SM UC-24

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History
German Empire
Name: UC-24
Ordered: 26 August 1915[1]
Builder: Blohm & Voss, Hamburg[2]
Yard number: 274[1]
Launched: 4 March 1916[1]
Commissioned: 15 August 1916[1]
Fate: torpedoed and sunk by French submarine Circé on 24 May 1917[1]
General characteristics [3]
Class & type: German Type UC II submarine
Displacement:
  • 417 t (410 long tons), surfaced
  • 493 t (485 long tons), submerged
Length:
Beam:
  • 5.22 m (17 ft 2 in) o/a
  • 3.65 m (12 ft) pressure hull
Draught: 3.68 m (12 ft 1 in)
Propulsion:
Speed:
  • 11.6 knots (21.5 km/h; 13.3 mph), surfaced
  • 7.0 knots (13.0 km/h; 8.1 mph), submerged
Range:
  • 9,430 nmi (17,460 km; 10,850 mi) at 7 knots (13 km/h; 8.1 mph) surfaced
  • 55 nmi (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth: 50 m (160 ft)
Complement: 26
Armament:
  • 6 × 100 cm (39.4 in) mine tubes
  • 18 × UC 200 mines
  • 3 × 50 cm (19.7 in) torpedo tubes (2 bow/external; one stern)
  • 7 × torpedoes
  • 1 × 8.8 cm (3.46 in) Uk L/30 deck gun
Notes: 35-second diving time
Service record
Part of:
  • I Flotilla
  • 13 November 1916 – 21 February 1917
  • Pola Flotilla
  • 21 February 1917 – 24 May 1917
Commanders:
  • Kptlt. Kurt Willich[4]
  • 17 August 1916 – 24 May 1917
Operations: 4 patrols
Victories: 4 merchant ships sunk (9,815 GRT)

SM UC-24[Note 1] was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 26 August 1915 and was launched on 4 March 1916. She was commissioned into the German Imperial Navy on 15 August 1916 as SM UC-24. In four patrols UC-24 was credited with sinking 4 ships, either by torpedo or by mines laid. UC-24 was torpedoed and sunk by French submarine Circé off Cattaro on 24 May 1917.[1]

Design

Like all pre-UC-25 German Type UC II submarines, UC-24 had a displacement of 417 tonnes (410 long tons) when at the surface and 493 tonnes (485 long tons) while submerged. She had a length overall of 49.35 m (161 ft 11 in), a beam of 5.22 m (17 ft 2 in), and a draught of 3.65 m (12 ft 0 in). The submarine was powered by two six-cylinder four-stroke diesel engines each producing 250 metric horsepower (180 kW; 250 shp) (a total of 500 metric horsepower (370 kW; 490 shp)), two electric motors producing 460 metric horsepower (340 kW; 450 shp), and two propeller shafts. She had a dive time of 35 seconds and was capable of operating at a depth of 50 metres (160 ft).[3]

The submarine had a maximum surface speed of 11.6 knots (21.5 km/h; 13.3 mph) and a submerged speed of 7 knots (13 km/h; 8.1 mph). When submerged, she could operate for 55 nautical miles (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 9,430 nautical miles (17,460 km; 10,850 mi) at 7 knots (13 km/h; 8.1 mph). UC-24 was fitted with six 100 centimetres (39 in) mine tubes, eighteen UC 200 mines, three 50 centimetres (20 in) torpedo tubes (one on the stern and two on the bow), seven torpedoes, and one 8.8 centimetres (3.5 in) Uk L/30 deck gun. Her complement was twenty-six crew members.[3]

Summary of raiding history

Date Name Nationality Tonnage[Note 2] Fate[5]
4 February 1917 Solbakken  Norway 2,616 Sunk
6 February 1917 Ellavore  Norway 2,733 Sunk
6 February 1917 Havgard  Norway 1,279 Sunk
11 July 1917 Siracusa  Kingdom of Italy 3,187 Sunk

References

Notes

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Citations

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Bibliography

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  2. Tarrant, p. 173.
  3. 3.0 3.1 3.2 Gröner 1991, pp. 31-32.
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