Europe’s market-leading offshore personnel transfer company Windcat has placed an ordersfor the construction of a series of hydrogen-powered Commissioning Service Operation Vessels with Damen Shipyards. The “Elevation Series” CSOVs have been designed by Damen Shipyards in cooperation with Windcat and CMB.TECH. The result is a revolutionary new design with increased capabilities and flexibility compared to existing vessels. The vessels are 87 m long, 20 m wide, can accommodate 120 people on board and will be powered by hydrogen. The series will be delivered from 2025. The CSOVs will be built at Ha Long Shipyard, Vietnam, and will be delivered to Windcat Offshore, a new business unit within Windcat, which will focus on offshore energy commissioning and services. Initially, two vessels have been ordered with options for further vessels. A CSOV is a vessel that remains in an offshore wind farm for an extended period of up to 30 days, providing maintenance materials and housing technicians in hotel-style accommodation. This logical next step in Windcat’s journey builds on Windcat’s 20 years of experience in the offshore renewable energy sector and follows four years of market and vessel design evaluation. To significantly reduce the vessels’ CO2 footprint, Windcat and CMB.TECH, will provide the same dual fuel hydrogen technology for the Elevation Series as on board of the Hydrocat, the world’s first hydrogen powered CTV (Crew Transfer Vessel). This approach will also make a critical contribution to the development of rules and regulations related to the use of hydrogen as a fuel in medium-sized vessels.