Seaway 7 ASA, together with its subsidiaries, engages in the provision of marine services worldwide. The company offers cable laying services, including submarine cable- and subsea umbilical installation, repair, and maintenance; marine cable route survey and route engineering; unexploded ordinance detection, identification, and removal; pre-lay grapnel runs and route clearance; boulder clearance and relocation; ROV intervention and dive support; rock bag and concrete mattress installation; and scour protection services, as well as cable storage solutions. It also provides installation of wind turbine generators (WTG), WTG foundations, and offshore substation jackets and topsides. In addition, the company transports substations, lift boats, cranes, power and cable-lay barges, jacket foundations, dredgers, modules, ship sections, offshore wind foundations, floating dry-docks, and other floating/non-floating cargoes, as well as jack-up and semi-submersible drilling rigs. The company owns and operates semi-submersible heavy transportation vessels, cable-laying vessels, installation support vessels, and heavy Lift vessels. It serves oil and gas, offshore, heavy construction, and other industries, as well as offshore renewables. The company was formerly known as OHT ASA and changed its name to Seaway 7 ASA in October 2021. Seaway 7 ASA was founded in 2006 and is headquartered in Oslo, Norway. Seaway 7 ASA operates as a subsidiary of Subsea 7 S.A.