SM UB-27

	SM UB-45, a U-boat similar to UB-27
History
German Empire
Name	UB-27
Ordered	30 April 1915
Builder	AG Weser, Bremen
Cost	1,291,000 German Papiermark
Yard number	241
Laid down	8 July 1915
Launched	10 February 1916
Commissioned	23 February 1916
Fate	Sunk by British warship on 29 July 1917
General characteristics
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	8.9 knots (16.5 km/h; 10.2 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
Part of:	I Flotilla; 14 April 1916 - 1 February 1917; II Flotilla; 1 February - 21 April 1917; Baltic Flotilla; 21 April - 19 July 1917; Flandern Flotilla; 19 – 29 July 1917;
Commanders:	Kptlt. Victor Dieckmann; 23 February – 31 October 1916; Oblt.z.S. Hans Georg Lübbe; 1 November 1916 – 23 April 1917; Oblt.z.S. Freiherr Heinz von Stein zu Lausnitz; 24 April – 29 July 1917;
Operations:	17 patrols
Victories:	10 merchant ships sunk ; (16,094 GRT); 1 auxiliary warship sunk ; (1,997 GRT); 3 merchant ships damaged ; (3,240 GRT); 1 merchant ship taken as prize ; (1,019 GRT);

SM UB-27 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 10 February 1916. She was commissioned into the German Imperial Navy on 23 February 1916 as SM UB-27. UB-27 sank 11 ships in 17 patrols for a total of 18,091 gross register tons (GRT).

History
SM UB-45, a U-boat similar to UB-27
German Empire
Name	UB-27
Ordered	30 April 1915
Builder	AG Weser, Bremen
Cost	1,291,000 German Papiermark
Yard number	241
Laid down	8 July 1915
Launched	10 February 1916
Commissioned	23 February 1916
Fate	Sunk by British warship on 29 July 1917
General characteristics
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	8.9 knots (16.5 km/h; 10.2 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
Part of:	I Flotilla 14 April 1916 - 1 February 1917 II Flotilla 1 February - 21 April 1917 Baltic Flotilla 21 April - 19 July 1917 Flandern Flotilla 19 – 29 July 1917
Commanders:	Kptlt. Victor Dieckmann 23 February – 31 October 1916 Oblt.z.S. Hans Georg Lübbe 1 November 1916 – 23 April 1917 Oblt.z.S. Freiherr Heinz von Stein zu Lausnitz 24 April – 29 July 1917
Operations:	17 patrols
Victories:	10 merchant ships sunk (16,094 GRT) 1 auxiliary warship sunk (1,997 GRT) 3 merchant ships damaged (3,240 GRT) 1 merchant ship taken as prize (1,019 GRT)