EUR100 million offshore cable installation contract awarded

Substation Borssele. Credit: Boskalis
Substation Borssele. Credit: Boskalis

Global dredging service provider Boskalis has been awarded the offshore export cables installation contract for the Hornsea 2 offshore windfarm, UK. The contract, awarded by renewable energy company, Ørsted Wind Power, consists of three export cable circuits with a total length of around 380 km.

The project scope includes the preparation of the offshore export cable route, including the geophysical survey, boulder clearance and seabed levelling through dredging. The installation and protection of the cables is also expected to be carried out by Boskalis.

Three 130-km-long export cables will connect the offshore substation to the onshore substation by 300 m horizontal directional drilling and will cross the sea defence of Horseshoe Point in the UK.

Boskalis will deploy a trailing suction hopper dredger, a geophysical survey vessel and multiple cable-laying vessels, as well as a new multi-mode ploy for both, the pre-laying trenching and backfiring. The plough will be pulled by Boskalis’s construction vessel Boka Falcon.

The Hornsea 2 offshore wind farm, situated approximately 90 km off the Yorkshire coast, will consist of up to 165 wind turbines with a maximum capacity of 1.4 GW and is projected to provide 1.6 million homes with energy.

The project is expected to commence in the second half of 2019 and slated to be completed by the end of 2021.