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.
Selected by McDermott as a subcontractor, Mammoet provided jacking, transport, and load-out services. McDermott was awarded the engineering, procurement, construction, and installation (EPCI) scope for the BorWin6 topside and jacket in 2022.
Construction of the offshore converter platform commenced at McDermott’s 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. The company’s winches were instrumental in mooring during quay activities.
The jacket and pin piles have been prepared for sailaway to Europe for the next project phase. Focus will now shift to the topside.
Later this year, Mammoet will complete the BorWin kappa topside jack-up and weighing, expected to weigh approximately 17,000 tonnes. The Mega Jack System, used for lifts over 40,000 tonnes, will assist in skidded loadout and sailaway preparation.
“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 operate in 2027, BorWin6 will collect three-phase current from offshore wind farms, converting it into direct current for transport to an onshore converter station near Büttel, Germany.
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