Mark 46 torpedo
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 (RETORC I), one of several weapons recommended for implementation by Project Nobska, a 1956 summer study on submarine warfare.
|Mark 46 torpedo|
A Mk 46 exercise torpedo launched from USS Mustin.
|Type||Lightweight antisubmarine torpedo|
|Place of origin||United States|
|In service||• Mod 0: 1963|
• Mod 5: 1979
|Used by||See operators|
|Designer||Naval Ordnance Test Station Pasadena|
Naval Ordnance Station Forest Park
|Mass||508 lb (230 kg)|
|Length||8 ft 6 in (2.59 m)|
|Diameter||12.75 in (323.8 mm)|
|Warhead||PBXN-103 high explosive (bulk charge)|
|Warhead weight||96.8 lb (43.9 kg)|
|Engine||Two-speed, reciprocating external combustion|
|Propellant||Otto fuel II|
|12,000 yd (10,973 m)|
|Maximum depth||>1,200 ft (366 m)|
|Speed||>40 kn (74 km/h; 46 mph)|
|Active or passive/active acoustic homing|
|Mark 32 Surface Vessel Torpedo Tubes, ASW Aircraft, RUM-139 VL-ASROC|
- Mark 46, Mod 5
- Primary Function: Air and ship-launched lightweight torpedo
- Contractor: Alliant Techsystems
- Power Plant: Two-speed, reciprocating external combustion; Mono-propellant (Otto fuel II)
- Length: 8 ft 6 in (2.59 m) tube launch configuration (from ship), 14 ft 9 in (4.50 m) with ASROC rocket booster
- Weight: 508 lb (230 kg) (warshot configuration)
- Diameter: 12.75 in (323.8 mm)
- Range: 12,000 yd (10,973 m)
- Depth: > 1,200 ft (366 m)
- Speed: > 40 kn (46 mph; 74 km/h)
- Guidance System: Homing mode: Active or passive/active acoustic homing
- Launch/search mode: Snake or circle search
- Warhead: 96.8 lb (43.9 kg) of PBXN-103 high explosive (bulk charge)
- Date Deployed: 1967 (Mod 0); 1979 (Mod 5)
The Chinese Yu-7 torpedo is said to be based on the Mk 46 Mod 2. The Chinese Navy used the Yu-7 ASW torpedo, deployed primarily on ships and ASW helicopters, but it started to be replaced by the Yu-11 in 2012.
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- Jolie, E.W. (15 September 1978). "A Brief History of US Navy Torpedo Development: Torpedo Mk46". Retrieved 24 June 2013.
- Friedman, Norman (1994). U.S. Submarines Since 1945: An Illustrated Design History. Annapolis, Maryland: Naval Institute Press. pp. 109–114. ISBN 1-55750-260-9.
- Thomas, Vincent C. The Almanac of Seapower 1987 Navy League of the United States (1987) ISBN 0-9610724-8-2 pp.190-191
- Polmar, Norman "The Ships and Aircraft of the U.S. Fleet: Torpedoes" United States Naval Institute Proceedings November 1978 p.160
- (Chinese language) Archived 2006-11-02 at the Wayback Machine
- "Undersea dragon: Chinese ASW capabilities advance" (PDF). Jane's. 2017. Retrieved 23 July 2019.
- "Mk 46 torpedo - Weaponsystems.net". www.weaponsystems.net.