SM UB-65

History
German Empire
Name	UB-65
Ordered	20 May 1916
Builder	Vulkan Werke, Hamburg
Cost	3,279,000 German Papiermark
Yard number	90
Launched	26 June 1917
Commissioned	18 August 1917
Fate	Lost to unknown cause off Padstow, Cornwall after 14 July 1918.
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, 1,050 bhp (780 kW); 2 × Siemens-Schuckert electric motors, 780 shp (580 kW);
Speed	13.3 knots (24.6 km/h; 15.3 mph) surfaced; 8 knots (15 km/h; 9.2 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 × torpedo tubes (4 bow, 1 stern); 10 × torpedoes; 1 × 8.8 cm (3.46 in) deck gun;
Service record
Part of	V Flotilla; 30 September 1917 – 18 April 1918; II Flotilla; 18 April – 14 July 1918;
Commanders	Kptlt. Martin Schelle; 18 August 1917 – 14 July 1918;
Operations	6 patrols
Victories	6 merchant ships sunk ; (6,197 GRT); 1 warship sunk ; (1,290 tons); 6 merchant ships damaged ; (11,443 GRT);

SM UB-65 was a Type UB III U-boat of the Imperial German Navy during World War I. Ordered on 20 May 1916, the U-boat was built at the Vulkan Werke shipyard in Hamburg, launched on 26 June 1917, and commissioned on 18 August 1917, under the command of Kapitänleutnant Martin Schelle.