USS Lewis and Clark (1965). Launched in 1965, this Benjamin Franklin–class ballistic-missile submarine initially carried 16 Polaris A-3 missiles, each with three W58 warheads. After a conversion in 1972, the Lewis and Clark carried Poseidon C-3 ballistic missiles, each with up to 14 W68 warheads. It was decommissioned in 1992.