History | |
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Name | UB-107 |
Ordered | |
Builder | Blohm & Voss, Hamburg |
Cost | 3,714,000 German Papiermark |
Yard number | 313 |
Launched | 21 July 1917 [3] |
Commissioned | 16 February 1918 [3] |
Fate | Sunk 27 July 1918 by British warships at 54°23′N0°24′W / 54.383°N 0.400°W . [3] |
General characteristics [3] | |
Class and type | Type UB III submarine |
Displacement | |
Length | 55.30 m (181 ft 5 in) (o/a) |
Beam | 5.80 m (19 ft) |
Draught | 3.70 m (12 ft 2 in) |
Propulsion |
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Speed |
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Range |
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Test depth | 50 m (160 ft) |
Complement | 3 officers, 31 men [3] |
Armament |
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Service record [1] | |
Part of: |
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Commanders: |
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Operations: | 4 patrols |
Victories: |
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. [Note 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 (D29) and HMT Calvis at 54°23′N0°24′W / 54.383°N 0.400°W . [3]
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.
The first recorded fate of UB-107 was noted as sunk by depth charge on 27 July 1918 by the Royal Navy trawler Calvia and destroyer Vanessa at position 54°23′N00°24′E / 54.383°N 0.400°E . [4] It has since been argued that the UB-107 was probably not present for the attack by Calvis and Vanessa 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 53°52′N00°10′E / 53.867°N 0.167°E . [5]
In 1985 divers discovered the wreck of UB-107 one mile north of Flamborough Head at position 54°08′N00°00′W / 54.133°N -0.000°E entangled with another wreck, the SS Malvina, a British steamer torpedoed and sunk on 3 August 1918 reported as being by UB-104, though UB-104's record says it was not in the area nor that it attacked a ship on that day. 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 28 July and 3 August 1918, leaving all hands lost (38 dead). [1]
Date | Name | Nationality | Tonnage [Note 2] | Fate [8] |
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10 May 1918 | Erich Lea | ![]() | 1,630 | Sunk |
10 May 1918 | Naparima | ![]() | 1,685 | Damaged |
6 June 1918 | Koningin Regentes | ![]() | 1,970 | Sunk |
8 June 1918 | Hogarth | ![]() | 1,231 | Sunk |
13 June 1918 | Agnes | ![]() | 1,334 | Sunk |
13 June 1918 | Kalo | ![]() | 1,957 | Sunk |
15 June 1918 | Kieldrecht | ![]() | 1,284 | Sunk |
8 July 1918 | Chicago | ![]() | 7,709 | Sunk |
8 July 1918 | War Crocus | ![]() | 5,296 | Sunk |
9 July 1918 | Fryken | ![]() | 943 | Sunk |
27 July 1918 | Chloris | ![]() | 984 | Sunk |
27 July 1918 | John Rettig | ![]() | 1,809 | Sunk |
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. [9]
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