HMS G12

	A G-class submarine before bow modification.
History
United Kingdom
Name	G12
Builder	Vickers
Laid down	7 April 1915
Launched	24 March 1916
Commissioned	15 June 1916
Fate	Sold, 14 February 1920 to JG Potts
General characteristics
Class & type	G-class submarine
Displacement	703 long tons (714 t) surfaced; 837 long tons (850 t) submerged;
Length	187 ft 1 in (57.0 m)
Beam	22 ft 8 in (6.9 m)
Draught	13 ft 4 in (4.1 m)
Installed power	1,600 bhp (1,200 kW) (diesel); 840 hp (630 kW) (electric motor);
Propulsion	2 × diesel engines; 2 × electric motors;
Speed	14.25 knots (26.39 km/h; 16.40 mph) surfaced; 9 knots (17 km/h; 10 mph) submerged;
Range	2,400 nmi (4,400 km; 2,800 mi) at 12.5 kn (23.2 km/h; 14.4 mph) surfaced
Complement	30
Armament	4 × 18-inch (45 cm) torpedo tubes; 1 × 21-inch (53.3 cm) torpedo tube;