000 

      Less: Expenses

        386  150  536 

      Net proceeds received

       $48,614 $38,850 $87,464 

      On June 27, 2014, the Partnership sold 4,600,000 common units, representing limited partner interests, in an underwritten public offering and granted the underwriters a 30-day option to purchase an additional 690,000 common units. In connection with this closing, the General Partner contributed $2.7 million in order to maintain its 2% general partner interest in the Partnership.

      In connection with the partial exercises by the underwriters of their option to purchase additional common units, on July 14, 2014 and July 24, 2014,February 2, 2017, the Partnership issued and sold 150,000 common unitsin a private placement 2,083,333 Series A Preferred Units at a price of $24.00 per unit. After deducting fees and 490,000 common units, respectively, andexpenses, the General Partner made an additional $0.4 million aggregate capital contribution to the Partnership in order to maintain its 2% general partner interest in the Partnership. The Partnership’s total net proceeds from the public offering and the related General Partner’s contributionsale were $146.7 million as of December 31, 2014.$48.6 million. The Partnership used the net proceeds from the offering and related capital contribution by the General Partnersale to fund the cash portion of the purchase pricesprice of theHildaTordis Knutsen and theTorill Knutsento repay debt and for general partnership purposes.

      24)        On June 30, 2017, the Partnership (i) issued and sold in a second private placement 1,666,667 additional Series A Preferred Units at a price of $24.00 per unit and (ii) amended and restated its Partnership Agreement to make certain amendments to the terms of the Series A Preferred Units, including the 2,083,333 Series A Preferred Units issued on February 2, 2017. After deducting estimated fees and expenses, the net proceeds of the sale were $38.9 million. The Partnership used $30.0 million of the net proceeds to repay the revolving credit facility, which was drawn in connection with acquisition of theVigdis Knutsen.

              The Series A Preferred Units rank senior to the common units as to the payment of distributions and amounts payable upon liquidation, dissolution or winding up. The Series A Preferred Units have a liquidation preference of $24.00 per unit, plus any Series A unpaid cash distributions, plus all accrued but unpaid distributions on such Series A Preferred Unit with respect to the quarter in which the liquidation occurs to the date fixed for the payment of any amount upon liquidation. The Series A Preferred Units are entitled to cumulative distributions from their initial issuance date, with distributions being calculated at an annual rate of 8.0% on the stated liquidation preference and payable quarterly in arrears within 45 days after the end of each quarter, when, as and if declared by the Board.

              The Series A Preferred Units are generally convertible, at the option of the holders of the Series A Preferred Units, into common units commencing on February 2, 2019 at the then applicable conversion rate. The conversion rate will be subject to adjustment under certain circumstances. In addition, the conversion rate will be redetermined on a quarterly basis, such that the conversion rate will be equal to $24.00 (the "Issue Price") divided by the product of (x) the book value per common unit at the end of the immediately preceding quarter (pro-forma for per unit cash distributions payable with respect to such quarter) multiplied by (y) the quotient of (i) the Issue Price divided by (ii) the book value per common unit on February 2, 2017. In addition, the Partnership may redeem the Series A Preferred Units at any time between February 2, 2019 and February 2, 2027 at the redemption price specified in the Partnership Agreement, provided, however, that upon notice from the Partnership to the holders of Series A Preferred Units of its intent to redeem, such holders may elect, instead, to convert their Series A Preferred Units into common units at the then applicable conversion rate. For the year ended December 31, 2018, the possible conversion of the Series A Preferred Units into


      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      22) Equity Offerings and Sale of Series A Preferred Units (Continued)

      common units are included in the calculation of the diluted earnings per unit. See Note 20—Earnings per Unit and Cash Distributions.

              Upon a change of control of the Partnership, the holders of Series A Preferred Units will have the right to require cash redemption at 100% of the Issue Price. In addition, the holders of Series A Preferred Units will have the right to cause the Partnership to redeem the Series A Preferred Units on February 2, 2027 in, at the option of the Partnership, (i) cash at a price equal to 70% of the Issue Price or (ii) common units such that each Series A Preferred Unit receives common units worth 80% of the Issue Price (based on the volume-weighted average trading price, as adjusted for splits, combinations and other similar transactions, of the common units as reported on the NYSE for the 30 trading day period ending on the fifth trading day immediately prior to the redemption date) plus any accrued and unpaid distributions. In addition, at any time following February 2, 2019 and subject to certain conditions, the Partnership will have the right to convert the Series A Preferred Units into common units at the then applicable conversion rate if the aggregate market value (calculated as set forth in the partnership agreement) of the common units into which the then outstanding Series A Preferred Units are convertible, based on the then applicable conversion rate, is greater than 130% of the aggregate Issue Price of the then outstanding Series A Preferred Units.

              The Series A Preferred Units have voting rights that are identical to the voting rights of the common units, except they do not have any right to nominate, appoint or elect any of the directors of the Board, except whenever distributions payable on the Series A Preferred Units have not been declared and paid for four consecutive quarters (a "Trigger Event"). Upon a Trigger Event, holders of Series A Preferred Units, together with the holders of any other series of preferred units upon which like rights have been conferred and are exercisable, may replace one of the members of the Board appointed by the General Partner with a person nominated by such holders, such nominee to serve until all accrued and unpaid distributions on the preferred units have been paid. The Series A Preferred Units are entitled to vote with the common units as a single class so that the Series A Preferred Units are entitled to one vote for each common unit into which the Series A Preferred Units are convertible at the time of voting.

              For additional information about the Series A Preferred Units, please read the Partnership's Report on Form 8-A/A filed with the Securities and Exchange Commission on June 30, 2017.


      Table of Contents


      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      23) Unit Activity

      The following table shows the movement in the number of common units, subordinated units and general partner units during the years ended December 31, 2015, 20142018, 2017 and 2013:2016:

      (in units)
      Common
      Units
      Subordinated
      Units
      General Partner
      Units
      Convertible Preferred
      Units

      December 31, 2016

      27,194,094558,674

      January 6, 2017: Public offering

      2,500,000

      February 2, 2017: Sale of Series A Preferred Units

      2,083,333

      June 30, 2017: Sale of Series A Preferred Units

      1,666,667

      November 8, 2017: Public offering

      3,000,00056,443

      December 31, 2017

      32,694,094615,1173,750,000

      December 31, 2018

      32,694,094615,1173,750,000

      (in units)  Common Units   Subordinated
      Units
         General Partner
      Units
       

      April 2013, Initial Public Offering (IPO)

         8,567,500     8,567,500     349,694  

      December 31, 2013

         8,567,500     8,567,500     349,694  

      June 2014

         4,600,000     —      93,877  

      July 2014

         640,000     —      13,062  

      December 31, 2014

         13,807,500     8,567,500     456,633  

      June 2015

         5,000,000     —      102,041  

      Repurchase program

         (180,906   —      —   

      December 31, 2015

         18,626,594     8,567,500     558,674  

      On        Originally approved on August 12, 2015, the Partnership’s board of directorscommon unit purchase program authorized a program for the Partnership to repurchase up to 666,667 of its common units. The board of directors of the General Partner concurrently authorizedunits and the General Partner to purchase up to 333,333 common units of the Partnership. On August 10, 2016, the boards of directors of the Partnership and the General Partner each authorized an extension of the common unit purchase program to August 31, 2017. On August 9, 2017, the boards of directors of the Partnership and the General Partner authorized a further extension of the program to August 31, 2018. As of December 31, 2015, the Partnership and the General Partner had purchased 180,906 and 90,368 common units, respectively, pursuant to the program at an average purchase price of $12.71 per unit. No additional common units had been purchased by the Partnership or the General Partner as of the expiration date of the program on August 31, 2018.

      All purchases will beare made pursuant to a single program and will beare allocated approximately two-thirds to the Partnership and one-third to the General Partner. The program will conclude by August 31, 2016. There is no obligation to purchase any specific number of common units and the program may be modified, suspended, extended or terminated at any time. Common units repurchased by the Partnership under the program have been cancelled.

      As        The subordination period for the 8,567,500 subordinated units ended on May 18, 2016. All of December 31, 2015, the Partnership and the General Partner had purchased 180,906 and 90,368subordinated units, which were owned by KNOT, converted to common units respectively, at an average purchase price of $12.71 per unit.on a one-for-one basis.

      25)24) Subsequent Events

      The Partnership has evaluated subsequent events from the balance sheet date through March 18, 2016,April 10, 2019, the date at which the audited consolidated and combined carve-out financial statements were available to be issued, and determined that there are no other items to disclose, except as follows:

      On February 15, 2016,14, 2019, the Partnership paid a quarterly cash distribution of $0.52 per common unit with respect to the quarter ended December 31, 2015.2018. The aggregate amount of the paid distribution was $15.0was 18.0 million.

      On February 14, 2019, the Partnership also paid a cash distribution to holders of Series A Preferred Units with respect to the quarter ended December 31, 2018 in an aggregate amount equal to $1.8 million.

              On November 29, 2018, the Partnership announced that John Costain has decided to resign as Chief Executive Officer and Chief Financial Officer of the Partnership as of May 31, 2019 in order to


      Table of Contents

      F-47
      KNOT OFFSHORE PARTNERS LP

      Notes to Consolidated Financial Statements (Continued)

      24) Subsequent Events (Continued)

      pursue other interests. The Partnership's Board has approved the appointment of Gary Chapman as the new Chief Executive Officer and Chief Financial Officer of the Partnership commencing June 1, 2019.

              On December 17, 2018, the Partnership's subsidiary that owns theWindsor Knutsen and Shell agreed to suspend the vessel's time charter contract for a minimum of 10 months and a maximum of 12 months. The suspension period commenced March 4, 2019. During the suspension period, theWindsor Knutsen will operate under a time charter contract with Knutsen Shuttle Tankers Pool AS, on the same terms as the existing time charter contract with Shell.