| Name of company                      | Country ofincorporation | Principal activities                                                                                                                  |   | Percentowned |     |
|--------------------------------------|-------------------------|---------------------------------------------------------------------------------------------------------------------------------------|--------|--------------|----------|
|                                 |                    |                                                                                                                                  |   |         |     |
| Drilling unit owning companies       |                    |                                                                                                                                  |   |         |     |
|                                 |                    |                                                                                                                                  |   |         |     |
| North Atlantic Alpha Ltd             | Bermuda                 | Owner of West Alpha                                                                                                                   |   |         |  75 |   |
| North Atlantic Elara Ltd             | Bermuda                 | Owner of Wesy Elara                                                                                                                   |   |         |  75 |   |
| North Atlantic Epsilon Ltd           | Bermuda                 | Owner of West Epsilon                                                                                                                 |   |         |  75 |   |
| North Atlantic Linus Ltd             | Bermuda                 | Owner of West Linus                                                                                                                   |   |         |  75 |   |
| North Atlantic Navigator Ltd         | Bermuda                 | Owner of West Navigator                                                                                                               |   |         |  75 |   |
| North Atlantic Pheonix Ltd           | Bermuda                 | Owner of West Pheonix                                                                                                                 |   |         |  75 |   |
| North Atlantic Venture Ltd           | Bermuda                 | Owner of West Venture                                                                                                                 |   |         |  75 |   |
| Scorpion Courageous Ltd.             | Bermuda                 | Owner of Offshore Courageous                                                                                                          |   |         | 100      |   |
| Scorpion Defender Ltd.               | Bermuda                 | Owner of Offshore Defender                                                                                                            |   |         | 100      |   |
| Scorpion Freedom Ltd.                | Bermuda                 | Owner of Offshore Freedom                                                                                                             |   |         | 100      |   |
| Scorpion Intrepid Ltd.               | Bermuda                 | Owner of Offshore Intrepid                                                                                                            |   |         | 100      |   |
| Scorpion Resolute Ltd.               | Bermuda                 | Owner of Offshore Resolute                                                                                                            |   |         | 100      |   |
| Scorpion Rigs Ltd.                   | Bermuda                 | Owner of Offshore Mischief                                                                                                            |   |         | 100      |   |
| Scorpion Vigilant Ltd.               | Bermuda                 | Owner of Offshore Vigilant                                                                                                            |   |         | 100      |   |
| Seadrill Auriga Ltd.                 | Bermuda                 | Owner of West Auriga                                                                                                                  |   |         | 100      |   |
| Seadrill Capricorn Ltd.              | Bermuda                 | Owner of West Capricorn                                                                                                               |   |         | 100      |   |
| Seadrill Castor Ltd.                 | Bermuda                 | Owner of West Castor                                                                                                                  |   |         | 100      |   |
| Seadrill China Operations Ltd.       | Bermuda                 | Owner of West Aquarius                                                                                                                |   |         | 100      |   |
| Seadrill Cressida Ltd.               | Bermuda                 | Owner of West Cressida                                                                                                                |   |         | 100      |   |
| Seadrill Eminence Ltd                | Bermuda                 | Owner of West Eminence                                                                                                                |   |         | 100      |   |
| Seadrill Gemini Ltd                  | Bermuda                 | Owner of West Gemini                                                                                                                  |   |         | 100      |   |
| Seadrill Indonesia Ltd               | Bermuda                 | Owner of West Callisto and West Leda                                                                                                  |   |         | 100      |   |
| Seadrill Janus Ltd.                  | Bermuda                 | Owner of West Janus                                                                                                                   |   |         | 100      |   |
| Seadrill Jaya Ltd.                   | Bermuda                 | Owner of West Jaya                                                                                                                    |   |         | 100      |   |
| Seadrill Juno Ltd.                   | Bermuda                 | Owner of West Juno                                                                                                                    |   |         | 100      |   |
| Seadrill Oberon Ltd.                 | Bermuda                 | Owner of West Oberon                                                                                                                  |   |         | 100      |   |
| Seadrill Orion Ltd.                  | Bermuda                 | Owner of West Orion                                                                                                                   |   |         | 100      |   |
| Seadrill Telesto Ltd.                | Bermuda                 | Owner of West Telesto                                                                                                                 |   |         | 100      |   |
| Seadrill Tender Rig Ltd.             | Bermuda                 | Holding company and owner of West Alliance, West Berani,  West Menang, West Pelaut, T-4, T-7, T-8, T-11 and  T-12 |   |         | 100      |   |
| Seadrill Triton Ltd.                 | Bermuda                 | Owner of West Triton                                                                                                                  |   |         | 100      |   |
| Seadrill Tucana Ltd.                 | Bermuda                 | Owner of West Tucana                                                                                                                  |   |         | 100      |   |
| Seadrill T15 Ltd.                    | Bermuda                 | Owner of T15                                                                                                                          |   |         | 100      |   |
| Seadrill T16 Ltd.                    | Bermuda                 | Owner of T16                                                                                                                          |   |         | 100      |   |
| Seadrill Vela Ltd.                   | Bermuda                 | Owner of West Vela                                                                                                                    |   |         | 100      |   |
| Seadrill Vencedor Ltd.               | Bermuda                 | Owner of West Vencedor                                                                                                                |   |         | 100      |   |
| SeaDragon II Ltd.                    | Cayman Islands          | Owner of SeaDragon II                                                                                                                 |   |         | 100      |   |
| Seadrill Deepwater Drillship Ltd.    | Cayman Islands          | Owner of West Capella                                                                                                                 |   |         | 100      |   |
| Seadrill Hungary Kft.                | Hungary                 | Owner of West Sirius                                                                                                                  |   |         | 100      |   |
| Seadrill Ariel Ltd.                  | Liberia                 | Owner of West Ariel                                                                                                                   |   |         | 100      |   |
| Seadrill Pegasus Pte Ltd.            | Singapore               | Owner of West Pegasus                                                                                                                 |   |         | 100      |   |
| Seadrill Tender Rigs Pte. Ltd.       | Singapore               | Owner of West Setia                                                                                                                   |   |         | 100      |   |
|                                 |                    |                                                                                                                                  |   |         |     | . |
|                                 |                    |                                                                                                                                  |   |         |     |   |
| Drilling units under sale leaseback  |                    |                                                                                                                                  |   |         |     |   |
|                                 |                    |                                                                                                                                  |   |         |     |   |
| Rig Finance II Ltd. *                | Bermuda                 | Owner of West Prospero                                                                                                                |   |         | 0        | * |
| SFL Polaris Ltd. *                   | Bermuda                 | Owner of West Polaris                                                                                                                 |   |         | 0        | * |
| SFL Deepwater Ltd. *                 | Bermuda                 | Owner of West Hercules and West Taurus                                                                                                |   |         | 0        | * |
|                                 |                    |                                                                                                                                  |   |         |     |   |
| Contracting and management companies |                    |                                                                                                                                  |   |         |     |   |
|                                 |                    |                                                                                                                                  |   |         |     |   |
| North Atalntic Norway Ltd            | Bermuda                 | Drilling services contracter                                                                                                          |   |         | 75       |   |
| Seadrill Deepwater Crewing Ltd.      | Bermuda                 | Crewing company                                                                                                                       |   |         | 100      |   |
| Seadrill Servicos de Petroleo Ltda.  | Brazil                  | Drilling services contractor                                                                                                          |   |         | 100      |   |
| Seadrill Management Services Ltd.    | British Virgin Islands  | Management company                                                                                                                    |   |         | 100      |   |
| Seadrill Asia Ltd.                   | Hong Kong               | Drilling services contractor, holding company                                                                                         |   |         | 100      |   |
| North Atlantic Crew AS               | Norway                  | Crewing Company                                                                                                                       |   |         |  75 |   |
| North Atlantic Managemnet AS         | Norway                  | Management company                                                                                                                    |   |         | 75       |   |
| Seadrill Offshore AS                 | Norway                  | Drilling services contractor                                                                                                          |   |         | 100      |   |
| Seadrill Management AS               | Norway                  | Management company                                                                                                                    |   |         | 100      |   |
| Seadrill Management (S) Pte Ltd      | Singapore               | Management company                                                                                                                    |   |         | 100      |   |
| Seadrill Offshore Singapore Ltd.     | Singapore               | Management company                                                                                                                    |   |         | 100      |   |
| Seadrill Americas Inc.               | USA                     | Drilling services contractor and technical services company                                                                           |   |         | 100      |   |
|                                 |                    |                                                                                                                                  |   |         |     |   |
| Holding Companies                    |                    |                                                                                                                                  |   |         |     |   |
| North Atlantic Drilling Ltd          | Bermuda                 | Holding Company of North Atlantic vessel owning entities                                                                              |   |         |  75 |   |
| Scorpion Offshore Ltd                | Bermuda                 | Holding Company of Scorpion vessel owning entities                                                                                    |   |         | 100      |   |
| Seadrill UK Ltd                      | United Kingdom          | Holding Company                                                                                                                       |   |         | 100      |   |

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