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Nuclear molten salt could power future cargo ships | Popular Science

Published

24 July 2026

Topic

technology

Sectors

Energy StorageMaritime Tech

Geography

South KoreaUnited States

Source

Read at popsci.com

Verified

Fusion42 · 25 July 2026 · Fusion42 review

South Korea's KRISO, Samsung Heavy Industries, and KAERI received regulatory approval-in-principle from the American Bureau of Shipping for a cargo ship powered by two molten salt nuclear reactors, capable of carrying 15,000 containers at 25 knots. The design represents a shift from conventional water-cooled reactors to smaller, more efficient molten salt technology for commercial maritime propulsion.

This Wire brief sits within Fusion42's coverage of Energy Storage and Maritime Tech. Wire is Fusion42's founder-focused intelligence feed: each story is connected to the funds and startups it names — every one with a live profile on Raise or Scout — so founders can follow the capital and the momentum behind the headline rather than just the headline itself. Wire analysis is one of the live surfaces Arthur reasons over.

◆ The Wire takeaway

If you build ship components, cooling systems, or radiation shielding, you now have a concrete pathway to a buyer—ABS approval means this reactor design moves from lab to build phase. The molten salt reactor on this ship needs suppliers, and the first mover captures the specification.

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Topics

Energy StorageMaritime Techmolten-salt-reactorsmaritime-decarbonisationshipping-energynuclear-innovationregulatory-milestone