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The UGM-96 Trident I, or Trident C4, was an American submarine-launched ballistic missile (SLBM), built by Lockheed Martin Space Systems in Sunnyvale, California. First deployed in 1979, the Trident I replaced the Poseidon missile.
The Trident was built in two variants: the I (C4) UGM-96A and II (D5) UGM-133A; however, these two missiles have little in common. While the C4, formerly known as EXPO (Extended Range Poseidon), is just an improved version of the Poseidon C-3 missile, the Trident II D-5 has a completely new design (although with some technologies adopted from ...
The Ohio class was designed in the 1970s to carry the concurrently designed Trident submarine-launched ballistic missile. The first eight Ohio-class submarines were armed at first with 24 Trident I C4 SLBMs. [6] Beginning with the ninth Trident submarine, Tennessee, the remaining boats were equipped with the larger, three-stage Trident II D5 ...
The United States had deployed nuclear weapons aboard submarines for the purpose of deterrence since 1959, using the SSM-N-8 Regulus cruise missile.However, this was intended to act merely as a stop-gap, as the Regulus was limited both by its size – the greatest number of missiles capable of being taken to sea was five aboard USS Halibut – range and speed, as well as the fact that the ...
Trident: US Lockheed Martin Space Systems: 7,400 km 33,142 kg 8x 100 kt Inactive 1977 Yes Ohio-class submarine: 380 m < 26 Atlas [Note 5] US Consolidated Vultee Aircraft (Convair) 14,500 km 117,900 kg Inactive 1959 No 27 Titan I: US Glenn L. Martin Company: 10,200 km 105,140 kg 3.75 Mt Inactive 1959 No Silo 28 Titan II: US Glenn L. Martin Company
The warhead was initially manufactured from 1978 to 1987 and designed by Los Alamos National Laboratory.It was initially fitted to the Trident I SLBM system, but after the Rocky Flats plant where its successor the W88 was being made was shut down in 1989 after a production run of only 400 warheads, it was decided to transfer W76 warheads to Trident II.
The Trident II was designed with greater range and payload capacity than its predecessor (Trident C-4). In 1972, the US Navy projected an initial operating capability (IOC) date of 1984. The US Navy shifted the IOC date to 1982. On 18 October 1973, a Trident program review was administered.
The Vanguard class is a class of nuclear-powered ballistic missile submarines (SSBNs) in service with the Royal Navy. [2] The class was introduced in 1994 as part of the Trident nuclear programme, and comprises four vessels: Vanguard, Victorious, Vigilant and Vengeance, built between 1986 and 1999 at Barrow-in-Furness by Vickers Shipbuilding and Engineering, now owned by BAE Systems. [3]