South Korea has announced plans to develop and launch its first nuclear-powered submarine by the mid-2030s as part of a broader effort to strengthen its maritime defense capabilities and address security threats from North Korea.
Speaking in Seoul on Tuesday, Defence Minister Ahn Gyu-back outlined the government’s strategy to build a domestically developed submarine powered by low-enriched uranium fuel. The initiative is designed to counter North Korea’s submarine-launched nuclear and missile capabilities while remaining consistent with South Korea’s commitment not to acquire or develop nuclear weapons.
According to Ahn, the project will draw on the country’s advanced nuclear technology, shipbuilding expertise and defense industry capabilities. The government intends to construct the vessel entirely within South Korea, marking a significant step in the nation’s long-term defense modernization efforts.
Cooperation With the United States and IAEA
South Korea plans to work closely with the United States throughout the development process, particularly in securing low-enriched uranium fuel in a manner that complies with international non-proliferation standards.
The government also intends to cooperate with the International Atomic Energy Agency (IAEA) to ensure transparency and adherence to global nuclear safeguards.
Ahn emphasized that the program would remain focused on propulsion technology and would not alter Seoul’s longstanding policy against developing nuclear weapons.
Enhanced Underwater Endurance
South Korean officials have argued that nuclear propulsion would provide major operational advantages over conventional diesel-electric submarines. A nuclear-powered vessel can remain submerged for significantly longer periods and operate with greater mobility, expanding its range and effectiveness in maritime surveillance and deterrence missions.
The government has set a target of launching the first submarine in the mid-2030s, although further details regarding development timelines and budget allocations have not yet been disclosed.
