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|              Name of      Subsidiary  | Jurisdiction      of Formation |
|-------------------------------------------------------------------------------------------------------------|--------------------------------|
|    Canyon      Offshore,  Inc.                                                     | Texas                          |
|    Canyon      Offshore Limited                                                              | Scotland                       |
|    Canyon      Offshore International Corp                                                   | Texas                          |
|    Helix      Energy Solutions BV                                                            | The      Netherlands           |
|    Helix      Energy Solutions (U.K.) Limited                                                | Scotland                       |
|    Helix      Well Ops (U.K.) Limited                                                        | Scotland                       |
|    Helix      HR Services Limited                                                            | Scotland                       |
|    Helix      Offshore Crewing Services PTE. LTD                                             | Singapore                      |
|    Helix      Well Ops, Inc.                                                                 | Texas                          |
|    Energy      Resource Technology GOM, Inc.                                                 | Delaware                       |
|    CKB      Petroleum, Inc.                                                                  | Texas                          |
|    CKB      & Associates, Inc.                                                           | Texas                          |
|    Box      Brothers Realty Investments Company                                              | Texas                          |
|    CB      Farms, Inc.                                                                       | Texas                          |
|    Box      Resources, Inc.                                                                  | Texas                          |
|    Energy      Resource Technology (U.K.) Limited                                            | Scotland                       |
|    Cal      Dive I-Title XI, Inc.                                                            | Texas                          |
|    Helix      Vessel Holdings LLC                                                            | Delaware                       |
|    Neptune      Vessel Holdings LLC                                                          | Delaware                       |
|    Vulcan      Marine Holdings LLC                                                           | Delaware                       |
|    Vulcan      Marine Technology LLC                                                         | Delaware                       |
| Helix      Offshore Ltd.                                                                                    | Cayman      Islands            |
|    Helix      Subsea Construction, Inc.                                                      | Delaware                       |
|    Kommandor      LLC  (50% interest)                                              | Delaware                       |
|    Helix      Energy Services Pte. Limited                                                   | Singapore                      |
| AGR-Helix      Floating Production Limited  (50%)                                                 | Cayman      Islands            |
|    Well      Ops SEA Pty Ltd (d/b/a Seatrac)                                                 | Australia                      |
|    Helix      Energy Services Pty Ltd                                                        | Australia                      |
|    Helix      Ingleside LLC                                                                  | Delaware                       |
| FPSO Shiraz      Pty Ltd.  (50%)                                                                  | Australia                      |
|    Helix      Energy Services (Cyprus) Limited                                               | Cyprus                         |
| Deepwater      Gateway, L.L.C. (50%)                                                                        | Delaware                       |
| Helix Do      Brasil Servicos De Petróleo Ltda                                                         | Brazilian      Limitada        |
| Helix      Offshore International, Inc.                                                                     | Texas                          |
| Helix RDS SDN      BHD                                                                                      | Malaysia                       |
| Independence      Hub, LLC (20%)                                                                            | Delaware                       |
| Intercoastal      Vessel Services Ltd. (49%)                                                                | Cayman      Islands            |
| Pacific Shelf      1590 Limited                                                                             | Scotland                       |

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