Nagapasa-class submarine

The Nagapasa class is a group of diesel-electric attack submarines built for the Indonesian Navy by the South Korean yard Daewoo Shipbuilding and Marine Engineering, now Hanwha Ocean, together with the Indonesian shipbuilder PT PAL. It is an upgraded variant of the South Korean Jang Bogo class, itself a version of the German Type 209 design, and is also called the Improved Chang Bogo class. A contract signed in December 2011 covered three boats, with construction beginning in January 2012. KRI Nagapasa was commissioned in 2017 and KRI Ardadedali in 2018, and KRI Alugoro followed in 2021. A second batch of three boats was contracted in 2019 but remained at an early stage of development. The boats are named for weapons of heroes in the Ramayana and the Mahabharata.