SPECIFICATIONS

Overall Length x Maximum Breadth:    311 ft. 8 in.  x  27 ft. 3 in.
Displacement:  1,980-2,000 tons Surfaced;  2,415 tons Submerged.
Operating Depth:  400 feet.
Watertight Compartments:  8 plus conning tower.
Pressure Hull Plating:  approx. 7/8 in. high tensile steel.
Torpedo Tubes:  6 bow; 4 stern;  max load = 28
Deck Guns:  1 or 2 5-in./25-cal.
Maximum Speed:  20.25 knots surfaced;  8.75 knots submerged.
Cruising Range:  11,000 miles surfaced at 10 knots.
Submerged Endurance:  48 hours at 2 knots.
Fuel Capacity:  118,510 gallons.
Patrol Endurance:  75 days.
Propulsion:  Diesel-electric direct with 4 main generator engines, 1 aux. generator.
             2 main motors with 5,400 shaft horse power.
             2 126-cell main storage batteries.


CONSTRUCTION:

Number of boats:  80 boats ordered between 1943 and 1946,
                  but only 26 completed.
Builders:  Portsmouth (SS 417-424, 475-489);  Cramp & Sons (SS 425);
           Electric Boat (SS 435);  Boston (SS 522)










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