SM UB-90
 UB-148 at sea, a U-boat similar to UB-90. | |
| History | |
|---|---|
 German Empire
| |
| Name: | UB-90 |
| Ordered: | 6/8 February 1917[1] |
| Builder: | AG Vulcan, Hamburg |
| Cost: | 3,654,000 German Papiermark |
| Yard number: | 106 |
| Launched: | 12 February 1918[2] |
| Commissioned: | 21 March 1918[2] |
| Fate: | sunk 16 October 1918 by British submarine[2] |
| General characteristics [2] | |
| Class & type: | German Type UB III submarine |
| Displacement: |
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| Length: | 55.52 m (182 ft 2 in) (o/a) |
| Beam: | 5.76 m (18 ft 11 in) |
| Draught: | 3.73 m (12 ft 3 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[2] |
| Armament: |
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| Service record | |
| Part of: |
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| Commanders: |
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| Operations: | 2 patrols |
| Victories: | |
SM UB-90 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 21 March 1918 as SM UB-90.[nb 1]
On 16 October 1918, UB-90 was hit by a torpedo from HMS L12 at 57°55′N 10°27′E / 57.917°N 10.450°ECoordinates: 57°55′N 10°27′E / 57.917°N 10.450°E and sunk. All 38 crew members died in the event.[2]
Construction
She was built by AG Vulcan of Hamburg and following just under a year of construction, launched at Hamburg on 12 February 1918. UB-90 was commissioned early the next year under the command of Oblt.z.S. Gottfried von Mayer. Like all Type UB III submarines, UB-90 carried 10 torpedoes and was armed with a 10.5 cm (4.13 in) deck gun. UB-90 would carry a crew of up to 3 officer and 31 men and had a cruising range of 7,120 nautical miles (13,190 km; 8,190 mi). UB-90 had a displacement of 510 t (500 long tons) while surfaced and 640 t (630 long tons) when submerged. Her engines enabled her to travel at 13 knots (24 km/h; 15 mph) when surfaced and 7.4 knots (13.7 km/h; 8.5 mph) when submerged.
Summary of raiding history
| Date | Name | Nationality | Tonnage (GRT) |
Fate[4] |
|---|---|---|---|---|
| 29 July 1918 | Douro |  Denmark |
850 | Captured as a prize |
| 3 October 1918 | Eupion |  United Kingdom |
3,575 | 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.
References
- ↑ Rössler 1979, p. 61.
- 1 2 3 4 5 6 Gröner 1991, pp. 25-30.
- ↑ Helgason, Guðmundur. "Gottfried von Mayer". German and Austrian U-Boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 8 February 2015.
- ↑ Helgason, Guðmundur. "Ships hit by UB-90". German and Austrian U-Boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 8 February 2015.
Bibliography
- Bendert, Harald (2000). Die UB-Boote der Kaiserlichen Marine, 1914-1918. Einsätze, Erfolge, Schicksal (in German). Hamburg: Verlag E.S. Mittler & Sohn GmbH. ISBN 3-8132-0713-7.
- 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.
- Rössler, Eberhard (1979). U-Bootbau bis Ende des 1. Weltkrieges, Konstruktionen für das Ausland und die Jahre 1935 – 1945. Die deutschen U-Boote und ihre Werften (in German) I (Munich: Bernard & Graefe). ISBN 3-7637-5213-7.