DEME is expanding its fleet with a new Offshore Construction Vessel (OCV) to strengthen its subsea cable installation capacity and meet the evolving global offshore wind market. The vessel is designed for versatility and will be capable of executing trenching, burial, and cable-laying operations. The new OCV will complement DEME's existing cable installation vessels, Living Stone and Viking Neptun. This expansion comes as the company positions itself to address growing demands in the offshore wind sector.

Vessel Specifications and Design

The 123-meter OCV is based on the advanced Norwegian SALT 310 design. The vessel will feature a DP2 dynamic positioning system, providing enhanced stability and precision during operations. A 150-ton active heave-compensated offshore crane will be installed to handle heavy lifting requirements during subsea cable installation projects. The vessel includes a hangar designed to accommodate two Work Class ROVs (Remotely Operated Vehicles).

This capability will enable underwater operations and inspections necessary for cable installation and maintenance work.

Environmental and Power Systems

The OCV will be equipped with a hybrid 1,000-kWh battery system, incorporating modern energy storage technology into its operations. The vessel features a methanol-ready propulsion design, providing future fuel flexibility as the maritime industry transitions toward alternative fuels. This propulsion system design enables DEME to adapt to future changes in environmental regulations and fuel availability, while maintaining operational efficiency.

Operational Capabilities

Below deck, the vessel is configured to accommodate two 2,500-ton cable carousels. This configuration enables swift deployment and seamless transitions between trenching, burial, and cable-laying operations. The dual carousel system allows for continuous operations and reduces downtime during cable installation projects. The vessel can accommodate up to 123 people, providing sufficient capacity for crew members, technicians, and specialists required for complex subsea cable installation operations.

This accommodation capacity supports extended offshore operations and allows for the deployment of specialized teams for different aspects of cable installation projects. The vessel's design integrates multiple operational capabilities into a single platform, allowing it to perform trenching operations to prepare the seabed, burial operations to protect installed cables, and cable-laying operations to deploy the subsea infrastructure. This multi-functional approach streamlines project execution and reduces the need for multiple specialized vessels.

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