USS M-1

	USS M-1
Class overview
Name	M class
Builders	Electric Boat Company (design); Fore River Shipbuilding;
Operators	United States Navy
Preceded by	L class
Succeeded by	AA-1 class
Built	1914
In service	1915-1922
In commission	1918–1922
History
United States
Name	USS M-1
Builder	Electric Boat (design),; Fore River Shipbuilding, Quincy, Massachusetts;
Laid down	2 July 1914
Launched	14 September 1915
Commissioned	16 February 1918
Decommissioned	15 March 1922
Stricken	16 March 1922
Fate	Sold for scrap, 25 September 1922
General characteristics
Class & type	Submarine
Displacement	488 long tons (496 t) (surfaced); 676 long tons (687 t) (submerged);
Length	197 ft (60 m)
Beam	19 ft (5.8 m)
Draft	11 ft (3.4 m)
Propulsion	Diesel-electric; NELSECO diesel engines, 840 hp (630 kW); 2 × Electro Dynamic electric motors, 680 hp (510 kW); 2 × 60-cell batteries (in one compartment); 2 × shafts,; 28,422 US gal (107,590 L; 23,666 imp gal) fuel;
Speed	14 kn (16 mph; 26 km/h) surfaced; 10.5 knots (19.4 km/h; 12.1 mph) submerged;
Range	2,750 nmi (5,090 km) at 11 kn (20 km/h; 13 mph) (surfaced)
Test depth	150 ft (46 m)
Complement	2 officers, 26 enlisted
Armament	1 × 3 in (76 mm)/23 caliber retractable deck gun; 4 × 18-inch (450 mm) torpedo tubes, 8 torpedoes;
Notes	Followed by AA-1-class submarines

USS M-1 (SS-47) was a unique submarine of the United States Navy. Although built as a fully operational boat, M-1 was built with a radically different double-hulled design. This was in marked contrast to Simon Lake's and Electric Boat's single-hulled concepts. Ultimately shown to be unsuccessful, no other submarines of this class were built, although future advances in construction and metallurgy science made the double hull design a standard one for the USN.

Class overview
USS M-1
Name	M class
Builders	Electric Boat Company (design) Fore River Shipbuilding
Operators	United States Navy
Preceded by	L class
Succeeded by	AA-1 class
Built	1914
In service	1915-1922
In commission	1918–1922
History
United States
Name	USS M-1
Builder	Electric Boat (design), Fore River Shipbuilding, Quincy, Massachusetts
Laid down	2 July 1914
Launched	14 September 1915
Commissioned	16 February 1918
Decommissioned	15 March 1922
Stricken	16 March 1922
Fate	Sold for scrap, 25 September 1922
General characteristics
Class & type	Submarine
Displacement	488 long tons (496 t) (surfaced) 676 long tons (687 t) (submerged)
Length	197 ft (60 m)
Beam	19 ft (5.8 m)
Draft	11 ft (3.4 m)
Propulsion	Diesel-electric NELSECO diesel engines, 840 hp (630 kW) 2 × Electro Dynamic electric motors, 680 hp (510 kW) 2 × 60-cell batteries (in one compartment) 2 × shafts, 28,422 US gal (107,590 L; 23,666 imp gal) fuel
Speed	14 kn (16 mph; 26 km/h) surfaced 10.5 knots (19.4 km/h; 12.1 mph) submerged
Range	2,750 nmi (5,090 km) at 11 kn (20 km/h; 13 mph) (surfaced)
Test depth	150 ft (46 m)
Complement	2 officers, 26 enlisted
Armament	1 × 3 in (76 mm)/23 caliber retractable deck gun 4 × 18-inch (450 mm) torpedo tubes, 8 torpedoes
Notes	Followed by AA-1-class submarines