UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON D.C. 20549

FORM 20-F

OR

For the fiscal year ended December 31, 20122015

OR

OR

Commission file number 000-51559001-36797

STEALTHGAS INC.

(Exact name of Registrant as specified in its charter)

Not applicable

(Translation of Registrant’s Name into English)

Republic of the Marshall Islands

(Jurisdiction of incorporation or organization)

331 Kifissias Avenue, Erithrea 14561 Athens, Greece

(Address of principal executive offices)

Konstantinos SistovarisHarry N. Vafias

331 Kifissias Avenue, Erithrea 14561, Athens, Greece

Telephone: (011) (30) (210) 625 0001

Facsimile: (011) (30) (210) 625 0018

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

SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:

SECURITIES 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

The number of outstanding shares of each of the issuer’s classes of capital or common stock as of December 31, 20122015 was:

40,517,676 shares of Common Stock, par value $0.01 per share            20,627,329 shares

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  ¨ Yes  x 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.  ¨ Yes  x 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.  x Yes  ¨ 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).  x Yes  ¨ No

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

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

If “Other” has been checked in response to the previous question, indicate by check mark which financial statement item the registrant has elected to follow.  ¨ Item 17  ¨ 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).  ¨ Yes  x No

TABLE OF CONTENTS

FORWARD-LOOKING INFORMATION

This Annual Report on Form 20-F includes assumptions, expectations, projections, intentions and beliefs about future events. These statements are intended as “forward-looking statements.” We caution that assumptions, expectations, projections, intentions and beliefs about future events may and often do vary from actual results and the differences can be material.

All statements in this document that are not statements of historical fact are forward-looking statements as defined in Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Forward-looking statements include, but are not limited to, such matters as:

When used in this document, the words “anticipate,” “believe,” “intend,” “estimate,” “project,” “forecast,” “plan,” “potential,” “may,” “should” and “expect” reflect forward-looking statements. Such statements reflect our current views and assumptions and all forward-looking statements are subject to various risks and uncertainties that could cause actual results to differ materially from expectations. The factors that could affect our future financial results are discussed more fully under “Item 3. Key Information—Risk Factors,” as well as elsewhere in this Annual Report on Form 20-F and in our other filings with the U.S. Securities and Exchange Commission (“SEC”). We caution readers of this Annual Report not to place undue reliance on these forward-looking statements, which speak only as of their dates. We undertake no obligation to publicly update or revise any forward-looking statements.

PART I

StealthGas Inc. is a Marshall Islands company that is referred to in this Annual Report on Form 20-F, together with its subsidiaries, as “StealthGas,” the “Company,” “we,” “us,” or “our.” This Annual Report should be read in conjunction with our consolidated financial statements and the accompanying notes thereto, which are included in Item 18 to this Annual Report.

We use the term cubic meters, or “cbm,” in describing the size of our liquefied petroleum gas (“LPG”) carriers and the term deadweight tons, or “dwt,” in describing the size of our product carriers and crude oil tanker. We use the term “small” to describe LPG carriers of between 3,000 and 8,000 cbm in capacity. Unless otherwise indicated, all references to currency amounts in this annual report are in U.S. dollars.

Not Applicable.

Not Applicable.

A. Selected Consolidated Financial Data

The following table sets forth our selected consolidated financial data and other operating data shown in U.S. dollars, other than share and fleet data. The table should be read together with “Item 5. Operating and Financial Review and Prospects.”

Our audited and consolidated statements of income and comprehensive income, stockholder’s equity and cash flows for the years ended December 31, 2010, 2011,2013, 2014, and 20122015 and the audited consolidated balance sheets as of December 31, 20112014 and 2012,2015, together with the notes thereto, are included in “Item 18. Financial Statements” and should be read in their entirety. The selected consolidated income statement data for the years ended December 31, 2008, 20092011 and 2012 and the selected balance sheet data as of December 31, 2008, 20092011, 2012 and 20102013 have been derived from our audited consolidated financial statements which are not included in “Item 18. Financial Statements.”Statements”.

(2)	Our total voyage days for our fleet reflect the total days the vessels we operated were in our possession for the relevant periods, net of off-hire days associated with major repairs, drydockings or special or intermediate surveys.

(3)	Total time and bareboat charter days for fleet are the number of voyage days the vessels in our fleet operated on time or bareboat charters for the relevant period.

(4)	Total spot market charter days for fleet are the number of voyage days the vessels in our fleet operated on spot market charters for the relevant period.

(5)	Total calendar days are the total days the vessels we operated were in our possession for the relevant period including off-hire days associated with major repairs, drydockings or special or intermediate surveys.

(6)	Fleet utilization is the percentage of time that our vessels were available for revenue generating voyage days, and is determined by dividing voyage days by fleet calendar days for the relevant period.

(7)	Fleet operational utilization is the percentage of time that our vessels generated revenue, and is determined by dividing voyage days (excluding commercially idle days) by fleet calendar days for the relevant period.

(8)

Adjusted average charter rate is a measure of the average daily revenue performance of a vessel on a per voyage basis. We determine the adjusted average charter rate by dividing voyage revenues (net of voyage expenses) by voyage days for the relevant time period. Voyage expenses primarily consist of port, canal and fuel costs that are unique to a particular voyage and are payable by us under a spot charter (which would otherwise be paid by the charterer under a time or bareboat charter contract), as well as commissions. Charter equivalent revenues is aand adjusted average charter rate are non-GAAP measuremeasures which providesprovide additional meaningful information in conjunction with voyage revenues, the most directly comparable GAAP measure, because it assiststhey assist Company management in making decisions regarding the deployment and use of its vessels and in evaluating their financial performance. It isThey are also a standard shipping industry performance measuremeasures used primarily to compare period-to-period changes in a shipping company’s performance despite changes in the mix of charter types (i.e., spot charters or time charters, but not bareboat charters) under which the vessels may be employed between the periods. Under bareboat charters, we are not responsible for either voyage expenses, unlike spot charters, or vessel operating expenses, unlike spot charters and time charters; however, no adjustment for such reduced vessel operating expenses for our vessels deployed under bareboat charters is reflected in the adjusted average charter rate. Reconciliation of charter equivalent revenues as reflected in the consolidated statements of income and calculation of adjusted average charter rate follow:

B. Capitalization and Indebtedness

Not applicable

C. Reasons For the Offer and Use of Proceeds

Not Applicable.

D. Risk Factors

Risks Related To Our Industry

The cyclical nature of the demand for LPG transportation may lead to significant changes in our chartering and vessel utilization, which may adversely affect our revenues, profitability and financial position.

Historically, the international LPG carrier market has been cyclical with attendant volatility in profitability, charter rates and vessel values. The degree of charter rate volatility among different types of gas carriers has varied widely. Because many factors influencing the supply of, and demand for, vessel capacity are unpredictable, the timing, direction and degree of changes in the international gas carrier market are also not predictable. After increasing throughout 2007 and into 2008,improving from low levels in late 2011 until the third quarter of 2014, charter rates for handysizesmall LPG carriers have since declined significantly, largely due to the fall in the second half of 2008 and in 2009 as a result of slowdown in the world economy. Although there has been some improvement since 2011, rates remain below levels reached in 2007 and 2008 and could again decline.oil prices. If charter rates decline further, our earnings may decrease, particularly with respect to our vessels deployed in the spot market or those vessels whose charters will be subject to renewal during 2013,2016, as they may not be extended or renewed on favorable terms when compared to the terms of the expiring charters. As of April 1, 2013, eight2016, of our 3351 LPG carriercarriers in the water, including two vessels that are chartered in, 13 were deployed in the spot market while another four are15 were scheduled to complete their existing charters within 2013.during 2016. In addition, we expect to take delivery of three secondhandone newbuilding LPG carrierscarrier in May 2013the remainder of 2016, for which we have arranged an 18-month time charter and sixfour newbuilding LPG carriers in 2014 and 20152017 for which we have not yet arranged employment. Any of the foregoing factors could have an adverse effect on our revenues, profitability, liquidity, cash flow and financial position.

Future growth in the demand for LPG carriers and charter rates will depend on economic growth in the world economy and demand for LPG product transportation that exceeds the capacity of the growing worldwide LPG carrier fleet’s ability to match it. We believe that the future growth in demand for LPG carriers and the charter rate levels for LPG carriers will depend primarily upon the supply and demand for LPG, particularly in the economies of China, Japan, India and Southeast Asia, as well as U.S. shale production, and upon seasonal and regional changes in demand and changes to the capacity of the world fleet. The capacity of the world shipping fleet appears likely to increase in the near term, although growth in the 3,000 to 8,000 cbm segment of handysizesmall LPG carriers is expected to be relatively limited in 2013. Economic2016. Oil prices may remain low and economic growth may be limited in the near term, and possibly for an extended period, as a result of the current global economic conditions, which could have an adverse effect on our business and results of operations.

The factors affecting the supply and demand for LPG carriers are outside of our control, and the nature, timing and degree of changes in industry conditions are unpredictable.

The factors that influence demand for our vessels include:

The factors that influence the supply of vessel capacity include:

A significant decline in demand for the seaborne transport of LPG or a significant increase in the supply of LPG carrier capacity without a corresponding growth in LPG carrier demand could cause a significant decline in prevailing charter rates, which could materially adversely affect our financial condition and operating results and cash flow.

Various economic factors could materially adversely affect our business, financial position and results of operations, as well as our future prospects.

The global economy and the volume of world trade have remained relatively weak since the severe decline in the latter part of 2008 and in 2009. Recovery of the global economy is proceeding at varying speeds across regions and remains subject to downside risks, including fragility of advanced economies and concerns over sovereign debt defaults by European Union member countries such as Greece. More specifically, some LPG products we carry are used in cyclical businesses, such as the manufacturing of plastics and in the chemical industry, that were adversely affected by the recent economic downturn and, accordingly, continued weakness and reduction in demand in those industries could adversely affect the LPG carrier industry. In particular, an adverse change in economic conditions affecting China, Japan, India or Southeast Asia generally could have a negative effect on the demand for LPG products, thereby adversely affecting our business, financial position and results of operations, as well as our future prospects. In particular, in recent years China and India have been among the world’s fastest growing economies in terms of gross domestic product.product, but have shown signs of slowing growth recently, particularly in China where concerns over a potentially significant slowdown in growth have emerged. Moreover, any further deterioration in the economy of the United States or the European Union, including due tothe impact of the European sovereign debt and banking crisis, may further adversely affect economic growth in Asia. In addition, as a result of the ongoing economic slump in Greece resulting from the sovereign debt crisis and the related austerity measures implemented by the Greek government, our operations in Greece may be subjected to new regulations that may require us to incur new or additional compliance or other administrative costs and may require that we pay to the Greek government new taxes or other fees. Furthermore, the change in the Greek government and potential shift in its policies may undermine Greece’s political and economic stability, which may adversely affect our operations and those of our manager located in Greece. We also face the risk that strikes, work stoppages, civil unrest and violence, as well as capital controls implemented in 2015 within Greece, may disrupt our shore side operations and those of our manager located in Greece. Our business, financial position and results of operations, as well as our future prospects, could likely be materially and adversely affected by adverse economic conditions in any of these countries or regions.

If the demand for LPG products and LPG shipping does not grow, or decreases, our business, results of operations and financial condition could be adversely affected.

Our growth, which depends on growth in the supply and demand for LPG products and LPG shipping, was adversely affected by the sharp decrease in world trade and the global economy experienced in the latter part of 2008 and in 2009. Although the global economy has slightly recovered, somewhat, it remains relatively weak in many parts of the world with emerging concern regarding a renewed slowdown in recent months and world and regional demand for LPG products and LPG shipping can be adversely affected by a number of factors, such as:

Reduced demand for LPG products and LPG shipping would have an adverse effect on our future growth and would harm our business, results of operations and financial condition.

Our operating results are subject to seasonal fluctuations, which could affect our operating results and the amount of available cash with which we can pay dividends.

We operate our LPG carriers in markets that have historically exhibited seasonal variations in demand and, as a result, in charter hire rates. This seasonality may result in quarter-to-quarter volatility in our operating results, which could affect the amount of dividends that we may pay to our stockholders from quarter-to-quarter. The LPG carrier market is typically stronger in the fall and winter months in anticipation of increased consumption of propane and butane for heating during the winter months. In addition, unpredictable weather patterns in these months tend to disrupt vessel scheduling and supplies of certain commodities. As a result, our revenues may be stronger in fiscal quarters ended December 31 and March 31, and conversely, our revenues may be weaker during the fiscal quarters ended June 30 and September 30. This seasonality could materially affect our quarterly operating results.

Our revenues, operations and future growth could be adversely affected by a decrease in supply of liquefied natural gas, or natural gas.

In recent years, there has been a strong supply of natural gas and an increase in the construction of plants and projects involving natural gas, of which LPG is a byproduct. Several of these projects, however, have experienced delays in their completion for various reasons and thus the expected increase in the supply of LPG from these projects may be delayed significantly. The recent declines in oil prices and natural gas could exacerbate these dynamics. If the supply of natural gas decreases, we may see a concurrent reduction in the production of LPG, and resulting in lesser demand and lower charter rates for our vessels, which could ultimately have a material adverse impact on our revenues, operations and future growth.

The product carrier and crude oil tanker shipping sectors are cyclical, and have been at depressed levels, which may lead to lower charter rates and lower vessel values.values.

The medium range type product carrier and crude oil tanker shipping sectors are cyclical with attendant volatility in charter rates and vessel values. AlthoughThe first charter arrangement of our product carriers is scheduled to expire in 2016, the second arrangement is scheduled to expire in 2017, while the third charter arrangementsarrangement of our product carriers is scheduled to expire in 2019. The charter for our three product carriers arecrude oil tanker is not scheduled to expire until 2016, and 2015 in the case of our crude oil tanker, ifFebruary 2018. If prevailing market conditions in these sectors, which declined sharply in 2008 and 2009 and have remained weak before recovering since the fourth quarter of 2014 are depressed at such times as these charters expire or otherwise are terminated, we may not be able to renew or replace existing charters for these vessels at the same or similar rates. If we were required to enter into a charter when charter hire rates are low, our results of operations could be adversely affected. For the year ended December 31, 2012, charterCharter rates in the product carrier sector, and particularly the crude oil tanker sectors declined significantly, andsector, have continued to be weak inincreased from depressed levels since the firstfourth quarter of 2013.2014, however, the sustainability of this recovery is uncertain and rates could decline again.

An over-supply of ships may lead to a reduction in charter rates, vessel values and profitability.

The market supply of LPG carriers and tankers is affected by a number of factors, such as supply and demand for LPG, natural gas and other energy resources, including oil and petroleum products, supply and demand for seaborne transportation of such energy resources, and the current and expected purchase orders for newbuildings. If the capacity of new LPG carriers and tankers delivered exceeds the capacity of such vessel types being scrapped and converted to non-trading vessels, global fleet capacity will increase. If the supply of LPG carrier or tanker capacity increases, and if the demand for the capacity of such vessel types decreases, or does not increase correspondingly, charter rates could materially decline. A reduction in charter rates and the value of our vessels may have a material adverse effect on our results of operations.

The market values of our vessels which have declined, may remain at currentlyrelatively low or lower, levels for a prolonged period and over time may fluctuate significantly. When the market values of our vessels are low, we may incur a loss on sale of a vessel or record an impairment charge, as we did in 2015 and 2014, which may adversely affect our earnings and possibly lead to defaults under our loan agreements.

Due to the sharp decline in the world economy and related decreases in charter rates, theThe market value of our vessels particularly the product carriersmay fluctuate significantly, and crude oil tanker, declinedthese experienced significant declines during the two years ended December 31,

2012.economic crisis. Although small LPG carrier values recovered from 2011 to the third quarter of 2014, before declining again, and tanker rates remained low until recovering since the fourth quarter of 2014, vessel values remain well below the highs reached in 2007 and 2008. The market values of our vessels may remain at currently low, or be depressed to even lower, values for a prolonged period of time and, as was the case with the recent decreases in value, are subject to the potential significant fluctuations depending on a number of factors including:

In 2015, we recognized an impairment loss of $8.2 million relating to three of our older LPG vessels whose market values had declined below their carrying values. In 2014 we recognized an impairment loss of $6.2

million resulting from our decision to sell two of the older LPG carriers in our fleet for demolition. If we sell vessels at a time when vessel prices have fallen, and before we have recorded an impairment adjustment to our financial statements, the sale may be for less than the vessel’s carrying value in our financial statements, resulting in a loss and reduction in earnings. Furthermore, if vessel values experience significant further declines, we may have to record an impairment adjustment in our financial statements, which could adversely affectwould also result in a reduction in our financial results. For instance, in 2011, we sold four vessels and recorded a loss of $5.7 million, while in 2012 we sold two vessels and recorded a gain of $1.4 million.earnings. If the market value of our fleet declines, we may not be in compliance with certain provisions of our existing loan agreements and we may not be able to refinance our debt or obtain additional financing or, if reinstated, pay dividends. If we are unable to pledge additional collateral, our lenders could accelerate our debt and foreclose on our fleet. The loss of our vessels would mean we could not run our business.

Technological innovation could reduce our charterhirecharter hire income and the value of our vessels.

The charterhirecharter hire rates and the value and operational life of a vessel are determined by a number of factors including the vessel’s efficiency, operational flexibility and physical life. Efficiency includes speed, fuel economy and the ability to load and discharge cargo quickly. Flexibility includes the ability to enter harbors, utilize related docking facilities and pass through canals and straits. The length of a vessel’s physical life is related to its original design and construction, its maintenance and the impact of the stress of operations. If new LPG carriers or tankers are built that are more efficient or more flexible or have longer physical lives than our vessels, competition from these more technologically advanced vessels could adversely affect the amount of charterhirecharter hire payments we receive for our vessels, and the resale value of our vessels could significantly decrease. As a result,Consequently, our results of operations and financial condition could be adversely affected.

Changes in fuel, or bunker, prices may adversely affect profits.

While we do not bear the cost of fuel or bunkers under time and bareboat charters, fuel is a significant expense in our shipping operations when vessels are deployed under spot charters. Changes in the price of fuel may adversely affect our profitability. The price and supply of fuel is unpredictable and fluctuates based on events outside our control, including geopolitical developments, supply and demand for oil and gas, actions by the OPEC (“Organization Of Petroleum Exporting Countries”) and other oil and gas producers, war and unrest in oil producing countries and regions, regional production patterns and environmental concerns. Further,Furthermore fuel, which has been less expensive since the price of oil began declining in the third quarter of 2014, may become much more expensive in the future, which may reduce profitability.

We are subject to regulation and liability under environmental laws that could require significant expenditures and affect our financial conditions and results of operations.

Our business and the operation of our vessels are materially affected by government regulation in the form of international conventions and national, state and local laws and regulations in force in the jurisdictions in which the vessels operate, as well as in the country or countries of their registration. These regulations include, but are not limited to the U.S. Oil Pollution Act of 1990, or OPA, that establishes an extensive regulatory and liability regime for the protection and cleanup of the environment from oil spills and applies to any discharges of oil from a vessel, including discharges of fuel oil (bunkers) and lubricants, the U.S. Clean Air Act, U.S. Clean Water Act and the U.S. Marine Transportation Security Act of 2002, and regulations of the International Maritime Organization, or the IMO, including the International Convention for the Prevention of Pollution from Ships of 1975, the International Convention for the Prevention of Marine Pollution of 1973, and the International Convention for the Safety of Life at Sea of 1974. To comply with these and other regulations we may be required to incur additional costs to meet new maintenance and inspection requirements, develop contingency plans for potential spills, and obtain insurance coverage. Because those laws and regulations are often revised, we cannot predict the ultimate cost of complying with them, or the impact they may have on the resale prices or useful lives of our vessels. However, a 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. Additional laws and regulations may be adopted which could limit our ability to do business or increase the cost of our doing business

and which could materially adversely affect our operations. For example, the April 2010Deepwater Horizonoil spill in the Gulf of Mexico may result in new regulatory initiatives, including raising liability caps under OPA. We are also required by various governmental and quasi-governmental agencies to obtain permits, licenses, certificates and financial assurances with respect to our operations. These permits, licenses, certificates and financial assurances may be issued or renewed with terms that could materially and adversely affect our operations.

The operation of our vessels is affected by the requirements set forth in the International Management Code for the Safe Operation of Ships and Pollution Prevention (“ISM Code”). The ISM Code requires ship owners and bareboat charterers to develop and maintain an extensive “Safety Management System” (“SMS”) that includes the adoption of a safety and environmental protection policy setting forth instructions and procedures for safe operation and describing procedures for dealing with emergencies. The failure of a ship owner or bareboat charterer to comply with the ISM Code may subject the owner or charterer to increased liability, may decrease available insurance coverage for the affected vessels, may result in a denial of access to, or detention in, certain ports or may result in breach of our bank covenants. Currently, each of the vessels in our fleet is ISM Code-certified. Because these certifications are critical to our business, we place a high priority on maintaining them. Nonetheless, there is the possibility that such certifications may not be renewed.

We currently maintain, for each of our vessels, pollution liability insurance coverage in the amount of $1.0 billion per incident. In addition, we carry hull and machinery and protection and indemnity insurance to cover the risks of fire and explosion. Under certain circumstances, fire and explosion could result in a catastrophic loss. We believe that our present insurance coverage is adequate, but not all risks can be insured, and there is the possibility that any specific claim may not be paid, or that we will not always be able to obtain adequate insurance coverage at reasonable rates. If the damages from a catastrophic spill exceeded our insurance coverage, the effect on our business would be severe and could possibly result in our insolvency.

We believe that regulation of the shipping industry will continue to become more stringent and compliance with such new regulations will be more expensive for us and our competitors. Substantial violations of applicable requirements or a catastrophic release from one of our vessels could have a material adverse impact on our financial condition and results of operations.

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

Due to concern over the risks of climate change, a number of countries and the International Maritime Organization, or “IMO”, have adopted, or are considering the adoption of, regulatory frameworks to reduce greenhouse gas emission from ships. These regulatory measures may include adoption of cap and trade regimes, carbon taxes, increased efficiency standards and incentives or mandates for renewable energy. Emissions of greenhouse gases from international shipping currently are not subject to the Kyoto Protocol to the United Nations Framework Convention on Climate Change, or the “Kyoto Protocol”, or any amendments or successor agreements, including the Paris Agreement adopted under the United Nations Framework Convention on Climate Change in December 2015, which contemplates commitments from each nation party thereto to take action to reduce greenhouse gas emissions and limit increases in global temperatures but did not include any restrictions or other measures specific to shipping emissions. However, restrictions on shipping emissions are likely to continue to be considered, and a new treaty may be adopted in the future that includes additional restrictions on shipping emissions to those already adopted under the International Convention for the Prevention of Marine Pollution from Ships, or the “MARPOL Convention”. Compliance with future changes in laws and regulations relating to climate change could increase the costs of operating and maintaining our ships and could require us to install new emission controls, as well as acquire allowances, pay taxes related to our greenhouse gas emissions or administer and manage a greenhouse gas emissions program.

Adverse effects upon the oil and gas industry relating to climate change, including growing public concern about the environmental impact of climate change, may also have an effect on demand for our services. For example, increased regulation of greenhouse gases or other concerns relating to climate change may reduce the demand for oil, refined petroleum products, liquefied natural gas or liquefied petroleum gas in the future or

create greater incentives for use of alternative energy sources. Any long-term material adverse effect on the oil and gas industry could have significant financial and operational adverse impacts on our business that we cannot predict with certainty at this time.

Our vessels are subject to periodic inspections by a classification society.

The hull and machinery of every 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 Safety of Life at Sea Convention. Our fleet is currently classed with Lloyds Register of Shipping, Nippon Kaiji Kyokai, or NKK, the American Bureau of Shipping, RINA SpA, DNV and Bureau Veritas.

A vessel must undergo annual surveys, intermediate surveys and special surveys. In lieu of a special survey, a vessel’s machinery may be on a continuous survey cycle, under which the machinery would be surveyed periodically over a five-year period. Our vessels are on special survey cycles for hull inspection and continuous survey cycles for machinery inspection. Every vessel is also required to be dry docked every two to three years for inspection of the underwater parts of such vessel. However, for vessels not exceeding 15 years that have means to facilitate underwater inspection in lieu of dry docking, the dry docking can be skipped and be conducted concurrently with the special survey.

If a vessel does not maintain its class and/or fails any annual survey, intermediate survey or special survey, the vessel will be unable to trade between ports and will be unemployable and we could be in violation of covenants in our loan agreements and insurance contracts or other financing arrangements. This would adversely impact our operations and revenues.

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

Crew members, suppliers of goods and services to a vessel, shippers of cargo and others may be entitled to a maritime lien against that vessel for unsatisfied debts, claims or damages. In many jurisdictions, a maritime lien holder may enforce its lien by arresting a vessel through foreclosure proceedings. The arrest or attachment of one or more of our vessels could interrupt our cash flow and require us to pay large sums of funds to have the arrest lifted.

In addition, in some jurisdictions, such as South Africa, under the “sister ship” theory of liability, a claimant may arrest both the vessel which is subject to the claimant’s maritime lien and any “associated” vessel, which is any vessel owned or controlled by the same owner. Claimants could try to assert “sister ship” liability against one vessel in our fleet for claims relating to another of our ships or, possibly, another vessel managed by Stealth Maritime, as was the Vafias Group.case with the arrest of our vessel MT Spike in August 2015 as discussed in “Item 8. Financial Information. Legal Proceedings”.

Governments could requisition our vessels during a period of war or emergency, resulting in loss of revenues.

A government could requisition for title or seize our vessels. Requisition for title occurs when a government takes control of a vessel and becomes the owner. Also, a government could requisition our vessels for hire. Requisition for hire occurs when a government takes control of a vessel and effectively becomes the charterer at dictated charter rates. Generally, requisitions occur during a period of war or emergency. Government requisition of one or more of our vessels would adversely impact our operations and revenues, thereby resulting in loss of revenues.

Risks involved with operating ocean-going vessels could affect our business and reputation, which would adversely affect our revenues and stock price.

The operation of an ocean-going vessel carries inherent risks. These risks include the possibility of:

Any of these circumstances or events could increase our costs or lower our revenues. The involvement of our vessels in a serious accident could harm our reputation as a safe and reliable vessel operator and lead to a loss of business.

Our vessels may suffer damage and we may face unexpected repair costs, which could affect our cash flow and financial condition.

If our vessels suffer damage, they may need to be repaired at a shipyard facility. The costs of repairs are unpredictable and can be substantial. We may have to pay repair costs that our insurance does not cover. The loss of earnings while these vessels are being repaired and repositioned, as well as the actual cost of these repairs, would have an adverse effect on our cash flow and financial condition. We do not intend to carry business interruption insurance.

Acts of piracy on ocean-going vessels have recently increased in frequency, which could adversely affect our business.

Acts of piracy have historically affected ocean-going vessels trading in regions of the world such as the South China Sea, the Indian Ocean and in the Gulf of Aden, off the coast of Somalia. Since 2008,Although the frequency of sea piracy worldwide leveled off somewhat in recent years, sea piracy incidents increased significantly,continue to occur, particularly in the Gulf of Aden off the coast of Somalia. For example,Somalia and increasingly in October 2010, Somali pirates captured theYork, an LPG carrier, which is not affiliated with us, off the coastGulf of Kenya. The vessel was released after a ransom was paid in March 2011.Guinea. If these piracy attacks occur in regions in which our vessels are deployed and are characterized by insurers as “war risk” zones, as the Gulf of Aden continues to be, or Joint War Committee (JWC) “war and strikes” listed areas, premiums payable for such coverage, for which we are responsible with respect to vessels employed on spot charters, but not vessels employed on bareboat or time charters, could increase significantly and such insurance coverage may be more difficult to obtain. In addition, crew costs, including due to employing onboard security guards, could increase in such circumstances. We usually employ armed guardguards on board the vessels on time and spot charters that transit areas where Somali pirates operate. We may not be adequately insured to cover losses from these incidents, which could have a material adverse effect on us. In addition, detention 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 and results of operations.

Our operations outside the United States expose us to global risks, such as political conflict and terrorism, that may interfere with the operation of our vessels.

We are an international company and primarily conduct our operations outside the United States. Changing economic, political and governmental conditions in the countries where we are engaged in business or where our

vessels are registered affect us. In the past, political conflicts, particularly in the Arabian Gulf, resulted in attacks on vessels, mining of waterways and other efforts to disrupt shipping in the area. For example, in October 2002, the vesselLimburg(which is not affiliated with our Company) was attacked by terrorists in Yemen. Acts of terrorism and piracy have also affected vessels trading in regions such as the South China Sea. Following the terrorist attack in New York City on September 11, 2001 and more recent attacks in other parts of the world, and the military response of the United States and other nations, including the conflict in Iraq, the likelihood of future acts of terrorism may increase, with the continuing conflicts in the Middle East and North Africa, and our vessels may face higher risks of being attacked. In addition, future hostilities or other political instability in regions where our vessels trade could affect our trade patterns and adversely affect our operations and performance. If the currentcertain shipping lanes are closed, such as Iran’s recent threat by Iran to close the Straits of Hormuz,

becomes an actuality, it could adversely affect the availability of and demand for crude oil and petroleum products, as well as LPG, and negatively affect our investment and our customers’ investment decisions over an extended period of time. In addition, sanctions against oil exporting countries such as Iran, Sudan and Syria, and the events in Ukraine and related sanctions against Russia may also impact the availability of crude oil, petroleum products and LPG and which would increase the availability of applicable vessels thereby impacting negatively charter rates. In addition, any charters that we enter into with Chinese customers may be subject to new regulations in China that may require us to incur new or additional compliance or other administrative costs and may require that we pay to the Chinese government new taxes or other fees. Changes in laws and regulations, including with regards to tax matters, and their implementation by local authorities could affect our vessels chartered to Chinese customers as well as our vessels calling to Chinese ports and could have a material adverse effect on our business, results of operations and financial condition.

Terrorist attacks, or the perception that LPG or natural gas facilities or oil refineries and LPG carriers, natural gas carriers or product carriers are potential terrorist targets, could materially and adversely affect the continued supply of LPG, natural gas and refined petroleum products to the United States and to other countries. Concern that LPG and natural gas facilities may be targeted for attack by terrorists has contributed to a significant community and environmental resistance to the construction of a number of natural gas facilities, primarily in North America. If a terrorist incident involving a gas facility or gas carrier did occur, the incident may adversely affect necessary LPG facilities or natural gas facilities currently in operation. Furthermore, future terrorist attacks could result in increased volatility of the financial markets in the United States and globally and could result in an economic recession in the United States or the world. Any of these occurrences could have a material adverse impact on our operating results, revenues and costs.

Our vessels may call on ports located in countries that are subject to sanctions and embargoes imposed by the U.S. or other governments, which could adversely affect our reputation and the market for our common stock.

From time to time on charterers’ instructions, our vessels have called and may again call on ports located in countries subject to sanctions and embargoes imposed by the United States government and countries identified by the United States government as state sponsors of terrorism, such as Cuba, Iran, Sudan and Syria. The U.S. sanctions and embargo laws and regulations vary in their application, as they do not all apply to the same covered persons or proscribe the same activities, and such sanctions and embargo laws and regulations may be amended or strengthened over time. In 2010,On January 16, 2016, “Implementation Day” for the Iran Joint Comprehensive Plan of Action (JCPOA), the United States lifted its nuclear-related secondary sanctions against Iran which prohibited certain conduct by non-U.S. companies and individuals that occurred entirely outside of U.S. jurisdiction involving specified industry sectors in Iran, including the energy, petrochemical, automotive, financial, banking, mining, shipbuilding and shipping sectors. By lifting the secondary sanctions against Iran, the U.S. enacted the Comprehensive Iran Sanctions Accountability and Divestment Act (“CISADA”), which expanded the scope of the Iran Sanctions Act of 1996. Among other things, CISADA expands the application of the prohibitions involving Iran to include ships or shipping servicesgovernment effectively removed U.S. imposed restraints on dealings by non-U.S. companies, such as our company,Company, and introduces limitsindividuals with these formerly targeted Iranian business sectors. Non-U.S. companies continue to be prohibited under U.S. sanctions from (i) knowingly engaging in conduct that seeks to evade U.S. restrictions on the ability of companies and persons to do businesstransactions or tradedealings with Iran when such activities relate toor that causes the investment, supply or export of refined petroleumgoods or petroleum products. In addition, in October 2012, President Obama issued an executive order implementing the Iran Threat Reduction and Syria Human Rights Act of 2012 (the “ITRA”) which extends the application of all U.S. laws and regulations relating to Iran to non-U.S. companies controlled by U.S. companies or persons as if they were themselves U.S. companies or persons, expands categories of sanctionable activities, adds additional forms of potential sanctions and imposes certain related reporting obligations with respect to activities of SEC registrants and their affiliates. The ITRA also includes a provision requiring the President ofservices from the United States to impose fiveIran, (ii) exporting, re-exporting or more sanctionstransferring to Iran any goods, technology, or services originally exported from Section 6(a) of the Iran Sanctions Act, as amended, on a person the President determines is controlling beneficial owner of,U.S. and / or otherwise owns, operates or controls or insures a vessel that was used to transport crude oil from Iran to another country and (1) if the person is a controlling beneficial owner of the vessel, the person had actual knowledge the vessel was so used or (2) if the person otherwise owns, operates, controls, or insures the vessel, the person knew or should have known the vessel was so used. Such a person could be subject to a variety of sanctions, including exclusion from U.S. capital markets, exclusion from financial transactions subject to U.S. export jurisdiction and exclusion(iii) conducting transactions with of the Iranian or Iran-related individuals and entities that person’s vesselsremain or are placed in the future on OFAC’s list of Specially Designated Nationals and Blocked Persons (SDN List), notwithstanding the lifting of secondary sanctions. The U.S. has the ability to re-impose sanctions against Iran, including if, in the future, Iran does not comply with its obligations under the nuclear agreement.

The U.S. government’s primary Iran sanctions remain largely unchanged after Implementation Day and as a consequence, U.S. persons continue to be broadly prohibited from U.S. ports for upengaging in transactions or dealings with the Government of Iran and Iranian financial institutions, which effectively impacts the transfer of funds to, two years. Finally, in January 2013,from, or through the U.S. enactedfinancial system whether denominated in US dollars or any other currency. As a result of the Iran Freedom and Counter-Proliferation Act of 2012 (the “IFCPA”) which expanded the scopelifting of U.S. secondary sanctions (and relevant EU sanctions), we can anticipate that some of our charterers may direct us to carry cargoes to or from Iran. This could have various effects on any person that is partus, such as affecting our reputation and our relationships with our investors and financing sources, affecting the cost of Iran’s energy, shipping or shipbuilding sectorour insurance and operators of ports in Iran, and imposes penalties on any person who facilitates or otherwise knowingly provides significant financial, material or other supportenhancing our exposure to these entities.foreign currency fluctuations due to the need for non-US dollar payments with respect to such voyages.

While noneNone of our vessels called in any ports in any countries that are subject to sanctions and embargoes during 2012,Cuba, Iran, Sudan or Syria during the three year period ended December 31, 2012, two port calls in Iran were made for discharging operations by one of the vessels in our fleet, under a bareboat charter.2015. Although we believe that we are in compliance with all applicable sanctions and embargo laws and regulations and intend to maintain such

compliance, there can be no assurance that we will be in compliance in the future, particularly as the scope of certain laws may vary or may be subject to changing interpretations and we may be unable to prevent our charterers from violating contractual and legal restrictions on their operations of the vessels. Any such violation could result in fines or other penalties for us and could result in some investors deciding, or being required, to divest their interest, or not to invest, in the Company. Additionally, some investors may decide to divest their interest, or not to invest, in the Company simply because we do business with companies that do lawful business in sanctioned countries. Moreover, our charterers may violate applicable sanctions and embargo laws and regulations as a result of actions that do not involve us or our vessels, and those violations could in turn negatively affect our reputation. Investor perception of the value of our common stock may also be adversely affected by the consequences of war, the effects of terrorism, civil unrest and governmental actions in these and surrounding countries.

Risks Related To Our Business

We are dependent on the ability and willingness of our charterers to honor their commitments to us for all our revenues.

We derive all our revenues from the payment of charter hire by charterers.charterers of our vessels. The ability and willingness of each of our counterparties to perform their obligations under charter agreements with us will depend on a number of factors that are beyond our control and may include, among other things, general economic conditions, the condition of the LPG carrier sector, or in the case of our product carriers the refined petroleum product carrier sector and in the case of our crude oil tanker sectorsthe oil tanker sector, of the shipping industry and the overall financial condition of the counterparties. In addition, in depressed market conditions, there have been reports of charterers renegotiatingmay seek to renegotiate their charters or defaultingmay default on their obligations under charters and our charterers may fail to pay charter hire or attempt to renegotiate charter rates. For instance, in the third quarter of 2012 we agreed to 13% and 16% reductions in the daily charter rate payable under the bareboat charters for two of our product carriers for one year. The bareboat charters on which we deploy the tankers in our fleet, generally provide for charter rates that are above current spot market rates. Should a counterparty fail to honor its obligations under agreements with us, it may be difficult to secure substitute employment for such vessel, and any new charter arrangements we secure in the spot market or on bareboat or time charters could be at lower rates. If we lose a charter, we may be unable to re-deploy the related vessel on terms as favorable to us. We would not receive any revenues from such a vessel while it remained unchartered, but we may be required to pay expenses necessary to maintain the vessel in proper operating condition, insure it and service any indebtedness secured by such vessel. The failure by charterers to meet their obligations to us or an attempt by charterers to renegotiate our charter agreements could have a material adverse effect on our revenues, results, operations and financial condition.

We are exposed to the volatile spot market and charters at attractive rates may not be available when the charters for our vessels expire or when we are attempting to charter the ninenewbuilding LPG carriers which we have agreed to acquire, which would have an adverse impact on our revenues and financial condition.

As of April 1, 2013,2016, of our 3755 vessels, 29including two chartered in vessels, 42 were under period charters (bareboat chartercharters and time charters), while eight13 were deployed in the spot market. As of April 1, 2013, 76%2016, 62% of our

anticipated fleet days arewere covered by period charter contracts for the remainder of 20132016 and 46%32% for 20142017 (in each case, excluding our contracted newbuilding vessels), with period charters for four16 of our vessels scheduled to expire in 2013,2016 and 1311 of our period charters are scheduled to expire in 2014.2017. We have arranged an 18-month time charter for our LPG carrier newbuilding scheduled to be delivered in 2016, and have not yet arranged employment for any of the nineour four 22,000 cbm LPG carriers we have agreed to acquire, with three secondhand vesselscarrier newbuildings scheduled to be delivered to us in May 2013 and six newbuildings scheduled for delivery in 2014 and 2015. 2017.

We are exposed to fluctuations in the charter market for the remaining anticipated voyage days that are not covered by fixed-rate contracts, and to the extent the counterparties to our fixed-rate charter contracts fail to honor their obligations to us. The successful operation of our vessels in the competitive and highly volatile spot charter market depends on, among other things, obtaining profitable spot charters, which depends greatly on vessel supply and demand, and minimizing, to the extent possible, time spent waiting for charters and time spent traveling unladenunloaded to pick up cargo. When the current

charters for our fleet expire or are terminated, it may not be possible to re-charter these vessels at similar rates, or at all, or to secure charters for our contracted LPG carrier acquisitions at similarly profitable rates, or at all. As a result, we may have to accept lower rates or experience off hire time for our vessels, which would adversely impact our revenues, results of operations and financial condition.

We depend upon a few significant customers for a large part of our revenues. The loss of one or more of these customers could adversely affect our financial performance.

In our operating history we have derived a significant part of our revenue from a small number of charterers. For the year ended December 31, 2010, approximately 43% of our revenues were derived from our four largest charter customers. For the years ended December 31, 20112013, 2014 and December 31, 2012,2015, we had only one customer from which we derived more than 10% of our revenues, namely Petredec, that accountedaccounting for 14% of our revenues11%, 13% and 12%13% of our revenues, respectively. Furthermore, for the year ended December 31, 2012,2015, our three largest customers accounted for 28%29% of our revenues. Although there has been a decline in the concentration of our revenuesOverall, we anticipate a limited number of customers will continue to represent significant amounts of our revenue. If these customers cease doing business or do not fulfill their obligations under the charters for our vessels, due to the increasing financial pressure on these customers or otherwise, our results of operations and cash flows could be adversely affected. Further, if we encounter any difficulties in our relationships with these charterers, our results of operations, cash flows and financial condition could be adversely affected.

Our loan agreements or other financing arrangements contain restrictive covenants that may limit our liquidity and corporate activities.

Our loan agreements impose, and our future financing arrangements may impose, operating and financial restrictions on us. These restrictions may limit our ability to:

Our loan agreements require us to maintain specified financial ratios, satisfy financial covenants and contain cross-default clauses. These financial ratios and covenants include requirements that we:

Our loan agreementsThey also require that members of theour Chief Executive Officer, Harry Vafias, together with his immediate family, at all times own at least 15%10% of our outstanding capital stock and certain of our loan agreements provide that it would

be an event of default if Harry Vafias ceased to serve as an executive officer or director of our company, Harry Vafias together with his immediate family, ceased to control our company or any other person or group controlled 25% or more of the voting power of our outstanding capital stock. In addition, our loan agreements include restrictions on the payment of dividends.

dividends in amounts exceeding 50% of our free cash flow in any rolling 12-month period. As of December 31, 2012,2015, we were in compliance with the original covenants or had waivers amending the original covenants such that we were in compliance. With respect to one facility under which a total of $26.9 million was outstanding as of December 31, 2012, we had obtained a waiver until June 30, 2013 reducing the required loan to value ratio to 110%. Upon expiry on June 30, 2013, we do not expect to be in compliance with this covenant. Management has the intention and expects to have the ability to cure this breach and as a result we may be required to prepay debt or provide additional collateral to the lenders in the form of cash in order to regain compliance with this covenant. An amount of approximately $3.7 million has been classified as restricted cash as of December 31, 2012 with respect to the anticipated need to cure such expected non-compliance. If not remedied when requested, this non-compliance would constitute an event of default and could result in the lender requiring immediate repayment of the loan and may cause cross defaults in our other indebtedness.covenants.

As a result of the restrictions in our loan agreements, or similar restrictions in our future financing arrangements with respect to future vessels which we have yet to identify, we may need to seek permission from our lenders in order to engage in some corporate actions. Our lenders’ interests may be different from ours, and we may not be able to obtain their permission when needed. This may prevent us from taking actions that we believe are in our best interest which may adversely impact our revenues, results of operations and financial condition.

A failure by us to meet our payment and other obligations, including our financial covenants and security coverage requirement, could lead to defaults under our secured loan agreements. Our lenders could then accelerate our indebtedness and foreclose on our fleet. The loss of our vessels would mean we could not run our business.

The market values of our vessels may decrease, which could cause us to breach covenants in our credit and loan facilities, and could have a material adverse effect on our business, financial condition and results of operations.

Our loan agreements, for our borrowings, which are secured by liens on our vessels, contain various financial covenants, including requirements that relate to our financial condition, operating performance and liquidity. For example, we are required to maintain a minimum equitymaximum consolidated leverage ratio that is based, in part, upon the market value of the vessels securing the applicable loan, as well as a minimum ratio of the market value of vessels securing a loan to the principal amount outstanding under such loan. The market value of LPG carriers, product carriers and crude oil tankers is sensitive to, among other things, changes in the LPG carrier, product carrier and crude oil tanker charter markets, respectively, with vessel values deteriorating in times when LPG carrier, and product carrier and tanker charter rates, as applicable, are falling and improving when charter rates are anticipated to rise. Lower charter rates in the LPG carrier, product carrier and crude oil tanker markets coupled with the difficulty in obtaining financing for vessel purchases have adversely affected LPG carrier and, to a greater extent, product carrier and Aframax tanker values.values in the recent past, and the impact of the dramatic decline in oil prices on demand for LPG has adversely affected LPG carrier values since the fourth quarter of 2014. A continuation of these conditions would lead to a significant decline in the fair market values of our vessels, which may result in our not being in compliance with these loan covenants. For instance, upon expiry of consecutive waivers that reduced the security coverage requirement for the period from December 31, 2010 to June 30, 2013 we expect to not be in compliance with the security cover covenant in our Deutsche Bank credit facility. As a result, we may be required to prepay debt or provide additional collateral to our lenders in the form of cash in order to regain compliance with this covenant. An amount of approximately $3.7 million has been classified as restricted cash as of December 31, 2012 in anticipation of the need to cure such expected non-compliance. Our lenders’ interests may be different from ours, and we may not be able to obtain their permission when needed. Furthermore, ifIf the value of our vessels deteriorates significantly, we may have to record an impairment adjustment in our financial statements as we did in 2015 and 2014, which would adversely affect our financial results and further hinder our ability to raise capital.

A failure to comply with our covenants and/or obtain covenant waivers or modifications could result in our lenders requiring us to post additional collateral, enhance our equity and liquidity, increase our interest payments or pay down our indebtedness to a level where we are in compliance with our loan covenants, sell vessels in our fleet or accelerate our indebtedness, which would impair our ability to continue to conduct our business. If our indebtedness is accelerated, we may not be able to refinance our debt or obtain additional financing and could lose our vessels if our lenders foreclose their liens. In addition, if we find it necessary to sell our vessels at a time when vessel prices are low, we will recognize losses and a reduction in our earnings, which could affect our ability to raise additional capital necessary for us to comply with our loan agreements.

We may be unable to enter into definitive agreements for credit facilities for our five LPG carrier newbuildings, or to draw down the full amount of our committed credit facilitythereunder if the market values of our vessels decline, which could adversely affect our ability to complete the acquisition of our LPG carrier newbuildings.

ThereWe have entered into commitment letters for credit facilities for our newbuilding LPG carrier scheduled for delivery in 2016 and two of our 22,000 cbm LPG carrier newbuildings scheduled to be delivered in 2017, and obtained a term sheet from an international lender, which remains subject to credit committee approval, for credit facilities for our other two 22,000 cbm LPG carrier newbuildings scheduled to be delivered in 2017. If we are unable to enter into definitive agreements for such credit facilities, we may be unable to obtain replacement financing on terms acceptable to us or at all. In addition, there are restrictions on the amount of cash that can be advanced to us under these expected credit facilities for our committed credit facility, for which we have obtained a commitment letter and which remains subject to final documentation,five newbuilding LPG carriers based on the market value and employment of the vessel or vessels in respect of which the advance is being made. IfAccordingly, if the market value of our vessels decline, or, in some cases, we are not able to secure suitable employment for our vessels, we may not be able to draw down the full amount of our committedexpected credit facility,facilities, or to obtain other financing or incur debt on terms that are acceptable to us or at all. In addition, ifIf we are unable to enter into definitive agreements for suchour expected credit facility, for which we have a commitment letter, we may be unable to retain replacement financing on terms acceptable to usfacilities or at all. In such an event,drawdown the full amount thereunder, our ability to complete the acquisition of our newbuilding LPG carriers, four of which we intend to partially finance with borrowings under such committed credit facility,facilities, could be adversely affected and we could lose the deposits made on such vessels, or we may have to reduce our existing cash balances in order to pay for the delivery of the vessels.

We may be unable to obtain financing for the acquisition of the additional LPG carriers for which we have entered into purchase agreements.

In March 2013, we entered into separate agreements to acquire three secondhand LPG carriers for an aggregate of $43.7 million and two newbuilding LPG carriers under construction for an aggregate of $50.0 million. The three secondhand vessels are scheduled to be delivered to us in May 2013 while the two vessels under construction are scheduled to be delivered to us in 2014. We may be unable to obtain the necessary financing for the acquisition of these vessels on attractive terms or at all. If financing is not available when needed, including potentially through equity financings, or is available only on unfavorable terms, we may be unable to meet our purchase price payment obligations and complete the acquisition of these vessels. Our failure to obtain the funds for these capital expenditures could have a material adverse effect on our business, results of operations and financial condition, as well as our cash flows.

Global economic conditions and disruptions in world financial markets and the resulting governmental action in the United States and in other parts of the world could have a material adverse impact on our results of operations, financial condition and cash flows.

Global economic conditions and financial markets have been severely disrupted and volatile in recent years and remain subject to significant vulnerabilities, in the year-to-date, such as the deterioration of fiscal balances and the rapid accumulation of public debt, continued deleveraging in the banking sector and limited supply of credit. Credit markets and the debt and equity capital markets were exceedingly distressed in 2008 and 2009, and have been volatile since that time. The current sovereign debt crisis in countries such as Greece, for example, and concerns over debt levels of certain other European Union member states and in other countries around the world, as well as concerns about international banks, have led to increased volatility in global credit and equity markets. These issues, along with the re-pricing of credit risk and the difficulties currently experienced by financial institutions, have made, and will likely continue to make, it difficult to obtain financing. 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 refused to refinance existing debt on terms similar to our current debt or at all. Furthermore, certain banks that have historically been significant lenders to the shipping industry reduced or ceased lending activities in the shipping industry. New banking regulations, including tightening of capital requirements and the resulting policies adopted by lenders, could further reduce lending activities. We may experience difficulties obtaining financing commitments or be unable to fully draw on the capacity under our committed credit facilities in the future or refinance our credit facilities when our current facilities mature if our lenders are unwilling to extend financing to us or unable to meet their funding obligations due to their own liquidity, capital or solvency issues. We cannot be certain that financing will be available on acceptable terms or at all. In the absence of available financing, we also may be unable to take advantage of business opportunities or respond to competitive pressures.

In addition, as a result of the ongoing economic turmoil in Greece resulting from the sovereign debt crisis and the related austerity measures implemented by the Greek government, our operations in Greece may be subjected to new regulations that may require us to incur new or additional compliance or other administrative costs and may require that we pay to the Greek government new taxes or other fees. We also face the risk that strikes, work stoppages, civil unrest and violence within Greece may disrupt our shoreside operations and those of our managers located in Greece.

We currently maintain all of our cash and cash equivalents with a limited number of financial institutions, including financial institutions located in Greece, which subjects us to credit risk.

We currently maintain all of our cash and cash equivalents with a limited number of financial institutions located in the United States, United Kingdom, Germany, France, The Netherlands, Luxembourg and Greece. Those financial institutions located in Greece may be subsidiaries of international banks or Greek financial institutions. Economic conditions in Greece have been, and continue to be, severely disrupted and volatile, and as a result of sovereign weakness, Moody’s Investor Services Inc.continued recession and other rating agencies have downgraded the bank financial strength ratings,fragile political stability, as well as the deposit and debt ratings of

several Greek banks tothat reflect their weakening stand-alone financial strength and the anticipated additional pressures stemming from the country’s challenged economic prospects.

In addition, in 2015, Greece implemented capital controls restricting the transfer of funds out of Greece, which could restrict our uses of the limited amount of cash we hold in Greece. We do not expect any of our balances to be covered by insurance in the event of default by any of these financial institutions. The occurrence of such a default, or in the case of restrictions in capital movements by these institutions or countries, could therefore have a material adverse effect on our business, financial condition, results of operations and cash flows, and we may lose part or all of our cash that we have deposited with such financial institutions. If we are unable to fund our capital expenditures, we may not be able to continue to operate some of our vessels, which would have a material effect on our business.

Our ability to obtain additional debt financing may be dependent on the performance of our then existing charters and the creditworthiness of our charterers.

The actual or perceived credit quality of our charterers, and any defaults by them, may materially affect our ability to obtain the additional capital resources that we will require in order to purchase additional vessels or may significantly increase our costs of obtaining such capital. Our inability to obtain additional financing at a higher than anticipated cost or at all may materially affect our results of operation and our ability to implement our business strategy.

A significant increase in our debt levels may adversely affect us and our cash flows.

As of April 1, 2013December 31, 2015 we had outstanding indebtedness, net of $336.0 million andcapitalized arrangement fees of $422.2 million. As of April 1, 2016 we expectexpected to incur further indebtedness as we finance the remaining purchase price of our ninefive contracted vessels and further expand our fleet. This increase in the level of indebtedness and the need to service the indebtedness may impact our profitability and cash available for growth of our fleet, working capital and dividends.dividends if any. Additionally, any increase in the present low interest rate levels may increase the cost of servicing our indebtedness with similar results.

To finance our future fleet expansion program beyond our current fleet, including our contracted vessels, we expect to incur additional secured debt. We have to dedicate a portion of our cash flow from operations to pay the principal and interest on our debt. These payments limit funds otherwise available for working capital, capital expenditures, dividends and other purposes. The need to service our debt may limit our funds available for other purposes, including any distributions of cash to our stockholders, and our inability to service our debt could lead to acceleration of our debt and foreclosure on our fleet.

Moreover, carrying secured indebtedness exposes us to increased risks if the demand for LPG, oil or oil-related marine transportation decreases and charter rates and vessel values are adversely affected.

We are exposed to volatility in the London Interbank Offered Rate (“LIBOR”).

The amounts outstanding under our senior secured credit facilities have been, and we expect borrowings under additional credit facilities we have entered into and may enter into in the future will generally be, advanced at a floating rate based on LIBOR, which has been stable, but volatile in prior years, which can affect the amount of interest payable on our debt, and which, in turn, could have an adverse effect on our earnings and cash flow. In addition, in recent years, LIBOR has been at relatively low levels, and may rise in the future as the current low interest rate environment comes to an end. Our financial condition could be materially adversely affected at any time that we have not entered into interest rate hedging arrangements to hedge our exposure to the interest rates applicable to our credit facilities and any other financing arrangements we may enter into in the future, including those we enter into to finance a portion of the amounts payable with respect to newbuildings. As of December 31, 2015, we had 22% of our loan exposure under interest rate swap arrangements. Even if we have entered into interest rate swaps or other derivative instruments for purposes of managing our interest rate exposure, our hedging strategies may not be effective and we may incur substantial losses.

The derivative contracts we have entered into to hedge our exposure to fluctuations in interest rates and foreign currency exchange rates could result in higher than market interest rates and charges against our income, as well as reductions in our stockholders’ equity.

We have entered into interest rate swaps for purposes of managing our exposure to fluctuations in interest rates applicable to indebtedness under our credit facilities which were advanced at floating rates based on LIBOR. Our hedging strategies, however, may not be effective and we may incur substantial losses if interest rates or currencies move materially differently from our expectations.

To the extent our existing interest rate swaps do not, and future derivative contracts may not qualify for treatment as hedges for accounting purposes, which as is the case for all of our existing interest rate swaps, whichApril 1, 2016 had an aggregate notional amount of $63.1 million as of April 1, 2013,nil, we recognize fluctuations in the fair value of such contracts in our statement of income. In addition, changes in the fair value of ourany derivative contracts even any that do qualify for treatment as hedges, which as of April 1, 2016 had an aggregate notional amount of $66.4 million, are recognized in “Other Comprehensive Income” on our balance sheet, and can affect compliance with the net worth covenant requirements in our credit facilities. Our financial condition could also be materially adversely affected to the extent we do not hedge our exposure to interest rate fluctuations under our financing arrangements under which loans have been advanced at a floating rate based on LIBOR.

In addition, we have in the past and may in the future enter into foreign currency derivative contracts in order to hedge an exposure to foreign currencies related to shipbuilding contracts if these were denominated in foreign currencies. As of April 1, 2013, we do not have any obligations related to shipbuilding contract in foreign currencies. However, in the past we did have exposure in Japanese Yen in respect of our obligations in Japanese Yen for the constructions of vessels in Japan.contracts. We would expect to recognize fluctuations in the fair value of such contracts in our income statement.statement of income.

Any hedging activities we engage in may not effectively manage our interest rate and foreign exchange exposure or have the desired impact on our financial conditions or results of operations.

Because we generate all of our revenues in U.S. dollars but incur a portion of our expenses in other currencies, exchange rate fluctuations could adversely affect our results of operations.

We generate all of our revenues in U.S. dollars and the majority of our expenses are also in U.S. dollars. However, a small portion of our overall expenses, mainly executive compensation, is incurred in Euros. This could lead to fluctuations in net income due to changes in the value of the U.S. dollar relative to the other currencies, in particular the Euro. Expenses incurred in foreign currencies against which the U.S. dollar falls in value can thereby increase, decreasing our net income.

We are dependent on our relationship with the Vafias Group and Stealth Maritime.Maritime Corporation S.A.

As of April 1, 2013,2016, Stealth Maritime Corporation S.A. (“Stealth Maritime”) served as commercial manager for all 55 operating vessels in our vesselsfleet and technical manager for 1434 of the 41 operating vessels in our fleet not deployed on bareboat charters, while subcontracting the technical management of the remaining seven vessels in our fleet not deployed on bareboat charters to other technical managers, including five ships to Brave

Maritime, which is affiliated with Stealth Maritime.

We are accordingly dependent upon our fleet manager, Stealth Maritime, for for:

The loss of Stealth Maritime’s services or its failure to perform its obligations to us properly for financial or other reasons could materially and adversely affect our business and the results of our operations. Although we

may have rights against Stealth Maritime if it defaults on its obligations to us, you willwould have no recourse against Stealth Maritime. In addition, we might not be able to find a replacement manager on terms as favorable as those currently in place with Stealth Maritime. Further, we expect that we will need to seek approval from our lenders to change our manager.

We depend on third party managers to manage part of our fleet.

Stealth Maritime subcontracts the technical management for some of our vessels to third parties, including crewing, operation, maintenance and repair. The loss of their services or their failure to perform their obligations could materially and adversely affect the results of our operations. Although we may have rights against these managers if they default on their obligations, you willwould have no recourse against these parties. In addition, we might not be able to find replacement technical managers on terms as favorable as those currently in place. Further, in certain circumstances, we expect that we will need to seek approval from our lenders under the terms of certain of our credit facilities to change these third party managers with respect to certain of the vessels in our fleet.

We may enter into certain significant transactions with companies affiliated with members of the Vafias Groupfamily which may result in conflicts of interests.

In addition to our management contract with Stealth Maritime, a company controlled by the Vafias Group andother members of the Vafias family, of which our Chief Executive Officer is a member, we may enter into other transactions with companies affiliated with members of the Vafias Groupfamily such as the two charters we entered into in April 2012 and the agreements for the acquisition of four of our newbuilding LPG carriers in September 2012. Such transactions could create conflicts of interest that could adversely affect our business or your interests as holders of our common stock, as well as our financial position, results of operations and our future prospects.

Our directors and officers may in the future hold direct or indirect interests in companies that compete with us.

Our directors and officers each have a history of involvement in the shipping industry and may in the future, directly or indirectly, hold investments in companies that compete with us. In that case, they may face conflicts between their own interests and their obligations to us.

Companies affiliated with us, including Stealth Maritime and Brave Maritime, may manage or acquire vessels that compete with our fleet.

It is possible that Stealth Maritime or companies affiliated with Stealth Maritime, including Brave Maritime, could, in the future, agree to manage vessels that compete directly with ours. As long as Stealth Maritime (or an

entity with respect to which Harry N. Vafias is an executive officer, director or the principal shareholder) is our fleet manager or Harry N. Vafias is an executive officer or director of the Company, Stealth Maritime has granted us a right of first refusal to acquire any LPG carrier, which Stealth Maritime may acquire in the future. In addition, Stealth Maritime has agreed that it will not charter-in any LPG carrier without first offering the opportunity to charter-in such vessel to us. Our President and Chief Executive Officer, Harry N. Vafias, has granted us an equivalent right with respect to any entity that he is an executive officer, director or principal shareholder of, so long as he is an executive officer or a director of us.our company. Were we, however, to decline any such opportunity offered to us or if we do not have the resources or desire to accept any such opportunity, Stealth Maritime or the entity controlled by Mr. Vafias could retain and manage the vessel. This right of first refusal does not cover product carriers or crude oil tankers. In addition, these restrictions, including the right of first refusal, do not apply to Brave Maritime. Furthermore, this right of first refusal does not prohibit Stealth Maritime from managing vessels owned by unaffiliated third parties in competition with us. In such cases, they could compete with our fleet and may face conflicts between their own interests and their obligations to us. In the future, we may also consider further diversifying into wet, dry or other gas shipping sectors, which, like product carriers and crude oil tankers, isare not covered by this right of first refusal agreement. Any such vessels would be in competition with Stealth Maritime and companies affiliated with Stealth Maritime. Stealth Maritime might be

faced with conflicts of interest with respect to their own interests and their obligations to us that could adversely affect our business and your interests as stockholders.

As our fleet has grown in size, we have needed to improve our operations and financial systems, staff and crew; if we cannot maintain these systems or continue to recruit suitable employees, our business and results of operations may be adversely affected.

We have significantly expanded our fleet since our initial public offering in October 2005, and as a consequence of this, Stealth Maritime has invested considerable sums in upgrading its operating and financial systems, as well as hiring additional well-qualified personnel to manage the vessels now managed by Stealth Maritime. In addition, as we have expanded our fleet, we have had to rely on our technical managers to recruit suitable additional seafarers and shoresideashore administrative and management personnel. Stealth Maritime and those technical managers may not be able to continue to hire suitable employees to the extent we continue to expand our fleet. Our vessels, in particular our LPG carriers, require a technically skilled staff with specialized training. If the technical managers’ crewing agents are unable to employ such technically skilled staff, they may not be able to adequately staff our vessels. If Stealth Maritime is unable to operate our financial and operations systems effectively or our technical managers are unable to recruit suitable employees as we expand our fleet, our results of operation and our ability to expand our fleet may be adversely affected.

Delays in the delivery of our LPG carriers under construction or ourany secondhand LPG carriers we agree to acquire could harm our operating results.

In 2012As of April 1, 2016, we had agreed to acquire fourfive newbuilding eco LPG carriers under construction to be delivered to us in 20142016 and 20152017 upon their constructioncompletion by a South Korean shipyard. In addition, in March 2013, we agreed to acquire two LPG carriers under construction to be delivered to us in 2014 upon their construction by aand Japanese shipyard, and three secondhand LPG carriers built in 2006 to be delivered to us in May 2013.shipyards. Delays in the delivery of these vessels, or any additional newbuilding or secondhand vessels we may agree to acquire, would delay our receipt of revenues generated by these vessels and, to the extent we have arranged charter employment for these vessels, could possibly result in the cancellation of those charters, and therefore adversely affect our anticipated results of operations. Although this would delay our funding requirements for the installment payments to purchase these vessels, it would also delay our receipt of revenues under any charters we managearrange for such vessels. The delivery of newbuilding vessels could be delayed because of, among other things: work stoppages or other labor disturbances; bankruptcy or other financial crisis of the shipyard building the vessel; hostilities or political or economic disturbances in the countries where the vessels are being built, including any escalation of recent tensions involving North Korea; weather interference or catastrophic event, such as a major earthquake, tsunami or fire; our requests for changes to the original vessel specifications; requests from our customers, with whom we have arranged charters for such vessels, to delay construction and delivery of such vessels due to weak economic conditions and shipping demand and a dispute with the shipyard building the vessel.

In addition, the refund guarantors under the newbuilding contracts, which are banks, financial institutions and other credit agencies, may also be affected by financial market conditions in the same manner as our lenders and, as a result, may be unable or unwilling to meet their obligations under their refund guarantees. If the shipbuilders or refund guarantors are unable or unwilling to meet their obligations to the sellers of the vessels, this may impact our acquisition of vessels and may materially and adversely affect our operations and our obligations under our credit facilities. Moreover, because we have agreed to acquire some of the LPG carriers under construction as “resales,” we do not have any direct contractual rights under the construction contracts, but rather have agreements with the seller that ordered the construction of such vessels and must rely on the seller to pursue its rights under the construction contract. In 2009, due to certain technical defects in the specifications of the vessel which became apparent to us, we cancelled the delivery of a newbuilding medium range product carrier for which we had contracted, in connection with which we forfeited a $5.75 million deposit and agreed to pay a cancellation fee of $10.75 million, and cancelled its arranged bareboat charter.

The delivery of any secondhand vessels could be delayed because of, among other things, hostilities or political disturbances, non-performance of the purchase agreement with respect to the vessels by the seller, our inability to obtain requisite permits, approvals or financing or damage to or destruction of the vessels while being operated by the seller prior to the delivery date.

If we fail to manage our growth properly, we may not be able to successfully expand our market share.

As and when market conditions permit, we intend to continue to prudently grow our fleet over the long term, including through the acquisition of the ninefive vessels for which we have contracted. The acquisition of these and additional vessels could impose significant additional responsibilities on our management and staff, and may necessitate that we, and they, increase the number of personnel. In the future, we may not be able to identify suitable vessels, acquire vessels on advantageous terms or obtain financing for such acquisitions. Any future growth will depend on:

Growing a business by acquisition presents numerous risks such as undisclosed liabilities and obligations, difficulty in obtaining additional qualified personnel, managing relationships with customers and our commercial and technical managers and integrating newly acquired vessels into existing infrastructures. We may not be successful in executing any growth initiatives and may incur significant expenses and losses in connection therewith.

We may decide to sell certain of the vessels in our fleet if in our view market conditions are favorable for such sales or sell our LPG carriers in our fleet that are subject to purchase options held by the charterers of the respective vessels, which, if exercised, could reduce the size of our LPG carrier fleet and reduce our future revenues.

Since our initial public offering through December 31, 2015 we have sold 20 LPG carriers from our fleet and we may decide to sell more vessels from our fleet if, in our view, the market conditions are favorable for such sales. The chartering arrangements with respect to six LPG carriers of our fleet include options for the respective charterers to purchase the vessels at stipulated prices at any time during the term of the existing charter for the respective vessels. The option exercise prices with respect to these vessels decline over time and reflect an estimate, made at the time of entry into the applicable charter in the first quarter of 2014, of market prices. In addition, the chartering arrangements for three LPG carriers in our fleet give the charterer the right to purchase the respective vessel at the end of the current charter term in 2021 and 2022. This might result in our company realizing losses or gains depending on the time each vessel option is exercised. If the charterers were to exercise these options with respect to any or all of these vessels or if we sell additional vessels, the expected size of our LPG carrier fleet would be reduced and, if there were a scarcity of secondhand LPG carriers available for acquisition at such time and because of the delay in delivery associated with commissioning newbuilding LPG carriers, we could be unable to replace these vessels with other comparable vessels, or any other vessels, quickly or, if LPG carriers values were higher than currently anticipated at the time we were required to sell these vessels, at a cost equal to the purchase price paid by the charterer. Consequently, if we sell additional vessels or if these purchase options were to be exercised, the expected size of our LPG carrier fleet would be reduced, and as a result our anticipated level of revenues would be reduced.

We may be unable to attract and retain key management personnel and other employees in the shipping industry, which may negatively affect the effectiveness of our management and our results of operation.

Our success depends to a significant extent upon the abilities and efforts of our management team, including our Chief Executive Officer, Harry Vafias, our Chief Financial Officer, Konstantinos Sistovaris, and our Deputy Chairman and Executive Director, Lambros Babilis.Vafias. In addition, Harry Vafias is a member of the Vafias family, which controls the Vafias Group, which in turn controls Stealth Maritime, our fleet manager. Our success will depend upon our and Stealth Maritime’s ability to hire and retain qualified managers to oversee our operations. The loss of any of these individuals could adversely

affect our business prospects and financial condition. Difficulty in hiring and retaining personnel could adversely affect our results of operations. We do not have employment agreements directly with our Chief Executive Officer or Chief Financial Officerkey personnel who are technically employees of Stealth Maritime, our fleet manager, although under our management agreement with Stealth

Maritime, our relationship with each of our Chief Executive Officer and Chief Financial Officer is governed by terms substantially similar to those typically included in employment agreements. We do not have an employment agreement with Lambros Babilis, our Deputy Chairman and Executive Director. We do not intend to maintain “key man” life insurance on any of our officers.

In the highly competitive international LPG carrier, product carrier and crude oil tanker markets, we may not be able to compete for charters with new entrants or established companies with greater resources.

We deploy our vessels in highly competitive markets that are capital intensive. Competition arises primarily from other vessel owners, some of which have greater resources than we do. Competition for the transportation of LPG, refined petroleum products and crude oil can be intense and depends on price, location, size, age, condition and the acceptability of the vessel and its managers to the charterers. Competitors with greater resources could enter and operate larger LPG carrier fleets through consolidations or acquisitions, and many larger fleets alreadythat compete with us in each of these sectors may be able to offer more competitive prices and fleets.

We have three medium range product carriers and one Aframax crude oil tanker; however, we principally operate LPG carriers and our lack of a diversified business could adversely affect us.

Unlike many other shipping companies, which may carry dry bulk, crude oil, oil products or products or goods shipped in containers, we currently depend primarily on the transport of LPG. The vast majority of our revenue has been and is expected to be derived from this single source—the seaborne transport of LPG. Due to our lack of a more diversified business model, adverse developments in the seaborne transport of LPG and the market for LPG products have a significantly greater impact on our financial conditions and results of operations than if we maintained more diverse assets or lines of business.

We have expanded into the product carrier sector and into the crude oil tanker sector and we may not be able to successfully execute this expansion, or any further expansion, in such sectors or any other sectors, such as dry or other wet or gas shipping sectors we choose to expand into, which could have an adverse effect on our business, results of operation and financial condition.

We have expanded into the product carrier sector with the acquisition of three medium range product carriers and into the crude oil tanker sector with one Aframax tanker. In the future, we may further expand in these sectors or into dry or other wet or other gas shipping sectors if opportunities arise. We have limited experience in these sectors, including the product carrier and crude oil tanker sectors, and an inability to successfully execute our recent expansion into these sectors or any such future expansion plans could:

each of which could have an adverse effect on our business, results of operation and financial condition. We may also from time to time consider various alternatives for our product carriers and crude oil tankers that could involve the sale of all or a portion of our interest in these vessels and sectors.

Purchasing and operating previously owned, or secondhand, vessels may result in increased operating costs and vessels off-hire, which could adversely affect our revenues.

Our examination of secondhand vessels, which may not include physical inspection prior to purchase, does not provide us with the same knowledge about their condition and cost of any required (or anticipated) repairs that we would have had if these vessels had been built for and operated exclusively by us. Generally, we do not receive the benefit of warranties on secondhand vessels.

In general, the costscost of maintaining a vessel in good operating condition increaseincreases with its age. As of April 1, 2013,2016, the average age of the 33 LPG carriersvessels in our fleet, including chartered in vessels, was approximately 11.8 years, while two of our three

medium range product carriers were built in 2008 and the third in 2009 and the Aframax tanker in our fleet was built in 2010.9.3 years. Older vessels are typically less fuel efficient and more costly to maintain and operate than more recently constructed vessels due to improvements in engine technology. Cargo insurance rates increase with the age of a vessel, making older vessels less desirable to charterers.

Governmental regulations, safety or other equipment standards related to the age of vessels may require expenditures for alterations, or the addition of new equipment, to our vessels and may restrict the type of activities in which the vessels may engage. As our vessels age, market conditions may not justify those expenditures or enable us to operate our vessels profitably during the remainder of their useful lives. If we sell vessels, the sales prices may not equal and could be less than their carrying values at that time.

The shipping industry has inherent operational risks that may not be adequately covered by our insurance.

We procure hull and machinery insurance, protection and indemnity insurance, which includesinclude environmental damage and pollution insurance coverage, insurance and war risk insurance for our fleet. While we endeavor to be adequately insured against all known risks related to the operation of our ships, there remains the possibility that a liability may not be adequately covered and we may not be able to obtain adequate insurance coverage for our fleet in the future. The insurers may also not pay particular claims. Even if our insurance coverage is adequate, we may not be able to timely obtain a replacement vessel in the event of a loss. Our insurance policies contain deductibles for which we will be responsible and limitations and exclusions which may increase our costs or lower our revenue.

Our major stockholder exerts considerable influence on the outcome of matters on which our stockholders are entitled to vote and his interests may be different from yours.

Our major stockholder, our Chief Executive Officer, including through a company he controls, owns approximately 20.6%11.1% of our outstanding common stock as of April 1, 20132016 and exerts considerable influence on the outcome of matters on which our stockholders are entitled to vote, including the election of our Board of Directors and other significant corporate actions. The interests of this stockholder may be different from your interests.

We may have to pay tax on United States-source income, which would reduce our earnings.

Under the United States Internal Revenue Code of 1986, as amended, or the Code, 50% of the gross shipping income of vessel owning or chartering corporations, such as our subsidiaries, that is attributable to transportation that begins or ends, but does not both begin and end, in the United States is characterized as United States-source shipping income. United States-source shipping income is subject to either a (i) 4% United States federal income tax without allowance for deductions or (ii) taxation at the standard United States federal income tax rates (and potentially to a 30% branch profits tax), unless derived by a corporation that qualifies for exemption from tax under Section 883 of the Code and the Treasury Regulations promulgated thereunder.

Generally, we and our subsidiaries will qualify for this exemption for a taxable year if our shares are treated as “primarily and regularly traded” on an established securities market in the United States. Our shares of common stock will be so treated if (i) the aggregate number of our shares of common stock traded during such year on an established securities market in the United States exceeds the aggregate number of our shares of common stock traded during that year on established securities markets in any other single country, (ii) either (x) our shares of common stock are regularly quoted during such year by dealers making a market in our shares or (y) trades in our shares of common stock are effected, other than in de minimis quantities, on an established securities market in the United States on at least 60 days during such taxable year and the aggregate number of our shares of common stock traded on an established securities market in the United States during such year equals at least 10% of the average number of our shares of common stock outstanding during such taxable year

and (iii) our shares of common stock are not “closely held” during such taxable year. For these purposes, our

shares of common stock will be treated as closely held during a taxable year if, for more than one-half the number of days in such taxable year, one or more persons each of whom owns either directly or under applicable attribution rules, at least 5% of our shares of common stock, own, in the aggregate, 50% or more of our shares of common stock, unless we can establish, in accordance with applicable documentation requirements, that a sufficient number of the shares of common stock in the closely-held block are owned, directly or indirectly, by persons that are residents of foreign jurisdictions that provide United States shipping companies with an exemption from tax that is equivalent to that provided by Section 883 to preclude other stockholders in the closely-held block from owning 50% or more of the closely-held block of shares of common stock.

We believe that it is currently the case, and may also be the case in the future, that, one or more persons each of whom owns, either directly or under applicable attribution rules, at least 5% of our shares of common stock own, in the aggregate, 50% or more of our shares of common stock. In such circumstances, we and our subsidiaries may qualify for the exemption provided in Section 883 of the Code only if a sufficient number of shares of the closely-held block of our shares of common stock were owned or treated as owned by “qualified stockholders” so it could not be the case that, for more than half of the days in the taxable year, the shares of common stock in the closely-held block not owned or treated as owned by qualified stockholders represented 50% or more of our shares of common stock. For these purposes, a “qualified stockholder” includes an individual that owns or is treated as owning shares of our common stock and is a resident of a jurisdiction that provides an exemption that is equivalent to that provided by Section 883 of the Code and certain other persons; provided in each case that such individual or other person complies with certain documentation and certification requirements set forth in the Section 883 regulations and designed to establish status as a qualified stockholder.

Our Chief Executive Officer, who beneficially owned approximately 20.6%11.1% of our shares of common stock as of April 1, 2013,2016, has entered into an agreement with us regarding his compliance, and the compliance by certain entities that he controls and through which he owns our shares, with the certification procedures designed to establish status as a qualified stockholder. In certain circumstances, his compliance and the compliance of such entities he controls with the terms of that agreement may enable us and our subsidiaries to qualify for the benefits of Section 883 even where persons (each of whom owns, either directly or under applicable attribution rules, 5% or more of our shares) own, in the aggregate, more than 50% of our outstanding shares. However, his compliance and the compliance of such entities he controls with the terms of that agreement may not enable us or our subsidiaries to qualify for the benefits of Section 883. We or any of our subsidiaries may not qualify for the benefits of Section 883 for any year.

If we or our subsidiaries do not qualify for the exemption under Section 883 of the Code for any taxable year, then we or our subsidiaries would be subject for those years to the 4% United States federal income tax on gross United States shipping income or, in certain circumstances, to net income taxation at the standard United States federal income tax rates (and potentially also to a 30% branch profits tax). The imposition of such tax could have a negative effect on our business and would result in decreased earnings available for distribution to our stockholders.

We could become a “passive foreign investment company,” which would have adverse United States federal income tax consequences to United States holders and, in turn, us.

A foreign corporation will be treated as a “passive foreign investment company,” or PFIC, for United States federal income tax purposes if either (1) at least 75% of its gross income for any taxable year consists of certain types of “passive income” or (2) at least 50% of the average value of the corporation’s assets produce or are held for the production of those types of “passive income.” For purposes of these tests, “passive income” includes dividends, interest, and gains from the sale or exchange of investment property and rents and royalties other than rents and royalties which 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 income” and working capital and similar assets held pending investment in vessels will generally be

treated as an asset which produces passive income. United States stockholders of a PFIC are subject to a

disadvantageous United States 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 shares in the PFIC.

In connection with determining our PFIC status we treat and intend to continue to treat the gross income that we derive or are deemed to derive from our time chartering and voyage chartering activities as services income, rather than rental income. We believe that our income from time chartering and voyage chartering activities does not constitute “passive income” and that the assets that we own and operate in connection with the production of that income do not constitute assets held for the production of passive income. We treat and intend to continue to treat, for purposes of the PFIC rules, the income that we derive from bareboat charters as passive income and the assets giving rise to such income as assets held for the production of passive income. There is, however, no legal authority specifically under the PFIC rules regarding our current and proposed method of operation and it is possible that the Internal Revenue Service, or IRS, may not accept our positions and that a court may uphold such challenge, in which case we and certain of our subsidiaries could be treated as PFICs. In this regard we note that a recent federal court decision addressing the characterization of time charters concludes that they constitute leases for federal income tax purposes and employs an analysis which, if applied to our time charters, could result in our treatment and the treatment of our vessel-owning subsidiaries as PFICs. In addition, in making the determination as to whether we are a PFIC, we intend to treat the deposits that we make on our newbuilding contracts and that are with respect to vessels we do not expect to bareboat charter as assets which are not held for the production of passive income for purposes of determining whether we are a PFIC. We note that there is no direct authority on this point and it is possible that the IRS may disagree with our position.

We do not believe that we were a PFIC for 2012.2015. This belief is based in part upon our beliefs regarding the value of the assets that we hold for the production of or in connection with the production of passive income relative to the value of our other assets. Should these beliefs turn out to be incorrect, then we and certain orof our subsidiaries could be treated as PFICs for 2012.2015. In this regard we note that our beliefs and expectations regarding the relative values of our assets place us close to the threshold for PFIC status, and thus a relatively small deviance between our beliefs and expectations and actual values could result in the treatment of us and certain of our subsidiaries as PFICs. There can be no assurance that the U.S. Internal Revenue Service (“IRS”) or a court will not determine values for our assets that would cause us to be treated as a PFIC for 20122015 or a subsequent year. In addition, although we do not believe that we were a PFIC for 2012,2015, we may choose to operate our business in the current or in future taxable years in a manner that could cause us to become a PFIC for those years. Because our status as a PFIC for any taxable year will not be determinable until after the end of the taxable year, and depends upon our assets, income and operations in that taxable year, there can be no assurance that we will not be considered a PFIC for 20132016 or any future taxable year.

If the IRS were to find that we are or have been a PFIC for any taxable year, our United States stockholders would face adverse United States tax consequences. Under the PFIC rules, unless those stockholders make an election available under the Code (which election could itself have adverse consequences for such stockholders, as discussed below under “Item 10. Additional Information—Tax Consequences—United States Federal Income Taxation of United States Holders”), such stockholders would be liable to pay United States federal income tax at the then prevailing income tax rates on ordinary income plus interest upon excess distributions and upon any gain from the disposition of our shares of common stock, as if the excess distribution or gain had been recognized ratably over the stockholder’s holding period of our shares of common stock. See “Item 10. Additional Information—Tax Consequences—United States Federal Income Tax Consequences—United States Federal Income Taxation of United States Holders” for a more comprehensive discussion of the United States federal income tax consequences to United States stockholders if we are treated as a PFIC. As a result of these adverse tax consequences to United States stockholders, such a finding by the IRS may result in sales of our common stock by United States stockholders, which could lower the price of our common stock and adversely affect our ability to raise capital.

Our corporate governance practices are in compliance with the Nasdaq corporate governance standards, however, asAs a foreign private issuer we are entitled to claim an exemption from certain Nasdaq corporate governance standards, and if we elected to rely on this exemption, you may not have the same protections afforded to stockholders of companies that are subject to all of the Nasdaq corporate governance requirements.

Our corporate governance practices are in compliance with the Nasdaq corporate governance standards. As a foreign private issuer, however, we are entitled to claim an exemption from many of Nasdaq’s corporate

governance practices other than the requirements regarding the disclosure of a going concern audit opinion, submission of a listing agreement, notification of material non-compliance with Nasdaq corporate governance practices, and the establishment and composition of an audit and compensation committee and a formal written audit and compensation committee charter. Currently, our corporate governance practices comply with the Nasdaq corporate governance standards applicable to U.S. listed companies other than that, while Nasdaq requires listed companies to obtain prior shareholder approval for certain issuances of authorized stock in transactions not involving a public offering, as permitted under Marshall Islands law and our articles of incorporation and bylaws, we do not intendneed prior shareholder approval to issue shares of authorized stock. To the extent we rely on this exemption; however, if we elected to rely on this exemption for stock issuance or otherwise you may not have the same protections afforded to stockholders of companies that are subject to all of the Nasdaq corporate governance requirements.

We are incorporated in the Republic of the Marshall Islands, which does not have a well-developed body of corporate law.law or a bankruptcy act.

Our corporate affairs are governed by our articles of incorporation and bylaws and by the Marshall Islands Business Corporations Act, or BCA. The provisions of the BCA resemble provisions of the corporation laws of a number of states in the United States. However, there have been few judicial cases in the Republic of the Marshall Islands interpreting the BCA. The rights and fiduciary responsibilities of directors under the law of the Republic of the Marshall Islands are not as clearly established as the rights and fiduciary responsibilities of directors under statutes or judicial precedent in existence in certain U.S. jurisdictions. Stockholder rights may differ as well. While the BCA does specifically incorporate the non-statutory law, or judicial case law, of the State of Delaware and other states with substantially similar legislative provisions, our public stockholders may have more difficulty in protecting their interests in the face of actions by the management, directors or controlling stockholders than would stockholders of a corporation incorporated in a U.S. jurisdiction. The Marshall Islands has no established bankruptcy act, and as a result, any bankruptcy action involving our company would have to be initiated outside the Marshall Islands, and our public stockholders may find it difficult or impossible to pursue their claims in such other jurisdictions.

It may be difficult to enforce service of process and judgments against us and our officers and directors.

We are a Marshall Islands company, and our executive offices are located outside of the United States. All of our directors and officers reside outside of the United States, and most of our assets and their assets are located outside the United States. As a result, you may have difficulty serving legal process within the United States upon us or any of these persons. You may also have difficulty enforcing, both in and outside the United States, judgments you may obtain in the U.S. courts against us or these persons in any action, including actions based upon the civil liability provisions of U.S. federal or state securities laws.

There is also substantial doubt that the courts of the Marshall Islands would enter judgments in original actions brought in those courts predicated on U.S., federal or state securities laws.

Because the Public Company Accounting Oversight Board is not currently permitted to inspect our independent accounting firm, you may not benefit from such inspections.

Auditors of U.S. public companies are required by law to undergo periodic Public Company Accounting Oversight Board, or “PCAOB”, inspections that assess their compliance with U.S. law and professional standards in connection with performance of audits of financial statements filed with the SEC. Certain European Union countries, including Greece, do not currently permit the PCAOB to conduct inspections of accounting firms established and operating in such European Union countries, even if they are part of major international firms. The PCAOB did conduct inspections in Greece in 2008 and evaluated our auditor’s performance of audits of SEC registrants and our auditor’s quality controls. The PCAOB issued its report which can be found on the PCAOB website. Currently however the PCAOB is unable to conduct inspections in Greece until such time as a cooperation agreement between the PCAOB and the Greek Accounting & Auditing Standards Oversight Board (AAOB) is reached. Accordingly, unlike for most U.S. public companies, should the PCAOB again wish to conduct an inspection it is currently prevented from evaluating our auditor’s performance of audits and its quality control procedures, and, unlike stockholders of most U.S. public companies, our stockholders would be deprived of the possible benefits of such inspections.

Risks Related To Our Common Stock

The market price of our common stock has fluctuated and may continue to fluctuate in the future.

The market price of our common stock has fluctuated widely since our initial public offering in October 2005 and may continue to do so as a result of many factors, including our actual results of operations and perceived prospects, the prospects of our competition and of the shipping industry in general and in particular the LPG carrier and product carrier sectors,sector, differences between our actual financial and operating results and those expected by investors

and analysts, changes in analysts’ recommendations or projections, changes in general valuations for companies in the shipping industry, particularly the LPG carrier and product carrier sectors,sector, changes in general economic or market conditions and broad market fluctuations.

If the market price of our common stock again dropsremains below $5.00 per share, under stock exchange rules, our stockholders will not be able to use such shares as collateral for borrowing in margin accounts. This inability to use shares of our common stock as collateral may depress demand and certain institutional investors are restricted from investing in or holding shares priced below $5.00, which could lead to sales of such shares creating further downward pressure on and increased volatility in the market price of our common stock.

Our Board of Directors suspended the payment of cash dividends as a result of market conditions in the international shipping industry, and until such market conditions improve, it is unlikely that we will reinstate the payment of dividends.industry.

In light of the volatile global economic situation, which could reduce the revenues we obtainobtained from chartering our vessels and reduce the market value of our vessels, our Board of Directors decided, in the first quarter of 2009, to suspend dividend payments. As our contracted newbuildings are delivered, paid for and begin to generate revenue, our board of directors will evaluate our dividend policy consistent with our cash flows and liquidity requirements. In addition, other external factors, such as our existing loan agreements, future financing arrangements and capital expenditures, as well as Marshall Islands law, may also restrict or prohibit our declaration and payment of dividends under some circumstances. For instance, we are not permitted to declare or pay cash dividends, or repurchase shares, in any twelve month period that exceed 50% of our free cash flow in the preceding twelve month period. Due to these constraints on dividend payments we may not be able to pay regular quarterly dividends in the future. See “Item 5. Operating and Financial Review and Prospects—Credit Facilities—Financial Covenants.”

The declaration and payment of dividends will be subject at all times to the discretion of our Board of Directors. The timing and amount of future dividends will depend on the state of the LPG carrier markets, our earnings, financial condition, cash requirements and availability, fleet renewal and expansion, restrictions in our loan agreements or other financing arrangements, the provisions of Marshall Islands law affecting the payment of dividends and other factors. Marshall Islands law generally prohibits the payment of dividends other than from surplus or while a company is insolvent or would be rendered insolvent upon the payment of such dividends.

Anti-takeover provisions in our organizational documents and other agreements could make it difficult for our stockholders to replace or remove our current Board of Directors or have the effect of discouraging, delaying or preventing a merger or acquisition, which could adversely affect the market price of our common stock.

Several provisions of our amended and restated articles of incorporation and bylaws could make it difficult for our stockholders to change the composition of our Board of Directors in any one year, preventing them from changing the composition of management. In addition, the same provisions may discourage, delay or prevent a merger or acquisition that stockholders may consider favorable.

These provisions include:

Our current loan agreements also require that our Chief Executive Officer, Harry Vafias, together with his immediate family, at all times own at least 10% of our outstanding capital stock and certain of our loan agreements provide that it would be an event of default if Harry Vafias ceased to serve as an executive officer or director of our company, Harry Vafias together with his immediate family, ceased to control our company or any other person or group controlled 25% or more of the voting power of our outstanding capital stock. These anti-takeover provisions could substantially impede the ability of public stockholders to benefit from a change in control and, as a result, may adversely affect the market price of our common stock and your ability to realize any potential change of control premium.

A. History and Development of the Company

StealthGas Inc. was incorporated in December 2004 in the Republic of the Marshall Islands. Our registered address in the Marshall Islands is Trust Company Complex, Ajeltake Road, Ajeltake Island, Majuro, Marshall Islands MH96960. The name of our registered agent at such address is The Trust Company of the Marshall Islands, Inc. Our principal executive offices are located at 331 Kifissias Avenue, Erithrea 14561 Athens, Greece. Our telephone number for calls originating from the United States is (011) (30) (210) 625-0001.

In October 2005, we completed an initial public offering of 8,000,000 shares of our common stock in the United States and our common stock began trading on the Nasdaq National Market and now trade on the Nasdaq Global Select Market under the symbol “GASS”. On August 1, 2007, we completed a follow-on public offering of 7,660,105 common shares. During 2010, we initiated a share repurchase plan under which we bought back 1,205,229 common shares in 2010 and 551,646 common shares in 2011. The shares we repurchased during 2011 are being held as treasury stock.

Prior to the initial public offering, we owned nine LPG carriers. Since the initial public offering, we acquired an additional 4060 LPG carriers, three product carriers and one Aframax crude oil tanker and sold 1620 LPG carriers so that as of December 31, 2012,2015, we had a fleet of 3351 LPG carriers, including two LPG carriers we charter-in, three product carriers, and one Aframax crude oil tanker.

During 2012,2015, we took delivery of 10 newbuilding LPG carriers and sold two LPG carriers in January and May, respectively, and took delivery of two newbuilding LPG carriers in January and June, respectively.carriers. As of April 1, 2013,2016, we had also taken delivery of one newbuilding LPG carrier in February 2016 and had an agreementagreements to acquire sixfive LPG carriers under construction with expected deliveries in 2014 and 2015 and three secondhandthe period from the third quarter of 2016 to the third quarter of 2017. We sold one 1992-built, 3,500 cbm LPG carriers with expectedcarrier on January 21, 2016 for demolition. Once the delivery in May 2013. Upon completion of these acquisitionsnewbuildings is completed, our fleet will be composed of 4256 LPG carriers, including two vessels that are chartered-in which aggregate 14,717 cbm in capacity, with a total capacity of 211,222 cbm,approximately 253,944 cubic meters (cbm), three medium range product carriers with a total capacity of 140,000 dwt and one 115,804 dwt Aframax tanker, assuming no other acquisitions or disposals.

Our company operates through a number of subsidiaries which either directly or indirectly own or charter in the vessels in our fleet. A list of our subsidiaries, including their respective jurisdiction of incorporation, as of April 1, 20132016, all of which are wholly-owned by us, is set forth in Exhibit 8 to this Annual Report on Form 20-F.

B. Business Overview

We own a fleet of LPG carriers providing international seaborne transportation services to LPG producers and users, as well as crude oil and product carriers chartered to oil producers, refiners and commodities traders. Our LPG carriers carry various petroleum gas products in liquefied form, including propane, butane, butadiene, isopropane, propylene and vinyl chloride monomer, which are all byproducts of the production of crude oil and

natural gas. The three medium range product carriers in our fleet are capable of carrying refined petroleum

products such as gasoline, diesel, fuel oil and jet fuel, as well as edible oils and chemicals, while our Aframax tanker is used for carrying crude oil. We believe that we have established a reputation as a safe, cost-efficient operator of modern and well-maintained LPG carriers. We also believe that these attributes, together with our strategic focus on meeting our customers’ chartering needs, has contributed to our ability to attract leading charterers as our customers and to our success in obtaining charter renewals. We are managed by Stealth Maritime, a privately owned company controlled by other members of the Vafias Group.family, of which our Chief Executive Officer is a member.

As of April 1, 2013,2016, our fleet consisted of 3351 LPG carriers, including two chartered-in LPG carriers, with an average age of 11.89.4 years, two 2008-built product carriers, one 2009-built product carrier and one 2010-built Aframax crude oil tanker. We also have four newbuildingagreements to acquire five LPG carriers, which are scheduled to be delivered in 2014 and 2015. In March 2013, we entered into agreementsthe period from the third quarter of 2016 to acquire three 2006-built LPG carriers which are scheduled to be delivered to us in May 2013 and two newbuildings which are scheduled to be delivered to us in 2014.the third quarter of 2017.

The table below describes our fleet and its deployment as of April 1, 2013.2016.

LPG Carriers (51 Vessels)

Name		Year Built		Vessel Size (cbm)		Vessel Type		Employment Status		Expiration of Charter(1)
Eco Loyalty(5)(6)		2015		3,529		fully-pressurized		Bareboat Charter		June 2022
Eco Elysium(5)		2014		3,526		fully-pressurized		Bareboat Charter		September 2021
Eco Royalty(5)(6)		2015		3,525		fully-pressurized		Bareboat Charter		April 2022
Eco Corsair		2014		3,524		fully-pressurized		Spot		—
Eco Lucidity		2015		3,517		fully-pressurized		Spot		—
Gas Evoluzione		1996		3,517		fully-pressurized		Spot		—
Gas Imperiale		2008		3,515		fully-pressurized		Time Charter		December 2016
Gas Legacy		1998		3,514		fully-pressurized		Spot		—
Gas Astrid(3)		2009		3,514		fully-pressurized		Bareboat Charter		April 2022
Gas Enchanted		2006		3,514		fully-pressurized		Spot		—
Gas Exelero(3)		2009		3,513		fully-pressurized		Bareboat Charter		June 2022
Gas Alice		2006		3,513		fully-pressurized		Spot		—
Gas Ice		1991		3,436		semi-refrigerated		Time Charter		May 2016
Gas Galaxy		1997		3,312		fully-pressurized		Time Charter		January 2018
Gas Pasha		1995		3,310		fully-pressurized		Spot		—
				253,944 cbm

Contracted Newbuilding LPG Carriers (5 Vessels)

Product Carriers/Crude Oil Tanker (4 Vessels)

Product Carriers/Crude Oil Tanker

LPG Carriers to be delivered

Commercial and Technical Management of Our Fleet

We have a management agreement with Stealth Maritime, pursuant to which Stealth Maritime provides us with technical, administrative, commercial and certain other services. Stealth Maritime is a leading ship-management company based in Greece, established in 1999 in order to provide shipping companies with a range of services. Our manager’s safety management system is ISM certified in compliance with IMO’s regulations by Lloyd’s Register. In relation to the technical services, Stealth Maritime is responsible for arranging for the crewing of the vessels, the day to day operations, inspections and vetting, maintenance, repairs, drydocking and insurance. Administrative functions include but are not limited to accounting, back-office, reporting, legal and secretarial services. In addition, Stealth Maritime provides services for the chartering of our vessels and monitoring thereof, freight collection, and sale and purchase. In providing most of these services, Stealth Maritime pays third parties and receives reimbursement from us. In addition, Stealth Maritime may subcontract technical management and crew management for some of our vessels to third parties, including Selandia, a ship management company based in Singapore Swan Shipping Corporationand Manila, Southfield Agencies, based in Manila and Brave Maritime (an affiliate of Stealth Maritime) based in Greece. These three technical managers are supervised by Stealth Maritime. As of April 1, 2016, the technical management of seven of our ships was subcontracted by Stealth Maritime to Brave Maritime.

Under the November 2006 agreement, which was amended effective January 1, 2007, as approved by our Board of Directors, including all of our independent directors, we pay Stealth Maritime a fixed management fee

of $440 per vessel operating under a voyage or time charter per day on a monthly basis in advance, pro ratedpro-rated for the calendar days we own the vessels. We pay a fixed fee of $125 per vessel per day for each of our vessels operating on bareboat charter. We are also obligated to pay Stealth Maritime a fee equal to 1.25% of the gross freight, demurrage and charter hire collected from the employment of our vessels. Stealth Maritime will also earn a fee equal to 1.0% of the contract price of any vessel bought or sold by them on our behalf. In addition, as long as Stealth Maritime (or an entity with respect to which Harry N. Vafias is an executive officer, director or the principal shareholder) is our fleet manager or Harry N. Vafias is an executive officer or director of the Company, Stealth Maritime has granted us a right of first refusal to acquire any LPG carrier which Stealth Maritime may acquire in the future. In addition, Stealth Maritime has agreed that it will not charter-in any LPG carrier without first offering the opportunity to charter-in such vessels to us. This right of first refusal does not prohibit Stealth Maritime from managing vessels owned by unaffiliated third parties in competition with us, nor does it cover product carriers or crude oil tankers. Additional vessels that we may acquire in the future may be managed by Stealth Maritime, which is an affiliate of the Vafias Group, or by other unaffiliated management companies.

The initial term of our management agreement with Stealth Maritime expired in June 2010; however, unless six months’ notice of non renewalnon-renewal is given by either party prior to the end of the then current term, this agreement automatically extends for additional 12 month periods. No such notice has been given, and accordingly, this agreement will extend to June 2014.2017.

For additional information about the management agreement, including the calculation of management fees, see “Item 7. Major Shareholders and Related Party Transactions” and our consolidated financial statements which are included as Item 18 to this Annual Report.

Crewing and Employees

Stealth Maritime ensures that all seamen have the qualifications and licenses required to comply with international regulations and shipping conventions, and that our vessels employ experienced and competent personnel. In 2015 Selandia (Singapore),crew management, Southfield agencies and PTC, a crew agenteach of which is based in the Philippines, and Swan Shipping arewere responsible for providing the crewing of the LPG fleet, to the extent that these vessels are not deployed on bareboat charters. These responsibilities include training, compensation, transportation and insurance of the crew.

Chartering of the Fleet

We, through Stealth Maritime, manage the employment of our fleet. We deploy our LPG carriers and tankers on period charters, including time and bareboat charters that can last up to several years, and spot market charters (through voyage charters and short-term time charters), which generally last from one to six months, subject to market conditions. Time and bareboat charters are for a fixed period of time. A voyage charter is

generally a contract to carry a specific cargo from a loading port to a discharging port for an agreed-upon total charge. Under voyage charters we pay for voyage expenses such as port, canal and fuel costs. Under a time charter the charterer pays for voyage expenses while under a bareboat charter the charterer pays for voyage expenses and operating expenses such as crewing, supplies, maintenance and repairs including special survey and dry-docking costs.

Vessels operating in the spot market generate revenues that are less predictable but may enable us to capture increased profit margins during periods of improvements in LPG charter rates, although we are then exposed to the risk of declining LPG carrier charter rates. Typically spot market charters can last from a few days up to two months. If we commit vessels to period charters, future spot market rates may be higher or lower than those rates at which we have period chartered our vessels.

In formulating our chartering strategy we evaluate past, present and future performance of the freight markets and balance the mix of our chartering arrangements in order to achieve optimal results for the fleet. As of April 1, 2013,2016 and including our two chartered in vessels, we had eight13 LPG carriers operating in the spot market, four15 vessels on time charters expiring in 2013, 122016, 13 on time charters expiring beyond 2013 upfrom 2017 to 20172020 and 1314 on bareboat charters expiring from 20142016 to

2017. 2022. In terms of charter coverage of the available calendar days of our fleet as of April 1, 20132016, we had 76%62% of the available calendar days fixed under period charters for 2013,2016, and 46%32% for 2014;2017; in each case excluding the ninefive LPG carriers, one to be delivered in the third quarter of 2016 and four in 2017 that we have contracted to acquire for which weacquire. We have not yet arranged employment.employment for the four vessels scheduled to be delivered in 2017.

While the majority of our fleet is operating in the Far East, we deploy vessels globally. Some of the areas where we usually operate are the Middle East, the Mediterranean, North West Europe and Latin America. According to industry reports the United States may increase its exports of LPG products in the near future. In the event this creates more demand for vessels like ours, we would expect to deploy more vessels in the United States and the Caribbean. As freight rates usually vary between these areas as well as voyage and operating expenses, we evaluate such parameters when positioning our vessels for new employment.

Customers

Our assessment of a charterer’s financial condition and reliability is an important factor in negotiating employment for our vessels. Principal charterers include producers of LPG products, such as national, major and other independent energy companies and energy traders, and industrial users of those products. For the year ended December 31, 20122015, we had 4455 customers, with one customer accountingaccountable for more than 10% of our total revenues, namely Petredec which accounted for 12.5%generating 13% of ourthe total revenues. In addition, vessels under bareboat charter may be sub-chartered to third parties.

Environmental and other Regulations

Government regulations significantly affect the ownership and operation of our vessels. They are subject to international conventions and national, state and local laws and regulations in force in the countries in which they may operate or are registered.

A variety of governmental and private entities subject our vessels to both scheduled and unscheduled inspections. These entities include the local port authorities (United States Coast Guard, harbor master or equivalent), classification societies, flag state administration (country of registry), charterers and particularly terminal operators. Certain of these entities require us to obtain permits, licenses, certificates and financial assurances for the operation of our vessels. Failure to maintain necessary permits or approvals could require us to incur substantial costs or result in the temporary suspension of operation of one or more of our vessels.

We believe that the heightened level of environmental and quality concerns among insurance underwriters, regulators and charterers is leading to greater inspection and safety requirements on all vessels and may accelerate the scrapping of older vessels throughout the industry. Increasing environmental concerns have created a demand for vessels that conform to the stricter environmental standards. We are required to maintain operating standards for all of our

vessels that emphasize operational safety, quality maintenance, continuous training of our officers and crews and compliance with United States and international regulations. We believe that the operation of our vessels is in substantial compliance with applicable environmental laws and regulations. However, because such laws and regulations are frequently changed and may impose increasingly stricter requirements, any future requirements may limit our ability to do business, increase our operating costs, force the early retirement of one or more of our vessels, and/or affect their resale value, all of which could have a material adverse effect on our financial condition and results of operations.

Environmental Regulations—International Maritime Organization (“IMO”)

The International Maritime Organization (“IMO”) (the, the United Nations agency for maritime safety and the prevention of pollution by ships),ships, has negotiated international conventions relating to pollution by ships. In 1973, IMO adopted the International Convention for the Prevention of Pollution from Ships (“MARPOL”), which has been periodically updated with relevant amendments. MARPOL addresses pollution from ships by oil, by noxious liquid substances carried in bulk, harmful substances carried by sea in packaged form, sewage, garbage, and air emissions. Our vessels are subject to standards imposed by the IMO.

In September 1997, the IMO adopted MARPOL Annex VI to address air pollution from ships. Effective in May 2005, Annex VI setsset limits on sulfur oxide and nitrogen oxide emissions from ship exhausts and prohibitsprohibited deliberate emissions of ozone depleting substances, such as chlorofluorocarbons. Annex VI also includesincluded a global cap on the sulfur content of fuel oil and allowsallowed for special areas to be established with more stringent controls on sulfur emissions. Options for implementing the requirements of Annex VI include use of low sulfur fuels, modifications to vessel engines, or the addition of post combustion emission controls. Annex VI has been ratified by some, but not all IMO member states. Vessels that are subject to Annex VI must, if built before the effective date, obtain an International Air Pollution Prevention Certificate evidencing compliance with Annex VI not later than either the first dry docking after May 19, 2005, but no later than May 19, 2008. All vessels subject to Annex VI and built after May 19, 2005 must also have this Certificate.

In October 2008, the IMO adopted amendments to Annex VI, and United States ratified the Annex VI amendments in October 2008. Beginning in 2011 the amendments required a progressive reduction of sulfur dioxide levels in bunker fuels to be phased in by 2020 and imposeimposed more stringent nitrogen oxide emission standards on marine diesel engines, depending on their date of installation. As of,Since January 1, 2012, the amended Annex VI requiresrequired that fuel oil contain no more than 3.50% sulfur. More stringent emission standards will apply in coastal areas designated by the IMO as Emission Control Areas, or ECAs, such as the Baltic and North Seas, United States and Canadian coastal areas, designated by IMO.and the United States Caribbean Sea. As of January 1, 2015, vessels operating within an ECA must use fuel with a sulfur content that does not exceed 0.10%. We have obtained International Air Pollution Prevention Certificates for all of our vessels and believe they are compliant in all material respects with current Annex VI requirements. We may incur costs to comply with the newamended Annex VI requirements.

Our LPG carriers must have an IMO Certificate of Fitness demonstrating compliance with construction codes for LPG carriers. These codes, and similar regulations in individual member states, address fire and explosion risks posed by the transport of liquefied gases. Collectively, these standards and regulations impose detailed requirements relating to the design and arrangement of cargo tanks, vents, and pipes; construction materials and compatibility; cargo pressure; and temperature control. All of our LPG carriers have Certificates of Fitness and we intend to obtain such certificates for the vessels that we have agreed to acquire.

Many countries have ratified and follow the liability plan adopted by the IMO and set out in the International Convention on Civil Liability for Oil Pollution Damage of 1969 (the CLC) (the United States, with its separate OPA 90 regime described below, is not a party to the CLC). This convention generally applies to vessels that carry oil in bulk as cargo. Under this convention and depending on whether the country in which the damage results is a party to the 1992 Protocol to the CLC, the registered owner of a regulated vessel is strictly liable for pollution damage in the territorial waters or exclusive economic zone of a contracting state caused by the discharge of any oil from the ship, subject to certain defenses. Under an amendment to the 1992 Protocol that became effective on November 1, 2003, for vessels of 5,000 to 140,000 gross tons, liability per incident is limited to 4.51 millionmillion. Special Drawing Rights (SDR)

plus 631 SDR for each additional gross ton over 5,000. The SDR is an International Monetary Fund unit pegged to a basket of currencies. The exchange rate between SDRs and U.S. dollars was 1.54 U.S dollars per SDR unit on December 28, 2012. The right to limit liability under the CLC is forfeited where the spill is caused by the owner’s actual fault and, under the 1992 Protocol, where the spill is caused by the owner’s intentional or reckless conduct. Vessels trading to states that are parties to the CLC must provide evidence of insurance covering the liability of the owner. In jurisdictions where the CLC has not been adopted, various legislative schemes or common law regimes govern, and liability is imposed either on the basis of fault or in a manner similar to that convention. We believe that our P&I insurance will cover any liability under the CLC.

In 2001, the IMO adopted the International Convention on Civil Liability for Bunker Oil Pollution Damage, or the Bunker Convention, which imposes strict liability on ship owners for pollution damage caused by discharges of bunker oil in jurisdictional waters of ratifying states. The Bunker Convention also requires registered owners of ships over 1,000 gross tons to maintain insurance for pollution damage in an amount equal to the limits of liability under the applicable national or international limitation regime (but not exceeding the amount calculated in accordance with the Convention on Limitation of Liability for Maritime Claims of 1976, as

amended). Because the Bunker Convention does not apply to pollution damage governed by the CLC, it applies only to discharges from any of our vessels that are not transporting oil. The Bunker Convention entered into force on November 21, 2008 and as of March 31, 2013,10, 2015, has been ratified by 6878 states. In other jurisdictions, liability for spill or releases of oil from ship’s bunkers typically is determined by national or other domestic laws in the jurisdiction where the events occur.

Our LPG vessels and product carriers may also become subject to the International Convention on Liability and Compensation for Damage in Connection with the Carriage of Hazardous and Noxious Substances by Sea adopted in 1996 as amended by the Protocol to the HNS Convention, adopted in April 2010 (2010 HNS Protocol) (collectively, 2010the “2010 HNS Convention)Convention”), if it enters into force. The Convention creates a regime of liability and compensation for damage from hazardous and noxious substances (or HNS), including liquefied gases. The 2010 HNS Convention sets up a two-tier system of compensation composed of compulsory insurance taken out by ship owners and an HNS Fund which comesthat will come into play when the insurance is insufficient to satisfy a claim or does not cover the incident. Under the 2010 HNS Convention, if damage is caused by bulk HNS, claims for compensation will first be sought from the ship owner up to a maximum of 100 million Special Drawing Rights (or SDR). If the damage is caused by packaged HNS or by both bulk and packaged HNS, the maximum liability is 115 million SDR. Once the limit is reached, compensation will be paid from the HNS Fund up to a maximum of 250 million SDR. The 2010 HNS Convention has not been ratified by a sufficient number of countries to enter into force, and at this time we cannot estimate with any certainty the costs that may be needed to complyof compliance with its requirements should it enter into force.

In addition, theThe IMO adopted anthe International Convention for the Control and Management of Ships’ Ballast Water and Sediments, or the BWM Convention, in February 2004. The BWM Convention’s implementing regulations call for a phased introduction of mandatory ballast water exchange requirements to be replaced in time with mandatory concentration limits. Upon entry into force of the BWM Convention, mid-ocean ballast exchange would be mandatory. 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. TheAs of March 31, 2016 the BWM Convention had been adopted by 49 states, representing approximately 34.82% of the world’s tonnage. Accordingly while the BWM Convention has not yet been adopted by a sufficient number of states with sufficient tonnage to enter into force. Uponforce, it may be in the near future. Many of the implementation dates in the BWM Convention have already passed, so, on December 4, 2013, the IMO Assembly passed a resolution revising the dates of applicability of the requirements of the BWM Convention so that they will be triggered by the entry into force date, and not the dates originally in the BWM Convention. This, in effect, makes all vessels constructed before the entry into force date “existing vessels” and delays the date for installation of ballast water management systems until the first renewal survey following entry into force of the BWM Convention,Convention. When mid-ocean ballast exchange would be mandatory. Vessels would be required to be equipped with a ballast water treatment system that meets mandatory concentration limits not later than the first intermediate or renewal survey, whichever occurs first, after the anniversary date of delivery of the vessel in 2014, for vessels with ballast water capacity of 1500-5000 cubic meters, or after such date in 2016, for vessels with ballast water capacity of greater than 5000 cubic meters. If ballast water treatment requirements become mandatory, the cost of compliance could increase for our vessels, although it is difficult to predict the overall impact of such a requirement on our operations.

The operation of our vessels is also affected by the requirements set forth in the ISM Code of the IMO. The ISM Code requires shipowners and bareboat charterers to develop and maintain an extensive SMS that includes the adoption of a safety and environmental protection policy setting forth instructions and procedures for safe

operation and describing procedures for dealing with emergencies. Vessel operators must obtain a “Safety Management Certificate” from the government of the vessel’s flag state to verify that it is being operated in compliance with its approved SMS. The failure of a ship owner or bareboat charterer to comply with the ISM Code may subject such party to increased liability, decrease available insurance coverage for the affected vessels and result in a denial of access to, or detention in, certain ports. Currently, each of the vessels in our fleet is ISM code-certified. However, there can be no assurance that such certification will be maintained indefinitely.

The operations of our product carriers are subject to compliance with the IMO’s International Code for the Construction and Equipment of Ships carrying Dangerous Chemicals in Bulk (IBC Code) for chemical tankers built after July 1, 1986. The IBC Code includes ship design, construction and equipment requirements and other standards for the bulk transport of certain liquid chemicals. Amendments to the IBC Code pertaining to revised international certificates of fitness for the carriage of dangerous goods entered into force in June 2014. We may need to make certain expenditures to comply with these amendments.

Environmental Regulations—The United States Oil Pollution Act of 1990 (“OPA”) and the U.S. Comprehensive Environmental Response, Compensation, and Liability Act (“CERCLA”)

The United States Oil Pollution Act of 1990, or OPA, established an extensive regulatory and liability regime for the protection and cleanup of the environment from oil spills. OPA applies to discharges of any oil from a vessel, including discharges of fuel oil (bunkers) and lubricants. OPA affects all owners and operators whose vessels trade in the United States, its territories and possessions or whose vessels operate in United States waters, which include the United States’ territorial sea and its two hundred nautical mile exclusive economic zone. The United States has also enacted the Comprehensive Environmental Response, Compensation and Liability Act, or CERCLA, which applies to the discharge of hazardous substances other than oil, whether on land or at sea. OPA and CERCLA both define “owner and operator” in the case of a vessel as any person owning, operating or chartering by demise, the vessel. Accordingly, both OPA and CERCLA impact our operations.

Under OPA, vessel owners, operators and bareboat charterers are “responsible parties” and are jointly, severally and strictly liable (unless the discharge of pollutants results solely from the act or omission of a third party, an act of God or an act of war) for all containment and clean-up costs and other damages arising from discharges or threatened discharges of pollutants from their vessels. OPA broadly defines these other damages to include:

Effective July 31, 2009, the United States Coast Guard adjusted theThe current limits of OPA liability toare the greater of $2,000$2,200 per gross ton or $17,088,000$18,796,800 for double-hulled tank vessels, and established a proceduresubject to periodic adjustment for adjusting the limits every three years.inflation. These limits of liability do not apply if an incident was directly caused by violation of applicable United States federal safety, construction or operating regulations or by a responsible party’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 oil removal activities. Although the May 2010 oil spill disaster in the Gulf of Mexico resulted from the explosion of a deepwater drilling rig, legislation has been introduced in both houses of the United States Congress to substantially increase the limits of liability for all vessels.

OPA requires owners and operators of vessels over 300 gross tons to establish and maintain with the United States Coast Guard evidence of financial responsibility sufficient to meet their potential liabilities under the OPA. Under the United States Coast Guard regulations implementing OPA, vessel owners and operators may evidence their financial responsibility by showing proof of insurance, surety bond, self-insurance, or guaranty. Under the OPA regulations, an owner or operator of a fleet of vessels is required only to demonstrate evidence of financial responsibility in an amount sufficient to cover the vessels in the fleet having the greatest maximum liability under OPA.

CERCLA contains a similar liability regime whereby owners and operators of vessels are liable for cleanup, removal and remedial costs, as well as damage for injury to, or destruction or loss of, natural resources, including the reasonable costs associated with assessing same, and health assessments or health effects studies. There is no liability if the discharge of a hazardous substance results solely from the act or omission of a third party, an act of God or an act of war. Liability under CERCLA is limited to the greater of $300 per gross ton or $5 million for vessels carrying a hazardous substance as cargo and the greater of $300 per gross ton or $500,000 for any other vessel. These limits do not apply (rendering the responsible person liable for the total cost of response and damages) if the release or threat of release of a hazardous substance resulted from willful misconduct or

negligence, or the primary cause of the release was a violation of applicable safety, construction or operating standards or regulations. The limitation on liability also does not apply if the responsible person fails or refused to provide all reasonable cooperation and assistance as requested in connection with response activities where the vessel is subject to OPA.

We currently maintain, for each of our vessels, pollution liability coverage insurance in the amount of $1 billion per incident. In addition, we carry hull and machinery and protection and indemnity insurance to cover the risks of fire and explosion. Under certain circumstances, fire and explosion could result in a catastrophic loss. While we believe that our present insurance coverage is adequate, 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. If the damages from a catastrophic spill exceeded our insurance coverage, it would have a severe effect on us and could possibly result in our insolvency.

The United States Coast Guard’s regulations concerning certificates of financial responsibility provide, in accordance with OPA, that claimants may bring suit directly against an insurer or guarantor that furnishes certificates of financial responsibility. In the event that such insurer or guarantor is sued directly, it is prohibited from asserting any contractual defense that it may have had against the responsible party and is limited to asserting those defenses available to the responsible party and the defense that the incident was caused by the willful misconduct of the responsible party. Certain organizations, which had typically provided certificates of financial responsibility under pre-OPA 90 laws, including the major protection and indemnity organizations, have declined to furnish evidence of insurance for vessel owners and operators if they are subject to direct actions or required to waive insurance policy defenses.

OPA and CERCLA both require owners and operators of vessels to establish and maintain with the U.S. Coast Guard evidence of financial responsibility sufficient to meet the maximum amount of liability to which the particular responsible person may be subject. Vessel owners and operators may satisfy their financial responsibility obligations by providing a proof of insurance, a surety bond, qualification as a self-insurer or a guarantee. Under the self-insurance provisions, the ship owner 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 United States Coast Guard regulations by providing a financial guaranty evidencing sufficient self-insurance.

OPA specifically permits individual states to impose their own liability regimes with regard to oil pollution incidents occurring within their boundaries, and some states have enacted legislation providing for unlimited liability for oil spills. In some cases, states, which have enacted such legislation, have not yet issued implementing regulations defining vessels owners’ responsibilities under these laws. We intend to comply with all applicable state regulations in the ports where our vessels call.

Although the 2010 oil spill disaster in the Gulf of Mexico involved a drilling rig and well, it may result in additional legislative or regulatory initiatives for all vessels, including the raising or elimination of liability caps under OPA or more stringent operational requirements. We cannot predict what additional requirements may be enacted and what effect, if any, such requirements may have on our operations.

Environmental Regulations—Other Environmental Initiatives

The EU has also adopted legislation that: (1) requires member states to refuse access to their ports to certain sub-standard vessels, according to vessel type, flag and number of previous detentions; (2) creates an obligation on member states to inspect at least 25% of vessels using their ports annually and provides for increased surveillance of vessels posing a high risk to maritime safety or the marine environment; (3) 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,societies; and (4) requires member states to impose criminal sanctions for certain pollution events, such as the unauthorized discharge of tank washings. It is impossible to predict what additional legislation or regulations, if any, may be promulgated by the EU or any other country or authority.

On March 23, 2012, the U.S. Coast Guard adopted new ballast water discharge standards under the U.S. National Invasive Species Act, or NISA. The regulations, which became effective on June 21, 2012, set maximum acceptable discharge limits for living organisms and establishestablished standards for ballast water management

systems.management systems, and they are consistent with the requirements under the 2004 BWM Convention described above. The new requirements are being phased in based on the size of the vessel and its next drydocking date and could requiredate. However, the installation of equipment on our vessels to treatU.S. Coast Guard must approve any ballast water management technology before it is discharged or the implementation of other port facility disposal arrangements or procedures, and/or could otherwise restrict our vessels from entering U.S. waters.placed on a vessel, but has yet to do so.

The U.S. Clean Water Act (“CWA”) prohibits the discharge of oil or hazardous substances in navigable waters and imposes strict liability in the form of penalties for any unauthorized discharges. The CWA also imposes substantial liability for the costs of removal, remediation and damages and complements the remedies available under OPA 90. Under U.S. Environmental Protection Agency (“EPA”) regulations we are required to obtain a CWA permit to discharge ballast water and other wastewaters incidental to the normal operation of our vessels if we operate within the three mile territorial waters or inland waters of the United States. This permit, which the EPA has designated as the Vessel General Permit for Discharges Incidental to the Normal Operation of Vessels, or VGP, incorporates the current U.S. Coast Guard requirements for ballast water management, as well as supplemental ballast water requirements, and includes requirements applicable to 26 specific discharge streams, such as deck runoff, bilge water and gray water. The U.S. Coast Guard and the EPA have entered into a memorandum of understanding which provides for collaboration on the enforcement of the VGP requirements. As a result, it is expected that the U.S. Coast Guard will include the VGP as part of its normal Port State Control inspections. On March 28, 2013, theThe EPA issued a new VGP to replace the existing VGP when it expiresthat became effective in December 2013. Among other things, it contained numeric ballast water discharge limits for most vessels and more stringent requirements for exhaust gas scrubbers and required the use of environmentally friendly lubricants. We have submitted NOI (NoticeNOIs (Notices Of Intent) for dischargesDischarges Incidental to the Normal Operation of a Vessel under the existing2013 VGP to the USU.S. EPA for all our ships trading in US waters,U.S. waters. Vessels are subject to the EPA and intendCoast Guard ballast water management requirements despite the lack of U.S. Coast Guard—approved ballast water management technology. The U.S. Coast Guard has provided waivers to obtain coverage undervessels that cannot install the new VGP for such vessels. Weas-yet unapproved technology. The EPA, on the other hand, has taken a different approach to enforcing the ballast water management standards in the 2013 VGP. Under a December 27, 2013 policy the agency may consider why vessels do not believe thathave the costs associated with complyingrequisite ballast water management technology installed when taking actions to compel compliance with the obligationsrequirements of the existing2013 VGP. The ballast water management standards of the 2013 VGP were challenged by the Canadian Shipowners’ Association in the U.S. Second Circuit Court of Appeals. The U.S. Second Circuit Court of Appeals ruled on October 5, 2015 that EPA acted arbitrarily and capriciously with respect to certain of the ballast water provisions in the 2013 VGP. The Court remanded the issue to EPA to either justify its approach in the 2013 VGP or redraft the ballast water sections of the VGP consistent with the Court’s ruling. In the meantime, the 2013 VGP will have a material impactremain in effect. Compliance with the EPA and Coast Guard ballast water management regulations could require the installation of equipment on our operations, but wevessels to treat ballast water before it is discharged or the implementation of other port facility disposal arrangements at potentially substantial cost, or may incur costs to comply with the new VGP.otherwise restrict our vessels from entering U.S. waters.

Climate Control Initiatives

Although the Kyoto Protocol to the United Nations Framework Convention on Climate Change requires adopting countries to implement national programs to reduce emissions of greenhouse gases, emissions of greenhouse gases from international shipping are not currently subject to the Kyoto Protocol. No new treaty was adopted at the December 2010 United Nations Climate Change Conference in Cancun, but agreements were signed extending the deadline for deciding whether to extend the validity of the Kyoto Protocol and requiring developed countries to raise the levels of their emission reductions while assisting less developed countries to do the same. The Kyoto Protocol was extended to 2020 at the 2012 United Nations Climate Change Conference, with the hope that a new climate change treaty would be adopted by 2015 and come into effect by 2020. There is pressureThe Paris Agreement adopted under the United Nations Framework Convention on Climate Change in December 2015, contemplates commitments from each nation party thereto to take action to reduce greenhouse gas emissions and limit increases in global temperatures but did not include any restrictions or other measures specific to shipping emissions. However, restrictions on shipping emissions are likely to continue to be considered and a new treaty may be adopted in any new treaty.the future that includes restrictions on shipping emissions. International or multi-national bodies or individual countries may adopt their own climate change regulatory initiatives. The EU intends to expand its existing emissions trading scheme to vessels, and IMO’s Marine Environment Protection Committee has adopted two new sets of mandatory requirements to address greenhouse gas emissions from shipping.shipping that entered into force in January 2013. The Energy Efficiency Design Index establishes minimum energy

efficiency levels per capacity mile and will applyapplies to new vessels. Currently operating vessels must develop and implement Ship Energy Efficiency Plans. These new requirements entered into force in January 2013 and could cause us to incur additional costs to comply. The IMO is also considering the development of market-based mechanisms for limiting greenhouse gas emissions from ships, but it is impossible to predict the likelihood of adoption of such a standard or the impact on our operations. In April 2015, the EU adopted regulations requiring the monitoring and reporting of greenhouse gas emissions from marine vessels (of over 5,000 gross tons) beginning in January 2018. Negotiators from the European Parliament and the European Union Council provisionally adopted rules to implement the strategy and the European Parliament and Council of Ministers are expected to formally endorse the regulations. The United States EPA has issued a finding that greenhouse gas emissions endanger the public health and safety and has adopted regulations under the Clean Air Act to limit emissions of greenhouse gases from certain mobile sources and proposed regulations to limit greenhouse gas emissions from large stationary sources. Although the mobile source regulations do not apply to greenhouse gas emissions from vessels, EPA is considering a petition from the California Attorney General and environmental groups to regulate greenhouse gas emissions from ocean-going vessels. Any passage of climate control initiatives by the IMO, the EU or the individual countries in which we operate that limit greenhouse gas emissions from vessels could require us to limit our operations or make significant financial expenditures that we cannot predict with certainty at this time. Passage of climate control initiatives that affect the demand for LPG products and oil may also materially affect our business. Even in the absence of climate control legislation and regulations, our business may be materially affected to the extent that climate change may result in sea level changes or more intense weather events.

Vessel Security Regulations

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, or MTSA, came into effect in the United States. To implement certain portions of the MTSA, in July 2003, the United States 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 the International Convention for the Safety of Life at Sea, or SOLAS, created a new chapter of the convention dealing specifically with maritime security. The new chapter went into effect in July 2004, and imposes various detailed security obligations on vessels and port authorities, most of which are contained in the newly created International Ship and Port Facilities Security or, ISPS, Code. Among the various requirements are:

The United States Coast Guard regulation’s aim to align with international maritime security standards exempted non-United States vessels from MTSA vessel security measures provided such vessels have on board, by July 1, 2004, a valid International Ship Security Certificate (ISSC) that attests to the vessel’s compliance with SOLAS security requirements and the ISPS Code. We have obtained ISSCs for all of our vessels and implemented the various security measures addressed by the MTSA, SOLAS and the ISPS Codes to ensure that our vessels attain compliance with all applicable security requirements within the prescribed time periods. We do not believe these additional requirements will have a material financial impact on our operations.

Classification and Inspection

All our vessels are certified as being “in class” by a classification society member of the International Association of Classification Societies such as Lloyds Register of Shipping, Bureau Veritas, the American Bureau of

Shipping, RINA SpA, DNV and RINA SpA.Nippon Kaiji Kyokai. All new and secondhand vessels that we purchase must be certified prior to their delivery under our standard contracts and memoranda of agreement. If the vessel is not certified on the date of closing, we have no obligation to take delivery of the vessel. Most insurance underwriters make it a condition for insurance coverage that a vessel be certified as “in class” by a classification society that is a member of the International Association of Classification Societies. Every vessel’s hull and machinery is “classed” by a classification society authorized by its country of registry. The classification society certifies that the vessel has been built and maintained in accordance with the rules of such classification society and complies with applicable rules and regulations of the country of registry of the vessel and the international conventions of which that country is a member. Each vessel is inspected by a surveyor of the classification society every year—an annual survey, every two to three years—an intermediate survey, and every four to five years—a special survey. Vessels also may be required, as part of the intermediate survey process, to be dry-docked every 30 to 36 months for inspection of the underwater parts of the vessel and for necessary repairs related to such inspection; alternatively, such requirements may be met concurrently with the special survey.

In addition to the classification inspections, many of our customers, including the major oil companies, regularly inspect our vessels as a precondition to chartering voyages on these vessels. We believe that our well-maintained, high quality tonnage should provide us with a competitive advantage in the current environment of increasing regulationregulations and customer emphasis on quality of service.

All areas subject to surveysurveys 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.

Vessels are drydocked for the special survey for inspection of the underwater parts and for repairs related to inspections. If any defects are found, the classification surveyor will issue a “recommendation” which must be rectified by the ship owner within the prescribed time limits.

Risk of Loss and Liability Insurance

General

The operation of any cargo vessel includes risks such as mechanical failure, physical damage, collision, property loss, cargo loss or damage and business interruption due to political circumstances in foreign countries, hostilities and labor strikes. In addition, there is always an inherent possibility of marine disaster, including environmental mishaps, and the liabilities arising from owning and operating vessels in international trade. While we believe that our present insurance coverage is adequate, 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.

Hull and Machinery Insurance

We have obtained marine hull and machinery and war risk insurance, which includesinclude the risk of actual or constructive total loss, for all of our vessels. The vessels are each covered up to at least fair market value, with deductibles of $60,000$100,000 per vessel.

We also maintain increased value insurance for most of our vessels. Under the increased value insurance, in case of total loss of the vessel, we will be able to recover the sum insured under the increased value policy in addition to the sum insured under the Hull and Machinery policy. Increased value insurance also covers excess liabilities which are not recoverable in full by the Hull and Machinery policies by reason of under insurance.

Protection and Indemnity Insurance

Protection and indemnity insurance, a form of mutual indemnity insurance, which covers our third party liabilities in connection with our shipping activities, is provided by mutual protection and indemnity associations,

or P&I Associations or “clubs.” This includes third-party liability and other related expenses of injury or death of crew, passengers and other third parties, loss or damage to cargo,cargoes, claims arising from collisions with other vessels, damage to other third-party property,properties, pollution arising from oil or other substances, and salvage, towing 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 $1.0 billion per vessel per incident. The 14 P&I Associations that comprise the International Group insure approximately 90% of the world’s commercial tonnage and have entered into a pooling agreement to reinsure each association’s liabilities. Each P&I Association has capped its exposure to this pooling agreement at $4.5 billion. As a member of a P&I Association, which is a member of the International Group, we are subject to calls payable to the associations based on its claim records as well as the claim records of all other members of the individual associations, and members of the pool of P&I Associations comprising the International Group.

Competition

We operate in a highly competitive global market based primarily on supply and demand of vessels and cargoes. While the worldwide LPG sector is comparatively smaller than other shipping sectors, consisting of vessels of varying sizes between 1,000 and 80,00085,000 cbm, it is a diversified global market with many charterers, owners and operators of vessels. As of April 1, 2013,2016, our LPG carrier fleet, including our two chartered in vessels, had an average age of 11.89.4 years, and accordingly,we had five newbuildings scheduled to be delivered from the third quarter of 2016 to the third quarter of 2017, representing an aggregate capacity of approximately 37.5% of our existing fleet’s capacity. Accordingly, we believe we are well positioned from a competitive standpoint in terms of our vessels meeting the ongoing needs of charterers. Also, as of April 1, 2013, we believe2016, we had one of the largest single-owned fleets

in our primary sector segment (3,000 cbm to 8,000 cbm), which, in our view, also positions us well from the standpoint of charterers and competitors. We believe, however, that the LPG shipping sector will continue to be highly competitive, and will be driven by both energy production and consumption.

Ownership of medium range product carriers and crude oil tankers capable of transporting crude oil and refined petroleum products, such as gasoline, diesel, fuel oil and jet fuel, as well as edible oils and chemicals, is highly diversified and is divided among many independent tanker owners. Many oil companies and other oil trading companies, the principal charterers of our product carriers and crude oil tankers, also operate their own vessels and transport oil for themselves and third party charterers in direct competition with independent owners and operators. Competition for charters, including for the transportation of oil and oil products, can be intense and depends on price as well as on the location, size, age, condition, specifications and acceptability of the vessel and its operator to the charterer and is frequently tied to having an available vessel with the appropriate approvals from oil majors. Principal factors that are important to our charterers include the quality and suitability of the vessel, its age, technical sophistication, safety record, compliance with IMO standards and the heightened industry standards that have been set by some energy companies, and the competitiveness of the bid in terms of overall price.

Seasonality

The LPG carrier market is typically stronger in the fall and winter months in anticipation of increased consumption of propane and butane for heating during the winter months. In addition, unpredictable weather patterns in these months tend to disrupt vessel scheduling and supplies of certain commodities. As a result, our revenues may be stronger in fiscal quarters ended December 31 and March 31 and relatively weaker during the fiscal quarters ended June 30 and September 30, as was the case in each of the last five fiscal years. We have limited exposure to seasonality with respect to our product carriers, as two of them arehave been deployed on fixed rate bareboat charters expiringwhich expire in the first quarter of 20162017 and the2019, while our third product carrier is employed under a time charter which expires in July 2016. The Aframax crude oil tanker is deployed on a fixed rate time charter expiring in the third quarter of 2016. Similarly, the Aframax crude oil tanker is deployed in a five-year fixed rate bareboat charter expiring in the third quarter of 2015.February 2018.

C. Organizational Structure

As of December 31, 2012,2015, we arewere the sole owner of all the outstanding shares of the subsidiaries listed in Exhibit 8.

D. Properties

Other than our vessels we do not have any material property. For information on our fleet see “Item 4. Information on the Company—Business Overview.” Our vessels are subject to priority mortgages, which secure our obligations under our various credit facilities. For further details regarding our credit facilities, refer to “Item 5. Operating and Financial Review and Prospects—B. Liquidity and Capital Resources—Credit Facilities.”

We have no freehold or material leasehold interest in any real property. We lease office space from the Vafias Group.an affiliated company of Stealth Maritime. See “Item 7. Major Shareholders and Related Party Transactions—B. Related Party Transactions—Office Space.”