History
German Empire
NameU-4
Ordered13 August 1907[1]
BuilderKaiserliche Werft Danzig[1]
Cost1,629,000 Goldmark
Yard number3
Launched18 May 1909[1]
Commissioned1 July 1909[1]
Decommissioned27 January 1919
FateBroken up in 1919
General characteristics [2]
Class and typeGerman Type U 3 submarine
Displacement
  • 421 t (414 long tons) surfaced
  • 510 t (500 long tons) submerged
Length
Beam5.60 m (18 ft 4 in)
Draught3.05 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 depth30 m (98 ft 5 in)
Boats & landing
craft carried		1 dingi
Armament
Service record
Part of:
  • Training Flotilla
  • 1 August 1914 - 11 November 1918
Commanders: Friedrich Lützow
Operations: none
Victories: No ships sunk or damaged

SM U-4 was one of the 329 submarines serving in the Imperial German Navy in World War I. She was partially broken up in 1919 with her hull being sold on.[3]

References

  1. 1 2 3 4 Rössler 1985, 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. Vol. 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 (in German). Vol. I. Koblenz: Bernard & Graefe. ISBN 3-7637-5213-7. {{cite book}}: |work= ignored (help)
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