Dimensions:
Length -- 311 feet, 8 inches
Beam -- 27 feet, 3 inches
Draft -- (Fully Loaded) 17 feet
Number of Watertight Compartments -- 8, plus Conning Tower
Displacement -- 1570 tons (surfaced), 2415 tons(submerged)

Propulsion:
Diesel - Electric
4 Fairbanks-Morse, 10 cylinder opposed piston main generating engines
1 auxiliary generator engine (with 5400 shaft horsepower)
and 2 main motors (with 2740 SHP)
2 - 126 cell storage batteries
No. of screws (propellers) -- 2
Speed -- 21 knots (surface - on diesels), 8 knots (submerged, on batteries)
Endurance -- 75 to 90 days; 48 hours submerged, at 2 knots
Range -- 11,000 miles (cruising at 10 knots on the surface)
Maximum rated depth -- 412 feet

Armament: 1945 original configuration:
10 Torpedo Tubes -- (6 forward, 4 aft) with 24 torpedoes (10 in the tubes and 14 reloads)
2 - 5 inch, 25 caliber deck guns, mounted fore and aft of conning tower
2 - 40 mm anti-aircraft cannons, mounted on forward and after cigarette decks on conning tower

1948, after conversion to radar picket configuration:
4 torpedo tubes -- (bow) with 10 torpedoes (2 forward tubes were inactivated, 4 stern tubes were removed)
1 - 40 mm anti-aircraft cannon on foreward cigarette deck (removed in 1953)

1959 to 1968, after conversion to fleet snorkel:
6 torpedo tubes with 12 torpedoes