SM UB-64

	UB-148 at sea, a U-boat similar to UB-64.
History
German Empire
Name	UB-64
Ordered	20 May 1916
Builder	AG Vulcan, Hamburg
Cost	3,279,000 German Papiermark
Yard number	89
Launched	9 June 1917
Commissioned	5 August 1917
Fate	Surrendered to the British 21 November 1918 and broken up in Fareham in 1921
General characteristics
Class & type	Type UB III submarine
Displacement	508 t (500 long tons) surfaced; 639 t (629 long tons) submerged;
Length	55.52 m (182 ft 2 in) (o/a)
Beam	5.76 m (18 ft 11 in)
Draught	3.70 m (12 ft 2 in)
Propulsion	2 × propeller shaft; 2 × MAN four-stroke 6-cylinder diesel engines, 1,085 bhp (809 kW); 2 × Siemens-Schuckert electric motors, 780 shp (580 kW);
Speed	13.3 knots (24.6 km/h; 15.3 mph) surfaced; 7.8 knots (14.4 km/h; 9.0 mph) submerged;
Range	8,420 nmi (15,590 km; 9,690 mi) at 6 knots (11 km/h; 6.9 mph) surfaced; 55 nmi (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged;
Test depth	50 m (160 ft)
Complement	3 officers, 31 men
Armament	5 × 50 cm (19.7 in) torpedo tubes (4 bow, 1 stern); 10 torpedoes; 1 × 8.8 cm (3.46 in) deck gun;
Service record
Part of:	V Flotilla; 10 September 1917 – 20 April 1918; II Flotilla; 20 April – 11 November 1918;
Commanders:	Kptlt. Otto von Schrader; 5 August – 31 October 1917; Kptlt. Walter Gude; 1 November 1917 – 25 January 1918; Kptlt. Woldemar Petri; 26 January – 27 February 1918; Kptlt. Otto von Schrader; 28 February – 31 August 1918; Oblt.z.S. Ernst Krieger; 1 September – 11 November 1918;
Operations:	8 patrols
Victories:	27 merchant ships sunk ; (21,528 GRT); 2 auxiliary warships sunk ; (12,221 GRT); 4 merchant ships damaged ; (48,497 GRT); 1 merchant ship taken as prize ; (371 GRT);

SM UB-64 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 5 August 1917 as SM UB-64.

UB-64 was surrendered to the British on 21 November 1918 in accordance with the requirements of the Armistice with Germany and broken up in Fareham in 1921.

History
UB-148 at sea, a U-boat similar to UB-64.
German Empire
Name	UB-64
Ordered	20 May 1916
Builder	AG Vulcan, Hamburg
Cost	3,279,000 German Papiermark
Yard number	89
Launched	9 June 1917
Commissioned	5 August 1917
Fate	Surrendered to the British 21 November 1918 and broken up in Fareham in 1921
General characteristics
Class & type	Type UB III submarine
Displacement	508 t (500 long tons) surfaced 639 t (629 long tons) submerged
Length	55.52 m (182 ft 2 in) (o/a)
Beam	5.76 m (18 ft 11 in)
Draught	3.70 m (12 ft 2 in)
Propulsion	2 × propeller shaft 2 × MAN four-stroke 6-cylinder diesel engines, 1,085 bhp (809 kW) 2 × Siemens-Schuckert electric motors, 780 shp (580 kW)
Speed	13.3 knots (24.6 km/h; 15.3 mph) surfaced 7.8 knots (14.4 km/h; 9.0 mph) submerged
Range	8,420 nmi (15,590 km; 9,690 mi) at 6 knots (11 km/h; 6.9 mph) surfaced 55 nmi (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	50 m (160 ft)
Complement	3 officers, 31 men
Armament	5 × 50 cm (19.7 in) torpedo tubes (4 bow, 1 stern) 10 torpedoes 1 × 8.8 cm (3.46 in) deck gun
Service record
Part of:	V Flotilla 10 September 1917 – 20 April 1918 II Flotilla 20 April – 11 November 1918
Commanders:	Kptlt. Otto von Schrader 5 August – 31 October 1917 Kptlt. Walter Gude 1 November 1917 – 25 January 1918 Kptlt. Woldemar Petri 26 January – 27 February 1918 Kptlt. Otto von Schrader 28 February – 31 August 1918 Oblt.z.S. Ernst Krieger 1 September – 11 November 1918
Operations:	8 patrols
Victories:	27 merchant ships sunk (21,528 GRT) 2 auxiliary warships sunk (12,221 GRT) 4 merchant ships damaged (48,497 GRT) 1 merchant ship taken as prize (371 GRT)