Polaris missile was a two-stage sol

Polaris missile was a two-stage solid-fueled nuclear-armed submarine-launched ballistic missile (SLBM) built during the Cold War by Lockheed Corporation for the United States Navy.

It was designed to be used for second strike counter value (CEP not good enough for first strike counter force) as part of the Navy's contribution to the United States arsenal of nuclear weapons, replacing the Regulus cruise missile. Known as a Fleet Ballistic Missile (FBM), the Polaris was first launched from the Cape Canaveral, Florida, missile test base on January 7, 1960.