SM UB-22

	SM UB-45, a U-boat similar to UB-22
History
German Empire
Name	UB-22
Ordered	30 April 1915
Builder	Blohm & Voss, Hamburg
Yard number	252
Launched	9 October 1915
Completed	1 March 1916
Commissioned	2 March 1916
Fate	Sunk by mine 19 January 1918
General characteristics
Class & type	Type UB II submarine
Displacement	263 t (259 long tons) surfaced; 292 t (287 long tons) submerged;
Length	36.13 m (118 ft 6 in) o/a; 27.13 m (89 ft) pressure hull (o/a);
Beam	4.36 m (14 ft 4 in) o/a; 3.85 m (13 ft) pressure hull;
Draught	3.70 m (12 ft 2 in)
Propulsion	1 × propeller shaft; 2 × 6-cylinder diesel engine, 284 PS (209 kW; 280 bhp); 2 × electric motor, 280 PS (210 kW; 280 shp);
Speed	9.15 knots (16.95 km/h; 10.53 mph) surfaced; 5.81 knots (10.76 km/h; 6.69 mph) submerged;
Range	6,450 nmi (11,950 km; 7,420 mi) at 5 knots (9.3 km/h; 5.8 mph) surfaced; 45 nmi (83 km; 52 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged;
Test depth	50 m (160 ft)
Complement	2 officers, 21 men
Armament	2 × 50 cm (19.7 in) torpedo tubes; 4 × torpedoes (later 6); 1 × 5 cm SK L/40 gun;
Notes	45-second diving time
Service record
Part of:	I Flotilla; 14 April 1916 – 1 February 1917; II Flotilla; 1 February – 22 September 1917; V Flotilla; 22 September 1917 – 19 January 1918;
Commanders:	Oblt.z.S. Bernhard Putzier; 2 March 1916 – 16 April 1917; Oblt.z.S. Karl Wacker; 17 April 1917 – 19 January 1918;
Operations:	18 patrols
Victories:	27 merchant ships sunk ; (16,645 GRT)

SM UB-22 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 9 October 1915. She was commissioned into the German Imperial Navy on 2 March 1915 as SM UB-22. The submarine sank 27 ships in 18 patrols for a total of 16,645 gross register tons (GRT). UB-22 was mined and sunk in the same incident with the torpedoboat SMS S16 in the North Sea at 54°40′N 6°32′E / 54.667°N 6.533°E / 54.667; 6.533 on 19 January 1918 in a British minefield.

History
SM UB-45, a U-boat similar to UB-22
German Empire
Name	UB-22
Ordered	30 April 1915
Builder	Blohm & Voss, Hamburg
Yard number	252
Launched	9 October 1915
Completed	1 March 1916
Commissioned	2 March 1916
Fate	Sunk by mine 19 January 1918
General characteristics
Class & type	Type UB II submarine
Displacement	263 t (259 long tons) surfaced 292 t (287 long tons) submerged
Length	36.13 m (118 ft 6 in) o/a 27.13 m (89 ft) pressure hull (o/a)
Beam	4.36 m (14 ft 4 in) o/a 3.85 m (13 ft) pressure hull
Draught	3.70 m (12 ft 2 in)
Propulsion	1 × propeller shaft 2 × 6-cylinder diesel engine, 284 PS (209 kW; 280 bhp) 2 × electric motor, 280 PS (210 kW; 280 shp)
Speed	9.15 knots (16.95 km/h; 10.53 mph) surfaced 5.81 knots (10.76 km/h; 6.69 mph) submerged
Range	6,450 nmi (11,950 km; 7,420 mi) at 5 knots (9.3 km/h; 5.8 mph) surfaced 45 nmi (83 km; 52 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	50 m (160 ft)
Complement	2 officers, 21 men
Armament	2 × 50 cm (19.7 in) torpedo tubes 4 × torpedoes (later 6) 1 × 5 cm SK L/40 gun
Notes	45-second diving time
Service record
Part of:	I Flotilla 14 April 1916 – 1 February 1917 II Flotilla 1 February – 22 September 1917 V Flotilla 22 September 1917 – 19 January 1918
Commanders:	Oblt.z.S. Bernhard Putzier 2 March 1916 – 16 April 1917 Oblt.z.S. Karl Wacker 17 April 1917 – 19 January 1918
Operations:	18 patrols
Victories:	27 merchant ships sunk (16,645 GRT)