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 2 Shareholders Inc | Marshall Islands |
Ocean Rig 2 Inc. | Marshall Islands |
Drill Rigs Operations Inc. | Marshall Islands |
Drillships Holdings Inc. | Marshall Islands |
Drillship Hydra Shareholders Inc. | Marshall Islands |
Drillship Hydra Owners Inc. | Marshall Islands |
Drillship Paros Shareholders Inc. | Marshall Islands |
Drillship Paros Owners Inc. | Marshall Islands |
Drillships Holdings Operations Inc. | Marshall Islands |
Drillships Investment Inc. | Marshall Islands |
Kithira Shareholders Inc. | Marshall Islands |
Drillship Kithira Owners Inc. | Marshall Islands |
Skopelos Shareholders Inc. | Marshall Islands |
Drillship Skopelos Owners Inc. | Marshall Islands |
Drillships Investment 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 Cubango Operations Inc. | Marshall Islands |
Ocean Rig Operations Inc. | Marshall Islands |
Drillships Financing Holding Inc. | Marshall Islands |
Agon Shipping Inc. | 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 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 Olympia Operations Ghana Limited | Ghana |
Primelead Limited | Cyprus |
Ocean Rig UDW LLC | U.S. |
Drillships Projects Inc. | Delaware, U.S. |
Drillship Alonissos Stock Trust | Delaware, U.S. |
Ocean Rig Canada Inc. | Canada |
Ocean Rig North Sea AS | Norway |
Ocean Rig AS | Norway |
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 Rio de Janeiro Servicos de Petroleo Ltda. | Brazil |
Ocean Rig Offshore Management Limited | Jersey |
OR Crewing Limited | Jersey |
OCR Falklands Drilling Inc. | Marshall Islands |
Drillships Ventures Projects Inc. | Delaware, U.S. |
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 |
OR Benguela Operations Inc. | Marshall Islands |
Ocean Rig Investments Inc. | Marshall Islands |
OR Norge Operations Inc. | Marshall Islands |
Ocean Rig Management Services Inc. | Marshall Islands |
Ocean Rig Cayman Management Services SEZC Limited | Cayman Islands |
Ship Investment Ocean Holdings Inc. | Marshall Islands |
Kalambo Operations Inc. | Marshall Islands |
Sub-Saharan Drilling Inc. | Marshall Islands |