South Korea's KSS-III Batch-II Submarine Boosts Regional Deterrence
On October 22, 2025, South Korea launched the ROKS Jang Yeong-sil, the first of its advanced KSS-III Batch-II submarines, at the Hanwha Ocean shipyard. This 3,600-ton diesel-electric submarine features cutting-edge lithium-ion batteries, a ten-cell vertical launch system, and improved sonar, enhancing its operational capabilities against regional threats, particularly from North Korea. Scheduled for commissioning in 2027, the Jang Yeong-sil signifies a major advancement in South Korea’s naval technology and its aim to maintain maritime superiority. …
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