N-Sea Group has been awarded a contract by Gwynt y Môr OFTO plc (GYM OFTO) for a further repair to one of the four export cables that form part of the transmission assets that it owns (which connect the Gwynt y Môr Wind Farm to the National Grid). Gwynt y Môr Wind Farm is a 576-Megawatt offshore wind farm located off the coast of Wales. The wind farm has 160 wind turbines of 3,6MW and has been in operation since 2013. GYM OFTO owns the transmission assets that connect Gwynt y Môr Wind Farm to the National Grid
The N-Sea scope includes replacing a 5km section of 132 kV export cable from the onshore transition joint bay (TJB) towards the offshore platform. This scope includes the pull ashore of the new cable through a horizontal directional drill (HDD) duct under a railway, dredging of the shore approach, jointing, and testing of the new cable and burial. N-Sea’s in-house Survey, UXO and Data Centre divisions will be engaged to engineer and deliver a new route for the new cable including as-built data upon completion.
N-Sea Group is gearing up for the repair campaign this summer. The work will be carried out using the company’s dedicated cable repair vessel, CURO, which was selected for its ability to handle the specific challenges at the site. The area is known for its high tidal range and shallow waters near the landfall.
The CURO is equipped with an 8-point mooring system that allows it to maintain position during operations, even in strong tidal conditions. It also has beaching capabilities, which enable the vessel to safely approach and work as close as possible to the landfall location, essential for repairs in nearshore, shallow-water areas. These features made it the ideal choice for this campaign.
“Our investment in dedicated assets like the CURO enables us to respond quickly and effectively to both planned and reactive repair needs,” said Patrick Bastiaanse – Commercial Manager Subsea Cables. “We are proud to bring this capability to our clients and maintain the high standards they expect from us. This is the 3rd repair for this client, and we appreciate the trust in N-Sea.”
GYM OFTO commented that “This will be the third offshore repair that N-Sea has carried out for us. They have continued to demonstrate their capability to explain their plans clearly and then complete these complex repairs competently and efficiently.”
About N-Sea
N-Sea is an integrated total subsea solutions provider in Survey, UXO ID & Disposal, IRM & Construction, and Subsea Cable Repair & Installation. We deliver total solutions for subsea infrastructures and assets that meet the needs of our clients and the international offshore energy industries, considering a safe (working) environment. We create substantial value through managing and reducing complex interfaces, solid project management & -support and full client focus and awareness. N-Sea Group is a privately owned company headquartered in The Netherlands with decades of experience, over 500 people employed, operating in EMEA region with a revenue of € 200 million in 2024.
At N-Sea WE LISTEN THEN DELIVER
www.n-sea.com
Media Contact:
Danielle Biermans
PR & Communications Advisor
📱 +31 (0)6 4897 6980
📧 d.biermans@n-sea.com
The N-Sea group includes the entities N-Sea Offshore B.V., N-Sea Offshore Wind B.V., and UXO Control B.V.
N-Sea Headquarters is located in The Netherlands. N-Sea offices are geographically favorable located to benefit key clients on their operations.
