Summary
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.[Note 1]
 UB-148 at sea, a U-boat similar to UB-90.
| |
| History | |
|---|---|
 German Empire | |
| Name | UB-90 |
| Ordered | 6 / 8 February 1917[2] |
| Builder | AG Vulcan, Hamburg |
| Cost | 3,654,000 German Papiermark |
| Yard number | 106 |
| Launched | 12 February 1918[1] |
| Commissioned | 21 March 1918[1] |
| Fate | Sunk 16 October 1918 by British submarine[1] |
| General characteristics [1] | |
| Class and type | German Type UB III submarine |
| Displacement |
|
| 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 |
|
| Speed |
|
| Range |
|
| Test depth | 50 m (160 ft) |
| Complement | 3 officers, 31 men[1] |
| Armament |
|
| Service record | |
| Part of: |
|
| Commanders: |
|
| Operations: | 2 patrols |
| Victories: | |
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°E and sunk. All 38 crew members died in the event.[1]
Construction edit
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 edit
| Date | Name | Nationality | Tonnage[Note 2] | Fate[4] |
|---|---|---|---|---|
| 29 July 1918 | Douro |  Denmark
|
850 | Captured as prize |
| 3 October 1918 | Eupion |  United Kingdom
|
3,575 | Sunk |
References edit
Notes edit
- ^ "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 edit
- ^ a b c d e f Gröner 1991, pp. 25–30.
- ^ Rössler 1979, p. 61.
- ^ Helgason, Guðmundur. "WWI U-boat commanders: 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 edit
- Bendert, Harald (2000). Die UB-Boote der Kaiserlichen Marine, 1914-1918. Einsätze, Erfolge, Schicksal (in German). Hamburg: Verlag E.S. Mittler & Sohn GmbH. ISBN 978-3-8132-0713-2.
- 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 978-0-85177-593-7.
- Rössler, Eberhard (1979). Die deutschen U-Boote und ihre Werften: eine Bilddokumentation über den deutschen U-Bootbau; in zwei Bänden (in German). Vol. I. Munich: Bernard & Graefe. ISBN 3-7637-5213-7.