Maersk Offshore Wind has formally introduced Maersk Viridis, a newly built wind turbine installation vessel (WTIV) constructed by Seatrium, marking the first vessel to join the company’s emerging offshore wind installation fleet. The vessel was christened during a ceremony held on board, where its godmother, Charlotte Nørkjær Larsen, carried out the traditional naming ritual.
The 40,000-tonne vessel was delivered by Seatrium following the completion of sea trials and final readiness assessments. Designed for the installation of offshore wind turbines in the 15+ megawatt class, the WTIV is fitted with a 1,900-tonne main crane that features a hook height of 180 meters, enabling the handling and installation of large-scale turbine components in offshore environments.
Seatrium Delivers Next-Gen WTIV Newbuild to Maersk Offshore Wind. The vessel incorporates a feeder-based installation concept supported by a stabilizing system that allows feeder vessels to remain securely positioned during component transfers, including in challenging sea conditions. This configuration is intended to widen operational weather windows while helping reduce both turbine installation time and associated project costs. The vessel’s name, Viridis, draws from the Latin word for green, reflecting its connection to the renewable energy transition.
Following the naming ceremony, the captain and crew of Maersk Viridis welcomed attending guests on board for guided tours of the vessel. The WTIV is expected to depart for the United States in March 2026 to begin work on its first assignment at Equinor’s Empire Wind project offshore New York. There, the vessel will assist with installing turbines that are planned to supply electricity to around 500,000 homes. Developed as a Jones Act–compliant solution, the vessel can also operate in other offshore wind markets. Seatrium noted that the construction program involved heavy-lift operations as well as full system integration and validation by international classification societies, and it was completed with zero lost time injuries.