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UGM-89A Perseus
Type Standoff Anti-Submarine & Anti-ship
Place of origin United States
Service history
Used by United States Navy
Production history
Manufacturer Lockheed Missiles and Space Company[1]
Produced Cancelled[2][3][4][5]
Weight 6000 lb (2700 kg)[2][5]
Length 25 ft (7.6 m)[2][5]
Diameter 30 in (762 mm)[2][5]

Warhead Homing torpedo[2][5]

Engine Solid propellant rocket motor[2][5]
30 nm (55 km) max.[2][5]

UGM-89 Perseus was a proposed U.S. Navy submarine-launched anti-ship and anti-submarine (ASW) cruise missile that was developed under the Submarine Tactical Missile (STAM) project, which was also referred to as the Submarine Anti-ship Weapon System (STAWS). This missile system was to be the centerpiece for a proposed third-generation nuclear-powered cruise missile submarine championed by then-Vice Admiral Hyman G. Rickover, the influential but controversial head of the Navy's nuclear propulsion program.[4][6]



The Navy issued the STAM requirement in March 1969, and the Lockheed Missiles and Space Company (LMSC) responded to this proposal, which included the formation of an undersea warfare program organization in Sunnyvale, California.[1][2][5] It is unclear if this was to be an entirely new organization or part of the Lockheed Underwater Missile Facility (LUMF) which had been responsible for the design and development of the Polaris, Poseidon, and Trident submarine-launched strategic ballistic missile (SLBM) systems for the U.S. Navy.[7] In February 1970, the missile designation ZUGM-89A Perseus was reserved for the U.S. Navy presumably for the STAM/STAWS missile development program.[5][8]

Design features

Because of its large size, the UGM-89 Perseus missile could not be launched from the Navy's standard 21-inch (533 mm) submarine torpedo tubes, but would be carried in a vertical launch system (VLS) housed within the proposed cruise missile submarine's hull. Twenty VLS tubes would be located in a separate compartment situated between the submarine's operations and reactor compartments.[3][4] The missile warhead payload would be a new 21-inch (533 mm) diameter homing torpedo to be developed concurrently with the UGM-89 Perseus missile.[2][5]


The UGM-89 Perseus missile system was cancelled in 1973, and its proposed nuclear-powered cruise missile submarine platform was also cancelled in 1974, with the Navy deciding to build the less expensive Los Angeles-class nuclear-powered attack submarines, which would subsequently carry both the Harpoon and Tomahawk cruise missiles.[2][3][4][5] The AWS component of the UGM-89 Perseus would later serve as the baseline for the Sea Lance stand-off ASW missile system.[9]

See also


  1. ^ a b Flight International (29 May 1969) p. 911
  2. ^ a b c d e f g h i j k UGM-89 Perseus - Directory of US Military Rockets and Missiles
  3. ^ a b c d Polmar and Moore. Cold War Submarines, p. 274-275
  4. ^ a b c d e Friedman. U.S. Submarines Since 1945, p. 270-271
  5. ^ a b c d e f g h i j k l UGM-89 Perseus - Encyclopedia Astronautica
  6. ^ Polmar and Moore. Cold War Submarines, p. 274-275, 376n40
  7. ^ Francillon. Lockheed Aircraft since 1913, Appendix D, p. 558-564
  8. ^ Missile Design Series -
  9. ^ Friedman. U.S. Submarines Since 1945, p. 272


  • Polmar, Norman; J.K. Moore (2004). Cold War Submarines: The Design and Construction of U.S. and Soviet Submarines. Washington, DC: Potomac Books, Inc.. ISBN 1574885308.  

External links



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