Posted on September 22, 2025
DEME is expanding its fleet with a new Offshore Construction Vessel (OCV), strengthening its subsea cable installation capacity to meet the evolving global offshore wind market. Designed for versatility, the vessel will be capable of executing trenching, burial, and cable-laying operations, complementing DEME’s existing cable installation vessels, Living Stone and Viking Neptun.
Based on the advanced Norwegian SALT 310 design, the 123-meter OCV will be equipped with a DP2 dynamic positioning system, a 150-ton active heave-compensated offshore crane, a hangar for two Work Class ROVs, a hybrid 1,000-kWh battery system, and a methanol-ready propulsion design for future fuel flexibility. Below deck, the vessel is configured to accommodate two 2,500-ton cable carousels, enabling swift deployment and seamless transitions between trenching, burial, and cable-laying operations. The vessel can accommodate up to 123 people.
Trenching and cable burial are vital steps in subsea cable installation, ensuring cables are safely positioned beneath the seabed. From the vessel, an ROV trencher can be launched to execute these operations, working in synergy with DEME’s cable installation fleet. Representing a sizable investment1, the OCV will be constructed by PaxOcean at the Zhoushan shipyard in China and is scheduled for delivery in 2028.
Hugo Bouvy, Managing Director Offshore Energy, said: “With more than 5,000 km of subsea cables installed across wind farms in Europe and the United States, DEME continues to support clients in delivering offshore projects efficiently and reliably. Building on this track record, the new OCV further enhances DEME’s cable installation capabilities and expands its versatile fleet of vessels and solutions.”
About DEME
DEME (Euronext Brussels: DEME) is a leading contractor in the fields of offshore energy, environmental remediation, dredging, and marine infrastructure. DEME also engages in concessions activities in offshore wind, marine infrastructure, green hydrogen, and deep-sea mineral harvesting. The company can build on nearly 150 years of experience and is a front-runner in innovation and new technologies. DEME’s vision is to work towards a sustainable future by offering solutions for global challenges: climate change, a growing population and urbanization, increasing maritime trade, and environmental issues. With a team of more than 5,800 highly skilled professionals and one of the most advanced fleets in the world, DEME is well- positioned to tackle even the most complex projects. DEME realized a turnover of 4.1 billion euros with an EBITDA of 764 million euros in 2024. For more information, please visit www.deme-group.com.
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Frederic Dryhoel Carl Vanden Bussche
dryhoel.frederic@deme-group.com vanden.bussche.carl@deme-group.com
+32 473 86 31 91 +32 498 90 61 13
