EX-21.1 3 hlx12312020-ex211.htm LIST OF SUBSIDIARIES
EXHIBIT 21.1

Name of Subsidiary | Jurisdiction of Formation
Cal Dive I-Title XI, Inc. | Texas
Deepwater Abandonment Alternatives, Inc. | Texas
Energy Resource Technology (U.K.) Limited | Scotland
ERT Camelot Limited | Scotland
Helix do Brasil Serviços de Petróleo Ltda. | Brazil
Helix Energy Solutions (U.K.) Limited | Scotland
Helix Group Holdings S.à r.l. | Grand Duchy of Luxembourg
Helix Offshore Crewing Services Limited | Scotland
Helix Offshore Crewing Services PTE. Ltd. | Singapore
Helix Offshore Holdings Ltd. | Cayman Islands
Helix Offshore International Holdings S.à r.l. | Grand Duchy of Luxembourg
Helix Offshore International, Inc. | Texas
Helix Offshore Ltd. | Cayman Islands
Helix Offshore Services A.S. | Norway
Helix Offshore Services Limited | Scotland
Helix Oil & Gas (U.K.) Limited | Scotland
Helix Offshore Services S.à r.l. | Grand Duchy of Luxembourg
Helix Property Corp. | Texas
Helix Q5000 Holdings S.à r.l. | Grand Duchy of Luxembourg
Helix Robotics Solutions, Inc. | Texas
Helix Robotics Solutions International Corp. | Texas
Helix Robotics Solutions Limited | Scotland
Helix Subsea Construction, Inc. | Delaware
Helix Vessel Finance S.à r.l. | Grand Duchy of Luxembourg
Helix Well Ops Inc. | Texas
Helix Well Ops (U.K.) Limited | Scotland
Independence Hub, LLC (20% owned) | Delaware
Kommandor LLC | Delaware
Offshore Well Services, S. de R.L. de C.V. | Mexico
Subsea Technologies Group Limited (70% owned) | Scotland
Subsea Technologies Limited (70% owned) | Scotland