Nagapasa-class submarine

KRI Nagapasa (403)
Class overview
NameNagapasa class
Builders
Operators Indonesian Navy
Preceded byCakra class
Cost
  • $373M[3] per vessel (Batch-1 Nagapasa-class, 2011 April)
  • $340M[4] per vessel (Batch-2 Nagapasa-class, 2019 December)
In commission2017–present
Planned6[5]
On order3
Completed3
Active3
General characteristics
TypeAttack submarine
Displacement1,400 tons (surfaced)
Length61.3 m (201 ft 1 in)
Beam6.3 m (20 ft 8 in)
Draft5.5 m (18 ft 1 in)
Propulsion
  • 4 x MTU 12V493 diesel generators
  • 3,700 kW (5,000 shp)
Speed
  • 11 knots (20 km/h; 13 mph) surfaced
  • 21.5 knots (39.8 km/h; 24.7 mph) submerged
Range
  • 11,000 nmi (20,000 km; 13,000 mi) at 10 kn (19 km/h; 12 mph) surfaced,
  • 8,000 nmi (15,000 km; 9,200 mi) at 10 kn (19 km/h; 12 mph) snorkeling,
  • 400 nmi (740 km; 460 mi) at 4 kn (7.4 km/h; 4.6 mph), submerged
Endurance50 days
Test depth500 m (1,600 ft)
Complementmore than 40[6]
Sensors and
processing systems
  • Kongsberg MSI-90U Mk 2 combat management system
  • Atlas Elektronik CSU-90 active and passive sonar
  • ELAC KaleidoScope sonar suite 
  • Flank sonar arrays
  • Pegasso RESM system
  • Aries radar
  • ECPINS-W integrating navigation and tactical systems 
  • L3's MAPPS integrated platform management system
  • Safran's Sigma 40XP inertial navigation systems
  • Hensoldt SERO 400 & OMS 100 periscope
  • ZOKA acoustic torpedo countermeasures 
Armament

The Nagapasa class is an upgraded variant of the Jang Bogo class, also known as Improved Chang Bogo. The vessels were built by the South Korean Daewoo Shipbuilding & Marine Engineering (DSME) and the Indonesian PT PAL. As of 2021, six ships have been planned, which were divided into two batches. Batch 1 consists of three ships and all are already commissioned. Batch 2 also consists of three ships that are in the early development stage.[7] The class is named for weapon of Indrajit, Nagapash (Sanskrit: नागपाश, romanized: nāgapāśa, lit. 'serpent rope').

  1. ^ Wertheim, Eric (2007). Naval Institute Guide to Combat Fleets of the World: Their Ships, Aircraft, and Systems (Naval Institute Guide to Combat Fleets of the World). US Naval Institute Press. p. 1067. ISBN 978-1-59114-955-2.
  2. ^ Franz-Stefan Gady (2016-03-29). "South Korea Launches First Indonesian Stealth Submarine". The Diplomat. Archived from the original on 2017-05-02.
  3. ^ Cite error: The named reference KT was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference NagapasaBatchII was invoked but never defined (see the help page).
  5. ^ Rahwat, Ridzwan (12 April 2019). "Indonesia signs USD1 billion contract for three follow-on SSKs to Nagapasa class". Jane's 360. Retrieved 7 February 2020.
  6. ^ Vavasseur, Xavier (August 9, 2019). "First Indonesian-Built Submarine to Soon Reinforce TNI AL Fleet". Naval News.
  7. ^ Gady, Franz-Stefan (15 April 2019). "Indonesia, South Korea Ink $1 Billion Contract for 3 Diesel-Electric Submarines". The Diplomat. Retrieved 7 February 2020.