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South Korea aims to launch first nuclear-powered submarine by the mid-2030s

South Korea plans to develop its first nuclear-powered submarine by the mid-2030s to strengthen its defense against North Korea’s submarine-launched missile threats. The program will rely on domestic shipbuilding and nuclear industries, with cooperation from the U.S. and international agencies on fuel safeguards.

Reuters

26 May 2026 at 10:50:32

South Korea aims to launch first nuclear-powered submarine by the mid-2030s

An image of the national flag of South Korea courtesy of Daniel Bernard/Unsplash via Wix

Daniel Bernard/Unsplash via Wix

South Korea will seek to launch its first nuclear-powered submarine by the mid-2030s, under a new programme aimed at countering North Korea's submarine-launched nuclear and missile threats, Defence Minister Ahn Gyu-back said on Tuesday.


The submarine will use low-enriched uranium fuel and be developed and built in South Korea, Ahn said, laying out South Korea's basic plan for securing nuclear-powered submarines.


Ahn said the programme would draw on South Korea's nuclear, shipbuilding and defence industries, while maintaining Seoul's commitment not to acquire or develop nuclear weapons.


South Korea will work closely with the United States during the process of securing low-enriched uranium fuel to ensure non-proliferation and will also work with the International Atomic Energy Agency, Ahn said.


The plan aimed for the first vessel to be launched in the mid-2030s, Ahn said.


Nuclear propulsion would give the new submarines the ability to stay underwater far longer and ensure greater mobility than existing South Korean submarines, the government has said.


-Reporting by Joyce Lee;Editing by Ed Davies/Reuters

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