SM U-7 (Germany)

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For other ships of the same name, see German submarine U-7.
Submarine U-7 at full speed (LOC) (6358166669).jpg
Career (German Empire)
Name: U-7
Ordered: 8 April 1908
Builder: Germaniawerft, Kiel
Cost: 2,540,000 Goldmark
Yard number: 149
Laid down: 6 May 1909
Launched: 28 July 1910
Commissioned: 18 July 1911
Fate: Sunk by U-22 in a friendly fire incident, 26 dead.
General characteristics
Class & type: German Type U 5 submarine
Displacement: 505 tonnes (497 long tons) surfaced
636 tonnes (626 long tons) submerged[1]
Length: 57.3 m (188 ft 0 in) (o/a)
43.1 m (141 ft 5 in) (pressure hull)[1]
Beam: 5.6 m (18 ft 4 in) (o/a)
3.75 m (12 ft 4 in) (pressure hull)[1]
Draught: 3.55 m (11 ft 8 in)[1]
Installed power: 2 × Körting 6-cylinder and 2 × Körting 8-cylinder two stroke paraffin motors with 900 PS (890 hp)
2 × SSW electric motors with 1,040 PS (1,030 hp)
550 rpm surfaced
600 rpm submerged[2]
Propulsion: 2 shafts
2 × 1.3 metres (4 ft 3 in) propellers
Speed: 13.4 knots (24.8 km/h; 15.4 mph) surfaced
10.2 knots (18.9 km/h; 11.7 mph) submerged[1]
Range: 3,300 nmi (6,100 km; 3,800 mi) at 9 knots (17 km/h; 10 mph)[1]
Test depth: 30 m (98 ft)[2]
Boats & landing
craft carried:
1 dingi
Complement: 4 officers, 24 men[2]
Armament: 4 × 45 cm (17.7 in) torpedo tubes (2 each bow and stern) with 6 torpedoes
1 × 3.7 cm (1.5 in) Hotchkiss gun [2]

SM U-7 was a Type U 5 U-boat, one of the 329 that served in the Imperial German Navy in World War I. U-7 was engaged in the naval warfare and took part in the First Battle of the Atlantic.

Fate[edit]

On 21 January 1915, U-7 was torpedoed and sunk by SM U-22, which had mistaken her for an enemy submarine. Twenty-four crew were killed, and only one survived.

Notes[edit]

  1. ^ a b c d e f Gröner 1985, p. 27.
  2. ^ a b c d Gröner 1985, p. 28.

References[edit]

  • Spindler, Arno (1932,1933,1934,1941/1964,1966). Der Handelskrieg mit U-Booten. 5 Vols. Berlin: Mittler & Sohn. Vols. 4+5, dealing with 1917+18, are very hard to find: Guildhall Library, London, has them all, also Vol. 1-3 in an English translation: The submarine war against commerce.  Check date values in: |date= (help)
  • Beesly, Patrick (1982). Room 40: British Naval Intelligence 1914-1918. London: H Hamilton. ISBN 978-0-241-10864-2. 
  • Halpern, Paul G. (1995). A Naval History of World War I. New York: Routledge. ISBN 978-1-85728-498-0. 
  • Roessler, Eberhard (1997). Die Unterseeboote der Kaiserlichen Marine. Bonn: Bernard & Graefe. ISBN 978-3-7637-5963-7. 
  • Schroeder, Joachim (2002). Die U-Boote des Kaisers. Bonn: Bernard & Graefe. ISBN 978-3-7637-6235-4. 
  • Koerver, Hans Joachim (2008). Room 40: German Naval Warfare 1914-1918. Vol I., The Fleet in Action. Steinbach: LIS Reinisch. ISBN 978-3-902433-76-3. 
  • Koerver, Hans Joachim (2009). Room 40: German Naval Warfare 1914-1918. Vol II., The Fleet in Being. Steinbach: LIS Reinisch. ISBN 978-3-902433-77-0. 
  • Gröner, Erich (1985). U-Boote, Hilfskreuzer, Minenschiffe, Netzleger, Sperrbrecher. Die deutschen Kriegsschiffe 1815-1945 (in German) III (Koblenz: Bernard & Graefe). ISBN 3-7637-4802-4. 
  • 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. 

External links[edit]

Coordinates: 53°25′48″N 6°02′00″E / 53.43000°N 6.03333°E / 53.43000; 6.03333