SM UC-71
SM UC-71 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 12 January 1916 and was launched on 12 August 1916. She was commissioned into the German Imperial Navy on 28 November 1916 as SM UC-71.[Note 1] In 19 patrols UC-71 was credited with sinking 61 ships, either by torpedo or by mines laid. UC-71 sank on 20 February 1919 in the North Sea while on her way to be surrendered.[1]
| History | |
|---|---|
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| Name: | UC-71 |
| Ordered: | 12 January 1916[1] |
| Builder: | Blohm & Voss, Hamburg[2] |
| Yard number: | 287[1] |
| Launched: | 12 August 1916[1] |
| Commissioned: | 28 November 1916[1] |
| Fate: | sunk on way to surrender, February 1919[1] |
| General characteristics [3] | |
| Class and type: | German Type UC II submarine |
| Displacement: |
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| Length: |
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| Beam: |
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| Draught: | 3.64 m (11 ft 11 in) |
| Propulsion: |
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| Speed: |
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| Range: |
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| Test depth: | 50 m (160 ft) |
| Complement: | 26 |
| Armament: |
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| Notes: | 35-second diving time |
| Service record[1] | |
| Part of: |
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| Commanders: |
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| Operations: | 19 patrols |
| Victories: |
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Design
A German Type UC II submarine, UC-71 had a displacement of 427 tonnes (420 long tons) when at the surface and 508 tonnes (500 long tons) while submerged. She had a length overall of 50.35 m (165 ft 2 in), a beam of 5.22 m (17 ft 2 in), and a draught of 3.64 m (11 ft 11 in). The submarine was powered by two six-cylinder four-stroke diesel engines each producing 300 metric horsepower (220 kW; 300 shp) (a total of 600 metric horsepower (440 kW; 590 shp)), two electric motors producing 620 metric horsepower (460 kW; 610 shp), and two propeller shafts. She had a dive time of 48 seconds and was capable of operating at a depth of 50 metres (160 ft).[3]
The submarine had a maximum surface speed of 12 knots (22 km/h; 14 mph) and a submerged speed of 7.4 knots (13.7 km/h; 8.5 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 10,420 nautical miles (19,300 km; 11,990 mi) at 7 knots (13 km/h; 8.1 mph). UC-71 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]
Summary of raiding history
| Date | Name | Nationality | Tonnage[Note 2] | Fate[10] |
|---|---|---|---|---|
| 30 March 1917 | Edernian |  |
3,588 | Damaged |
| 30 March 1917 | Saint Louis III |  |
97 | Sunk |
| 30 March 1917 | Sarcelle | |
49 | Sunk |
| 31 March 1917 | Primrose | |
113 | Sunk |
| 3 April 1917 | Ellen James | |
165 | Sunk |
| 4 April 1917 | Pensiero | _crowned.svg.png){kind=small} |
2,632 | Sunk |
| 5 April 1917 | Gower Coast | |
804 | Sunk |
| 5 April 1917 | San Fulgencio |  |
1,558 | Sunk |
| 7 April 1917 | Caminha |  |
2,763 | Sunk |
| 9 April 1917 | Themistoclis | .svg.png){kind=small} |
1,895 | Sunk |
| 9 April 1917 | Valhall |  |
750 | Sunk |
| 10 April 1917 | Ranvik | |
5,848 | Sunk |
| 12 April 1917 | Edelweiss | |
192 | Sunk |
| 18 April 1917 | Heim | |
1,669 | Sunk |
| 23 April 1917 | Cenobic | .svg.png){kind=small} |
16 | Sunk |
| 2 May 1917 | Westland |  |
108 | Sunk |
| 5 May 1917 | Simon | |
150 | Sunk |
| 15 May 1917 | Boreas | |
192 | Sunk |
| 16 May 1917 | Hendrika Johana | |
134 | Sunk |
| 17 May 1917 | Jakoba | |
107 | Sunk |
| 17 May 1917 | Mercurius | |
80 | Sunk |
| 18 May 1917 | Annetta | |
177 | Sunk |
| 14 June 1917 | Wega | |
839 | Sunk |
| 15 June 1917 | Wapello | |
5,576 | Sunk |
| 26 June 1917 | Normandy | |
543 | Damaged |
| 28 June 1917 | Marne | |
4,019 | Sunk |
| 29 June 1917 | Driskos | |
2,833 | Sunk |
| 3 July 1917 | Orleans | .svg.png){kind=small} |
2,853 | Sunk |
| 4 July 1917 | Snetoppen | |
2,349 | Sunk |
| 6 July 1917 | Løvstakken | |
3,105 | Sunk |
| 6 July 1917 | Victoria 2 | |
2,798 | Sunk |
| 8 July 1917 | Vendee | |
1,295 | Sunk |
| 3 August 1917 | Aube | |
1,837 | Sunk |
| 4 August 1917 | Afrique | |
2,457 | Damaged |
| 4 August 1917 | Cairnstrath | |
2,128 | Sunk |
| 7 August 1917 | Port Curtis | |
4,710 | Sunk |
| 8 August 1917 | HMS Dunraven |  |
3,117 | Sunk |
| 6 September 1917 | Elisabethville | |
7,017 | Sunk |
| 7 September 1917 | Mont de Piete | |
38 | Sunk |
| 7 September 1917 | Kleber | |
277 | Damaged |
| 8 September 1917 | Setubal | |
1,201 | Sunk |
| 9 September 1917 | HMS Myosotis | |
1,250 | Damaged |
| 10 September 1917 | Vikholmen | |
494 | Sunk |
| 22 September 1917 | Matti | |
2,139 | Damaged |
| 22 September 1917 | Trongate | |
2,553 | Sunk |
| 23 September 1917 | Hornsund | |
3,646 | Sunk |
| 24 September 1917 | Leka | |
1,845 | Sunk |
| 31 October 1917 | Estrellano | |
1,161 | Sunk |
| 5 November 1917 | Alcedo | |
983 | Sunk |
| 16 November 1917 | Naalso | |
135 | Sunk |
| 6 December 1917 | Apley | |
222 | Sunk |
| 6 December 1917 | Wyndhurst | |
570 | Sunk |
| 6 December 1917 | Braeside | |
569 | Sunk |
| 24 December 1917 | Luciston | |
2,877 | Sunk |
| 25 December 1917 | Espagne | |
1,463 | Sunk |
| 25 December 1917 | Hyacinthus | |
5,756 | Damaged |
| 27 December 1917 | P. L. M. 4 | |
2,640 | Sunk |
| 28 December 1917 | Fallodon | |
3,012 | Sunk |
| 28 December 1917 | HMD Piscatorial II | |
93 | Sunk |
| 29 December 1917 | Sapper | |
276 | Sunk |
| 18 January 1918 | Gambri | |
274 | Sunk |
| 20 January 1918 | Harmonides | |
3,521 | Damaged |
| 23 January 1918 | Aalesund | |
414 | Sunk |
| 14 February 1918 | Atlas | |
3,090 | Sunk |
| 19 February 1918 | Athenic | |
4,078 | Damaged |
| 19 February 1918 | Commonwealth | |
3,353 | Sunk |
| 8 March 1918 | Saba | |
4,257 | Damaged |
| 12 March 1918 | Clarissa Radcliffe | |
5,754 | Damaged |
| 12 March 1918 | Savan | |
4,264 | Damaged |
| 13 March 1918 | Londonier | |
1,870 | Sunk |
| 14 March 1918 | Agate | |
248 | Sunk |
| 14 March 1918 | Comrie Castle | |
5,173 | Damaged |
| 7 April 1918 | Highland Brigade | |
5,669 | Sunk |
| 12 April 1918 | Luis | |
4,284 | Sunk |
| 10 May 1918 | Amplegarth | |
3,707 | Sunk |
| 15 May 1918 | Pennyworth | |
5,388 | Damaged |
| 20 May 1918 | Manchester Importer | |
4,028 | Damaged |
| 26 June 1918 | Raranga | |
10,040 | Damaged |
| 31 July 1918 | City of Liverpool | |
88 | Sunk |
| 4 August 1918 | Waipara | |
6,994 | Damaged |
| 5 August 1918 | Polescar | |
5,832 | Damaged |
| 20 August 1918 | Mineswepper Shirley | |
820 | Damaged |
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References
Notes
- "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.
- Merchant ship tonnages are in gross register tons. Military vessels are listed by tons displacement.
Citations
- Helgason, Guðmundur. "WWI U-boats: UC 71". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 23 February 2009.
- Tarrant, p. 173.
- Gröner 1991, pp. 31-32.
- Helgason, Guðmundur. "WWI U-boat commanders: Hans Valentiner (Royal House Order of Hohenzollern)". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 March 2015.
- Helgason, Guðmundur. "WWI U-boat commanders: Hugo Thielmann". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 March 2015.
- Helgason, Guðmundur. "WWI U-boat commanders: Reinhold Saltzwedel (Pour le Mérite)". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 March 2015.
- Helgason, Guðmundur. "WWI U-boat commanders: Ernst Steindorff (Royal House Order of Hohenzollern)". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 March 2015.
- Helgason, Guðmundur. "WWI U-boat commanders: Walter Warzecha (Royal House Order of Hohenzollern)". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 March 2015.
- Helgason, Guðmundur. "WWI U-boat commanders: Eberhard Schmidt". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 4 March 2015.
- Helgason, Guðmundur. "Ships hit by UC 71". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 10 December 2014.
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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