SM_U-108
SM U-108[Note 1] was a submarine in the Imperial German Navy in World War I, taking part in the First Battle of the Atlantic.[3]
U-boats 108 and U-C56, in Brest docks, 1918. Note six-inch rifle on bow of U-108 | |
| History | |
|---|---|
 German Empire | |
| Name | U-108 |
| Ordered | 5 May 1916 |
| Builder | Germaniawerft, Kiel |
| Yard number | 277 |
| Launched | 11 October 1917 |
| Commissioned | 5 December 1917 |
| Fate | Surrendered to France, 20 November 1918 |
 France | |
| Name | Léon Mignot |
| Namesake | Léon Mignot |
| Fate | Broken up, 1935 |
| General characteristics [1] | |
| Class and type | German Type U 93 submarine |
| Displacement |
|
| Length |
|
| Beam |
|
| Height | 8.25 m (27 ft 1 in) |
| Draught | 3.90 m (12 ft 10 in) |
| Installed power | |
| Propulsion |
|
| Speed |
|
| Range |
|
| Test depth | 50 m (160 ft) |
| Complement | 4 officers, 32 enlisted |
| Armament |
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| Service record | |
| Part of: |
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| Commanders: | |
| Operations: | 3 patrols |
| Victories: |
1 merchant ship sunk (7,484 GRT) |
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The building contract was confirmed 5 May 1916, and was awarded to Germaniawerft, Kiel.[4] A Type 93 boat, she was launched 11 October 1917 and commissioned 5 December. She was under the command of Korvettenkapitän Martin Nitzsche.
German Type U 93 submarines were preceded by the shorter Type U 87 submarines. U-108 had a displacement of 798 tonnes (785 long tons) when at the surface and 1,000 tonnes (980 long tons) while submerged.[1] She had a total length of 71.55 m (234 ft 9 in), a pressure hull length of 56.05 m (183 ft 11 in), a beam of 6.30 m (20 ft 8 in), a height of 8.25 m (27 ft 1 in), and a draught of 3.90 m (12 ft 10 in). The submarine was powered by two 2,400 metric horsepower (1,800 kW; 2,400 shp) engines for use while surfaced, and two 1,200 metric horsepower (880 kW; 1,200 shp) engines for use while submerged. She had two propeller shafts and two 1.70 m (5 ft 7 in) propellers. The boat was capable of operating at depths of up to 50 metres (160 ft).[1]
The submarine had a maximum surface speed of 16.4 knots (30.4 km/h; 18.9 mph) and a maximum submerged speed of 8.4 knots (15.6 km/h; 9.7 mph).[1] When submerged, she could operate for 50 nautical miles (93 km; 58 mi) at 5 knots (9.3 km/h; 5.8 mph); when surfaced, she could travel 9,280 nautical miles (17,190 km; 10,680 mi) at 8 knots (15 km/h; 9.2 mph). U-108 was fitted with six 50 centimetres (20 in) torpedo tubes (four at the bow and two at the stern), twelve to sixteen torpedoes, one 10.5 cm (4.1 in) SK L/45 deck gun, and one 8.8 cm (3.5 in) SK L/30 deck gun. She had a complement of thirty-six (thirty-two crew members and four officers).[1]
On 20 November 1918, U-108 was surrendered to France where she was commissioned as Léon Mignot and served until 24 July 1935.[3]
| Date | Name | Nationality | Tonnage[Note 2] | Fate[5] |
|---|---|---|---|---|
| 15 July 1918 | Barunga |  United Kingdom |
7,484 | Sunk |
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.
- Tonnages are in gross register tons
Citations
- Gröner 1991, pp. 12–14.
- Helgason, Guðmundur. "WWI U-boat commanders: Martin Nitzsche". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 16 March 2015.
- Helgason, Guðmundur. "WWI U-boats: U 108". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 25 January 2010.
- Rössler, Eberhard, The U-boat: The evolution and technical history of German Submarines, Naval Institute Press, Annapolis, Maryland, 1989, p. 66
- Helgason, Guðmundur. "Ships hit by U 108". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 26 January 2015.
- 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.