SM U-2 (Germany)

Class overview
Operators	Imperial German Navy
Preceded by	U 1
Succeeded by	Type U 3
Completed	1
History
German Empire
Name	U–2
Ordered	4 March 1906
Builder	Kaiserliche Werft Danzig
Cost	1,548,000 Goldmark
Yard number	1
Launched	18 June 1908
Commissioned	18 July 1908
Decommissioned	19 February 1919
Fate	Sold to Stinnes 3 February 1920 for shipbreaking
General characteristics
Class & type	Unique U-boat
Displacement	341 t (336 long tons) surfaced; 430 t (420 long tons) submerged;
Length	45.42 m (149 ft) (o/a); 39.30 m (128 ft 11 in) (pressure hull);
Beam	5.50 m (18 ft 1 in)
Draught	3.05 m (10 ft)
Installed power	2 × Körting 6-cylinder two stroke kerosene motor with a total of 400 PS (294 kW; 395 shp) for surface use until 1910; 2 × Daimler 6-cylinder four stroke paraffin motors with 600 PS (440 kW; 590 shp) for surface use after 1910; 2 × SSW electric motors with 630 PS (460 kW; 620 shp) submerged;
Propulsion	2 shafts; 2 × 1 m (3 ft 3 in) propellers;
Speed	13.2 kn (24.4 km/h; 15.2 mph) surfaced; 9 knots (17 km/h; 10 mph) submerged;
Range	1,600 nautical miles (3,000 km; 1,800 mi) at 13 knots (24 km/h; 15 mph) surfaced; 50 nautical miles (93 km; 58 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged;
Test depth	30 m (98 ft)
Complement	3 officers, 19 men
Armament	2 bow and 2 stern torpedo tubes; 6 45 cm (17.7 in) torpedoes;
Service record
Part of	Training Flotilla; 1 August 1914 - 11 November 1918;
Operations	none
Victories	No ships sunk or damaged

SM U-2 was a German U-boat built for the Imperial German Navy. She was the second submarine to enter service in the German Navy and was a vast improvement over her predecessor U-1, although problems with her propulsion plant dogged her for the duration of her career. U-2 was only used for gathering experience with operating submarines and for crew training, she saw no active service during World War I.