Shown here is a cutaway model of the first and second stages of the U.S. Navy's Poseidon (C-3) solid propellant, submarine-launched ballistic missile (SLBM). The simulated propellant is visible.

Transferred from the U.S. Navy Strategic Systems Program Office.

Developed and built by Lockheed, the two-stage Poseidon, with a range of 3,300 miles (5,400 kilometers) began to replace Polaris, the Navy's first generation SLBM, in 1973. The Navy designed the Poseidon to carry up to sixteen independently targeted nuclear warheads, the first SLBM to incorporate that capability. Each ballistic missile submarine carried sixteen Poseidon SLBMs.

Transferred from the U.S. Navy Strategic Systems Program Office.