EX-21.1 3 exh21-1.htm LIST OF SUBSIDIARIES

EXHIBIT 21.1
Subsidiaries of Helix Energy Solutions Group, Inc.
As of December 31, 2012

Name of Subsidiary |  | Jurisdiction of Formation
AGR-Helix Floating Production Limited (50%) |  | Grand Cayman Islands
Caesar Holding Co LLC |  | Delaware
Cal Dive I-Title XI, Inc. |  | Texas
Canyon Offshore, Inc. |  | Texas
Canyon Offshore International Corp. |  | Texas
Canyon Offshore Limited |  | Scotland
CKB Petroleum, Inc. |  | Texas
Deepwater Gateway, L.L.C. (50%) |  | Delaware
Energy Resource Technology GOM, Inc. |  | Delaware
Energy Resource Technology (U.K.) Limited |  | Scotland
ERT Camelot Limited |  | Scotland
Helix Do Brasil Servicos De Petróleo Ltda |  | Brazilian limitada
Helix Energy Services (Cyprus) Limited |  | Cyprus
Helix Energy Services Pte Limited |  | Singapore
Helix Energy Services Pty Ltd. |  | Australia
Helix Energy Solutions BV |  | The Netherlands
Helix Energy Solutions (U.K.) Limited |  | Scotland
Helix HR Services Limited |  | Scotland
Helix Ingleside LLC |  | Delaware
Helix Offshore Crewing Services Pte Ltd. |  | Singapore
Helix Offshore International, Inc. |  | Texas
Helix Offshore International S.á.r.l |  | Grand Duchy of Luxembourg
Helix Offshore Ltd. |  | Cayman Islands
Helix RDS SDN BHD |  | Malaysia
Helix Subsea Construction, Inc. |  | Delaware
Helix Vessel Holdings LLC |  | Delaware
Helix Well Ops Inc. |  | Texas
Helix Well Ops Offshore Services Limited |  | Scotland
Helix Well Ops SEA Pty Ltd. |  | Australia
Helix Well Ops (U.K.) Limited |  | Scotland
Independence Hub, LLC (20%) |  | Delaware
Intercoastal Vessel Services Ltd. (49%) |  | Cayman Islands
Kommandor LLC (81%) |  | Delaware
Neptune Vessel Holdings LLC |  | Delaware
Offshore Well Services, S. de R.L. de C.V. |  | Mexico
Vulcan Marine Technology LLC |  | Delaware
Well Ops SEA Pty Ltd. |  | Australia