Exhibit 8.1
SIGNIFICANT SUBSIDIARIES
The table below lists the Company's significant subsidiaries as of December 31, 2020:
Name of company | Country of Incorporation | Principal activities | |||||||||
Drilling unit owning companies | |||||||||||
Asia Offshore Rig 1 Ltd | Bermuda | Owner of AOD 1 | |||||||||
Asia Offshore Rig 2 Ltd | Bermuda | Owner of AOD 2 | |||||||||
Asia Offshore Rig 3 Ltd | Bermuda | Owner of AOD 3 | |||||||||
Sevan Brasil Ltd | Bermuda | Owner of Sevan Brasil | |||||||||
Sevan Drilling Rig VI Pte Ltd | Singapore | Owner of Sevan Developer | |||||||||
Sevan Driller Ltd | Bermuda | Owner of Sevan Driller | |||||||||
Sevan Louisiana Hungary KFT | Hungary | Owner of Sevan Louisiana | |||||||||
North Atlantic Alpha Ltd | Bermuda | Owner of West Alpha | |||||||||
Seadrill Ariel Ltd. | Liberia | Owner of West Ariel | |||||||||
Seadrill Callisto Ltd | Bermuda | Owner of West Callisto | |||||||||
Seadrill Carina Ltd | Bermuda | Owner of West Carina | |||||||||
Seadrill Castor Pte Ltd | Bermuda | Owner of West Castor | |||||||||
Seadrill Cressida Ltd | Bermuda | Owner of West Cressida | |||||||||
Seadrill Eclipse Ltd | Bermuda | Owner of West Eclipse | |||||||||
Seadrill Elara Ltd | Bermuda | Owner of West Elara | |||||||||
Seadrill Eminence Ltd | Bermuda | Owner of West Eminence | |||||||||
Seadrill Freedom Ltd | Bermuda | Owner of West Freedom | |||||||||
Seadrill Gemini Ltd | Bermuda | Owner of West Gemini | |||||||||
Seadrill Jupiter Ltd. | Bermuda | Owner of West Jupiter | |||||||||
Seadrill Indonesia Ltd | Bermuda | Owner of West Leda | |||||||||
North Atlantic Navigator Ltd | Bermuda | Owner of West Navigator | |||||||||
Seadrill Neptune Hungary KFT | Bermuda | Owner of West Neptune | |||||||||
Seadrill Orion Ltd | Bermuda | Owner of West Orion | |||||||||
Seadrill Pegasus Pte Ltd | Singapore | Owner of West Pegasus | |||||||||
North Atlantic Phoenix Ltd | Bermuda | Owner of West Phoenix | |||||||||
Seadrill Prospero Ltd | Bermuda | Owner of the West Prospero | |||||||||
Seadrill Saturn Ltd | Bermuda | Owner of West Saturn | |||||||||
Seadrill Telesto Ltd | Bermuda | Owner of West Telesto | |||||||||
Seadrill Tellus Ltd | Bermuda | Owner of West Tellus | |||||||||
Seadrill Tucana Ltd | Bermuda | Owner of West Tucana | |||||||||
North Atlantic Venture Ltd | Bermuda | Owner of West Venture | |||||||||
Scorpion Vigilant Ltd | Bermuda | Owner of West Vigilant | |||||||||
Contracting and management companies | |||||||||||
Seadrill Offshore AS - Europe operations | Norway | Finance Lessee | |||||||||
Eastern Drilling AS | Norway | Onshore Services | |||||||||
Seadrill UK Operations Ltd | United Kingdom | Rig Operator | |||||||||
Seadrill Management Ltd | United Kingdom | Onshore Services | |||||||||
Seadrill Deepwater Charterer Ltd | Bermuda | Finance Lessee | |||||||||
Seadrill Insurance Ltd | Bermuda | Onshore services | |||||||||
Seadrill Angola Lda | Angola | Onshore Services | |||||||||
Seadrill Gulf Operations Neptune LLC | USA | Rig Operator | |||||||||
Seadrill SeaMex SC Holdco Ltd | Bermuda | Onshore Finance | |||||||||
Seadrill Treasury UK Ltd | United Kingdom | Onshore Finance | |||||||||
Seadrill SeaMex 2 de Mexico S de RL de CV | Mexico | Onshore Finance |
Seadrill International Resourcing DMCC | UAE | Onshore Services | |||||||||
Seadrill Global Services Ltd | Bermuda | Onshore Services | |||||||||
Seadrill Management (S) Pte Ltd | Singapore | Onshore Services | |||||||||
Seadrill Nigeria Operations Ltd | Nigeria | Onshore Services | |||||||||
Seadrill Deepwater Units Pte Ltd | Singapore | Onshore Services | |||||||||
Seadrill (Dalian) Consulting Co Ltd | China | Onshore Services | |||||||||
Seadrill Americas INC | USA | Onshore Services | |||||||||
Seadrill Serviços de Petróleo Ltda | Brasil | Rig Operator | |||||||||
Seadrill Operations de Mexico S. de R.L. de C.V | Mexico | Onshore Services | |||||||||
Seadrill Offshore Malaysia Sdn Bhd | Malaysia | Rig Operator | |||||||||
Seadrill Labuan Ltd | Labuan | Intra-charterer | |||||||||
Seadrill Newfoundland Operations Ltd | Canada | Onshore Services | |||||||||
Seadrill UK Support Services Ltd | United Kingdom | Onshore Services | |||||||||
North Atlantic Linus Charterer Ltd | Bermuda | Finance Lessee | |||||||||
Seadrill Norway Crew AS | Norway | Onshore Services | |||||||||
Seadrill North Sea Crewing Ltd | Bermuda | Onshore Services | |||||||||
Seadrill Europe Management AS | Norway | Onshore Services | |||||||||
Sevan Drilling North America LLC | USA | Rig Operator | |||||||||
Seadrill Jack-ups Contracting Ltd | Suriname | Rig Operator | |||||||||
Holding Companies | |||||||||||
Seadrill North Atlantic Holdings Ltd | Bermuda | Holding Company | |||||||||
Seadrill Common Holdings Ltd | Bermuda | Holding Company | |||||||||
Seadrill Deepwater Holdings Ltd | Bermuda | Holding Company | |||||||||
Seadrill Jack Up Holding Ltd | Bermuda | Holding Company | |||||||||
Seadrill Member LLC | Marshall Islands | Holding Company | |||||||||
Seadrill Investment Holding Company Ltd | Bermuda | Holding Company | |||||||||
Seadrill New Finance Ltd | Bermuda | Holding Company | |||||||||
Seadrill Norway Operations Ltd | Bermuda | Holding Company | |||||||||
Seadrill Rig Holding Company Ltd | Bermuda | Holding Company | |||||||||
Seadrill Ltd | Bermuda | Holding Company | |||||||||
Seadrill UK Ltd | United Kingdom | Holding Company | |||||||||
Seadrill Partners LLC Holdco Ltd | Bermuda | Holding Company | |||||||||
Seadrill Seabras UK Ltd | United Kingdom | Holding Company | |||||||||
Seadrill Sevan Holdings Ltd | Bermuda | Holding Company | |||||||||
Seadrill Seabras SP UK Ltd | United Kingdom | Holding Company | |||||||||
Seadrill Mobile Units UK Ltd | United Kingdom | Holding Company | |||||||||
Seadrill Seadragon UK Ltd | United Kingdom | Holding Company | |||||||||
Seadrill Holdings Singapore Pte Ltd | Singapore | Holding Company | |||||||||
Asia Offshore Drilling Ltd | Bermuda | Holding Company | |||||||||
Scorpion Deepwater Ltd | Bermuda | Holding Company | |||||||||
Scorpion International Ltd | Bermuda | Holding Company | |||||||||
Seadrill GCC Operations Ltd | Bermuda | Holding Company | |||||||||
Scorpion Drilling Ltd | Bermuda | Holding Company | |||||||||
Seadrill Far East Ltd | Hong Kong | Holding Company | |||||||||
Sevan Investimentos do Brasil Ltda | Brasil | Holding Company | |||||||||
Sevan Drilling Rig IX Pte Ltd | Singapore | Holding Company | |||||||||
Sevan Drilling Rig VI AS | Norway | Holding Company | |||||||||
Seabras Serviços de Petróleo S.A. | Brasil | Holding Company | |||||||||
Seabras Holdings GmbH | Austria | Holding Company | |||||||||
Seabras Rig Holdings GmbH | Austria | Holding Company | |||||||||