Military Wiki
SM U-77
Career (German Empire) War Ensign of Germany 1903-1918
Name: U-77
Ordered: 9 March 1915
Builder: AG Vulkan, Hamburg (Werk 59)
Launched: 9 January 1916
Commissioned: 10 March 1916
Fate: 7 July 1916 - Lost after this date while on a mission to lay mines off Kinnaird Head, Scotland. 33 dead (all hands lost).[1]
General characteristics
Class & type: German Type UE I submarine
Displacement: 755 tonnes (743 long tons) (surfaced)
832 tonnes (819 long tons) (submerged)
[2]
Length: 56.8 m (186 ft 4 in) (overall)[2]
46.66 m (153 ft 1 in) pressure hull[3]
Beam: 5.9 m (19 ft 4 in) (overall)[2]5 m (16 ft 5 in) pressure hull[3]
Height: 8.25 m (27 ft 1 in)[3]
Draught: 4.86 m (15 ft 11 in)[2]
Propulsion: 900 hp (670 kW) (surfaced)
660 kW (890 hp) (submerged)[2]
Speed: 9.9 knots (18.3 km/h; 11.4 mph) (surfaced)
7.9 knots (14.6 km/h; 9.1 mph) (submerged)[2]
Range: 7,880 nmi (14,590 km; 9,070 mi) @ 7 kn (surfaced) 83 nmi (154 km; 96 mi) @ 4 kn (submerged)
Complement: 32 men[2]
Armament: One 50 cm (20 in) torpedo tubes forward and one 50 cm torpedo tubes aft with two torpedoes[4]
plus one 8.8 cm (3.5 in) deck gun
two minelaying tubes for 38 mines[2]
Service record
Part of: Imperial German Navy
Commanders: Erich Günzel [1]
10 Mar 1916 - 7 Jul 1916
Operations: 2 patrols
29 Jun 1916 - 7 Jul 1916 I Flotilla

No successes.[1]

SM U-77 was one of 329 submarines serving in the Imperial German Navy in World War I, engaged in commerce warfare during the First Battle of the Atlantic.

Operations[]

U-77. Commanded by Kaptlt. Erich Günzel, lost with her. Came off the stocks at Hamburg (Vulcan) in 1916; in May and June was at Kiel School, and first entered North Sea with U-76 on 29 June, to join the 1st Half Flotilla.

Notes[]

  1. 1.0 1.1 Uboat.net U-77
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Encyclopedia of U-boats (2004), London:Greenhill Books, ISBN 1-85367-623-3, p.32
  3. 3.0 3.1 3.2 Type UE 1 UE ocean minelayers class
  4. Fitzsimons, Bernard. The Illustrated Encyclopedia of 20th Century Weapons and Warfare (London: Phoebus, 1978), Vol. 23, p.2536.
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