The first launch of the Regulus I cruise missile from a submarine.

The SSM-N-8A Regulus or the Regulus I was a United States Navy-developed ship-and-submarine-launched, nuclear-capable turbojet-powered second generation cruise missile, deployed from 1955 to 1964.
The first launch from a submarine occurred in July 1953 from the deck of USS Tunny, a World War II fleet boat modified to carry Regulus.

[@paaat001]

2:25 Wow that T-33/TV-2 was low after the chute deployment

[@jerrywatt6813]

There is a display at the weapons test center at mugu that one of these and the second version it quite big right of highway 1 in so cal in Oxnard!