A study led by Vard, a subsidiary of Italy’s Fincantieri, has found that nuclear-powered offshore vessels are technically feasible, confirming that small fourth-generation nuclear reactors can be integrated into dynamically positioned vessels while meeting safety, redundancy and operational requirements. Results from the NuProShip II research and innovation project show that nuclear propulsion can support DP2 power architectures, with potential adaptability to DP3 standards, offering high operational reliability alongside the possibility of zero greenhouse gas emissions and extended operating endurance.
As part of the project, Vard completed a concept design for a nuclear-powered offshore construction vessel based on an existing VARD reference design. The study evaluated the integration of a helium gas-cooled nuclear reactor as the primary power source and assessed impacts on vessel layout, safety systems and overall performance.
The project also examined alternative energy balancing solutions, including super-critical CO2 turbines and thermal battery systems, which could complement nuclear propulsion and reduce reliance on conventional electrical batteries. Short for ‘Nuclear Propulsion in merchant Shipping’, the NuProShip II study was led by Vard Design and conducted in cooperation with classification society DNV, Emerald Nuclear, Vard Electro, offshore vessel owner Island Offshore, and the Norwegian University of Science and Technology (NTNU), which served as project leader.
The study’s findings have significant implications for the maritime industry, highlighting the potential for nuclear-powered vessels to play a key role in reducing greenhouse gas emissions and improving operational efficiency. However, the study also emphasizes the need for updated regulatory frameworks, greater industrial experience in civilian nuclear marine propulsion, and sustained efforts to address public acceptance and environmental stewardship.
The NuProShip II project is funded by the Research Council of Norway and will conclude in 2026, paving the way for further research and development in this area.
This study marks an important step forward in the exploration of nuclear-powered vessels as a viable alternative for offshore construction and other applications. As the maritime industry continues to grapple with the challenges of reducing emissions and improving efficiency, innovative solutions like NuProShip II are crucial for meeting these goals.
