Windcat has signed a contract with Damen Shipyards Group at the Offshore Energy Conference in Amsterdam to deliver a new type of offshore support vessel.
The vessels, known as the Innovation Series, are designed for offshore energy work, combining a large deck with a subsea crane, fuel-efficient engines, and comfortable accommodation for people working at sea for long periods.
The Innovation Series builds on the earlier collaboration between Damen and Windcat on the Elevation Series CSOVs. While based on the CSOV design, these new vessels are larger, measuring 102 metres long and 20 metres wide. They have around 750m² of deck space, a crane that can lift 150 tonnes, and equipment to launch and recover remotely operated vehicles (ROVs).
The vessels include a 3,981 kWh battery pack to reduce emissions. This helps the engines run efficiently, especially during precise manoeuvres at sea. They also have a dual-fuel hydrogen engine, allowing part of the vessel to run on hydrogen.
Up to 190 people can stay on board for at least 28 days. A motion-compensated gangway lets personnel safely move between the vessel and offshore structures. The interior design focuses on easy navigation, good materials, and comfort to reduce seasickness and make long stays at sea easier.
The vessels have a DP2+ dynamic positioning system, which helps them maintain position in difficult conditions. They include azimuth thrusters and additional tunnel thrusters, allowing the vessel to continue working even if one thruster fails.
Damen and Windcat say the project reflects their shared approach of combining safety, efficiency, and sustainability in offshore support.
Construction of the first vessel will start in February 2026, with delivery expected in 2028. The contract also includes the option for five additional vessels of this type. The vessels will be built at Damen’s Ha Long Shipyard in Vietnam, as with the previous CSOVs.
