The first launch of a Trident I, from Cape Canaveral, on 18 January 1977. |
|
| Function | SLBM |
|---|---|
| Manufacturer | Lockheed Martin Space Systems |
| Size | |
| Height | 10.2 metres (33 ft) |
| Diameter | 1.8 metres (71 in) |
| Mass | 33,142 kilograms (73,070 lb) |
| Stages | 3 |
| Launch history | |
| Status | Retired |
| Launch sites | LC-25C, Cape Canaveral Ohio class submarines James Madison class submarines Benjamin Franklin class submarines |
| Total launches | 168[1] |
| Successes | 161 |
| Failures | 7 |
| Maiden flight | 1977-01-18[1] |
| Last flight | 2001-12-18[1] |
The UGM-96 Trident I, or Trident C4 was an American Submarine-launched ballistic missile, built by Lockheed Martin Space Systems in Sunnyvale, California. First deployed in 1979, the Trident I replaced the Poseidon missile. It was retired in the Early 21st Century, having been replaced by the Trident II. In 1980, the Royal Navy requested Trident I missiles under the Polaris Sales Agreement, however in 1982, this was changed to Trident IIs. It was the first Trident missile to enter service.
The Trident I is a three-stage, solid-fuelled missile.
The first eight Ohio class submarines were armed with Trident I missiles. 12 James Madison and Benjamin Franklin class submarines were also retrofitted with Trident I missiles, which replaced older Poseidon missiles.