SM UC-79

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History
War Ensign of Germany 1903-1918.svg German Empire
NameUC-79
Ordered12 January 1916 [1]
Builder AG Vulcan, Hamburg [2]
Yard number84 [1]
Launched19 December 1916 [1]
Commissioned22 January 1917 [1]
FateSunk by mine off Cap Gris Nez, March – April 1918 [1]
General characteristics [3]
Class and type German Type UC II submarine
Displacement
  • 410 t (400 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
Draught3.65 m (12 ft)
Propulsion
Speed
  • 11.8 knots (21.9 km/h; 13.6 mph), surfaced
  • 7.3 knots (13.5 km/h; 8.4 mph), submerged
Range
  • 8,660–10,230  nmi (16,040–18,950 km; 9,970–11,770 mi) at 7 knots (13 km/h; 8.1 mph) surfaced
  • 52 nmi (96 km; 60 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth50 m (160 ft)
Complement26
Armament
Notes30-second diving time
Service record
Part of:
  • Baltic Flotilla
  • 1 April – 7 August 1917
  • Flandern / Flandern I Flotilla
  • 7 August 1917 – 5 April 1918
Commanders:
  • Kptlt. Erich Haecker [4]
  • 22 January – 23 September 1917
  • Oblt.z.S. Werner Löwe [5]
  • 24 September 1917 – 6 February 1918
  • Oblt.z.S. Alfred Krameyer [6]
  • 7 February – 5 April 1918
Operations: 11 patrols
Victories:
  • 6 merchant ships sunk
    (11,163  GRT)
  • 4 auxiliary warships sunk
    (1,078  GRT)
  • 14 merchant ships taken as prize
    (10,961  GRT)

SM UC-79 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy (German : Kaiserliche Marine) during World War I.

Contents

Design

A German Type UC II submarine, UC-79 had a displacement of 410 tonnes (400 long tons) when at the surface and 493 tonnes (485 long tons) while submerged. She had a length overall of 50.45 m (165 ft 6 in), a beam of 5.22 m (17 ft 2 in), and a draught of 3.65 m (12 ft). The submarine was powered by two six-cylinder four-stroke diesel engines each producing 290–300 metric horsepower (210–220 kW; 290–300 shp) (a total of 580–600 metric horsepower (430–440 kW; 570–590 shp)), two electric motors producing 620 metric horsepower (460 kW; 610 shp), and two propeller shafts. She had a dive time of 30 seconds and was capable of operating at a depth of 50 metres (160 ft). [3]

The submarine had a maximum surface speed of 11.8 knots (21.9 km/h; 13.6 mph) and a submerged speed of 7.3 knots (13.5 km/h; 8.4 mph). When submerged, she could operate for 52 nautical miles (96 km; 60 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,660 to 10,230 nautical miles (16,040 to 18,950 km; 9,970 to 11,770 mi) at 7 knots (13 km/h; 8.1 mph). UC-79 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 cm (3.5 in) Uk L/30 deck gun. Her complement was twenty-six crew members. [3]

History

UC-79 was ordered on 12 January 1916 and was launched on 19 December 1916. She was commissioned into the Imperial German Navy on 22 January 1917 as SM UC-79. [Note 1] In eleven patrols UC-79 was credited with sinking 10 ships, either by torpedo or by mines laid. [1] On 28 April 1917, she captured the Danish coaster Laura in the Skagerrak. [7] UC-79 was sunk by a mine off Cap Gris Nez, France in late March or early April 1918. Royal Navy divers located the wreck in that area in August 1918. [1]

Summary of raiding history

DateNameNationalityTonnage [Note 2] Fate [8]
23 April 1917 Ydun Flag of Denmark.svg  Denmark 645Captured as prize
24 April 1917 Harald Haarfager Flag of Norway.svg  Norway 475Captured as prize
28 April 1917 Laura Flag of Denmark.svg  Denmark 787Captured as prize
28 April 1917 Storebelt Flag of Denmark.svg  Denmark 599Captured as prize
15 May 1917 Ellen Flag of Denmark.svg  Denmark 786Captured as prize
16 May 1917 Thorunn Flag of Norway.svg  Norway 990Captured as prize
17 May 1917 Alexander Shukoff Flag of Denmark.svg  Denmark 1,652Captured as prize
18 May 1917 Magnus Flag of Denmark.svg  Denmark 1,297Captured as prize
20 May 1917 Otto Flag of Denmark.svg  Denmark 152Captured as prize
20 May 1917 Pomona Flag of the Netherlands.svg  Netherlands 789Captured as prize
6 July 1917 Rhone Flag of Denmark.svg  Denmark 1,050Captured as prize
8 July 1917 Eos Flag of Denmark.svg  Denmark 838Captured as prize
8 July 1917 Nyhamn Flag of Sweden.svg  Sweden 302Captured as prize
8 July 1917 Storebelt Flag of Denmark.svg  Denmark 599Captured as prize
13 August 1917 Emilie Galline Flag of France.svg  France 1,944Sunk
15 October 1917 Garthclyde Civil Ensign of the United Kingdom.svg  United Kingdom 2,124Sunk
17 October 1917 HMT Ruby Naval Ensign of the United Kingdom.svg  Royal Navy 251Sunk
19 October 1917 Renard Civil and Naval Ensign of France.svg  French Navy 285Sunk
19 October 1917 Cupica Dominion of Newfoundland Red Ensign.svg  Newfoundland 1,240Sunk
21 October 1917 Tom Roper Civil Ensign of the United Kingdom.svg  United Kingdom 120Sunk
19 November 1917 Jutland Civil Ensign of the United Kingdom.svg  United Kingdom 2,824Sunk
24 November 1917 Pomone Flag of France.svg  France 2,911Sunk
31 January 1918 Elephant Civil and Naval Ensign of France.svg  French Navy 286Sunk
2 February 1918 HMT Remindo Naval Ensign of the United Kingdom.svg  Royal Navy 256Sunk

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SM <i>UC-21</i> German Type UC II minelaying submarine

SM UC-21 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy during World War I. The U-boat was ordered on 29 August 1915 and was launched on 1 April 1916. She was commissioned into the German Imperial Navy on 12 September 1916 as SM UC-21.

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SM UC-23 was a German Type UC II minelaying submarine or U-boat in the German Imperial Navy during World War I. The U-boat was ordered on 29 August 1915 and was launched on 29 February 1916. She was commissioned into the German Imperial Navy on 17 July 1916 as SM UC-23. In 17 patrols UC-23 was credited with sinking 46 ships, either by torpedo or by mines laid. UC-23 was surrendered at Sevastopol on 25 November 1918 and broken up at Bizerta in August 1921.

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References

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.
  2. ↑ Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.

Citations

  1. 1 2 3 4 5 6 7 Helgason, Guðmundur. "WWI U-boats: UC 79". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 23 February 2009.
  2. ↑ Tarrant, p. 173.
  3. 1 2 3 Gröner 1991, pp. 31–32.
  4. ↑ Helgason, Guðmundur. "WWI U-boat commanders: Erich Haecker". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 March 2015.
  5. ↑ Helgason, Guðmundur. "WWI U-boat commanders: Werner Löwe". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 March 2015.
  6. ↑ Helgason, Guðmundur. "WWI U-boat commanders: Alfred Krameyer". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 March 2015.
  7. ↑ Helgason, Guðmundur. "Ships hit during WWI: Laura". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 26 September 2010.
  8. ↑ Helgason, Guðmundur. "Ships hit by UC 79". 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.
  • 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.
  • Gardiner, Robert; Gray, Randal, eds. (1985). Conway's All the World's Fighting Ships 1906–1921. Annapolis, Maryland: Naval Institute Press. ISBN   978-0-87021-907-8. OCLC   12119866.
  • 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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