Norway leads push to bring nuclear propulsion to commercial reality in International Shipping News , Shipping: Emission Possible 14/05/2026 With demonstration projects now underway – including a nuclear-powered LNG tanker and an offshore vessel – the debate is shifting from whether nuclear shipping is possible to how it can be delivered. Here, Jan Emblemsvåg, Professor at the Norwegian University of Science & Technology (NTNU)’s Department of Ocean Operations and Civil Engineering in Ålesund, argues that the key barriers are no longer technical, but regulatory, commercial and political. Nuclear propulsion is returning to the maritime agenda through projects now taking shape in Norway. Two demonstration concepts are in development: a nuclear-powered LNG tanker, backed by Knutsen OAS, and a specialised offshore vessel being developed with Island Offshore. This work is supported by a broader research and industrial effort – including the recently completed NuProShip II project – where ship designers, class and operators are examining how small modular reactors can be integrated into real vessel concepts. The focus is no longer on whether nuclear propulsion is possible but on how it can be implemented – and what stands in the way. WHY NUCLEAR SHIPPING DID NOT SUCCEED BEFORE This is not a new idea. When the US Maritime Administration-owned NS Savannah entered service in the 1960s as the world’s first nuclear-powered merchant vessel, nuclear propulsion was widely seen as a future option for commercial shipping. But then everything stalled. Fossil fuels remained cheaper, and the administrative burden – particularly around port entry – was difficult to manage. Prevailing reactor designs would also have struggled to meet later regulatory requirements. The vessel itself, combining passenger and cargo functions, proved commercially inefficient. Nuclear propulsion, however, did continue in naval fleets, where governments can absorb costs and risks that are not acceptable in