SM UC-4

History
German Empire
NameUC-4
OrderedNovember 1914
BuilderAG Vulcan, Hamburg
Yard number48
Launched6 June 1915
Commissioned10 June 1915
FateScuttled off Flanders, 5 October 1918
General characteristics
Class & typeType UC I submarine
Displacement
  • 168 t (165 long tons), surfaced
  • 183 t (180 long tons), submerged
Length
Beam3.15 m (10 ft 4 in)
Draft3.04 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 depth50 m (160 ft)
Complement14
Armament
  • 6 × 100 cm (39 in) mine tubes
  • 12 × UC 120 mines
  • 1 × 8 mm (0.31 in) machine gun
Service record
Part of:
  • Baltic Flotilla
  • 11 July 1915 – 4 February 1916
  • Flandern Flotilla
  • 4 February – 19 March 1916
  • Baltic Flotilla
  • 19 March – 30 September 1916
  • Flandern / Flandern I 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
  • 20 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 May 1917
  • Oblt.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)
  • 1 warship sunk
    (6,136 tons)
  • 14 auxiliary warships sunk
    (5,134 GRT)
  • 2 merchant ships damaged
    (9,441 GRT)

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.