Seoul: South Korea has launched its first 3,600-ton-class naval submarine, marking a significant step in enhancing its underwater deterrence against threats from North Korea. The unveiling ceremony of the Changbogo-III Batch-II class submarine took place at Hanwha Ocean Co.'s dockyard in Geoje, approximately 330 kilometers southeast of Seoul.
According to Yonhap News Agency, the submarine, named ROKS Jang Yeong-sil after a renowned engineer from the Joseon Dynasty, is the first of three such submarines under construction. This 89-meter-long vessel is part of South Korea's strategic initiative to acquire advanced diesel-electric attack submarines under the Changbogo-III or KSS-III program.
Officials from the Navy and the Defense Acquisition Program Administration (DAPA) described the ROKS Jang Yeong-sil as a world-class diesel submarine that significantly enhances the country's naval capabilities. Compared to its predecessor, the 3,000-ton Batch-I class submarine, the new model boasts upgraded detection and strike capabilities, allowing it to remain stealthy for extended periods.
The submarine features an enhanced combat system and sonar system, improving information processing and target detection. Additionally, its lithium-ion batteries enable longer underwater endurance and increased speed. Sound absorption technologies and more homegrown equipment have been integrated to ensure stable operation and increased stealth.
The 3,600-ton submarine is expected to feature additional vertical launch tubes for submarine-launched ballistic missiles, exceeding the six tubes equipped in the previously commissioned 3,000-ton Batch-I submarines. The submarine is anticipated to play a crucial role in South Korea's maritime three-axis deterrence system, which includes the Kill Chain preemptive strike platform targeting North Korean nuclear and missile threats.
Scheduled for delivery to the Navy by the end of 2027, the new submarine is part of South Korea's broader defense strategy. The country aims to become the world's fourth-largest defense exporter, capitalizing on the demand for its homegrown weapons systems, including howitzers, tanks, and fighter jets.
Lee Sang-woo, director-general of DAPA's KSS program group, expressed optimism, noting that the ROKS Jang Yeong-sil will enhance the strategic value of South Korean submarines globally while boosting defense exports. In support of this goal, Hanwha Ocean was recently selected as a preferred bidder for Canada's major submarine contract under the Canadian Patrol Submarine Project, which plans to acquire up to 12 new submarines by 2035.
Canadian Prime Minister Mark Carney, who will attend the Asia-Pacific Economic Cooperation summit in Gyeongju, plans to visit Hanwha Ocean's facilities, further highlighting the growing international interest in South Korea's advancing defense capabilities.