Russian submarine AG-12

Career (Russia)
Name: AG-12
Builder: Electric Boat Company
Completed: 1916
Fate: scuttled 3 April 1918
Career (Finland)
Name: AG-12
Commissioned: not commissioned
Fate: scrapped; beyond repair
General characteristics
Type:AG-class submarine
Displacement:355 long tons (361 t) surfaced
433 long tons (440 t) submerged
Length:150 ft 3 in (45.80 m)
Beam:16 ft (4.9 m)
Draught:12 ft 6 in (3.81 m)
Installed power:2 shafts
Propulsion:2 diesel engines (480 bhp (360 kW))
2 electric motors (640 hp (480 kW))
Speed:13 knots (24 km/h; 15 mph) (surfaced)
10.5 knots (19.4 km/h; 12.1 mph) (submerged)
Range:1,750 nmi (3,240 km; 2,010 mi) at 7 knots (13 km/h; 8.1 mph) (surfaced)
25 nmi (46 km; 29 mi) at 3 knots (5.6 km/h; 3.5 mph) (submerged)
Test depth:164 feet (50 m)
Complement:30
Armament:4 × bow 17.9-inch (455 mm) torpedo tubes
(8 torpedoes)
1 × 47-millimeter (1.9 in) gun

The Russian submarine AG-12 was an AG-class (AG = Amerikansky Golland) submarine which served in the Gulf of Finland during World War I.

During the war, Russian submarines operated from bases in Finland. AG-12 and three of her sisters were scuttled in Hanko harbor on 3 April 1918, just prior to the German landing there. AG-12 and AG-16 seemed to be in relatively good shape and the Finns decided to salvage them. The submarine was transferred to Turku for repairs, although it proved to be hopeless, and she was soon scrapped.