UGM-133 Trident II D-5

The Trident II missile is a submarine launched ballistic missile (SLBM) designed by Lockheed Martin Space Systems in the United States. It is armed with nuclear warheads and carried by the Ohio class nuclear-powered ballistic missile submarines. Trident II D-5 was first deployed in 1990 and the US Navy currently plans to keep the missiles in service for the thirty year life of the submarines, until 2027.Trident II is more sophisticated and can carry a heavier payload. It is accurate enough to be a first strike weapon. All three stages of the Trident II are made of graphite epoxy, making the missile much lighter. The D5 missile is currently carried by twelve Ohio class SSBNs. The Trident II is a three-stage, solid-propellant, inertially guided missile whose range is increased by an aerospike, a telescoping outward extension that halves aerodynamic drag. In the post-boost phase, the Trident missile uses stellar sighting to update its position and reduce the drift error inherent in all inertial reference systems. It is considered accurate enough to engage in counterforce strikes.

UGM-133 Trident II D-5
Class Missile
Type Surface to Surface
Manufacturer Lockheed Missiles and Space Company
Quantity 462
Origin United States of America
Country Name Origin Year
United States of America 1990
Country Name Operational Year Retirement Year
United States of America 1990 View
ManufacturerName Production From Production To Quantity
Lockheed Missiles and Space Company View
General Information
Developed by USA
Deployed by USA
Development Year 1981
Deployment Year 1990
Platform Ohio-class submarines (newer 10 submarines), each carrying 24 missiles ; Vanguard-class submarines (4) in UK, each carrying 16 missiles
Number deployed 462(in FY95)
Contractor Lockheed Martin Missiles and Space Corporation, Sunnyvale, CA

Dimensions and Performance
Length 13.42m (7.35m 1st-stage, 3.12m 2nd-stage)
Body Diameter 2.11m
Launch Weight 59,090kg
Range 7,360-12,000km
Speed 6,096m/sec
Accuracy 120m CEP

Propulsion 3-stages solid-fueled rocket motor
Engine 1st and 2nd stage: Hercules/Morton-Thiokol solid-fueled rocket, 3rd stage: United Technologies Corp. solid-fueled rocket
Payload 8xMk-5 RVs(MIRV)
Warhead W-88 nuclear warhead (475kT)
Guidance stellar-aided inertial guidance system with Navster GPS reception for updates.

End notes