South Korea plans first nuclear-powered submarinefirst nuclear-powered submarine by mid-2030s
South Korea said on May 26 that it aims to launch its first nuclear-powered submarine by the mid-2030s under a new defense program.
The plan is meant to counter North Korea’s submarine-launched nuclear and missile threats, but it still faces U.S. consultations, non-proliferation concerns and budget pressures.
The move matters because it would reshape South Korea’s undersea deterrent and affect regional security debates.
South Korean Government
Seoul presents the submarine plan as a response to North Korea’s growing undersea missile threat and a step toward stronger deterrence. Officials say the project is part of a broader effort to modernize the navy over the next decade.
Analysts and Critics
Analysts note that the plan is not just an engineering project but also a diplomatic one, because it depends on consultations with Washington and scrutiny over nuclear fuel use. They also point to cost and proliferation concerns that could slow or reshape the program.
- South Korea already operates one of the world’s most capable conventional submarine fleets.
- Nuclear-powered submarines can remain submerged for months, limited more by crew supplies than fuel.
- South Korea hosts U.S. forces, which makes major defense decisions closely watched in Washington.
