UUM-44 SUBROC
Encyclopedia
The UUM-44 SUBROC was a type of submarine
-launched rocket
deployed by the United States Navy
as an anti-submarine weapon.
in 1989. Because the nuclear warhead was an integral part of the weapon, SUBROC could not be exported to other navies, and there is no evidence that any were supplied to other NATO allies under the well-established arrangements for supplying other dual-key nuclear weapons. Towards the end of the 1970s, a planned successor, the UUM-125 Sea Lance, was frequently delayed due to funding problems and eventually canceled.
5 kiloton nuclear depth bomb
, drops into the water, sinking rapidly before exploding in proximity to its target. A direct hit was not necessary.
Technically, its tactical use was as an urgent-attack long-range weapon that could attack time-urgent submarine targets that could not be attacked with any other weapon without betraying the position of the launching submarine by calling for an air-strike, or where the target was too distant to be attacked quickly with a torpedo launched from the submarine. The tactical rationale for SUBROC was similar to that for ASROC
or Ikara
. An added advantage was that SUBROC's approach to the target was not detectable by the target in time to take evasive action, although the warhead yield would appear to make evasive maneuvers unrealistic. However, SUBROC was less flexible in its use than Ikara or ASROC: since its only payload was a nuclear warhead, it could not be used to provide stand-off fire in a conventional (i.e., non-nuclear) engagement.
Submarine
A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which has more limited underwater capability...
-launched rocket
Rocket
A rocket is a missile, spacecraft, aircraft or other vehicle which obtains thrust from a rocket engine. In all rockets, the exhaust is formed entirely from propellants carried within the rocket before use. Rocket engines work by action and reaction...
deployed by the United States Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...
as an anti-submarine weapon.
Development
Development began in 1958, with the technical evaluation being completed in 1964. The next year, the US Navy received the first rounds. SUBROC was never used in combat and all were decommissioned following the end of the Cold WarCold War
The Cold War was the continuing state from roughly 1946 to 1991 of political conflict, military tension, proxy wars, and economic competition between the Communist World—primarily the Soviet Union and its satellite states and allies—and the powers of the Western world, primarily the United States...
in 1989. Because the nuclear warhead was an integral part of the weapon, SUBROC could not be exported to other navies, and there is no evidence that any were supplied to other NATO allies under the well-established arrangements for supplying other dual-key nuclear weapons. Towards the end of the 1970s, a planned successor, the UUM-125 Sea Lance, was frequently delayed due to funding problems and eventually canceled.
Operation
SUBROC could be launched from a 21 inch submarine torpedo tube. After launch, the solid fuel rocket motor fires and SUBROC rises to the surface. The launch angle then changes and SUBROC flies to its destination following a predetermined ballistic trajectory. At a predetermined time in the trajectory, the reentry vehicle (containing the warhead) separates from the solid fuel motor. The warhead, a W55W55
The W55 was an American thermonuclear warhead used as the warhead for the SUBROC antisubmarine rocket system. The W55 was designed in the early-1960s, and produced from 1964 to 1968. The last units were retired from service in 1990. A total of 285 W55 weapons were produced.The W55 had a yield...
5 kiloton nuclear depth bomb
Nuclear Depth Bomb
A Nuclear Depth Bomb is the nuclear equivalent of the conventional depth charge and can be used in Anti-Submarine Warfare for attacking submerged submarines...
, drops into the water, sinking rapidly before exploding in proximity to its target. A direct hit was not necessary.
Technically, its tactical use was as an urgent-attack long-range weapon that could attack time-urgent submarine targets that could not be attacked with any other weapon without betraying the position of the launching submarine by calling for an air-strike, or where the target was too distant to be attacked quickly with a torpedo launched from the submarine. The tactical rationale for SUBROC was similar to that for ASROC
ASROC
ASROC is an all-weather, all sea-conditions anti-submarine missile system. Developed by the United States Navy in the 1950s, it was deployed in the 1960s, updated in the 1990s, and eventually installed on over 200 USN surface ships, specifically cruisers, destroyers, and frigates...
or Ikara
Ikara (missile)
The Ikara missile was an Australian ship-launched anti-submarine missile, named after an Australian Aboriginal word for "throwing stick". It launched an acoustic torpedo to a range of , allowing fast-reaction attacks against submarines at ranges that would otherwise require the launching ship to...
. An added advantage was that SUBROC's approach to the target was not detectable by the target in time to take evasive action, although the warhead yield would appear to make evasive maneuvers unrealistic. However, SUBROC was less flexible in its use than Ikara or ASROC: since its only payload was a nuclear warhead, it could not be used to provide stand-off fire in a conventional (i.e., non-nuclear) engagement.
See also
- RUR-5 ASROC
- RUM-139 VL-ASROCRUM-139 VL-AsrocThe RUM-139 VL-ASROC is an anti-submarine missile in the ASROC family, currently built by the Lockheed Martin company for the U.S. Navy.The design and development of the missile began in 1983 when the Goodyear Aerospace company was contracted by the U.S. Navy to develop a ship-launched...
- Ikara (missile)Ikara (missile)The Ikara missile was an Australian ship-launched anti-submarine missile, named after an Australian Aboriginal word for "throwing stick". It launched an acoustic torpedo to a range of , allowing fast-reaction attacks against submarines at ranges that would otherwise require the launching ship to...
- RPK-2 Viyuga
- List of nuclear weapons
- Sea Lance