The renewables business unit of Subsea 7 has landed a big Scottish contract which could be worth up to £600million.
Seaway 7 has been selected as a preferred supplier for the Seagreen 1A offshore wind project.
Seagreen 1A will be adjacent to the existing Seagreen development which Seaway 7 is currently working on.
Seagreen, off the Angus coast, is a joint venture between TotalEnergies (51%) and SSE Renewables (49%) and will be Scotland's largest and the world's deepest offshore wind farm when complete.
The Seagreen wind farm was consented with permission to install 150 offshore wind turbines.
One hundred and fourteen wind turbines are currently under construction with an installed capacity of 1,075MW and will be fully operational by early 2023.
The Seagreen turbines will provide enough green energy to power more than 1.6million homes - equivalent to two-thirds of all Scottish homes.
Seagreen 1A will allow connection of the remaining 36 turbines.
Seaway 7's scope of work for Seagreen 1A is under final negotiation and may include the full engineering, fabrication, transport and installation of 36 foundations, transportation and installation of the offshore substation and the procurement and installation of inner-array cables.
Execution will be led from Seaway 7's Aberdeen office.
The project is expected to commence in 2023, with offshore work commencing in late 2024 and could be operational by 2025-26.
The timeframe and Seaway 7's selection are subject to the Seagreen 1A project securing consent and a final investment decision by SSE Renewables and TotalEnergies.
Stuart Fitzgerald, chief executive of Seaway 7, said: "We are delighted to be continuing our successful relationship with SSE Renewables and TotalEnergies to progress the Seagreen 1A project. The project will continue to be managed from our office in Aberdeen where we are bringing over a decade of UK offshore wind expertise to Scotland's largest offshore wind project."
John Evans, chief executive of Subsea 7, added: "We are very pleased to be continuing our proactive participation in the UK's ongoing energy transition and we look forward to extending our long-term collaboration with SSE Renewables, which began in 2009 with the pioneering Greater Gabbard development and continued with Beatrice, Seagreen and Dogger Bank."