The Ulstein-designed ‘Acta Pegasus’, first of four newbuild walk-to-work (W2W) construction service operation vessels (CSOVs) for Acta Marine, has been delivered by Tersan Shipyard.
Acta Pegasus is built on the Ulstein SX216 platform and features the Ulstein Twin X-Stern hull, designed to offer enhanced fuel efficiency, superior DP capabilities, improved manoeuvrability, reduced motion, and lower noise levels. The vessel is equipped with advanced offshore access and lifting systems, including a 3D motion-compensated gangway and crane, supporting safe and efficient personnel and cargo transfers.
Acta Pegasus is methanol-ready, featuring dual-fuel engines capable of operating on marine gas oil (MGO) or a blend of MGO and methanol. The vessel incorporates substantial battery energy storage capacity, further optimising fuel efficiency and reducing emissions. These environmentally friendly technologies are designed to support the transition toward lower-emission offshore operations, reflecting Acta Marine’s commitment to sustainable solutions. The vessel will support offshore wind projects in France and contribute to renewable energy growth in the region.
Acta Pegasus accommodates up to 135 people. The delivery of Acta Pegasus marks a significant step in Acta Marine’s investment in a modern, sustainable, and future-ready fleet. Sister vessels Acta Hercules, Acta Gemini, and Acta Aquarius are scheduled to join the fleet throughout 2026, further strengthening Acta Marine’s capacity to provide reliable and efficient offshore support services.
W2W operations involve a heave-compensated gangway from the vessel connecting to an offshore installation for the safe transfer of personnel. Ulstein’s W2W ship designs are designed to support the effective commissioning, operation, and maintenance of offshore installations.
Image: ‘Acta Pegasus (source: Ulstein Design & Solutions)



