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Hoyle in one
2/3/04
Marine geotechnical contractor Seacore’s large diameter monopiles helped reduce installation costs per kW at the UK’s largest offshore windfarm

Specialist marine construction and geotechnical drilling contractor Seacore, worked round the clock to get the UK’s largest offshore wind farm at North Hoyle off to a flying start.

The company, working from its special and purpose-built eight-legged jack-up platform Excalibur, completed ahead of programme its contract to install 30 large 4m-diameter, 50m-long tubular steel monopile foundations in the seabed for the 60 MW North Hoyle Offshore Wind farm.

Seacore then followed on, under a separate contract, erecting the turbines. The company was also responsible for the design, build and installation of a 50m high fully instrumented, monopile supported meteorological mast.

The North Hoyle Offshore Wind farm, located between 8km and 11km off the coast of Rhyl, North Wales, is to be operated by National Wind Power Offshore. It is one of 18 sites around the UK coast, identified by Crown Estates in the first phase of offshore wind farm development.

The main contract for the construction of the wind farm was awarded to a consortium of Vestas-Celtic Wind Technology and Mayflower Energy . Seacore, working as specialist foundation sub-contractor to Vestas-Celtic Wind Technology, installed foundations from the Excalibur jack-up platform in water depths of 6m to 18m.

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