SM U-99

History
German Empire
NameU-99
Ordered15 September 1915
BuilderAG Weser, Bremen
Yard number250
Laid down30 November 1915
Launched27 January 1917
Commissioned28 March 1917
FateMissing after 7 July 1917
General characteristics
Class & typeGerman Type U 57 submarine
Displacement
  • 750 t (740 long tons) surfaced
  • 952 t (937 long tons) submerged
Length
Beam
  • 6.32 m (20 ft 9 in) (o/a)
  • 4.05 m (13 ft 3 in) (pressure hull)
Height8.25 m (27 ft 1 in)
Draught3.65 m (12 ft)
Installed power
  • 2 × 2,400 PS (1,765 kW; 2,367 shp) surfaced
  • 2 × 1,200 PS (883 kW; 1,184 shp) submerged
Propulsion2 shafts, 2 × 1.65 m (5 ft 5 in) propellers
Speed
  • 16.5 knots (30.6 km/h; 19.0 mph) surfaced
  • 8.8 knots (16.3 km/h; 10.1 mph) submerged
Range
  • 10,100 nmi (18,700 km; 11,600 mi) at 8 knots (15 km/h; 9.2 mph) surfaced
  • 45 nmi (83 km; 52 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged
Test depth50 m (160 ft)
Complement4 officers, 32 enlisted
Armament
Service record
Part of:
  • II Flotilla
  • 7 June – 7 July 1917
Commanders:
  • Kptlt. Max Eltester
  • 28 March – 7 July 1917
Operations: 1 patrol
Victories: None

SM U-99 was one of the 329 submarines serving in the Imperial German Navy in World War I.

U-99 was engaged in the naval warfare and took part in the First Battle of the Atlantic.

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