South Korea plans to build and launch its first nuclear-powered submarine by the mid-2030s under a new defence programme aimed at countering North Korea’s growing submarine-based nuclear and missile capabilities.

President Lee Jae Myung said the project would symbolise South Korea’s commitment to peace and security on the Korean Peninsula while strengthening its defence posture alongside the United States.

Seoul’s Nuclear Submarine Push

South Korea has long sought to join the small group of countries operating nuclear-powered submarines, a move that could significantly alter Asia’s security dynamics.

Defence Minister Ahn Gyu-back said the submarine would run on low-enriched uranium fuel and be fully developed and built domestically.

The programme will rely on South Korea’s advanced shipbuilding, defence and nuclear industries while maintaining Seoul’s pledge not to develop nuclear weapons.

US Coordination and Global Oversight

Officials said South Korea would closely coordinate with the United States to secure low-enriched uranium fuel in line with non-proliferation commitments.

Seoul also plans to work with the International Atomic Energy Agency during the process.

Strategic Shift In Asia

Nuclear-powered submarines can remain underwater far longer and move more quickly than conventional diesel-powered vessels, giving South Korea improved stealth and operational reach.

The announcement comes amid growing regional security tensions and North Korea’s continued expansion of its nuclear and missile programmes.

Markets React

Shares of major South Korean shipbuilders surged after the announcement, with Hanwha Ocean and HD Hyundai Heavy Industries rising sharply as investors reacted to the scale of the planned project.

(with inputs from Reuters)