Jacket Foundation for BorWin Kappa Offshore Converter Platform Loaded Out in UAE

Mammoet has completed the transport, load-out and mooring of the jacket foundation for the BorWin kappa offshore converter platform at McDermott’s yard in Dubai, UAE. BorWin kappa is part of TenneT’s 980 MW BorWin6 offshore wind grid connection in the German North Sea.

The Dutch company has been selected as a subcontractor to provide jacking, transport and load-out services by McDermott, which was awarded the engineering, procurement, construction and installation (EPCI) scope for the BorWin6 topside and jacket in 2022.

McDermott started building the offshore converter platform at its Jebel Ali yard in July 2023.

Mammoet transported the 5,461-tonne jacket foundation using 216 axle lines of self-propelled modular transporters (SPMTs) powered by four power pack units, while the company’s winches supported mooring management during quay activities.

The jacket and its pin piles have been secured for sailaway to Europe for the next phase of the project, according to Mammoet, which said the focus will now shift to the topside.

Later this year, Mammoet will complete the BorWin kappa topside jack-up and weighing, with the topside expected to weigh approximately 17,000 tonnes. For this operation, the company will use its Mega Jack System, which has been used for lifts in excess of 40,000 tonnes, and will prepare the topside for skidded loadout and sailaway later in the year.

“This jacket loadout is an important step for BorWin6 and it reflects the level of planning and control needed in a busy fabrication environment. As the project moves into its next phases, our team is now focused on preparing for the upcoming jack up, weighing and loadout of the topside later in 2026”, said Tom Brazier, Mammoet Project Manager.

Scheduled to go into operation in 2027, BorWin6 will collect three-phase current generated at the offshore wind farms, which will then be converted into direct current and transported to an onshore converter station located near Büttel, Germany.

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