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SM UC-4

History
German Empire
Name: UC-4
Ordered: by November 1914
Builder: AG Vulcan, Hamburg
Yard number: 48
Launched: 6 June 1915
Commissioned: 10 June 1915
Fate: scuttled off Flanders, 5 October 1918
General characteristics
Class and type: German Type UC I submarine
Displacement:
  • 168 t (165 long tons), surfaced
  • 183 t (180 long tons), submerged
Length:
Beam: 3.15 m (10 ft 4 in)
Draft: 3.04 m (10 ft)
Propulsion:
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:
  • Imperial German Navy:
  • Baltic Flotilla
  • 11 July 1915 – 4 February 1916
  • Flandern Flotilla
  • 4 February – 19 March 1916
  • Baltic Flotilla
  • 19 March – 30 September 1916
  • Flandern Flotilla
  • 30 September 1916 – 2 October 1918
Commanders:
  • Oblt.z.S. Karl Vesper
  • 10 June – 28 December 1915
  • Oblt.z.S. Friedrich Moecke
  • 29 December 1915 – 19 March 1916
  • Oblt.z.S. Max Hamm
  • 19 March – 15 August 1916
  • Oblt.z.S. Ulrich Pilzecker
  • 16 August – 14 September 1916
  • Oblt.z.S. Gustav Buch
  • 15 September – 20 October 1916
  • Oblt.z.S. Hans Howaldt
  • 21 October – 26 November 1916
  • Oblt.z.S. Georg Reimarus
  • 27 November 1916 – 11 March 1917
  • Lt.z.S. Oskar Steckelberg
  • 12–20 May 1917
  • Oblt.z.S. Georg Reimarus
  • 21–29 May 1917
  • Oblt.z.S. Erich Hecht
  • 30 May – 12 September 1917
  • Oblt.z.S. Walter Schmitz
  • 13 September 1917 – 19 January 1918
  • Oblt.z.S. Kurt Loch
  • 20 January – 26 February 1918
  • Oblt.z.S. Ernst Berlin
  • 27 February – 21 April 1918
  • Oblt.z.S. Eberhard Schmidt
  • 22 April – 2 October 1918
Operations: 73 patrols
Victories:
  • 21 merchant ships sunk (33,518 GRT)
  • 2 merchant ships damaged (9,441 GRT)
  • 15 warships sunk (11,270 tons)

SM UC-4 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 6 June 1915. She was commissioned into the German Imperial Navy on 10 June 1915 as SM UC-4.Mines laid by UC-4 in her 73 patrols were credited with sinking 36 ships. UC-4 was scuttled off the coast of Flanders during the German evacuation on 5 October 1918.

A German Type UC I submarine, UC-4 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).

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-4 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.


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