20 Oct 2025
Nuclear propulsion is emerging as a transformative solution for achieving zero-carbon shipping, especially for deep-sea vessels. In a recent presentation in Ålesund, Norway, Professor Jan Emblemsvåg from NTNU emphasized that replacing fossil fuels with green ammonia would require an impractical amount of renewable energy—over 10,000 TWh annually. This stark reality positions nuclear energy as a viable alternative for long-haul maritime operations.
Advanced reactor designs, such as molten salt and helium gas-cooled systems using TRISO fuel, offer enhanced safety, low pressure, and passive shutdown capabilities. These innovations eliminate risks associated with older reactor types and make nuclear propulsion more feasible for commercial use.
While challenges remain—such as insurance, public perception, and port infrastructure—the potential benefits are compelling. Nuclear propulsion could significantly reduce emissions, increase cargo efficiency, and support the IMO’s 2050 climate goals. With careful planning and international cooperation, nuclear-powered shipping could redefine the future of sustainable maritime transport. Read more