Subsea Vessel Operator

Allseas

Provides offshore construction and subsea installation capabilities, including remotely operated systems and specialized subsea equipment.

Châtel-Saint-Denis, Switzerland

AutoNaut Ltd

Develops, manufactures, and operates wave-powered uncrewed surface vessels for long-endurance ocean research and data transmission.

Bristol, United Kingdom

Bhagwan Marine

Provides marine services and offshore support vessels for the resources, energy, and marine construction sectors.

Perth, Australia

Bluewater

Marine contractor and offshore technology company active in vessel operations, offshore construction, and FPSO-related services.

Hoofddorp, Netherlands

Boskalis

Provides offshore energy and marine services including subsea installation, heavy marine transport, and dredging-related support.

Papendrecht, Netherlands

Bourbon

Runs offshore marine services and vessels for the energy sector, with a focus on OSVs and subsea-related support.

Marseille, France

Bumi Armada

Delivers offshore marine and energy services, including vessel-based support and offshore production solutions.

Kuala Lumpur, Malaysia

C-Innovation

Integrated maritime services company specializing in ROVs, AUVs, subsea construction, survey and positioning, and tooling.

Mandeville, United States

DEME

Carries out offshore marine works including cable installation, seabed preparation, and subsea infrastructure support.

Zwijndrecht, Belgium

DOF Group

Delivers integrated marine and subsea services for fixed and floating offshore wind, including cable installation, transport, mooring, repair, and maintenance.

Bergen, Norway

Operates offshore supply vessels and provides marine transportation, subsea, and shipyard services.

Cut Off, United States

Eidesvik Offshore

Operates offshore service vessels for energy clients, including subsea, construction, and renewable-energy support.

Bømlo, Norway

Fugro

Provides geo-data services, including marine site characterization, geophysical and geotechnical surveys, and inspection services for offshore energy and infras

Leidschendam, Netherlands

Global Marine Group

Specialist subsea cable installation, repair, and maintenance services for telecom and power interconnectors.

Chelmsford, United Kingdom

Havila Shipping

Provides offshore support vessels for the oil and gas sector, including anchor handling and platform supply services.

Fosnavåg, Norway

Heerema Marine Contractors

Specializes in offshore transport, installation and removal of subsea and topside facilities, including deepwater project execution.

Leiden, Netherlands

Helix Energy Solutions Group

Provides rigless **subsea well intervention** and offshore well management services, including campaign-based intervention and late-life well work.

Houston, United States

Island Offshore

Operates offshore support and subsea vessels serving oil and gas, offshore wind, and marine operations.

Ulsteinvik, Norway

Jan De Nul Group

International dredging and marine engineering company active in coastal protection, reclamation, and dredging works.

Aalst, Belgium

McDermott

Engineering, procurement, construction, and installation contractor for offshore energy and subsea infrastructure projects.

Houston, United States

MMA Offshore

Marine support company providing subsea, offshore logistics, and vessel services to energy and resources clients.

Fremantle, Australia

N-Sea

Subsea services provider with a dedicated survey arm delivering hydrographic, geophysical and geotechnical survey work, plus UXO and inspection support.

Rotterdam, Netherlands

Ocean Infinity

Runs autonomous marine operations and subsea survey services, including uncrewed vessels and data collection for offshore energy and seabed mapping.

Southampton, United Kingdom

Ocean Installer

Subsea engineering and installation contractor focused on offshore energy projects, including subsea construction and field development.

Stavanger, Norway