Construction of the world's deepest fixed bottom offshore wind farm, which is also Scotland's largest, reached another milestone in late December with the installation of a jacket in preparation for the project's offshore substation topside, which is due to be installed early this year. Engineered, constructed and installed by Petrofac and weighing 5100 tonnes, the six-legged jacket is now fixed to the seabed, at a water depth of around 55 m. It will play a critical role in safely supporting the offshore substation above the sea during Seagreen's 25-year operational lifes-pan. The jacket has a seabed footprint of 43 × 43 m and has built-in tubing designed to guide the incoming 15 inter-array cables bringing the electricity generated by the turbines to the substation. In addition, the jacket also has tubing to guide the outgoing three export cables from the offshore substation to the seabed.
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