| Name      of company                      | Country      ofincorporation | Principal      activities                                                                                                            |   | Percent      owned |   |
|-------------------------------------------|------------------------------|--------------------------------------------------------------------------------------------------------------------------------------|--------|--------------------|--------|
|                                      |                         |                                                                                                                                 |   |               |   |
| Drilling      unit owning companies       |                         |                                                                                                                                 |   |               |   |
|                                      |                         |                                                                                                                                 |   |               |   |
| Seadrill      Deepwater Rigs Ltd          | Bermuda                      | Owner      of West Phoenix and West Eminence                                                                                         |   |               | 100    |   |
| Seadrill      Deepwater Units Ltd         | Bermuda                      | Owner      of West Navigator                                                                                                         |   |               | 100    |   |
| Seadrill      Deepwater Drillship Ltd     | Cayman      Islands          | Owner      of West Capella                                                                                                           |   |               | 100    |   |
| Subsea      Drilling (IV) Ltd             | Cyprus                       | Owner      of West Aquarius                                                                                                          |   |               | 100    |   |
| Seadrill      Orion Limited               | Bermuda                      | Owner      of West Orion                                                                                                             |   |               | 100    |   |
| Seadrill      Capricorn Limited           | Bermuda                      | Owner      of West Capricorn                                                                                                         |   |               | 100    |   |
| Seadrill      Hungary Kft                 | Hungary                      | Owner      of West Sirius                                                                                                            |   |               | 100    |   |
| West      Triton Limited                  | Bermuda                      | Owner      of West Triton                                                                                                            |   |               | 100    |   |
| Seadrill      Larissa Ltd                 | Cyprus                       | Owner      of West Larissa                                                                                                           |   |               | 100    |   |
| Seadrill      Norge AS                    | Norway                       | Owner      of West Alpha, West Epsilon and  West Venture                                                                   |   |               | 100    |   |
| Seadrill      Janus Ltd                   | Cyprus                       | Owner      of West Janus                                                                                                             |   |               | 100    |   |
| Seadrill      Jack-Ups Ltd                | Bermuda                      | Owner      of West Callisto, West Juno and West Leda                                                                                 |   |               | 100    |   |
| Seadrill      Ariel Ltd                   | Liberia                      | Owner      of West Ariel                                                                                                             |   |               | 100    |   |
| Seadrill      Tender Rig Ltd              | Bermuda                      | Holding      company and owner of West Alliance, West Berani, West Jaya, West Menang,      West Pelaut, T-4, T-7, T-8, T-11 and T-12 |   |               | 100    |   |
| Seadrill      Tender Rigs Pte Ltd         | Singapore                    | Owner      of West Setia                                                                                                             |   |               | 100    |   |
| Seadrill      Gemini Ltd                  | Bermuda                      | Owner      of West Gemini                                                                                                            |   |               | 100    |   |
| Seawell      Limited                      | Bermuda                      | Holding      company of Seawell Group                                                                                                |   |               | 73.8   |   |
| 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 Taurus and West Hercules                                                                                          |   |               | 0      | * |
|                                      |                         |                                                                                                                                 |   |               |   |   |
| Contracting      and management companies |                         |                                                                                                                                 |   |               |   |   |
|                                      |                         |                                                                                                                                 |   |               |   |   |
| Seadrill      Offshore AS                 | Norway                       | Drilling      services contractor                                                                                                    |   |               | 100    |   |
| Seadrill      Management AS               | Norway                       | Management      company                                                                                                              |   |               | 100    |   |
| Seadrill      Americas Inc                | USA                          | Drilling      services contractor and technical services company                                                                     |   |               | 100    |   |
|                                      |                         |                                                                                                                                 |   |               |   |   |
| Seadrill      Servicos de Petroleo Ltda   | Brazil                       | Drilling      services contractor                                                                                                    |   |               | 100    |   |
| Seadrill      Asia Ltd                    | Hong      Kong               | Drilling      services contractor, holding company                                                                                   |   |               | 100    |   |
| Seadrill      Offshore Singapore Ltd      | Singapore                    | Management      company                                                                                                              |   |               | 100    |   |
| Seadrill      Deepwater Crewing Ltd       | Bermuda                      | Crewing      company                                                                                                                 |   |               | 100    |   |
| Seadrill      Management (S) Pte Ltd      | Singapore                    | Management      company                                                                                                              |   |               | 100    |   |
| Seadrill      Management Services Ltd     | British      Virgin Islands  | Management      company                                                                                                              |   |               | 100    |   |