The Indonesian Navy received the first locally-assembled Nagapasa-class submarine KRI Alugoro (405) from state-owned shipbuilder PT PAL in a ceremony on March 17.
The submarine was delivered a little over a year after starting trials in January 2020. It is worth noting that the boat had initially been scheduled for delivery to the navy by 2019.
Indonesia plans to buy six submarines in the class under a transfer of technology agreement with South Korea’s Daewoo Shipbuilding and Marine Engineering (DSME). This agreement saw DSME deliver the first two units, KRI Nagapasa and KRI Ardadedali, in 2017 and 2018. The other submarines are to be delivered by PT PAL.
DSME also prefabricated blocks of KRI Nagapasa before shipping them to Indonesia for assembly.
Nagapasa-class boats are based on South Korea’s Chang Bogo boats, which are themselves based on the German Type 209 diesel-electric attack submarine design. They measure 61 meters in length and displace 1,400 tons. Indonesian boats feature eight tubes for Black Shark torpedoes, Safran’s navigation systems and Zoka acoustic torpedo countermeasures developed by Turkey’s Aselsan.
Nagapasa-class will succeed their two Cakra-class predecessors which have been in service since 1981 and are approaching the end of their service life.