Developed by the Naval Ordnance Test Station, Pasadena, Calif., and Aerojet General, Azusa, Calif., the Mk 46 torpedo is a third-generation, lightweight ASW weapon. It is powered by a thermal piston engine and is capable of higher speed, longer range, better acoustic performance, and deeper depth operation than its predecessors. (Torpedo Mk 46 Mod 0 uses a solid propellant grain while the Mod 1 uses liquid monopropellant fuel. The Mod 1 performance in speed and range is better.) Torpedo Mk 46 production began at Aerojet General in 1963 and in the next two years production commenced at the Naval Ordnance Plant, Forest Park, Ill., and at Minneapolis Honeywell Inc., Hopkins, Minn. The Mk 46 torpedo is currently in service on U.S. Navy destroyers and aircraft and has been purchased by foreign governments under the Military Assistance Program. The torpedo will continue in service until replaced by a new generation lightweight ASW torpedo.
DEVELOPMENT DATE:
1960
APPROXIMATE IN-SERVICE DATES:
1963 TO PRESENT

Torpedo: Approx length 109", Approx width 15", Approx weight 838lbs.

Torpedo shell: Approx length 114", Approx width 20", Approx height 20".

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