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Dogger Bank B Begins Foundation Installation

Installation has started of the monopile foundations and transition pieces for Dogger Bank B, the 1.2-GW second phase of the 3.6-GW Dogger Bank wind farm off the British coast in the North Sea, it was announced on Tuesday.

The work is being carried out by the vessels Seaway Strashnov and Seaway Alfa Lift of Seaway7, part of the Subsea7 Group.

The team recently completed installation of the foundations at Dogger Bank A, which produced first electricity in October 2023. Dogger Bank is a joint venture between SSE Renewables, Equinor and Vargronn.


Seaway Strashnov is back to the project after working last year on Dogger Bank A.

“After introducing our brand-new heavy lift vessel Seaway Alfa Lift to the project in October, the vessel operated through the high weather season installing transition pieces on Dogger Bank A, and now continues this work in phase B,” explained Seaway7 project director Wouter van Dalen.


The monopile foundations and transition pieces, by Sif and Smulders, are being installed about 130 km (80 miles) off the Yorkshire coast. They will support GE Vernova’s 13-MW Haliade-X turbines.


Seaway7 will install a total of 277 monopiles and transition pieces across Dogger Bank A, B and C, with completion expected in 2026.

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