AA-1-class submarine

	USS AA-1 (SS-52)
Class overview
Name	AA-1 class
Builders	Electric Boat Company (design); Fore River Shipbuilding;
Operators	United States Navy
Preceded by	USS M-1
Succeeded by	N class
Built	1916–1922
In service	1920–1927
Completed	3
Retired	3
General characteristics
Type	Submarine
Displacement	1,107 long tons (1,125 t) (surfaced); 1,482 long tons (1,506 t) (submerged);
Length	268 ft 9 in (81.92 m) overall
Beam	22 ft 10 in (6.96 m)
Draft	14 ft 2 in (4.32 m)
Propulsion	(as built) 4 × NELSECO diesel engines, 1000 hp (746 kW) each; 2 × Electro Dynamic electric motors, 675 hp (503 kW) each; 1 × NELSECO auxiliary diesel generator; 2 × 60-cell Exide batteries; 2 × shafts;
Speed	20 kn (23 mph; 37 km/h) surfaced; 10.5 knots (19.4 km/h; 12.1 mph) submerged;
Range	3,000 nmi (5,600 km) at 14 kn (26 km/h; 16 mph) (surfaced); 100 nmi (190 km) at 5 kn (9.3 km/h; 5.8 mph) (submerged);
Test depth	150 ft (46 m)
Complement	38
Armament	AA-1 (as built) eight 18 inch (450 mm) torpedo tubes (four bow internal, four mounted under the deck in trainable pairs fore and aft of the conning tower) 16 torpedoes total, two 3-inch (76 mm)/23 caliber retractable deck guns ; AA-1 (early modification) six 18 inch (450 mm) torpedo tubes (four bow internal, two mounted under the deck in trainable pair aft of the conning tower) 14 torpedoes total, one 4-inch (102 mm)/50 caliber fixed deck gun forward; AA-1 (later modification), AA-2 and AA3 (as built) four 18 inch (450 mm) torpedo tubes (four bow internal) 12 torpedoes total, one 4-inch (102 mm)/50 caliber fixed deck gun forward ;

The AA-1 class was a class of three experimental submarines of the United States Navy, built toward the end of World War I, between 1916 and 1919, intended to produce a high-speed fleet submarine. The design was not a success and none of the submarines saw active service. However, the lessons learned were applied to the design of the later V-boats. The class was later renamed as the T class.

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