SM UB-77

	SM UB-77 in Wilhelmshaven
History
German Empire
Name	UB-77
Ordered	23 September 1916
Builder	Blohm & Voss, Hamburg
Cost	3,338,000 German Papiermark
Yard number	306
Launched	5 May 1917
Commissioned	2 October 1917
Fate	Surrendered 16 January 1919.
General characteristics
Class & type	Type UB III submarine
Displacement	516 t (508 long tons) surfaced; 648 t (638 long tons) submerged;
Length	55.30 m (181 ft 5 in) (o/a)
Beam	5.80 m (19 ft)
Draught	3.68 m (12 ft 1 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	13.6 knots (25.2 km/h; 15.7 mph) surfaced; 7.8 knots (14.4 km/h; 9.0 mph) submerged;
Range	8,680 nmi (16,080 km; 9,990 mi) at 8 knots (15 km/h; 9.2 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; 30 November 1917 – 17 April 1918; I Flotilla; 17 April – 11 November 1918;
Commanders:	Kptlt. Wilhelm Meyer; 2 October 1917 – 14 June 1918; Oblt.z.S. Franz Maurer; 15 June – 11 November 1918;
Operations:	7 patrols
Victories:	1 merchant ship sunk ; (14,348 GRT); 2 merchant ships damaged ; (28,174 GRT);

SM UB-77 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 2 October 1917 as SM UB-77.

UB-77 was surrendered on 16 January 1919 in accordance with the requirements of the Armistice with Germany and broken up in Swansea in 1921.