SM UC-9

SM UC-9 was a German Type UC I minelayer submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat had been ordered by November 1914 and was launched on 11 July 1915. She was commissioned into the German Imperial Navy on 15 July 1915 as SM UC-9.[Note 1] Mines laid by UC-9 in her two patrols were not credited with sinking any ships. UC-9 was lost 21 October 1915 to one of its own mines.

For other ships with the same name, see German submarine U-9.
History
German Empire
Name: UC-9
Ordered: by November 1914[1]
Builder: AG Vulcan, Hamburg[2]
Yard number: 53[1]
Launched: 11 July 1915[1]
Commissioned: 15 July 1915[1]
Fate: Sunk by its own mine 21 October 1915
General characteristics [3]
Class and type: German Type UC I submarine
Displacement:
  • 168 t (165 long tons), surfaced
  • 183 t (180 long tons), submerged
Length:
  • 33.99 m (111 ft 6 in) o/a
  • 29.62 m (97 ft 2 in) pressure hull
Beam: 3.15 m (10 ft 4 in)
Draft: 3.04 m (10 ft)
Propulsion:
  • 1 × propeller shaft
  • 1 × 6-cylinder, 4-stroke diesel engine, 90 PS (66 kW; 89 bhp)
  • 1 × electric motor, 175 PS (129 kW; 173 shp)
Speed:
  • 6.20 knots (11.48 km/h; 7.13 mph), surfaced
  • 5.22 knots (9.67 km/h; 6.01 mph), submerged
Range:
  • 780 nmi (1,440 km; 900 mi) at 5 knots (9.3 km/h; 5.8 mph) surfaced
  • 50 nmi (93 km; 58 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth: 50 m (160 ft)
Complement: 14
Armament:
  • 6 × 100 cm (39 in) mine tubes
  • 12 × UC 120 mines
  • 1 × 8 mm (0.31 in) machine gun
Service record
Part of:
  • Training Flotilla
  • 15 July 1915 – 23 September 1915
  • Flandern Flotilla
  • 23 September 1915 – 31 October 1915
Commanders:
  • Oblt.z.S. Paul Schürmann[4]
  • 15 July – 31 October 1915
Operations: No patrols
Victories: None

Design

A German Type UC I submarine, UC-9 had a displacement of 168 tonnes (165 long tons) when at the surface and 183 tonnes (180 long tons) while submerged. She had a length overall of 33.99 m (111 ft 6 in), a beam of 3.15 m (10 ft 4 in), and a draught of 3.04 m (10 ft). The submarine was powered by one Daimler-Motoren-Gesellschaft six-cylinder, four-stroke diesel engine producing 90 metric horsepower (66 kW; 89 shp), an electric motor producing 175 metric horsepower (129 kW; 173 shp), and one propeller shaft. She was capable of operating at a depth of 50 metres (160 ft).[3]

The submarine had a maximum surface speed of 6.20 knots (11.48 km/h; 7.13 mph) and a maximum submerged speed of 5.22 knots (9.67 km/h; 6.01 mph). When submerged, she could operate for 50 nautical miles (93 km; 58 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 780 nautical miles (1,440 km; 900 mi) at 5 knots (9.3 km/h; 5.8 mph). UC-9 was fitted with six 100 centimetres (39 in) mine tubes, twelve UC 120 mines, and one 8 millimetres (0.31 in) machine gun. She was built by AG Vulcan Stettin and her complement was fourteen crew members.[3]

Notes
  1. "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.
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References
  1. Helgason, Guðmundur. "WWI U-boats: UC 9". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 20 February 2009.
  2. Tarrant, p. 173.
  3. Gröner 1991, pp. 30-31.
  4. Helgason, Guðmundur. "WWI U-boat commanders: Paul Schürmann". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 March 2015.

Bibliography
  • Bendert, Harald (2001). Die UC-Boote der Kaiserlichen Marine 1914-1918. Minenkrieg mit U-Booten (in German). Hamburg, Berlin, Bonn: Mittler. ISBN 3-8132-0758-7.CS1 maint: ref=harv (link)
  • 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.
  • Gardiner, Robert, ed. (1985). Conway's All the World's Fighting Ships, 1906–1921. Annapolis, Maryland: Naval Institute Press. ISBN 978-0-87021-907-8. OCLC 12119866.CS1 maint: extra text: authors list (link)
  • Tarrant, V. E. (1989). The U-Boat Offensive: 1914–1945. Annapolis, Maryland: Naval Institute Press. ISBN 978-0-87021-764-7. OCLC 20338385.

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