Topic summary
UGM-73 Poseidon
The UGM-73 Poseidon missile was the second US Navynuclear-armedsubmarine-launched ballistic missile (SLBM) system, powered by a two-stagesolid-fuel rocket. It succeeded the UGM-27 Polaris beginning in 1972, bringing major advances in warheads and accuracy. It was followed by Trident I in 1979, and Trident II in 1990.