Following a brief stint as a cargo submarine , Barbero was converted in 1955 to carry two surface - launched Regulus missiles .
Following a brief stint as a cargo submarine , Barbero was was redesignated as an SSG , joining the Gato - class Tunny in this role .
Following a brief stint as a cargo submarine , Barbero was converted in 1955 to carry two surface - launched Regulus missiles and was redesignated as an SSG , joining the Gato - class Tunny in this role .