On 11 March 2026, Ulstein Verft, Norway, delivered the Windea Carnot, a Commissioning Service Operation Vessel (CSOV). The vessel was built on behalf of an institutional investor and has now been handed over to its new owner, Bernhard Schulte Offshore (BSO).
The ‘Windea Carnot’ is the third of three sister ships built at Ulstein that BSO has integrated into its modern offshore fleet since the middle of last year. BSO now operates six specialised vessels serving the global offshore energy industry.
The vessel features Ulstein’s TWIN X STERN® solution, providing exceptional manoeuvrability, reduced vessel motion, and improved fuel efficiency.
Featuring hybrid battery propulsion and prepared for future methanol fuel use, the CSOV is designed for low-emission operations and is well-suited for both operations and maintenance (O&M) as well as construction support activities, including deployments in demanding offshore conditions.
The CSOV, offering comfortable single cabins for up to 90 charterers’ offshore personnel, is fitted with a centrally positioned, height-adjustable walk-to-work gangway and elevator tower to enable safe personnel and cargo transfers.
Furthermore, the ‘Windea Carnot’ is equipped with a helideck for helicopters with a maximum take-off weight of up to 8.6 tonnes. A 3D motion-compensated crane with a lifting capacity of up to 5 tonnes supports offshore handling operations, while generous storage areas and step-free access optimise onboard logistics. In addition, a height-adjustable boat-landing system enables stepless transfer between the CSOV and smaller crew transfer vessels, a key safety feature when operating in offshore wind farms.
The newbuilding is named after the French physicist and engineer Nicolas Léonard Sadi Carnot, who is widely regarded as the father of thermodynamics. This naming continues the tradition of the two previous sister ships, ‘Windea Curie’ and ‘Windea Clausius’, also named after outstanding scientists.