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Seaway7, part of the Subsea7 Group, supports developers to bring sustainable, renewable energy to the world through the construction of offshore wind farms.

As a global leader in the delivery of offshore wind projects, Seaway7 offers specialist foundation, offshore substation, submarine cable, floating system and wind turbine installation services, and heavy transportation for the renewables sector.

With capabilities and an extensive expertise in project management, engineering, procurement and fabrication, Seaway7 can deliver these services in a comprehensive array of contractual structures including Engineering, Procurement, Construction and Installation (EPCI), (integrated) Transportation & Installation (T&I) and Balance of Plant (BoP) to our clients in the offshore wind industry.

Our people are at the heart of our business and are the key to our success. Seaway7 employs over 700 people onshore around the world, and has an offshore workforce of around 400.

Seaway7 provides a range of products and services through numerous commercial models;

  • Heavy Lifting:
    – Transport & Installation (T&I) of offshore structures e.g. foundations and substations
  • Offshore Cables:
    – Transport & Installation (T&I) of submarine cables
  • Floating System
    – Transport & Installation (T&I)
  • Wind Turbine Generators (WTG)
    – Transport & Installation (T&I) of WTGs
  • Heavy Transportation:
    – Highly engineered heavy marine transportation
  • EPCI Solutions & Integrated Projects:
    – Delivery of integrated T&I solutions for any combination of foundations, submarine cables and WTGs
    – Delivery of Engineering, Procurement, Construction and Installation (EPCI) solutions for foundation structures

Seaway7’s services are supported by a high-end fleet with enabling capabilities and scale, allowing efficient worldwide operations, while providing vessel flexibility and optionality to clients.

The active fleet comprises twelve specialist vessels designed for cable lay, heavy lifting and heavy transportation with an additional asset under construction. high-specification jack-up installation vessel will be delivered in 2023, designed for the installation of wind turbine generators and foundations. ​




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