United States K-class submarine

USS K-1 (SS-32) underway in 1916
Class overview
Name	K class
Builders	Electric Boat (design) Fore River Shipyard Union Iron Works The Moran Company
Operators	United States Navy
Preceded by	H class
Succeeded by	L class
Built	1912–1914
In commission	1914–1923
Completed	8
Retired	8
General characteristics
Type	Submarine
Displacement	392 long tons (398 t) surfaced 521 long tons (529 t) submerged
Length	153 ft 7 in (46.81 m)
Beam	16 ft 8 in (5.08 m)
Draft	13 ft 1 in (3.99 m)
Installed power	950 hp (710 kW) (diesel engines) 680 hp (510 kW) (electric motors)
Propulsion	Diesel/electric 2 × NELSECO diesel engines 2 × Electro Dynamic electric motors 2 × 60-cell batteries 2 × shafts
Speed	14 knots (26 km/h; 16 mph) surfaced 10.5 knots (19.4 km/h; 12.1 mph) submerged
Range	4,500 nmi (8,300 km) at 10 kn (19 km/h; 12 mph) surfaced 120 nmi (220 km) at 5 kn (9.3 km/h; 5.8 mph) submerged
Test depth	200 ft (61 m)
Complement	28 officers and men
Armament	4 × 18 inch (450 mm) torpedo tubes (bow) 8 × torpedoes

The K-class submarines were a class of eight submarines of the United States Navy, serving between 1914 and 1923, including World War I. They were designed by Electric Boat and were built by other yards under subcontracts. K-1, K-2, K-5, and K-6 were built by Fore River Shipyard in Quincy, Massachusetts, K-3, K-7, and K-8 by Union Iron Works in San Francisco, and K-4 by The Moran Company in Seattle, Washington. All were decommissioned in 1923 and scrapped in 1931 to comply with the limits of the London Naval Treaty.