SM UC-77

History
German Empire
Name	UC-77
Ordered	12 January 1916
Builder	AG Vulcan, Hamburg
Yard number	82
Launched	2 December 1916
Commissioned	29 December 1916
Fate	Sunk by mine, 11 July 1918
General characteristics
Class & type	Type UC II submarine
Displacement	410 t (400 long tons), surfaced; 493 t (485 long tons), submerged;
Length	50.45 m (165 ft 6 in) o/a; 40.30 m (132 ft 3 in) pressure hull;
Beam	5.22 m (17 ft 2 in) o/a; 3.65 m (12 ft) pressure hull;
Draught	3.65 m (12 ft)
Propulsion	2 × propeller shafts; 2 × 6-cylinder, 4-stroke diesel engines, 580–600 PS (430–440 kW; 570–590 shp); 2 × electric motors, 620 PS (460 kW; 610 shp);
Speed	11.8 knots (21.9 km/h; 13.6 mph), surfaced; 7.3 knots (13.5 km/h; 8.4 mph), submerged;
Range	8,660 nautical miles at 7 knots (13 km/h; 8.1 mph), surfaced; (16,040 km at 13 km/h); 52 nautical miles at 4 knots (7.4 km/h; 4.6 mph), submerged; (96 km at 7.4 km/h);
Test depth	50 m (160 ft)
Complement	26
Armament	6 × 100 cm (39.4 in) mine tubes; 18 × UC 200 mines; 3 × 50 cm (19.7 in) torpedo tubes (2 bow/external; one stern); 7 × torpedoes; 1 × 8.8 cm (3.5 in) Uk L/30 deck gun;
Notes	30-second diving time
Service record
Part of:	I Flotilla; 5 March – 4 July 1917; Flandern / Flandern II Flotilla; 4 July 1917 – 14 July 1918;
Commanders:	Kptlt. Reinhard von Rabenau; 29 December 1916 – 29 January 1918; Oblt.z.S. Johannes Ries; 30 January – 14 July 1918;
Operations:	13 patrols
Victories:	33 merchant ships sunk ; (50,498 GRT); 2 auxiliary warship sunk ; (475 GRT); 7 merchant ships damaged ; (23,734 GRT);

SM UC-77 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 12 January 1916 and was launched on 2 December 1916. She was commissioned into the German Imperial Navy on 29 December 1916 as SM UC-77. In 13 patrols UC-77 was credited with sinking 35 ships, either by torpedo or by mines laid. UC-77 was mined and sunk off Flanders on 11 July 1918.

History

German Empire
Name	UC-77
Ordered	12 January 1916
Builder	AG Vulcan, Hamburg
Yard number	82
Launched	2 December 1916
Commissioned	29 December 1916
Fate	Sunk by mine, 11 July 1918
General characteristics
Class & type	Type UC II submarine
Displacement	410 t (400 long tons), surfaced 493 t (485 long tons), submerged
Length	50.45 m (165 ft 6 in) o/a 40.30 m (132 ft 3 in) pressure hull
Beam	5.22 m (17 ft 2 in) o/a 3.65 m (12 ft) pressure hull
Draught	3.65 m (12 ft)
Propulsion	2 × propeller shafts 2 × 6-cylinder, 4-stroke diesel engines, 580–600 PS (430–440 kW; 570–590 shp) 2 × electric motors, 620 PS (460 kW; 610 shp)
Speed	11.8 knots (21.9 km/h; 13.6 mph), surfaced 7.3 knots (13.5 km/h; 8.4 mph), submerged
Range	8,660 nautical miles at 7 knots (13 km/h; 8.1 mph), surfaced (16,040 km at 13 km/h) 52 nautical miles at 4 knots (7.4 km/h; 4.6 mph), submerged (96 km at 7.4 km/h)
Test depth	50 m (160 ft)
Complement	26
Armament	6 × 100 cm (39.4 in) mine tubes 18 × UC 200 mines 3 × 50 cm (19.7 in) torpedo tubes (2 bow/external; one stern) 7 × torpedoes 1 × 8.8 cm (3.5 in) Uk L/30 deck gun
Notes	30-second diving time
Service record
Part of:	I Flotilla 5 March – 4 July 1917 Flandern / Flandern II Flotilla 4 July 1917 – 14 July 1918
Commanders:	Kptlt. Reinhard von Rabenau 29 December 1916 – 29 January 1918 Oblt.z.S. Johannes Ries 30 January – 14 July 1918
Operations:	13 patrols
Victories:	33 merchant ships sunk (50,498 GRT) 2 auxiliary warship sunk (475 GRT) 7 merchant ships damaged (23,734 GRT)