A Skate Class submarine. The first submarine (USS SKATE) to surface at the North Pole in March 1959. Last of the nuclear submarines to be fitted with torpedo tubes in the After Room.
The Skate-class submarines were amongst the smallest nuclear-powered attack submarines built and they were the United States Navy's first production run of nuclear-powered submarines.
There were just 4 Skate-class submarines built:
USS Skate SSN-578
USS Swordfish SSN-579
USS Sargo SSN-583
USS Seadragon SSN-584