Ulstein delivers hybrid-ready CSOV to Bernhard Schulte Offshore

July 03, 2026

(WO) — Bernhard Schulte Offshore (BSO) has taken delivery of the Windea Clarke, the fourth commissioning service operation vessel (CSOV) built by Ulstein Verft for the company within the past year, further expanding its offshore service fleet. 

Caption 3: Naming of ‘Windea Clarke’: Lars Lühr Olsen, Managing Director Ulstein Verft; Martinus Warholm, Project Manager at Ulstein Verft; J. Kyrle, godmother's son; Godmother Helen Kyrle; Capt. Rainer Müller, Captain ‘Windea Clarke’; Matthias Müller, Managing Director Bernhard Schulte Offshore. ©Ulstein Group

The vessel is designed to support offshore construction, commissioning and operations and maintenance (O&M) activities. It is the seventh offshore wind service vessel based on Ulstein's design currently operating in BSO's fleet.

"Windea Clarke completes a strategically important series of vessels that strengthens our ability to support offshore projects with reliable tonnage while significantly reducing the environmental footprint," said Matthias Müller, managing director of Bernhard Schulte Offshore. "It enables us to deliver efficient and scalable services across construction, commissioning and maintenance phases to the global offshore energy industry."

The vessel features Ulstein's TWIN X-STERN® hull design, hybrid battery propulsion and a methanol-ready configuration intended to improve fuel efficiency and reduce emissions during offshore operations.

Windea Clarke is equipped with a height-adjustable walk-to-work gangway, an integrated elevator tower for personnel and cargo transfers, a helideck capable of accommodating helicopters up to 8.6 tonnes and a 3D motion-compensated crane with a lifting capacity of up to five tonnes. During sea trials, the vessel also achieved DNV's voluntary SILENT-E class notation for reduced underwater noise emissions.

"The delivery of Windea Clarke marks another milestone in our strong partnership with Bernhard Schulte Offshore," said Gunvor Ulstein, CEO of Ulstein Group. "Their continued trust in Ulstein reflects a shared ambition to push the boundaries of offshore vessel design."

The vessel joins sister ships Windea Curie, Windea Clausius and Windea Carnot, completing BSO's latest series of next-generation CSOVs.

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