SM UB-107

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For other ships with the same name, see German submarine U-107.
History
German Empire
Name: UB-107
Ordered: 6/8 February 1917[1]23 September 1913
Builder: Blohm & Voss, Hamburg
Cost: 3,714,000 German Papiermark
Yard number: 313
Launched: 21 July 1917[2]
Commissioned: 16 February 1918[2]
Fate: sunk 27 July 1918 by British warships at Lua error in package.lua at line 80: module 'strict' not found..[2]
General characteristics [3]
Class & type: German Type UB III submarine
Displacement:
  • 519 t (511 long tons) surfaced
  • 649 t (639 long tons) submerged
Length: 55.30 m (181 ft 5 in) (o/a)
Beam: 5.80 m (19.0 ft)
Draught: 3.70 m (12 ft 2 in)
Propulsion:
Speed:
  • 13.3 knots (24.6 km/h; 15.3 mph) surfaced
  • 7.5 knots (13.9 km/h; 8.6 mph) submerged
Range:
  • 7,420 nmi (13,740 km; 8,540 mi) at 6 knots (11 km/h; 6.9 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: 3 officers, 31 men[4]
Armament:
Service record[5]
Part of:
  • Flandern II Flotilla
  • 16 May – 4 August 1918
Commanders:
  • Kptlt. Hans Howaldt
  • 16 February – 16 May 1918
  • Kptlt. Eberhard von Prittwitz und Gaffron
  • 17 May – 4 August 1918
Operations: 4 patrols
Victories:
  • 11 merchant ships sunk (26,147 GRT)
  • 1 merchant ship damaged (1,685 GRT)

SM UB-107 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 16 February 1918 as SM UB-107.[nb 1]

The submarine conducted 4 patrols and sank 11 ships during the war for a total loss of 26,147 GRT. UB-107 was sunk on 27 July 1918 by HMS Vanessa and HMT Calvis at Lua error in package.lua at line 80: module 'strict' not found..[2]

Construction

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Main article: German Type UB III submarine

UB-107 was ordered by the GIN on 23 September 1916. She was built by Blohm & Voss of Hamburg and following just under a year of construction, launched at Hamburg on 21 July 1917. UB-107 was commissioned early the next year . Like all Type UB III submarines, UB-107 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-107 would carry a crew of up to 3 officer and 31 men and had a cruising range of 7,420 nautical miles (13,740 km; 8,540 mi). UB-107 had a displacement of 519 t (511 long tons) while surfaced and 649 t (639 long tons) when submerged. Her engines enabled her to travel at 13.3 knots (24.6 km/h; 15.3 mph) when surfaced and 7.4 knots (13.7 km/h; 8.5 mph) when submerged.

Fate

The first recorded fate of UB-107 was noted as sunk by depth charge on July 27, 1918 by the Royal Navy trawler Calvis and HMY Vanessa II at position Lua error in package.lua at line 80: module 'strict' not found.. It has since been argued that the UB-107 was probably not present for the attack by Calvis and Vanessa II as it was the only U-boat that could have been responsible for the sinking of steamers Chloris and John Rettig two and a half hours later at position Lua error in package.lua at line 80: module 'strict' not found..

In 1985 divers discovered the wreck of UB-107 one mile north of Flamborough Head at position Lua error in package.lua at line 80: module 'strict' not found. entangled with another wreck, the SS Malvina, a British steamer torpedoed and sunk on 3 August 1918 by UB-104. UB-107 was identified by the markings on her propellers.[6][7] It is suggested that either UB-107 suffered an accident of some sort or was lost on a British mine between July 28 and August 3, 1918 leaving all hands lost (38 dead).[8]

Summary of raiding career

Date Name Nationality Tonnage
(GRT)		 Fate[9]
10 May 1918 Erich Lea  Norway 1,630 Sunk
10 May 1918 Naparima  Sweden 1,685 Damaged
6 June 1918 Koningin Regentes  Netherlands 1,970 Sunk
8 June 1918 Hogarth  United Kingdom 1,231 Sunk
13 June 1918 Agnes  Sweden 1,334 Sunk
13 June 1918 Kalo  United Kingdom 1,957 Sunk
15 June 1918 Kieldrecht  United Kingdom 1,284 Sunk
8 July 1918 Chicago  United Kingdom 7,709 Sunk
8 July 1918 War Crocus  United Kingdom 5,296 Sunk
9 July 1918 Fryken  Sweden 943 Sunk
27 July 1918 Chloris  United Kingdom 984 Sunk
27 July 1918 John Rettig  Sweden 1,809 Sunk

Television Documentary

The fate of UB-107 was the subject of an episode of the documentary television series Deep Sea Detectives: "Mystery U-Boat of WWI". The documentary offered various scenarios for the sinking based on historical evidence and exploratory diving at the wreck site.[10]

Notes

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References

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Bibliography

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  1. ↑ Rössler 1979, p. 66.
  2. ↑ 2.0 2.1 2.2 2.3 Gröner 1985, p. 55.
  3. ↑ Gröner 1985, pp. 52-53.
  4. ↑ Gröner 1985, p. 53.
  5. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  9. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  10. ↑ http://www.tv.com/shows/deep-sea-detectives/mystery-u-boat-of-world-war-i-1066625/


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