As the maritime industry faces mounting pressure to decarbonize without sacrificing range or reliability, nuclear energy has emerged as a novel and intriguing option, especially with China announcing plans in late 2025 to build the world's first nuclear container ship. Even so, the path forward for the technology remains far from certain, as regulatory questions and high upfront costs cloud the outlook, while commercial shipping struggles to find its place in an increasingly crowded nuclear renaissance.
Nuclear energy comes with a fair number of benefits as a maritime fuel. A nuclear-powered vessel can potentially go years between refueling, it produces no carbon emissions at sea and it offers more space for cargo since it eliminates the need for bulky fuel tanks. The technology is far from new. Russia's history of using icebreakers equipped with onboard nuclear reactors dates back to the late 1950s, the U.S. Navy operates the largest fleet of nuclear submarines in the world along with 11 nuclear-powered aircraft carriers, and China's bid to build a nuclear container ship powered by thorium instead of uranium is well underway.
So what is stopping ocean carriers from rolling out a fleet of ultra-efficient vessels powered by nuclear reactors right now? "The problem is the operational feasibility, and that's where it gets ludicrously expensive, fast," says Scott LaFoy, VP for nuclear and technology security programs at supply chain management platform Exiger. The biggest issue is the lack of infrastructure, since ports do not currently have any systems in place to host and refuel nuclear container ships, and establishing that infrastructure would represent a substantial investment.
From a supply chain perspective, the commercial scaling of nuclear container ships will require deep updates to the IMO's SOLAS and STCW frameworks, while "nuclear exclusion" clauses in P&I Club coverage will need to be revisited. Alongside the methanol and ammonia investments being pursued by Maersk, CMA CGM and NYK Line, nuclear could become a complementary medium-term decarbonization pathway, but commercial scale is unlikely before the 2030s. For BCOs, this introduces a new scenario layer in alternative-fuel surcharge planning.
