SM UB-28

	SM UB-45, a U-boat similar to UB-28
History
German Empire
Name	UB-28
Ordered	30 April 1915
Builder	AG Weser, Bremen
Cost	1,291,000 German Papiermark
Yard number	242
Laid down	12 July 1915
Launched	20 December 1915
Commissioned	27 December 1915
Fate	Surrendered 24 November 1918
General characteristics y
Class & type	Type UB II submarine
Displacement	265 t (261 long tons) surfaced; 291 t (286 long tons) submerged;
Length	36.13 m (118 ft 6 in) o/a; 27.13 m (89 ft) pressure hull;
Beam	4.36 m (14 ft 4 in) o/a; 3.85 m (13 ft) pressure hull;
Draught	3.66 m (12 ft)
Propulsion	1 × propeller shaft; 2 × 6-cylinder diesel engine, 270 PS (200 kW; 270 bhp); 2 × electric motor, 280 PS (210 kW; 280 shp);
Speed	8.90 knots (16.48 km/h; 10.24 mph) surfaced; 5.72 knots (10.59 km/h; 6.58 mph) submerged;
Range	7,200 nmi (13,300 km; 8,300 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	30-second diving time
Service record
Commanders:	Oblt.z.S. Ernst Rosenow; 27 December 1915 – 13 January 1916;
Operations:	No patrols
Victories:	None

SM UB-28 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 20 December 1915. She was commissioned into the German Imperial Navy on 27 December 1915 as SM UB-28.

UB-28 was surrendered to Britain in accordance with the requirements of the Armistice with Germany on 24 November 1918. She was ultimately broken up at Bo'ness in 1919-20.

History
SM UB-45, a U-boat similar to UB-28
German Empire
Name	UB-28
Ordered	30 April 1915
Builder	AG Weser, Bremen
Cost	1,291,000 German Papiermark
Yard number	242
Laid down	12 July 1915
Launched	20 December 1915
Commissioned	27 December 1915
Fate	Surrendered 24 November 1918
General characteristics y
Class & type	Type UB II submarine
Displacement	265 t (261 long tons) surfaced 291 t (286 long tons) submerged
Length	36.13 m (118 ft 6 in) o/a 27.13 m (89 ft) pressure hull
Beam	4.36 m (14 ft 4 in) o/a 3.85 m (13 ft) pressure hull
Draught	3.66 m (12 ft)
Propulsion	1 × propeller shaft 2 × 6-cylinder diesel engine, 270 PS (200 kW; 270 bhp) 2 × electric motor, 280 PS (210 kW; 280 shp)
Speed	8.90 knots (16.48 km/h; 10.24 mph) surfaced 5.72 knots (10.59 km/h; 6.58 mph) submerged
Range	7,200 nmi (13,300 km; 8,300 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	30-second diving time
Service record
Commanders:	Oblt.z.S. Ernst Rosenow 27 December 1915 – 13 January 1916
Operations:	No patrols
Victories:	None