The team working on what will be the world’s largest offshore windfarm, Dogger Bank, has started work on the foundation installation campaign for the second phase of the development
Seaway 7’s vessels Seaway Strashnov and Seaway Alfa Lift have commenced installation of monopile foundations and transition pieces for the Dogger Bank B phase of the offshore windfarm.
The team recently completed installation of all 95 transition pieces on Dogger Bank A, thus concluding the installation of the foundations for the first phase of the project.
The monopile foundations and transition pieces provide a base for GE Vernova’s 13-MW Haliade-X turbines. The monopile and transition piece structures were manufactured by Sif and Smulders and are being installed 129 km off the Yorkshire coast. The monopiles weigh up to 1,424 tonnes each and can measure up to 73 m in length.
The Dogger Bank transition pieces have a pioneering split-level design to support safe installation and operation and have a record-breaking 8-m flange to connect the monopiles and transition piece structures.
Work on Dogger Bank B follows on from the installation of the offshore HVDC platform for the second phase of the windfarm in April. A total of 277 monopiles and transition pieces will be installed across all three phases of the windfarm, with completion due in 2026.
Steel manufactured by Tata Steel in Wales and processed in Corby and Hartlepool is being used in the supporting components of the transition pieces, while South Tyneside-based Metec and Rochdale-based Granada Material Handling have also won contracts with Smulders to support the project.
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