South Korea launches its first nuclear submarine by 2030

Published on May 28, 2026 | Translated from Spanish

South Korea plans to have its first nuclear-powered submarine ready by the mid-2030s. The move aims to counter North Korean threats and reduce dependence on the United States. This development could reshape security in Asia and escalate an underwater arms race, with potential responses from China and Japan.

South Korean submarine construction dock, massive hull section being lifted by overhead crane, nuclear propulsion system visible through open compartment, welders in protective gear working on pressure vessel, engineers monitoring holographic blueprints, glowing reactor core mockup nearby, dramatic industrial lighting, sparks from welding, photorealistic naval engineering visualization, metallic reflections, safety barriers, technical equipment scattered, action during assembly process, demonstrating advanced submarine technology, cinematic wide shot

Technical development of the South Korean nuclear submarine 🛠️

The project, led by the Defense Development Agency, is based on a 4,000-ton design with a light water reactor. It is expected to integrate ballistic missile systems and advanced torpedoes. South Korea seeks full autonomy in nuclear propulsion, although it still requires fission technology from foreign partners. The timeline points to initial tests in 2028 and operational deployment in 2035.

The little boat that will make Kim Jong-un happy 😏

Because nothing says regional peace like a nuclear submarine with missiles. Surely the northern neighbor will applaud: now he can compete in the category of who has the noisiest toy under the sea. Meanwhile, China and Japan are already requesting budgets for their own versions. At least the reactor's electricity bill will be paid by the South Korean taxpayer.