History | |
---|---|
Bangladesh | |
Name | BNS Joyjatra |
Builder | Wuchang Shipyard |
Acquired | 14 November 2016 |
Commissioned | 12 March 2017 |
Identification | Pennant number: S 162 |
Status | In active service |
General characteristics | |
Class and type | Type 035G submarine (modernized) |
Displacement | 2,110 tones (submerged) |
Length | 76 m (249 ft) |
Beam | 7.6 m (25 ft) |
Draft | 5.1 m (17 ft) |
Depth | 7.6 m (25 ft) |
Propulsion | Type E390ZC-1 diesel engine, 5,200 hp |
Speed |
|
Test depth | 300 m (980 ft) |
Complement | 57 (10 officers) |
Sensors and processing systems |
|
Electronic warfare & decoys | Type 921A EW Suite |
Armament |
|
BNS Joyjatra is a Type 035G (Ming class) diesel electric submarine of the Bangladesh Navy. She is one of the first two submarines of the Bangladesh Navy.
Joyjatra uses Chinese H/SQ2-262C active sonar (improved Pike Jaw MG-100 sonar), a Chinese copy of the French DUUX-5 passive sonar, integrated by an ES5F integrated sonar system. The boat uses MRK-50 Topol (Snoop Tray) surface search radar, a Magnavox satellite navigation system for communications, with a Type 921A electronics warfare suite.
Joyjatra has eight 533 mm (21 in) torpedo tubes which can launch a complement of 14 heavy weight ET-31 anti-ship torpedoes and ET-40 anti-submarine torpedoes. ET-31 has a range of 15 kilometers with speed of 40 knots. ET-31 use active/passive acoustic homing guidance. ET-40 torpedo has two modes which can be launched from Model 7436 triple tube torpedo launching system. [1] ET-40 has 30 kilometers range with speed of 25 knots or 18 kilometers range with speed of 42 knots. ET-40 use wire guidance (fire-and-forget) [1] and active acoustic homing for ASW role. ET-40 also can used against surface ship while first stage is straight run (unguided) till passive acoustic homing mode (600m acquisition range) or wake homing guidance activated. Alternatively, the boat can carry up to 32 naval mines. [2]
The ship was launched in 1989, serving the People's Liberation Army Navy Submarine Force from 1990 with pennant number 357. Before joining the Bangladesh Navy, the boat went through upgrade and refitting, extending its life to 2030. The upgrade included the installation of new sensors, modern computers and communication systems. Interior decoration and crew comfort also improved.
The ship was handed over to the Bangladesh Navy on 14 November 2016. [3] [4] She reached Chattogram port, Bangladesh on 22 December 2016. [5] She was commissioned into the Bangladesh Navy on 12 March 2017. [6] [7]
A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, and with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, such a device was called an automotive, automobile, locomotive, or fish torpedo; colloquially a fish. The term torpedo originally applied to a variety of devices, most of which would today be called mines. From about 1900, torpedo has been used strictly to designate a self-propelled underwater explosive device.
The Mark 24 Tigerfish was a heavyweight acoustic homing torpedo used by the Royal Navy (RN) during the 1980s and 90s. Conceptual development dates to the mid-1950s, and formally started in 1959 with a target introduction date in 1969. A lengthy development process led to a greatly reduced performance requirement, including the removal of anti-surface capabilities. The first prototype "Tiger Fish" examples were delivered in 1967.
The Mark 46 torpedo is the backbone of the United States Navy's lightweight anti-submarine warfare torpedo inventory and is the NATO standard. These aerial torpedoes are designed to attack high-performance submarines. In 1989, an improvement program for the Mod 5 to the Mod 5A and Mod 5A(S) increased its shallow-water performance. The Mark 46 was initially developed as Research Torpedo Concept I, one of several weapons recommended for implementation by Project Nobska, a 1956 summer study on submarine warfare.
Type 53 is the common name for a family of 53 cm torpedoes manufactured in Russia, starting with the 53-27 torpedo and continuing to the modern UGST (Fizik-1), which is being replaced by the Futlyar.
USS Bluefish (SSN-675), a Sturgeon-class attack submarine, was the second ship of the United States Navy to be named for the bluefish.
The Sting Ray is a British acoustic homing lightweight torpedo (LWT) manufactured by GEC-Marconi, who were later bought out by BAE Systems. It entered service in 1983.
An acoustic torpedo is a torpedo that aims itself by listening for characteristic sounds of its target or by searching for it using sonar. Acoustic torpedoes are usually designed for medium-range use, and often fired from a submarine.
The Mark 24 mine is an air-dropped anti-submarine warfare weapon (ASW) incorporating passive acoustic homing system and torpedo integration. It was used by the United States, the British and Canadian forces during the Second World War and entered service in March 1943 and remained in use with the US Navy until 1948. Approximately 4,000 torpedoes were produced, with 340 ultimately being deployed during the war. Two-hundred and four torpedoes were launched against submarine targets, with 37 Axis submarines being sunk and a further 18 damaged. The deceptive name of "Mark 24 mine" was deliberately chosen for security purposes, to conceal the true nature of the weapon.
Anti-submarine warfare is a branch of underwater warfare that uses surface warships, aircraft, submarines, or other platforms, to find, track, and deter, damage, or destroy enemy submarines. Such operations are typically carried out to protect friendly shipping and coastal facilities from submarine attacks and to overcome blockades.
The Mark 37 torpedo is a torpedo with electrical propulsion, developed for the US Navy after World War II. It entered service with the US Navy in the early 1950s, with over 3,300 produced. It was phased out of service key with the US Navy during the 1970s, and the stockpiles were sold to foreign navies.
The Type 039 submarine is a class of diesel-electric submarines of the People's Liberation Army Navy. The class is the first diesel-electric submarine to be fully developed within China and also the first Chinese diesel-electric submarine to use the teardrop hull shape.
Yu-2 torpedo was a Chinese development of the unguided straight-running Soviet ASuW RAT-52 torpedo with passive acoustic homing capability added. The historical background of Yu–2 is identical to that of Yu-1 torpedo and Yu-4 torpedo. Contrary to the higher number assigned, Yu-2 torpedo was the first Chinese domestically produced torpedo entering service, ahead of the Yu-1 torpedo.
Yu-4 (鱼-4) torpedo is the Chinese development of the Russian SAET-50 ASuW passive acoustic homing torpedo, and it is the Russian SAET-50 torpedo incorporating active acoustic homing guidance. Yu-4 torpedo is often erroneously claimed by many sources as the Chinese version of the SAET-60 acoustic homing torpedo, but Soviets had not completed the development of SAET-60 and only fielded the weapon in 1961, by then the relationship between former-Soviet Union and China had already worsened and China had not received any technical assistance on SAET-60 torpedo. The background of the development of Yu-4 torpedo is identical to that of Yu-1 torpedo and Yu-2 torpedo.
Yu-5 (鱼-5) torpedo is the first wire-guided torpedo developed by China. It is an ASW torpedo designed for conventional diesel-electric submarines. It is often erroneously referred as the Chinese copy of Soviet TEST-71 torpedo, which is incorrect as the Soviet torpedo was developed in 1971 and its successor TEST-71MKE was developed in 1977, at the worst time of Sino-Soviet split. With Yu-5 entering Chinese service in 1989, it was simply impossible to acquire any technologies of Soviet TEST-71 torpedo, which was not purchased by China until 1993, four years after the Yu-5 torpedo had already entered service. The Yu-5 is not a product of indigenous development and is based largely upon previous Soviet and American designs, with much of the propulsion system being derived from the American Mark 46 lightweight torpedo.
The Durjoy class is a class of large patrol craft of the Bangladesh Navy. A total of four are serving the Bangladesh Navy as of 2021.
The Type 035 submarine is a class of diesel-electric submarines of the People's Liberation Army Navy. The Type 035 is a heavily improved redesign of the older Type 033 submarines, which were built in China from 1962 to 1984.
BNS Nabajatra is a Type 035G diesel electric submarine of the Bangladesh Navy. She is one of the first two submarines of the Bangladesh Navy.
BNS Durgam is a Durjoy-class semi-stealth large patrol craft (LPC) of the Bangladesh Navy. She has been serving in the Bangladesh Navy since 2017.
BNS Nishan is a Durjoy-class semi-stealth large patrol craft of the Bangladesh Navy. She has been serving the Bangladesh Navy since 2017.
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