Heavy Offshore Construction

The Anchor Handling Tug Supply Vessel (AHTS) "Odin Viking" arrived at Ulstein Verft on 1 February 2025 to install a brand-new Launch & Recovery system (L-LARS) from Evotec, a supplier based in Ulsteinvik.

Offshore wind farms are currently serviced using Crew Transfer Vessels (CTVs) or helicopters for day operations, and Service Operation Vessels (SOVs) for extended periods. What if there were a CAPEX-smart design that reduces building costs by over 50% compared to an SOV and supplement the SOVs on most tasks? 

Penta-Ocean Construction, a prominent Japanese general contractor, has commissioned Ulstein Design & Solutions B.V. to design its new heavy lift vessel for offshore wind foundation installation. The customised ULSTEIN HX118 design will feature a 5,000-ton Huisman main crane and the ULSTEIN U-STERN™, which enables the installation of increasingly larger monopile foundations.

In a landmark deal, Ulstein Design & Solutions AS has secured its largest aftermarket design contract to date for the cable-laying vessel Orient Adventurer. The contract, awarded by Dong Fang Offshore (DFO), involves both basic design and engineering provided by several of the companies in Ulstein. 

In close collaboration with Heerema, Ulstein Design & Solutions BV has provided engineering services for integrating the innovative motion-compensated gripper frame (MCGF) on Heerema Marine Contractors’ ‘SSCV Thialf’. This technology is key to efficiently installing large monopiles for offshore wind farms, driving progress in the renewable energy sector. The semi-submersible crane vessel is essential in advancing offshore wind technology, aiding the construction of future wind farms essential for the global energy transition.

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.