PAPENDRECHT, the Netherlands – Ocean Winds, the joint venture between EDP Renewables and ENGIE, has contracted Boskalis to provide services for the Moray West offshore wind farm in the UK central North Sea.
The 882-MW development in the Moray Firth offshore eastern Scotland comprises 60 offshore wind turbines and two substations, all fixed on monopile foundations.
According to Boskalis, due to the large turbine size (14.7 MW) and water depth of up to 54 m, large XXL monopiles will be required weighing up to 2,000 t each.
The company has performed a geophysical site survey that included identification of unexploded ordnance.
Prior to installing the foundations, the company will undertake seabed preparation activities by installing a layer of rock to serve as a filter and scour protection for the monopiles.
Its DP crane vessel Bokalift 2 will then start installation of the monopiles using its 4,000-t crane with a new upending hinge and motion-compensated pile gripper.
In addition, the company will deploy a large impact hammer and a vibro-hammer, and it also will install two substations and their transition pieces.