N-Sea to Execute Another Cable Repair for Gwynt y Môr Wind OFTO

N-Sea’s cable repair vessel, CURO. (Image credit: N-Sea)
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 MW offshore wind farm located off the coast of Wales. The wind farm has 160 wind turbines of 3.6 MW 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 5 km 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 Center 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.”

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