Mk 46 is also the designation of the Mk 46 Mod 0 variant of the M249 light machine gun
Mark 46 torpedo
A Mk 46 exercise torpedo launched from USS Moosbrugger.
Type
Lightweight anti-submarine torpedo[1]
Place of origin
United States
Service history
In service
• Mod 0: 1963[1] • Mod 5: 1979
Used by
See operators
Production history
Designer
Naval Ordnance Test Station Pasadena[1] Aerojet[1] Alliant Techsystems
Designed
1960[1]
Manufacturer
Aerojet[1] Naval Ordnance Station Forest Park Honeywell Raytheon[2]
Variants
Mod 0[1] Mod 1 Mod 2 Mod 5 Mod 5A Mod 5A(S) Mod 5A(SW)[2]
Specifications
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
Operational range
12,000 yd (11,000 m)
Maximum depth
>1,200 ft (370 m)
Maximum speed
>40 kn (74 km/h; 46 mph)
Guidance system
Active or passive/active acoustic homing
Launch platform
Mark 32 Surface Vessel Torpedo Tubes, ASW Aircraft, RUM-139 VL-ASROC
A Mark 46 Mod 5A torpedo is inspected aboard the guided missile destroyer USS Mustin.A French Lynx. helicopter carrying a Mk 46 torpedo.A P-8A Poseidon of VP-16 dropping a 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.[3]
^ abcdefgJolie, E.W. (15 September 1978). "A Brief History of US Navy Torpedo Development: Torpedo Mk46". Retrieved 24 June 2013.
^ ab"The US Navy Fact File: Mark 46 Torpedo". 27 November 2012. Archived from the original on 20 March 2019. Retrieved 9 August 2018.
^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.
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