Exhibit 21
SUBSIDIARIES OF TRANSOCEAN LTD.
(as of December 31, 2013)

Subsidiary Name | Jurisdiction
15375 Memorial Corporation | Delaware
Adriatic 8 Limited | Cayman Islands
Aguas Profundas, Limitada | Angola
Angola Deepwater Drilling Company (Offshore Services) Ltd | Cayman Islands
Angola Deepwater Drilling Company (Operations) Ltd | Cayman Islands
Angola Deepwater Drilling Company Ltd | Cayman Islands
AngoSantaFe - Prestacao de Servicos Petroliferos, Limitada | Angola
Applied Drilling Technology Inc. | Texas
Applied Drilling Technology International Limited | England & Wales
Arcade Drilling AS | Norway
Ashgrove Carriers Ltd. | Liberia
Asie Sonat Offshore Sdn. Bhd. | Malaysia
Blegra Asset Management Limited | Cyprus
Blegra Financing Limited | Cyprus
Campeche Drilling Services Inc. | Delaware
Challenger Minerals (Accra) Inc. | Cayman Islands
Challenger Minerals (Celtic Sea) Limited | British Virgin Islands
Challenger Minerals (Ghana) Limited | Ghana
Challenger Minerals Inc. | California
Cliffs Drilling do Brasil Servicos de Petroleo Ltda. | Brazil
Constellation II Limited | Cayman Islands
Covent Garden - Servicos e Marketing, Sociedade Unipessoal Lda | Portugal
Deepwater Drilling II L.L.C. | Delaware
Deepwater Drilling L.L.C. | Delaware
Deepwater Drilling North Africa LLC - Free Zone | Egypt
Deepwater Pacific 1 Inc. | British Virgin Islands
Deepwater Pacific 2 Inc. | British Virgin Islands
DR Stewart Limited | Cayman Islands
Eaton Industries of Houston, Inc. | Texas
Elder Trading Co. | Liberia
Entities Holdings, Inc. | Delaware
Falcon Atlantic Ltd. | Cayman Islands
Fortress Energy Services LLC | Oman
Global Dolphin Drilling Company Limited | India
Global Marine Inc. | Delaware
Global Mining Resources, Inc. | Philippines
Global Offshore Drilling Limited | Nigeria
GlobalSantaFe (Labuan) Inc. | Malaysia
GlobalSantaFe (Norge) AS | Norway
GlobalSantaFe Arctic Ltd. | Nova Scotia
GlobalSantaFe B.V. | Netherlands
GlobalSantaFe Beaufort Sea Inc. | Delaware
GlobalSantaFe C.R. Luigs Limited | England & Wales
GlobalSantaFe Campeche Holdings LLC | Delaware
GlobalSantaFe Caribbean Inc. | California
GlobalSantaFe Communications, Inc. | Delaware
GlobalSantaFe Corporate Services Inc. | Delaware
GlobalSantaFe de Venezuela Inc. | Delaware
GlobalSantaFe Deepwater Drilling LLC | Delaware
GlobalSantaFe Denmark Holdings ApS | Denmark
GlobalSantaFe Development Inc. | California
GlobalSantaFe do Brasil Ltda. | Brazil
GlobalSantaFe Drilling (N.A.) N.V. | Netherlands Antilles
GlobalSantaFe Drilling (South Atlantic) Inc. | Cayman Islands
GlobalSantaFe Drilling Company | Delaware
GlobalSantaFe Drilling Company (Canada) Limited | Nova Scotia
GlobalSantaFe Drilling Company (North Sea) Limited | England & Wales
GlobalSantaFe Drilling Company (Overseas) Limited | England & Wales
GlobalSantaFe Drilling Mexico, S. de R.L. de C.V. | Mexico
GlobalSantaFe Drilling Operations Inc. | Cayman Islands
GlobalSantaFe Drilling Services (North Sea) Limited | England & Wales
GlobalSantaFe Drilling Trinidad LLC | Delaware
GlobalSantaFe Drilling Venezuela, C.A. | Venezuela
GlobalSantaFe Financial Services (Luxembourg) S.a.r.l. | Luxembourg
GlobalSantaFe GOM Services Inc. | British Virgin Islands
GlobalSantaFe Group Financing Limited Liability Company | Hungary
GlobalSantaFe Holding Company (North Sea) Limited | England & Wales
GlobalSantaFe Hungary Services Limited Liability Company | Hungary
GlobalSantaFe International Drilling Corporation | Bahamas
GlobalSantaFe International Drilling Inc. | British Virgin Islands
GlobalSantaFe International Services Inc. | Panama
GlobalSantaFe Leasing Corporation | Bahamas
GlobalSantaFe Leasing Limited | Cayman Islands
GlobalSantaFe Mexico Holdings LLC | Delaware
GlobalSantaFe Nederland B.V. | Netherlands
GlobalSantaFe Offshore Services Inc. | Cayman Islands
GlobalSantaFe Operations (Australia) Pty Ltd | Western Australia
GlobalSantaFe Operations (BVI) Inc. | Cayman Islands
GlobalSantaFe Operations (Mexico) LLC | Delaware
GlobalSantaFe Operations Inc. | Cayman Islands
GlobalSantaFe Overseas Limited | Bahamas
GlobalSantaFe Saudi Arabia Ltd. | British Virgin Islands
GlobalSantaFe Services (BVI) Inc. | Cayman Islands
GlobalSantaFe Services Netherlands B.V. | Netherlands
GlobalSantaFe Servicios de Venezuela, C.A. | Venezuela
GlobalSantaFe South America LLC | Delaware
GlobalSantaFe Southeast Asia Drilling Pte. Ltd. | Singapore
GlobalSantaFe Tampico, S. de R.L. de C.V. | Mexico
GlobalSantaFe Techserv (North Sea) Limited | England & Wales
GlobalSantaFe U.S. Drilling Inc. | Delaware
GlobalSantaFe U.S. Holdings Inc. | Delaware
GlobalSantaFe West Africa Drilling Limited | Bahamas
GSF Caymans Holdings Inc. | Cayman Islands
GSF Leasing Services GmbH | Switzerland
Hellerup Finance International | Ireland
Indigo Drilling Limited | Nigeria
Intermarine Services (International) Limited | Bahamas
Intermarine Services Inc. | Texas
Intermarine Servicos Petroliferos Ltda. | Brazil
International Chandlers, Inc. | Texas
Key Perfuracoes Maritimas Limitada | Brazil
Minerales Submarinos Mexicanos S.A. | Mexico
Nickel Development Inc. | Philippines
NRB Drilling Services Limited | Nigeria
Oilfield Services, Inc. | Cayman Islands
P.T. Santa Fe Supraco Indonesia | Indonesia
Platform Capital N.V. | Netherlands Antilles
Platform Financial N.V. | Netherlands Antilles
PT. Transocean Indonesia | Indonesia
R&B Falcon (A) Pty Ltd | Western Australia
R&B Falcon (Caledonia) Limited | England & Wales
R&B Falcon (Ireland) Limited | Ireland
R&B Falcon (M) Sdn. Bhd. | Malaysia
R&B Falcon (U.K.) Limited | England & Wales
R&B Falcon B.V. | Netherlands
R&B Falcon Deepwater (UK) Limited | England & Wales
R&B Falcon Drilling (International & Deepwater) Inc. LLC | Delaware
R&B Falcon Drilling Co. LLC | Oklahoma
R&B Falcon Drilling Limited LLC | Oklahoma
R&B Falcon Exploration Co., LLC | Oklahoma
R&B Falcon International Energy Services B.V. | Netherlands
R&B Falcon Offshore Limited, LLC | Oklahoma
R&B Falcon, Inc. LLC | Oklahoma
Ranger Insurance Limited | Cayman Islands
RB Mediterranean Ltd. | Cayman Islands
RBF Drilling Co. LLC | Oklahoma
RBF Drilling Services, Inc. LLC | Oklahoma
RBF Exploration LLC | Delaware
RBF Finance Co. | Delaware
RBF Rig Corporation, LLC | Oklahoma
Reading & Bates Coal Co., LLC | Nevada
Reading & Bates Demaga Perfuraçoes Ltda. | Brazil
Resource Rig Supply Inc. | Delaware
Rig 127 Limited | Cayman Islands
Rig 134 Limited | Cayman Islands
Safemal Drilling Sdn. Bhd. | Malaysia
Santa Fe Braun Inc. | Delaware
Santa Fe Construction Company | Delaware
Santa Fe Drilling Company (U.K.) Limited | England & Wales
Santa Fe Drilling Company of Venezuela, C.A. | California
Santa Fe Servicos de Perfuracao Limitada | Brazil
Saudi Drilling Company Limited | Saudi Arabia
SDS Offshore Limited | England
Sedco Forex Holdings Limited | Cayman Islands
Sedco Forex International Services, S.A. | Panama
Sedco Forex International, Inc. | Panama
Sedco Forex of Nigeria Limited | Nigeria
Sedco Forex Technology, Inc. | Panama
Sedneth Panama, S.A. | Panama
Sefora Maritime Limited | Cayman Islands
Services Petroliers Transocean | France
Servicios Petroleros Santa Fe, S.A. | Venezuela
Shore Services, LLC | Texas
Sonat Offshore do Brasil Perfuracoes Maritimas Ltda. | Brazil
Sonat Offshore S.A. | Panama
T. I. International Mexico S. de R.L. de C.V. | Mexico
TODDI Holdings LLC | Delaware
Transocean 1 AS | Norway
Transocean Africa Drilling Limited | Cayman Islands
Transocean Alaskan Ventures Inc. | Delaware
Transocean Andaman Limited | Cayman Islands
Transocean Ao Thai Limited | Cayman Islands
Transocean Arctic Limited | Cayman Islands
Transocean Asia Services Sdn Bhd | Malaysia
Transocean Barents ASA | Norway
Transocean Benefit Services Srl | Barbados
Transocean Brasil Ltda. | Brazil
Transocean Britannia Limited | Cayman Islands
Transocean Canada Co. | Nova Scotia
Transocean Canada Drilling Services Ltd. | Nova Scotia
Transocean Construction Management Ltd. | Cayman Islands
Transocean Corporate Services Limited | Cayman Islands
Transocean Cunningham LLC | Delaware
Transocean Cyprus Capital Management Public Limited | Cyprus
Transocean Cyprus Drilling Operations Public Limited | Cyprus
Transocean Deepwater Drilling Services Limited | Cayman Islands
Transocean Deepwater Frontier Limited | Cayman Islands
Transocean Deepwater Holdings Limited | Cayman Islands
Transocean Deepwater Inc. | Delaware
Transocean Deepwater Mauritius | Mauritius
Transocean Deepwater Nautilus Limited | Cayman Islands
Transocean Deepwater Pathfinder Limited | Cayman Islands
Transocean Deepwater Seafarer Services Limited | Cayman Islands
Transocean Discoverer 534 LLC | Delaware
Transocean Drilling (Nigeria) Ltd. | Nigeria
Transocean Drilling (U.S.A.) Inc. | Texas
Transocean Drilling Israel Ltd. | Cayman Islands
Transocean Drilling Limited | Scotland
Transocean Drilling Namibia Inc. | Cayman Islands
Transocean Drilling Offshore International Limited | Cayman Islands
Transocean Drilling Offshore S.a.r.l. | Luxembourg
Transocean Drilling Offshore Ventures Limited | Cayman Islands
Transocean Drilling Resources Limited | Cayman Islands
Transocean Drilling Sdn. Bhd. | Malaysia
Transocean Drilling Services (India) Private Limited | India
Transocean Drilling Services Inc. | Delaware
Transocean Drilling Services Offshore Inc. | British Virgin Islands
Transocean Drilling Turkey Limited | Cayman Islands
Transocean Drilling U.K. Limited | Scotland
Transocean Eastern Pte. Ltd. | Singapore
Transocean Enterprise Inc. | Delaware
Transocean Entities Holdings GmbH | Switzerland
Transocean Finance Limited | Cayman Islands
Transocean Financing GmbH | Switzerland
Transocean GSF Monitor Limited | Cayman Islands
Transocean Holdings LLC | Delaware
Transocean Hungary Holdings LLC | Hungary
Transocean Inc. | Cayman Islands
Transocean Inc. Luxembourg Asset Management S.C.S. | Luxembourg
Transocean India Limited | Cayman Islands
Transocean Innovation Labs Ltd. | Cayman Islands
Transocean International Drilling Limited | Cayman Islands
Transocean International Holdings Limited | Cayman Islands
Transocean International Resources, Limited | British Virgin Islands
Transocean Investimentos Ltda. | Brazil
Transocean Investments S.a.r.l. | Luxembourg
Transocean Labrador Limited | Cayman Islands
Transocean Magellan Limited | Cayman Islands
Transocean Management Inc. | Delaware
Transocean Management Ltd. | Switzerland
Transocean Marine Limited | Cayman Islands
Transocean Mediterranean LLC | Delaware
Transocean Nautilus Limited | Cayman Islands
Transocean North Africa Inc. | Cayman Islands
Transocean North Sea Limited | Bahamas
Transocean Norway Drilling AS | Norway
Transocean Norway Operations AS | Norway
Transocean Norway Operations Support AS | Norway
Transocean Offshore (Cayman) Inc. | Cayman Islands
Transocean Offshore (North Sea) Ltd. | Cayman Islands
Transocean Offshore (U.K.) Inc. | Delaware
Transocean Offshore Canada Services Ltd. | Nova Scotia
Transocean Offshore Caribbean Sea, L.L.C. | Delaware
Transocean Offshore Deepwater Drilling Inc. | Delaware
Transocean Offshore Deepwater Holdings Limited | Cayman Islands
Transocean Offshore Drilling Limited | England & Wales
Transocean Offshore Drilling Services LLC | Delaware
Transocean Offshore Europe Limited | Cayman Islands
Transocean Offshore Gulf of Guinea II Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea III Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea IV Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea IX Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea V Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea VI Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea VII Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea VIII Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea X Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea XI Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea XII Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea XIII Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea XIV Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea XV Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea XVI Limited | British Virgin Islands
Transocean Offshore Gulf of Guinea XVII Limited | British Virgin Islands
Transocean Offshore Holdings Limited | Cayman Islands
Transocean Offshore International Limited | Cayman Islands
Transocean Offshore International Ventures Limited | Cayman Islands
Transocean Offshore Limited | Cayman Islands
Transocean Offshore Management Services Limited | Cayman Islands
Transocean Offshore Nigeria Limited | Nigeria
Transocean Offshore Norway Inc. | Delaware
Transocean Offshore Norway Services AS | Norway
Transocean Offshore PR Limited | Cayman Islands
Transocean Offshore Services Ltd. | Cayman Islands
Transocean Offshore USA Inc. | Delaware
Transocean Offshore Ventures Inc. | Delaware
Transocean Onshore Support Services Limited | Scotland
Transocean Pacific Drilling Holdings Limited | Cayman Islands
Transocean Pacific Drilling Inc. | British Virgin Islands
Transocean Payroll Services SRL | Barbados
Transocean Perfuracoes Ltda. | Brazil
Transocean Rig 140 Limited | Cayman Islands
Transocean Rig Management Limited | Cayman Islands
Transocean Rig Services Offshore LLC | Delaware
Transocean Sedco Forex Ventures Limited | Cayman Islands
Transocean Services AMA JLT | Dubai Multi Commodities Centre
Transocean Services AS | Norway
Transocean Services Offshore LLC | Delaware
Transocean Services UK Limited | England & Wales
Transocean Seven Seas LLC | Delaware
Transocean Siam Driller Limited | Cayman Islands
Transocean Spitsbergen ASA | Norway
Transocean Support Services Limited | Cayman Islands
Transocean Support Services Nigeria Limited | Nigeria
Transocean Support Services Private Limited | India
Transocean Technical Services Egypt LLC | Egypt
Transocean Technical Services Inc. | Panama
Transocean Technology Innovations LLC | Delaware
Transocean Treasury Services SRL | Barbados
Transocean Trident VI Limited | Cayman Islands
Transocean Trident XVII Limited | Cayman Islands
Transocean UK Limited | England & Wales
Transocean West Africa Holdings Limited | Cayman Islands
Transocean West Africa South Limited | Cayman Islands
Transocean Worldwide Inc. | Cayman Islands
Trident 4 Limited | Cayman Islands
Triton Asset Leasing GmbH | Switzerland
Triton Drilling Limited | Cayman Islands
Triton Drilling Mexico LLC | Delaware
Triton Financing LLC | Hungary
Triton Holdings Limited | British Virgin Islands
Triton Hungary Asset Management LLC | Hungary
Triton Hungary Investments 1 Limited Liability Company | Hungary
Triton Industries, Inc. | Panama
Triton Management Services LLC | Hungary
Triton Nautilus Asset Leasing GmbH | Switzerland
Triton Nautilus Asset Management LLC | Hungary
Triton Offshore Leasing Services Limited | Malaysia
Triton Pacific Limited | England
TSSA - Servicos de Apoio, Lda. | Angola
Turnkey Ventures de Mexico Inc. | Delaware
Wilrig Offshore (UK) Limited | England & Wales