This second vessel in the SX222 series for BS Offshore continues the legacy of maritime innovation and operational excellence.
The TWIN X-STERN
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.
Equipped for safe and efficient offshore operations
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.
Low emissions and comfort at the forefront
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.
Innovative, reliable, operable, flexible, sustainable
“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.
About the companies:
Bernhard Schulte Offshore (BS Offshore) is the offshore unit of the Schulte Group. Founded in 2015, Hamburg-based BS Offshore, as an asset provider, is responsible for the group’s offshore activities in the offshore wind, oil, and gas markets. The Schulte Group is an international, family-owned group of companies specialising in ship owning, ship management, maritime software solutions, maritime services and asset management.
Ulstein, established in 1917, is a third-generation family-owned company and an internationally renowned provider of ship designs, shipbuilding and system solutions for ships. Ulstein is turning visions into reality together with its customers and keeps pushing progress in the maritime industry.
Naming ceremony
The WINDEA Clausius was named at Ulstein Verft on 4 September 2025.
