HELIX

Operating marine structures, marine equipment, oil and gas exploration and production equipment, and oil and gas well structures and equipment for others

Underwater building and construction; marine construction; installation, maintenance and repair of marine structures, marine equipment, and oil and gas exploration and production equipment; [ repair, servicing and maintenance of equipment for use in subsurface and offshore environments; ] laying and construction of pipelines; pipeline installation and repair; cable installation and repair; oil and gas drilling; decommissioning of oil and gas well structures and equipment for others; plugging and abandonment of oil and gas wells; burial and repair of oil and gas well structures, pipelines, and related equipment

Underwater salvage

Underwater structural inspection services; testing of oil and gas well structures and equipment for others