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SMU-18

Coordinates:58°41′N02°55′W / 58.683°N 2.917°W /58.683; -2.917
From Wikipedia, the free encyclopedia
German World War I submarine
For other ships with the same name, seeGerman submarine U-18.
SMU-18 (second row, second from the right)
History
Germany
NameU-18
OrderedMay 6, 1910
BuilderKaiserliche Werft Danzig
Cost2,333,000Goldmark
Yard number12
Laid down27 October 1910
Launched25 April 1912
Commissioned17 November 1912
Fate
  • Scuttled - 23 November 1914
  • 1 dead
General characteristics
Class and typeGerman Type U 17 submarine
Displacement
  • 564 t (555long tons) surfaced
  • 691 t (680 long tons) submerged
Length62.35 m (204 ft 7 in)
Beam6 m (19 ft 8 in)
Height7.30 m (23 ft 11 in)
Draught3.40 m (11 ft 2 in)
Propulsion
  • 2 shafts
  • 2 × 2Körting 8-cylinder two strokeparaffin motors with 1,400 PS (1,030 kW; 1,380 shp)
  • 2 × AEG electric motors with 1,120 PS (820 kW; 1,100 shp)
  • 550 rpm surfaced
  • 425 rpm submerged
Speed
  • 14.9 knots (27.6 km/h; 17.1 mph) surfaced
  • 9.5 knots (17.6 km/h; 10.9 mph) submerged
Range
  • 6,700 nmi (12,400 km; 7,700 mi) at 8 kn surfaced
  • 75 nmi (139 km; 86 mi) at 5 kn submerged
Test depth50 m (164 ft 1 in)
Boats & landing
craft carried		1 dingi
Complement4 officers, 25 men
Armament4 × 45 cm (17.7 in)torpedo tubes (2 eachbow andstern) with 6torpedoes
Service record
Part of:
  • II Flotilla
  • 1 August – 23 November 1914
Commanders:
  • Kptlt. Heinrich von Henning[1]
  • 1 August – 23 November 1914
Operations:3 patrols
Victories:None

SMU-18[Note 1] was one of 329submarines serving in theImperial German Navy inWorld War I.U-18 engaged in thecommerce warfare in theFirst Battle of the Atlantic.

Service history

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Beginning in October 1914, she was commanded byKaptlt. von Hennig.[2]

On her third mission, on 23 NovemberU-18 penetrated the fleet anchorage ofScapa Flow via Hoxa Sound, following a steamer through the boom and entering the anchorage with little difficulty. However, the fleet was absent, being dispersed in anchorages on the west coast of Scotland and Ireland. AsU-18 was making her way back out through Hoxa Sound to the open sea, her periscope was spotted by a guard boat. The trawlerDorothy Gray altered course and rammed the periscope, rendering it unserviceable.U-18 then suffered a failure of her diving plane motor and the boat became unable to maintain her depth, at one point even impacting the seabed. She was rammed a second time by destroyerHMS Garry and eventually, her captain was forced to surface and scuttle his command just outside the Hoxa Gate; all crew members, except one, were picked up by British boats.[3][4] One crew member perished, while the remaining 22 were interned as prisoners of war.[5]

The wreck lies 75 m (246 ft) below the surface just outside the Hoxa Gate, at58°41′N02°55′W / 58.683°N 2.917°W /58.683; -2.917.[6]

References

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Notes

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  1. ^"SM" stands for "Seiner Majestät" (English:His Majesty's) and combined with theU forUnterseeboot would be translated asHis Majesty's Submarine.

Citations

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  1. ^Helgason, Guðmundur."WWI U-boat commanders: Heinrich von Henning".German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved22 December 2014.
  2. ^Koerver, Hans Joachim (2008).Room 40: German Naval Warfare 1914-1918.
  3. ^Messimer, Dwight R. (2002).Verschollen: World War I U-boat Losses. Naval Institute Press. pp. 36–40.ISBN 9781557504753.
  4. ^Koerver.
  5. ^Helgason, Guðmundur."WWI U-boats: U 18".German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net.
  6. ^Willmott, H.P. (2009).The Last Century of Sea Power: From Port Arthur to Chanak, 1894-1922. Indiana University Press. p. 376.ISBN 9780253352149.

Bibliography

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  • 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.
  • Spindler, Arno (1966) [1932].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.
  • Beesly, Patrick (1982).Room 40: British Naval Intelligence 1914-1918. London: H Hamilton.ISBN 978-0241108642.
  • Halpern, Paul G. (1918).A Naval History of World War I. New York: Routledge.ISBN 978-1857284980.
  • Roessler, Eberhard (1997).Die Unterseeboote der Kaiserlichen Marine. Bonn: Bernard & Graefe.ISBN 978-3763759637.
  • Schroeder, Joachim (2002).Die U-Boote des Kaisers. Bonn: Bernard & Graefe.ISBN 978-3763762354.
  • 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.
  • Kemp, Paul (1997).U-boats destroyed, German submarine losses in the World Wars. London: Arms & Armour Press. p. 9.ISBN 1-85409-321-5.

External links

[edit]
Shipwrecks and maritime incidents in November 1914
Shipwrecks
Other incidents
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