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A nuclear depth bomb is the nuclear equivalent of a conventional depth charge, and can be used in anti-submarine warfare for attacking submerged submarines.The Royal Navy, Soviet Navy, and United States Navy all had nuclear depth bombs in their arsenals at one point.
Mk-101 Lulu NDB (Nuclear Depth Bomb). The Mark 101 Lulu was an airdropped nuclear depth charge developed by the United States Navy and the Atomic Energy Commission during the 1950s. It carried a W34 nuclear warhead, with an explosive yield of about 11 kilotons.
The Mk 101 Lulu was a US nuclear depth bomb operational from 1958 to 1972. A depth charge fitted with a nuclear warhead is also known as a "nuclear depth bomb". These were designed to be dropped from a patrol plane or deployed by an anti-submarine missile from a surface ship, or another submarine, located a safe distance away.
The W44 nuclear depth charge entered service in 1961, [9] but was never used beyond one or two tests before the Limited Nuclear Test Ban Treaty banning underwater nuclear tests went into effect. A total of 575 weapons were produced.
The Mark 90 nuclear bomb, given the nickname "Betty", was a Cold War nuclear depth charge, developed by the United States in 1952. It had a length of 10 ft 2 in (3.10 m), a diameter of 2 ft 7.5 in (0.80 m), and a weight of 1,243 lb (564 kg), and it carried a Mark 7 nuclear warhead with a yield of 32 kilotons .
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. In 1980 a planned successor, the UUM-125 Sea Lance, was authorized.
Perhaps the simplest of the anti-submarine weapons, the depth charge, is a large canister filled with explosives and set to explode at a predetermined depth. The concussive effects of the explosion could damage a submarine from a distance, though a depth charge explosion had to be very close to break the submarine's hull.
60R - Original version armed with 5 kt nuclear depth charge; 70R - Original version armed with AT-2U ASW torpedo; 83R/URPK-3 Metel - Cruiser version of the missile using the guidance system from the SA-N-3 missile and the KT-106 launcher. Uses AT-1 torpedo (EA-45-70A) 84R/URPK-4 Metel-U, KT-106U launcher, used on Udaloy-class destroyers ...