Grayback class submarine was a class of two guided missile carrying submarines of the United States Navy

United States Navy

The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

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These submarines carried the primitive short-lived Regulus

SSM-N-8 Regulus

The SSM-N-8A Regulus was a ship and submarine launched, nuclear armed cruise missile deployed by the United States Navy from 1955 to 1964.-Design and development:...

 cruise missiles that were quickly phased out by Polaris SLBMs. They were the sole class designed specifically to carry the Regulus missile.

Ships

, launched 1957, served 1958-1964, converted to an amphibious transport submarine, and served 1969-1984. Sunk as a target, 1986., launched 1958, served 1958-1964. Museum ship from 2009.