Dosan Ahn Chang-ho-class Submarine

The KSS-III Batch-I, officially called Dosan Ahn Changho class is a series of diesel-electric attack and ballistic missile submarines currently being built for the Republic of Korea Navy (ROKN), jointly by Hanwha Ocean and HD Hyundai Heavy Industries (HHI). The KSS-III is the final phase of the Korean Attack Submarine program, a three-phased program to build 27 attack submarines for the ROKN, between 1994–2029. The KSS-III initiative consists of the development of nine diesel-electric attack submarines, capable of firing submarine-launched ballistic missiles (SLBM), to be built in three batches, between 2014–2029. A total of three submarines of the first batch of the series have been launched, with the first submarine, ROKS Dosan Ahn Changho, being commissioned on 13 August 2019. The second ship, ROKS Ahn Mu, was commissioned on 20 April 2023.