Seaway 7

Seaway7 is a global offshore wind engineering and construction company specializing in the transportation and installation of offshore wind infrastructure. Headquartered in Oslo, the company operates as part of the Subsea7 Group and has established itself as one of the leading contractors in the offshore renewable energy sector. Since entering the offshore wind market in 2009, Seaway7 has built a strong international track record supporting major wind farm developments across Europe, Asia, and the United States. 

The company delivers a broad range of offshore wind services, including the transport and installation of wind turbine foundations, offshore substations, submarine inter-array and export cables, floating wind systems, and wind turbine generators. Seaway7 also provides integrated Engineering, Procurement, Construction and Installation (EPCI) solutions, Transportation and Installation (T&I) services, and Balance of Plant (BoP) contracts tailored to offshore renewable energy projects. Its operations are supported by a specialized fleet of heavy-lift vessels, cable-lay vessels, and heavy transportation ships designed for complex offshore installations. 

Seaway7 has participated in many of the world’s largest offshore wind developments, including projects such as Seagreen, Dogger Bank, Hollandse Kust Zuid, Moray East, Beatrice, and several major offshore wind farms in Taiwan and Poland. The company reports that it has installed more than 1,300 wind turbine foundations, over 3,400 kilometers of offshore cables, and more than 35 offshore substations globally. Its expertise in offshore engineering, marine operations, and project management has positioned the company as a key contributor to the global energy transition and expansion of renewable energy infrastructure.