Seatrium Energy International (SEI) has launched arbitration proceedings against Maersk Offshore Wind’s affiliate Phoenix II A/S, escalating a dispute over a wind turbine installation vessel contract, the company said on Friday.
SEI said the notice of arbitration was filed on 28 November 2025 under the terms of the London Maritime Arbitrators Association. The move follows Maersk Offshore Wind’s decision on 9 October to terminate a contract for the construction of a jack-up vessel intended for Equinor’s Empire Wind 1 project off the U.S. northeast coast.
According to Seatrium, the arbitration seeks a declaration that Phoenix II A/S “wrongfully terminated the contract on 9 October 2025 and that the contract remains valid.” The company added that it is requesting an order requiring the buyer to take delivery of the vessel on 30 January 2026 and pay the delivery instalment due.
SEI said it is also seeking damages, to be assessed by the tribunal, and reiterated that under the legacy contract “80% of the contract price is payable on delivery.” The company said the financial implications of the arbitration would depend on the eventual outcome. It added that further announcements would be made “when there are material developments.”
Maersk Offshore Wind is pursuing a separate arbitration claim related to the vessel.
