The South Korean Navy and the Defense Acquisition Program Administration (DAPA) have announced the launch of the second KSS-III Batch-II diesel-electric submarine, ROKS Seo Hui (SS-088)…
The 3,600-ton submarine is equipped with 70 systems and components developed by South Korea, including a South Korean-developed lithium-ion battery system.
ROKS Seo Hui (SS-088) is scheduled to be delivered to the South Korean Navy in 2028.
Following the launch of ROKS Jang Yeong-sil in 2025, Seo Hui becomes the second submarine of the KSS-III Batch-II class. The program’s first batch consisted of three 3,000-ton Batch-I submarines.
ROKS Seo Hui has a displacement of approximately 3,600 tons, a length of 89 meters and a diesel-electric propulsion system.
The KSS-III Batch-II submarine is equipped with 10 cells of the Korean Vertical Launch System (K-VLS).
The system enables the submarine to launch submarine-launched ballistic missiles and land-attack cruise missiles…