Exhibit 8.1
LIST OF OCEAN RIG UDW INC. SUBSIDIAIRES
Name of Subsidiary | Jurisdiction of Incorporation |
Drill Rigs Holdings Inc. | Marshall Islands |
Ocean Rig 1 Shareholders Inc. | Marshall Islands |
Ocean Rig 1 Inc. | Marshall Islands |
Ocean Rig 1 Greenland Operations Inc. | Marshall Islands |
Ocean Rig Falkland Operations Inc. | Marshall Islands |
Ocean Rig West Africa Operations Inc. | Marshall Islands |
Ocean Rig 2 Shareholders Inc | Marshall Islands |
Ocean Rig 2 Inc. | Marshall Islands |
Drill Rigs Operations Inc. | Marshall Islands |
Ocean Rig EG Operations Inc. | Marshall Islands |
Ocean Rig Norway Operations Inc | Marshall Islands |
Ocean Rig Liberia Operations Inc. | Marshall Islands |
Ocean Rig Ireland Operations Inc. | Marshall Islands |
Drillships Holdings Inc. | Marshall Islands |
Drillship Hydra Shareholders Inc. | Marshall Islands |
Drillship Hydra Owners Inc. | Marshall Islands |
Ocean Rig Corcovado Greenland Operations Inc. | Marshall Islands |
Drillship Paros Shareholders Inc. | Marshall Islands |
Drillship Paros Owners Inc. | Marshall Islands |
Drillships Holdings Operations Inc. | Marshall Islands |
Ocean Rig Angola Operations Inc. | Marshall Islands |
Ocean Rig Gabon Operations Inc. | Marshall Islands |
Drillships Investment Inc. | Marshall Islands |
Kithira Shareholders Inc. | Marshall Islands |
Drillship Kithira Owners Inc. | Marshall Islands |
Ocean Rig Poseidon Operations Inc. | Marshall Islands |
Skopelos Shareholders Inc. | Marshall Islands |
Drillship Skopelos Owners Inc. | Marshall Islands |
Drillships Investment Operations Inc. | Marshall Islands |
Ocean Rig Namibia Operations Inc. | Marshall Islands |
Ocean Rig Cuanza Operations Inc. | Marshall Islands |
Drillships Ocean Ventures Inc. | Marshall Islands |
Drillship Skiathos Shareholders Inc. | Marshall Islands |
Drillship Skiathos Owners Inc. | Marshall Islands |
Drillship Skyros Shareholders Inc. | Marshall Islands |
Drillship Skyros Owners Inc. | Marshall Islands |
Drillship Kythnos Shareholders Inc. | Marshall Islands |
Drillship Kythnos Owners Inc. | Marshall Islands |
Drillships Ocean Ventures Operations Inc. | Marshall Islands |
Ocean Rig Cunene Operations Inc. | Marshall Islands |
Ocean Rig Cubango Operations Inc. | Marshall Islands |
Ocean Rig Operations Inc. | Marshall Islands |
Ireland Drilling Crew Inc. | Marshall Islands |
Drillships Financing Holding Inc. | Marshall Islands |
Alley Finance Co. | Marshall Islands |
Algarve Finance Ltd | Marshall Islands |
Ocean Rig Global Chartering Inc. | Marshall Islands |
Drillship Alonissos Shareholders Inc. | Marshall Islands |
Drillship Alonissos Owners Inc. | Marshall Islands |
Ocean Rig Management Inc. | Marshall Islands |
Eastern Med Consultants Inc. | Marshall Islands |
Ocean Rig Spares Inc. | Marshall Islands |
Bluesky Shareholders Inc. | Marshall Islands |
Bluesky Owners Inc. | Marshall Islands |
Ocean Rig Black Sea Cooperatief U.A. | Netherlands |
Ocean Rig Black Sea Operations B.V. | Netherlands |
Ocean Rig Drilling Operations Cooperatief U.A. | Netherlands |
Ocean Rig Drilling Operations B.V. | Netherlands |
Ocean Rig Block 33 Brasil Cooperatief U.A. | Netherlands |
Ocean Rig Block 33 Brasil B.V. | Netherlands |
Ocean Rig Ghana Limited | Ghana |
Ocean Rig Olympia Operations Ghana Limited | Ghana |
Primelead Limited | Cyprus |
Ocean Rig UDW LLC | U.S. |
[Drillships Projects Inc. | Delaware, U.S. |
Ocean Rig Canada Inc. | Canada |
Ocean Rig North Sea AS | Norway |
Ocean Rig AS | Norway |
Ocean Rig UK Limited | UK |
Ocean Rig Limited | UK |
Olympia Rig Angola Holding S.A. | Angola |
Olympia Rig Angola Limitada | Angola |
Ocean Rig Deepwater Drilling Limited | Nigeria |
Ocean Rig do Brasil Servicos de Petroleo Ltda. | Brazil |
Ocean Rig Drilling do Brasil Servicos de Petroleo Ltda. | Brazil |
Ocean Rig Rio de Janeiro Servicos de Petroleo Ltda. | Brazil |
Ocean Rig Offshore Management Limited | Jersey |
OR Crewing Limited | Jersey |
Ocean Rig Holdings Inc. | Marshall Islands |
Ocean Rig MLP Holdings Inc. | Marshall Islands |
Ocean Rig Partners GP LLC | Marshall Islands |
Ocean Rig Partners LP | Marshall Islands |
Ocean Rig Operating Partners GP LLC | Marshall Islands |
Ocean Rig Operating LP | Marshall Islands |
Drillships Ocean Ventures II Inc. | Marshall Islands |
Drillship Skiathos Shareholders II Inc. | Marshall Islands |
Drillship Skiathos Owners II Inc. | Marshall Islands |
Drillship Skyros Shareholders II Inc. | Marshall Islands |
Drillship Skyros Owners II Inc. | Marshall Islands |
Drillship Kythnos Shareholders II Inc. | Marshall Islands |
Drillship Kythnos Owners II Inc. | Marshall Islands |
OCR Falklands Drilling Inc. | Marshall Islands |
[Drillships Ventures Projects Inc. | Delaware, U.S. |
South Africa Drilling Crew Inc. | Marshall Islands |
Ocean Rig Congo Operations Inc. | Marshall Islands |
OR Global Block Operators Inc. | Marshall Islands |
Drillship Santorini Shareholders Inc. | Marshall Islands |
Drillship Santorini Owners Inc. | Marshall Islands |
Drillship Crete Shareholders Inc. | Marshall Islands |
Drillship Crete Owners Inc. | Marshall Islands |
Drillship Amorgos Shareholders Inc. | Marshall Islands |
Drillship Amorgos Owners Inc. | Marshall Islands |