KRI Nanggala (402), also known as Nanggala II, is the second submarine in the Cakra Type 209/1300 class of submarines. KRI Nanggala is under the control of the Indonesian Fleet Command Submarine Unit for the Eastern Region. This ship is included in the Navy battalion fleet and is the second ship to bear the name Nanggala in the ranks of the Indonesian Navy.

accident

KRI Nanggala (402) lost contact on Wednesday, April 21, 2021 while conducting a torpedo shooting exercise in the Bali Sea with its 53 crew.[6] KRI Nanggala was later declared sunk on Saturday, April 24, 2021 by the Indonesian Navy after the discovery of debris thought to have come from the submarine.[7]

               General Features

Long
59.5 meters
Wide
6.3 meters
Reach
8,200 nmi (15,200 km; 9,400 mi) at 8 kn (15 km/h; 9.2 mph)
Immersion weight
1,285 tons on the surface
1,390 tons while diving
Speed
11 knots (20 km/h; 13 mph) on the surface[2]
215 knots (398 km/h; 247 mph) while diving
pusher
4 x MTU 12V493 AZ80 GA31L diesel engine 2,400 hp[2]
4 x 1.7 MW . powered Siemens alternators
1 x Siemens motor with 4,600 hp
1 x shaft

           history 

KRI Nanggala was ordered by the government of the Republic of Indonesia on April 2, 1977. At that time, Indonesia applied for a loan of 625 million US dollars from Germany. 100 million US dollars from the loan was used to build KRI Nanggala and KRI Cakra.[11] It was designed by Ingenieurkontor in the city of Lübeck, built by Howaldtswerke in Kiel, and sold by the company Ferrostaal in Essen.[2]

The ship was commissioned in March 1978 and launched on September 10, 1980.[2][12] The submarine then underwent trials in the seas of West Germany before being handed over to the Indonesian Government on 6 July 1981.[12][13] KRI Nanggala left West Germany in early August 1981 with 38 crew under the command of Lieutenant Colonel Armand Aksyah.[14] On October 5, 1981, KRI Nanggala was first shown to the general public, in conjunction with the 36th anniversary of the TNI.[15] The inauguration of its use was carried out by the Minister of Defense and Security / Commander of the Armed Forces General Mohammad Jusuf on October 21, 1981 at the Ujung Surabaya Pier.[16]

KRI Nanggala had made repairs at Howaldtswerke and was completed in 1989.[17] About two decades later, the submarine underwent another full repair at a cost of US$63.7 million over two years in South Korea.[18] The repair was carried out by Daewoo Shipbuilding & Marine Engineering (DSME) and was completed in January 2012.[a][20][21] In this repair, part of the ship's superstructure was replaced and the weapons, sonar, radar, combat control and propulsion systems were updated. .[22] After repairs, KRI Nanggala is capable of firing four torpedoes simultaneously at four different targets and launching anti-ship missiles such as Exocet or Harpoon. In addition, the dive depth was increased to 257 meters (843 ft) and the maximum speed was increased from 215 knots (398 km/h) to 25 knots (46 km/h).[21] About five years later, KRI Nanggala was equipped with ASELSAN's KULAÇ echo housing system.[23]

Control
Throttle to turn and forward, backward

Vtol for up and down