The shipbuilding construction of Nexans Electra is approaching its final phase in the dock, before the comprehensive work continues quayside ahead of sea trials in spring 2026. How do you organise a staff of hundreds of workers, subcontractors and suppliers over several months to deliver the project on time and within budget? Join project manager Runar Toftesund at Ulstein Verft for a look behind the scenes.

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.

On Friday 15 August 2025, the hull for a new offshore wind service vessel of the CSOV type arrived at Ulstein Verft. This marks a new step in the process towards the completion of this state-of-the-art vessel, which has been developed to support energy-efficient offshore wind operations with high performance.

The hull of the state-of-the-art DP3 cable-laying vessel Nexans Electra arrived at Ulstein Verft on 5 July 2025. This marks the commencement of the outfitting and completion phase of the vessel. Upon completion in 2026, she will feature a split turntable on deck capable of holding up to 10,000 tonnes of cable, an under-deck turntable with a 3,500-tonne cable capacity, and a fibre optic tank with a 450-tonne capacity.

26 June 2025 – Bernhard Schulte Offshore (BSO) has taken delivery of the state-of-the-art, commissioning service operation vessel (CSOV) WINDEA Curie, yard number 320 from Ulstein Verft. 

Ulstein Group recorded revenues of NOK 3.1 billion and an operating profit of NOK 198.8 million in 2024. 

Oslo, 26 March 2025: At the Undersea Defence Technology conference, thyssenkrupp Marine Systems and Ulstein Verft signed a Letter of Intent to collaborate on delivering the Royal Norwegian Navy's next advanced frigates.

On 11 March 2025, the hull of yard number (Yno) 321 for BS Offshore arrived at Ulstein Verft. This marks the beginning of a new phase in the shipbuilding process. The vessel is designed by Ulstein Design & Solutions AS for ‘walk-to-work’ (W2W) operations, where personnel walks via a motion-compensated gangway from the ship to a wind turbine.

BS Offshore and Ulstein Verft has passed a significant milestone with the launch of the Yno 320, a state-of-the-art Commissioning Service Operation Vessel (CSOV). 

Four state-of-the-art TWIN X-STERN CSOV vessels for Acta Marine, are currently in various phases of construction at the Tersan Shipyard, Türkiye. The vessels are designed by Ulstein Design & Solutions AS. 

Innovative deliveries for more sustainable operations.

On 19 December 2024, the CRIST shipyard, Poland, carried out the keel laying ceremony for an ULSTEIN SX222 designed vessel, which will be Ulstein Verft's yard number 323, built for institutional investors.

The hull of the first TWIN X-STERN Commissioning Service Operation Vessel (CSOV) for BS Offshore arrived Ulstein Verft on 18 December 2024. This milestone marks the start-up of the outfitting for Yard Number 320 at Ulstein Verft. 

On 1 October 2024, the steel cutting ceremony for Ulstein Verft’s yard number 323 was held at the Crist hull yard. The Commissioning Service Operation Vessel (CSOV) is based on the award-winning TWIN X-STERN platform and has been designed by Ulstein Design & Solutions AS.

The keel laying ceremony at Crist hull yard 06 August 2024 symbolizes that yard number 322 is one step closer to realization. The CSOV vessel, based on a TWIN X-STERN platform designed by Ulstein Design & Solutions AS, will be capable of performing a vast range of operations, including Operation & Maintenance and construction support.