On 5 September 2025, Bernhard Schulte Offshore (BS Offshore) has taken delivery of its latest state-of-the-art Commissioning Service Operation Vessel (CSOV), WINDEA Clausius, yard number 321, from Ulstein Verft.
This second vessel in the SX222 series for BS Offshore continues the legacy of maritime innovation and operational excellence.
Designed by Ulstein Design & Solutions AS, the vessel features the pioneering TWIN X-STERN configuration, with azimuth propulsion at both ends, ensuring optimal performance in Dynamic Positioning (DP) operations, enhanced fuel efficiency, and improved operability in harsh offshore conditions.
Key features include a centrally located, height-adjustable walk-to-work gangway and elevator tower, a 3D motion-compensated crane for offshore lifts up to five tonnes, and a height-adjustable boat landing system for safe and stepless transfers between the CSOV and smaller crew transfer vessels. These features support safe and efficient operations in offshore wind farms and other demanding environments.
The vessel offers 90 cabins with daylight for charterers’ offshore personnel, and a total of 111 cabins, accommodating up to 132 individuals, with life-saving equipment for all onboard. Hybrid battery propulsion and methanol fuel readiness ensure low-carbon operations, aligning with the Schulte Group’s commitment to sustainability.
“The new ‘WINDEA Clausius’ completes our modern offshore fleet, which now comprises five state-of-the-art vessels,” says Matthias Müller, Managing Director at BS Offshore. “Together with her sister vessel ‘WINDEA Curie’, she is characterised by innovative design features, focused on reliability, operability, flexibility, and sustainability.”
“We are proud to deliver the WINDEA Clausius to BS Offshore, marking another milestone in our successful partnership. This vessel reflects our commitment to innovation and sustainability, delivering high performance with a minimal environmental footprint,” says Lars Lühr Olsen, Managing Director at Ulstein Verft.
Named after the German physicist Rudolf Clausius, a pioneer in thermodynamics. The other vessels previously delivered from Ulstein to BS Offshore are WINDEA La Cour, WINDEA Leibniz, WINDEA Jules Verne, and WINDEA Curie.