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 and type:	German 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:	29 merchant ships sunk (33,740 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.

She was built by AG Vulcan of Hamburg and following just under a year of construction, launched at Hamburg on 9 June 1917. UB-64 was commissioned later that same year under the command of Kptlt. Otto von Schrader.

Like all Type UB III submarines, UB-64 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-64 would carry a crew of up to 3 officer and 31 men and had a cruising range of 8,420 nautical miles (15,590 km; 9,690 mi). UB-64 had a displacement of 508 t (500 long tons) while surfaced and 639 t (629 long tons) when submerged. Her engines enabled her to travel at 13.3 knots (24.6 km/h; 15.3 mph) when surfaced and 8 knots (15 km/h; 9.2 mph) when submerged.