Offshore staff
LUXEMBOURG – LS Cable & System and Jan De Nul Group have completed the first lot of submarine power cables for TenneT’s Hollandse Kust (noord) and (west Alpha) offshore wind farms in the Dutch North Sea.
This first lot consists of the complete cables for Hollandse Kust (noord) (HKn) and the nearshore section for Hollandse Kust (west Alpha) (HKwA). In total, this is more than 90 km (56 mi) of cables, weighing 7,160 metric tons (7,893 tons) and having very large cross sections resulting in an overall diameter of more than 25 cm (10 in.)
Jan De Nul’s cable laying vessel Isaac Newton will load the 220 kV AC cables from LS Cable’s factory in Donghae, South Korea, and transport them to the project sites for installation in April 2022.
In the nearshore area, the Jan De Nul-developed tracked vertical injector Moonfish will bury the cables up to 8 m (26 ft) below the seabed level. The trencher UTV1200 will bury the cables offshore, supported by the multipurpose vessel Adhémar de Saint-Venant. The company will also install multiple cable protection systems and rock berms at the cable crossings along the route.
Jan De Nul Group and LS Cable & System are jointly responsible for the design, supply, installation, protection, and testing of the 210 km (131 mi) of submarine power cables for HKn and HKwA.
The HKn project is expected to be completed by the end of 2022. The HKwA project is planned to be finished by the end of 2023. Both wind farms will have an installed capacity of 700 MW.
11/22/2021
