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Geosea completes installation of suction bucket foundations

Geosea Borkum Riffgrund 2

Geosea’s jack-up vessel ‘Innovation’ has successfully installed 20 suction bucket jackets at Borkum Riffgrund offshore windfarm in Germany.

Geosea’s scope involved the transport and installation of 20, 950t suction bucket jackets, each with a height of 58 m.

At Borkum Riffgrund 2, owned by Ørsted and Global Infrastructure Partners, is the first time Ørsted has utilised this type of foundation at one of its large scale wind farms. In 2014, GeoSea installed the first ever suction bucket jacket at Ørsted’s wind farm Borkum Riffgrund 1.

The suction bucket structure becomes firmly embedded in the seafloor by vacuum pressure, eliminating the need for hammering and significantly reducing noise during installation.

The first suction bucket jacket was installed in early June. 

Geosea Borkum Riffgrund 2

Geosea Borkum Riffgrund 2

Geosea project manager Borkum Riffgrund 2 Glenn Carton said: “The completion of this project further establishes our strong track record in providing innovative solutions for our offshore wind farm customers.

“Geosea is now one of the few companies with vast expertise and experience in suction bucket jacket installation. We are proud to support Ørsted in developing solutions to further bring down the costs of offshore wind energy. We also would like to thank our partners NGI and FRAMO for the successful cooperation in this pioneering project.”

When complete Borkum Riffgrund 2 will feature 56 Vestas turbines of 8MW and have a total capacity of 450 MW.

Geosea’s ‘Innovation’ will now head to the Hornsea Project One wind farm off East Anglian, where Geosea is currently installing 174 foundations.

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