The were the
United States Navy 's first production run of nuclear powered submarines. They were an evolution of the
''Tang'' Class in everything but their propulsion plants, which were based on the experimental
USS ''Nautilus'' .
''Skate'' and ''Sargo'' were built with the
S3W Reactor , ''Swordfish'' and ''Seadragon'' with the
S4W Reactor . Later, all were given the
S5W Reactor .
- Displacement: 2250 tons surfaced, 2850 tons dived
- Length: 81.5 m (267 ft 7 in)
- Beam: 7.6 m (25 ft)
- Draft: 6.5 m (21 ft 3 in)
- Depth: 700 feet (213 m)
- Speed: 18 knots (33 km/h) surfaced, 22 knots (41 km/h) submerged
- Complement: 84 officers and men
- Armament: 4 x 21 in (533 mm) bow torpedo tubes, two stern
