Jan de Nul and LS Cable & System have completed manufacturing of the first 90km of submarine power cables for TenneT’s 700MW Hollandse Kust Noord and 700MW West Alpha wind farms in the Netherlands.
The first batch, weighing 7160 tonnes, consists of the complete cables for Hollandse Kust Noord and cables for the nearshore section of the Hollandse Kust West Alpha project.
Jan de Nul’s cable laying vessel Isaac Newton will load the 220kV AC cables from LS Cable’s factory in Donghae, South Korea, and transport them to the projects for installation in April 2022.
In the nearshore area, the in-house developed tracked vertical injector Moonfish (pictured) will bury the cables up to eight metres below the seabed level, Jan de Nul said.
Cable burial offshore will be carried out by the trencher UTV1200, supported by the multipurpose Adhemar de Saint-Venant vessel, the company added.
Jan de Nul will also install multiple cable protection systems and rock berms at the cable crossings along the route.
Delivery of the Hollandse Kust Noord project is expected by the end of 2022, while Hollandse Kust West Alpha is planned to be finished by the end of 2023.
Jan de Nul project manager Jeroen Devos said: “The successful delivery of the first 90 km of cables is the first major milestone for our project.
“We look forward to installing these cables in Q2 2022 by means of our custom-built tracked vertical injector Moonfish and our offshore installation vessels Isaac Newton and Adhémar de Saint-Venant.”
LS Cable & System project manager Myung Sun Kim said: “We are delighted to announce that we successfully manufactured and tested the first 90 km of submarine cable for the Hollandse Kust Noord and West Alpha wind farms.
“The manufacturing and testing is well ahead for the planned load-out onto Jan De Nul’s vessel Isaac Newton in the course of Q1 2022.
“We are confident and looking forward to proceeding with this first load-out together with the Jan de Nul team.”