SM U-7 (Germany)
For other ships of the same name, see German submarine U-7.
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| 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 and 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 and 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] |
| Service record | |
|---|---|
| Part of: |
I Flotilla 1 Aug 1914 – 21 Jan 1915 |
| Commanders: |
Kptlt Georg König[3] 1 Aug 1914 – 21 Jan 1915 |
| Operations: | 3 patrols |
| Victories: | None |
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
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
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Gröner 1985, p. 27.
- ↑ 2.0 2.1 2.2 2.3 Gröner 1985, p. 28.
- ↑ "Georg König". Uboat.net. Retrieved 13 March 2015.
References
- 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
- Photos of cruises of German submarine U-54 in 1916-1918.
- A 44 min. German film from 1917 about a cruise of the German submarine U-35.
- Uboat.net: More detailed information about U-7.
- Room 40: original documents, photos and maps about World War I German submarine warfare and British Room 40 Intelligence from The National Archives, Kew, Richmond, UK.
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