South Korea has announced a program to develop and deploy its first domestically built nuclear-powered submarine [1].
The initiative represents a significant shift in the nation's naval strategy to increase military autonomy. By developing this capability, Seoul aims to better counter submarine-launched nuclear and missile threats originating from North Korea [1, 3].
According to the Ministry of National Defense, the project involves a phased timeline for the new fleet. The government aims to launch the first nuclear-powered submarine by the mid-2030s [2]. Full deployment of the first vessel is expected to follow by the late-2030s [1].
President Lee Jae Myung and Defence Minister Ahn Gyu-back are overseeing the strategic push. The program is designed to strengthen the nation's ability to maintain a persistent underwater presence, a capability that conventional diesel-electric submarines cannot match due to frequent surfacing requirements for oxygen.
This domestic development project focuses on creating a sovereign deterrent. The Ministry of National Defense said the program is essential for ensuring long-term security in the region [1].
While the timeline spans more than 10 years, the project signals a transition toward more advanced naval technology. The development will take place within South Korea, with eventual deployment from Korean waters [2].
“South Korea has announced a program to develop and deploy its first domestically built nuclear-powered submarine.”
The move toward nuclear propulsion allows South Korean submarines to remain submerged for significantly longer periods, greatly increasing their stealth and surveillance capabilities. This shift suggests a strategic pivot toward a more independent defense posture, reducing reliance on external allies for high-end underwater deterrence against North Korea's evolving missile capabilities.
