SM U-4 (Germany)

SM U-4 was one of the 329 submarines serving in the Imperial German Navy in World War I. U-4 engaged in the naval warfare and took part in the First Battle of the Atlantic.[3]

For other ships with the same name, see German submarine U-4.

History
German Empire
Name: U-4
Ordered: 13 August 1907[1]
Builder: Kaiserliche Werft Danzig[1]
Cost: 1,629,000 Goldmark
Yard number: DU 3
Launched: 18 May 1909[1]
Commissioned: 1 July 1909[1]
Decommissioned: 27 January 1919
Fate: Broken up in 1919
General characteristics [2]
Class and type: German Type U 3 submarine
Displacement:
  • 421 t (414 long tons) surfaced
  • 510 t (500 long tons) submerged
Length:
  • 51.28 m (168 ft 3 in) (o/a)
  • 45.00 m (147 ft 8 in) (pressure hull)
Beam: 5.60 m (18 ft 4 in)
Draught: 3.05 m (10 ft)
Propulsion:
Speed:
  • 11.8 knots (21.9 km/h; 13.6 mph) surfaced
  • 9.4 knots (17.4 km/h; 10.8 mph) submerged
Range:
  • 1,800 nmi (3,300 km; 2,100 mi) at 12 knots (22 km/h; 14 mph) surfaced
  • 50 nmi (93 km; 58 mi) at 4.5 knots (8.3 km/h; 5.2 mph) submerged
Test depth: 30 m (98 ft 5 in)
Boats & landing
craft carried:		 1 dingi
Armament:
Service record
Commanders: Friedrich Lützow

References
  1. Rössler, p. 15.
  2. Gröner 1991, pp. 4–6.
  3. Helgason, Guðmundur. "WWI U-boats: U 4". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 21 January 2010.

Bibliography
  • Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.
  • Rössler, Eberhard (1985). U-Bootbau bis Ende des 1. Weltkriegs, Konstruktionen für das Ausland und die Jahre 1935-1945. Die deutschen U-Boote und ihre Werften (in German). I. Koblenz: Bernard & Graefe. ISBN 3-7637-5213-7.CS1 maint: ref=harv (link)
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