SM U-22 (Germany)

A German WWI period postcard of U-22
History
German Empire
Name:	U-22
Ordered:	25 November 1910
Builder:	Kaiserliche Werft Danzig
Cost:	2,450,000 Goldmark
Yard number:	16
Laid down:	14 November 1911
Launched:	6 March 1913
Commissioned:	25 November 1913
Fate:	Surrendered 1 December 1918
General characteristics
Class and type:	German Type U 19 submarine
Displacement:	650 t (640 long tons) surfaced 837 t (824 long tons) submerged
Length:	64.15 m (210 ft 6 in)
Beam:	6.10 m (20 ft)
Height:	7.30 m (23 ft 11 in)
Draught:	3.58 m (11 ft 9 in)
Propulsion:	2 shafts 2 × MAN 8-cylinder two stroke diesel motors with 1,700 PS (1,250 kW; 1,680 shp) 2 × AEG double Motordynamos with 1,200 PS (880 kW; 1,180 shp) 320 rpm submerged
Speed:	15.4 knots (28.5 km/h; 17.7 mph) surfaced 9.5 knots (17.6 km/h; 10.9 mph) submerged
Range:	9,700 nautical miles (18,000 km; 11,200 mi) at 8 kn surfaced 80 nautical miles (150 km; 92 mi) at 5 kn submerged
Test depth:	50 m (164 ft 1 in)
Boats & landing craft carried:	1 dingi
Complement:	4 officers, 31 men
Armament:	4 × 50 cm (19.7 in) torpedo tubes (2 each bow and stern) with 6 torpedoes 1 × 8.8 cm (3.5 in) SK L/30 gun (at times 2 ×)
Service record
Part of:	III Flotilla 1 August 1914 – 23 August 1916 Baltic Flotilla 23 August 1916 – 16 March 1917 III Flotilla 16 March 1917 – 11 November 1918
Commanders:	Kptlt. Bruno Hoppe 25 November 1913 – 22 August 1916 Oblt.z.S. Karl Scherb 23 August 1916 – 31 May 1917 Oblt.z.S. Hinrich Hermann Hashagen 1 June 1917 – 11 November 1918
Operations:	14 patrols
Victories:	42 merchant ships sunk (46,395 GRT) 3 merchant ships damaged (9,044 GRT) 1 merchant ship taken as a prize (1,170 GRT) 1 warship sunk (175 tons)

SM U-22 was one of 329 submarines serving in the Imperial German Navy in World War I. U-22 was engaged in commerce war as part of the naval warfare, during the First Battle of the Atlantic.

U-22 had a career of 14 patrols, sinking 43 ships for a total of 46,583 tons. Additionally, she damaged three ships totalling 9,044 tons, and captured 1 prize worth 1,170 tons.

Oblt.z.S. Hashagen was the most successful, sinking 28 of the vessels, the largest being the British passenger steamer California at 5,629 tons. She was sunk 145 nautical miles (269 km; 167 mi) NWxN3/4N of Cape Villano on 17 October 1917.