USS Darter (SS-576)
Submarine
USS Darter (SS-576), a unique submarine based on the Tang class, but incorporating many improvements, was the second ship of the United States Navy to be named for the darter, a type of small American fresh-water fish. Wikipedia
Launched: May 28, 1956
Builder: General Dynamics Electric Boat
Length: 285 ft 3 in (86.94 m) o/a
Test depth: 700 ft (210 m)