TRIESTE – The NuProShip II (Nuclear Propulsion in Merchant Shipping) research project has reached an important milestone in the development of alternative energy solutions for the maritime sector.

The work has resulted in a concept design for an offshore construction vessel fitted with a small fourth-generation, helium-cooled nuclear reactor, used as the primary power source. The study was developed by VARD, Fincantieri’s Norwegian-controlled subsidiary, through Vard Design, in collaboration with DNV, Emerald Nuclear, Vard Electro, the offshore shipowner Island Offshore and the Norwegian University of Science and Technology.

Building on an existing VARD design, the concept analyses reactor integration in terms of onboard layout, safety, redundancy and overall system performance. The results indicate that a DP (Dynamic Positioning) vessel with a nuclear reactor is technically feasible and compatible with a DP2 architecture, with the possibility of evolving towards DP3 requirements as well. This would enable high operational reliability and a stable power supply for high-intensity offshore activities.
According to the study, nuclear power would make it possible to eliminate greenhouse gas emissions during operations and significantly extend the vessel’s autonomy. The project also assessed advanced energy storage solutions—such as CO₂ turbines and thermal battery systems—as alternatives or complements to conventional electrical batteries.

NuProShip II also addresses radiological safety and risk management, with the aim of defining new standards for civilian use of nuclear power in maritime transport. The project nevertheless acknowledges the need for an updated regulatory framework, greater industrial experience in the sector and a path to public acceptance based on transparency and communication.
Henrik Burvang, Head of Research and Innovation at Vard Design, said the study shows that nuclear-propelled ships are no longer merely a theoretical hypothesis but a technically practical solution, and that the direct involvement of an operating shipowner such as Island Offshore signals concrete market interest in this technology.
NuProShip II is a two-year project funded by the Research Council of Norway and will conclude in 2026.