KRI Cakra class (Type 209/1300) coastal submarines
KRI Cakra (401) is the first ship in the Cakra class submarine . This ship is the second ship to bear the name Cakra in the ranks of the Indonesian Navy. The first ship was the KRI Tjakra (old spelling), one of the 12 Russian-built Tjakra-class submarines (Whiskey-class submarines) which was scrapped in the 70s. KRI Cakra was built by Howaldtswerke , Kiel, Germany in 1981. It is a submarine type 209/1300 that is used by the Navy worldwide. Has the motto Persevere to the End . KRI Cakra is included in the Indonesian Navy's battering fleet . Another ship in the Cakra class is KRI Nanggala (402). The two submarines were formed in West Germany, ordered in 1977 and in 1981, began serving together with KRI Nanggala (402).
Indonesia's submarines are named after the weapons of the puppet characters. KRI Cakra takes its name from wayang weapons.
In 1987, the KRI Cakra crew was already in Germany to bring the submarine back to Indonesia. The process of repatriating the KRI Cakra is not like other countries' submarines which are transported by large ships, but the KRI Cakra will sail from Germany directly to Indonesia. The voyage was planned from 16 June 1987 to 13 August 1987. Then sailed the KRI Cakra together with his crew from Germany to Indonesia.
As a mid-range submarine with a conventional (non-nuclear) propulsion system, the Type 209/1300 is powered by a low-speed Siemens electric motor whose power is channeled directly through a shaft to the ship's propeller at the stern. This means that this power does not use other additional mechanism gears. The total power that can be generated is 5 000 shaft horse power, while the presence of electric batteries makes him able to store electric power, which power is supplied by four MTU supercharged diesel engine generators.
The electric batteries take up about 25 percent of the submarine's total weight which is 1,395 tonnes (hence the name Type 209/1300 as there are also Type 209/1200 and Type 209/1400). In dimensions, the overall length of the Type 209/1300 is 59.5 meters, an outer diameter of 6.3 meters and an inner diameter of 5.5 meters.
If diving, the maximum vessel speed is 21.5 knots with a crew based on the manufacturer's basic specifications of 34 sailors. The KRI Nanggala-402 situational vigilance relies on the sonar CSU-3-2 suite. "One ping" is a submarine commander's utterance that is often used to activate sonar to detect the presence of enemy submarines in Hollywood films about submarines, including The Hunt For Red October.
Fourteen 21-inch / 533mm torpedoes in eight tubes are the mainstay of its weapons system, which in 2021 will be tested for its peak training in the waters north of Bali Island. From that narrow torpedo tube it could also be a vehicle for launching frogmen for infiltration missions behind enemy lines, a very high-risk mode of action.
During the Old Order government, Indonesia had quite a number of respected submarines, namely 12 units of the Whiskey class made in the Soviet Union which operated from 1959 to 1962. They were also deployed in Operation Trikora which led to the return of West Irian to Indonesia. Until the early 90s, the TNI-AL was still quite proud of its combat arsenal, one indicator that until that time Indonesia was the only country in Southeast Asia that had a submarine fleet. The dominance of the Indonesian submarine fleet in the Southeast Asia region has started since the era of the 60s, at which time the Indonesian Navy operated 12 units of Russian-made Whiskey class submarines.
But it is different now, Indonesia's dominance in the submarine fleet has collapsed, because Singapore and Malaysia now have a submarine fleet in a much larger number than that of the Indonesian Navy. Singapore, this super small country, already has 4 units of Swedish-made Sjoormen class submarines, while Malaysia now also has 2 units of French-made Scorpene class submarines.
The submarine is one of the military arsenal of a country whose presence is very calculated in the region. The basic character that dives in depth and is very difficult to detect its location and the secrecy of the weapon system and the mission that is being carried out, makes everything completely secret. As if to thicken secrecy, the daily uniform of the TNI AL submarine escort is also black with a black beret.
The depths of the dark and lonely sea have become their field of work in military operations. There is no horizon and a refreshing gust of wind they can enjoy but the air from the conditioning machines they breathe all day long. The space in which they live and work for combat and war operations is also very narrow and many things that are normally done in a normal environment are prohibited from being done in the hull of a submarine.
Apart from certain qualifications, the psychological quality of the personnel of the Indonesian Navy's submarines really determines their ability to be able to carry a Shark brevet in the Navy Fleet Submarine Unit with the motto of Tabah Until the End. They must be able to be in very confined and high-pressure situations in a closed environment for weeks under water.
The KRI Nanggala-402 was made at the Howaldt Deutsche Werke shipyard in Kiel, Germany (West), in 1981 after the effective contract was signed in 1977. KRI Nanggala-402 has a "twin brother", KRI Cakra-401, which is both of the Type 209/1300, a German HDW-made submarine that has a large population worldwide and is made under license and developed in several countries, including by Daewoo Shipbuilding and Marine Engineering in South Korea which is the Changbo-Go class. KRI Nanggala-402 together with KRI Cakra-401 are the most senior submarines in the Indonesian Navy with a long record of assignment.
Among the participants, in 2002, KRI Nanggala-402 was involved in a joint training exercise between the Indonesian Navy and the United States Navy, CARAT-8/02 on 27 May-3 June 2002, in the waters of the Java Sea, Bali Strait, and Situbondo. In 2004 he was involved in the XV / 04 Joint Marine Operations Exercise in the Indian Ocean from April 8 to May 2, 2004. That's where the KRI Nanggala-402 with its SUT torpedo sunk the former KRI Rakata, a 1942-built ocean tug.
The Indonesian Navy submarine, KRI Cakra (401), is currently undergoing a USD 40 million upgrade as part of an effort to extend the life of the submarine to 2024. The submarine is one of two German-made vessels commissioned by the TNI-AL in the early 1980s. The contract for the upgrade of the two ships has been awarded to South Korean shipbuilder Daewoo Shipbuilding and Marine Engineering (DSME), and work on Cakra has been underway at the PT PAL facility in Surabaya since mid-2018.
Throughout the history of the TNI and TNI AL, incidents related to the submarines of the Indonesian Navy are among the least disclosed to the public, except for ceremonial matters and fundamental innovations. The KRI Nanggala-402 submarine stopped responding in the early morning 20 April 2021. Indonesian National Armed Forces (TNI) Commander Marshal Hadi Tjahjanto told national paper Kompas that the submarine disappeared in waters about 60 miles (95 kilometers) north of the island of Bali. "Just when the dive permit was given, after being given the clearance, contact was immediately lost," he told the paper. It is one of five submarines owned by the Indonesian armed forces and was built in West Germany in 1978.
Good news came from the submarine KRI Nanggala 402 belonging to the Indonesian Navy, which was declared missing early this morning, Wednesday, April 21, 2021. The latest news is that contact has emerged from the German-made combat submarine. Quoted by VIVA Military from a Twitter account called Jurnal Maritim , it was stated that contact with KRI Nanggala 402 could be made. However, one of the main tools of the TNI's weapons system (alutsista) is still unable to return to the surface. Furthermore, the report said, through active sonar it was known that there was movement under the sea around the oil spill. The submarine KRI Nanggala 402 is predicted to have problems with the electric pump (electric propulsion engine) and the battery.
|Displacement||1,395 tons submerged|
|Dimensions||59.5 x 6.3 x 5.5 meters/195.2 x 20.6 x 18 feet|
|Propulsion||Diesel-electric, 4 diesels, 1 shaft, 4,600 shp, 21.5 knots|
|Armament||8 21 inch torpedo tubes (14 torpedoes)|
|Concept/Program||German-built submarines; both refitted at builders late 1980's.|
|Builders||Howaldtswereke, Kiel, Germany.|
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