Military Wiki
SM U-84
Career (German Empire)
Name: U-84
Ordered: 23 June 1915
Builder: Germaniawerft, Kiel
Yard number: Werk 254
Laid down: 25 October 1915
Launched: 22 July 1916
Commissioned: 7 October 1916
Fate: 26 January 1918 - Possibly rammed and depth charged by PC62 in St George's Channel and sunk at 51°53′N 5°44′W / 51.883°N 5.733°W / 51.883; -5.733Coordinates: 51°53′N 5°44′W / 51.883°N 5.733°W / 51.883; -5.733. 40 dead (all hands lost).[1]
General characteristics
Class & type: German Type U 81 submarine
Displacement: 808 tons (surfaced)
946 tons (submerged)
1160 tons (total)
Length: 70.06 m (overall)
55.55 m (pressure hull)
Beam: 6.30 m (overall)
4.15 m (pressure hull)
Draught: 4.02 m
Propulsion: 2400 hp (surfaced)
1200 hp (submerged)
Speed: 16.8 knots (surfaced)
9.1 knots (submerged)
Range: 11,220 miles @ 8 knots (surfaced) 56 miles @ 5 knots(submerged)
Complement: 39 men
Armament: 12 torpedoes (4/2 in bow/stern tubes)
105mm deck gun with 140 rounds [2]
Service record
Part of: Imperial German Navy
Commanders: Walter Roehr [1]
17 Oct 1916 - 26 Jan 1918
Operations:

8 patrols
3 Dec 1916 - 26 Jan 1918 IV Flotilla

28 ships sunk for a total of 83,127 tons. 7 ships damaged for a total of 42,149 tons.

2 ships taken as prize for a total of 3,462 tons.

SM U-84 was one of the 329 submarines serving in the Imperial German Navy (Kaiserliche Marine) in World War I. U-84 was engaged in the naval warfare and took part in the First Battle of the Atlantic.[3]

Initially U 81 to U 83 had one 10.5 cm gun with 140-240 rounds. U 84 - U 86 on the other hand had two 8.8 cm guns. In 1917 U 84 - U 86 were refitted with a single 10.5 cm gun (240 rounds)[1]

References[]

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