Maersk’s new wind turbine installation vessel, built by Seatrium, has completed sea trials and is on track for delivery by 28 February 2026, the owner said.
The WTIV is intended for work on Equinor’s Empire Wind offshore wind development in the United States. The vessel was launched from Seatrium’s Tuas Boulevard Yard in Singapore in May 2025 and has since progressed through commissioning and trials, most recently in the South China Sea.
The project moved back onto a delivery path after a contract dispute last year. Maersk terminated the $475 million shipbuilding agreement on 10 October 2025, after which both sides initiated arbitration. The companies reached a settlement in December 2025, with Maersk agreeing to take delivery of the vessel in 2026.
Operationally, the WTIV is designed around Maersk Offshore Wind’s feeder-based approach. Under this setup, the WTIV stays at the installation site while feeder vessels shuttle turbine components out from port, aiming to keep installation work moving with fewer relocations.
Both the WTIV and the feeder vessels feature locking and stabilising technology intended to support safe operations in harsh environments. Maersk Offshore Wind has said the Jones Act-approved concept can reduce the number of days required to install an offshore wind farm by 30 per cent.
Earlier details shared about the WTIV list an overall length of 145 m and note it will sail under the Danish flag.
