The 2.5X Gamble: Nuclear-powered LNG Carriers Could Upend Maritime Shipping

September 30, 2026 · 14 hours ago

A new study shows nuclear ship propulsion can cut costs and regulatory risks and examines the possibility of treating reactors as reusable assets.

Sailing into a nuclear era no longer seems like such a distant prospect, as a joint study has now shed light on nuclear propulsion's game-changing potential for liquefied natural gas (LNG) carriers, which will cost roughly 2.5 times more than a conventional LNG vessel, but factoring in skyrocketing fuel costs and tightening global regulations might just make that steep initial price tag look like a bargain.

A joint study by the American Bureau of Shipping (ABS), a classification society, Blossom Energy, a Japanese deep-tech player, and a global shipping company has examined what maritime nuclear propulsion could actually look like in practice through a fresh look at a 174,000-cubic-meter (cbm) LNG carrier equipped with a 20-25 MWe high-temperature gas-cooled reactor (HTGR) under development by the Japanese firm.

Patrick Ryan, ABS Senior Vice President and Chief Technology Officer, commented: “Nuclear energy has the potential to fundamentally change the economics of commercial shipping, from vessel design to long-term operating costs. ABS is proud to support studies like this one that move the industry beyond theory and toward a clearer picture of what nuclear propulsion could mean in practice.”

While the hardware carries a heavy upfront cost, this study has revealed that the design’s ability to enable fuel savings and clever lifecycle business models could change the game for global trade, after assessing vessel arrangement, propulsion systems and operating conditions against a conventional LNG-fueled newbuild.