On October 10, Singapore-based offshore shipbuilder Seatrium announced that it received a notice of termination on October 9, 2025. The notice concerned a contract for the construction of a wind turbine installation vessel (WTIV) signed between Sembcorp Marine Rigs & Floaters, a subsidiary of the former Sembcorp Marine and Maersk Offshore Wind.
Sembcorp Marine Rigs & Floaters has merged with Keppel Offshore & Marine and is now known as Seatrium Energy (International) (hereinafter referred to as “SEI”).
The announcement disclosed that the WTIV order canceled by Haiting was contracted on March 23, 2022, with a construction cost of approximately $475 million. As of October 10, the WTIV had reached approximately 98.9% completion and was originally slated for deployment at the Empire Wind 1 offshore wind project in the United States.
In the announcement, Seatrium pointed out that SEI will explore feasible solutions to the cancellation of the order, including negotiations with the end customer Empire Offshore Wind LLC; at the same time, SEI is reviewing the validity of the termination notice of the shipbuilding contract and the allegations stated therein; it will also evaluate legal and commercial response options based on the contract terms, including the right to object to the termination notice and/or initiate legal proceedings to seek all available remedies for improper termination.
It is understood that the WTIV involved in this order cancellation commenced construction in the fourth quarter of 2022 and was launched in the second quarter of 2025. Under the original contract, the vessel was scheduled for delivery in early 2025. However, based on the shipbuilding progress disclosed in the announcement, the delivery date may have been postponed.
As the vessel will be deployed in the U.S. offshore wind market, Maersk Offshore Wind has also commissioned Bollinger Shipyards in the United States to build supporting tugboats and barges for it. These are scheduled for delivery in 2026 to meet the operational requirements of the U.S. Jones Act.
Headquartered in Singapore, Seatrium has over 60 years of experience in the design and construction of drilling rigs, floating structures, offshore platforms, and specialized vessels, as well as the repair, upgrade, and conversion of various types of vessels, according to its official website. Its core businesses include newbuilding and conversion projects in the oil and gas sector, offshore renewable energy, repair and upgrades, and new energy, with a growing focus on sustainable solutions to drive global energy transition and maritime decarbonization.
Seatrium operates shipyards, engineering technology centers, and related facilities in Singapore, China, Brazil, India, Indonesia, Japan, Malaysia, the Philippines, Norway, Saudi Arabia, the United Arab Emirates, the United Kingdom and the United States.