SM UB-86
SM UB-86 dumped after explosive trials at Falmouth, 1921.
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History | |
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German Empire | |
Name | UB-86 |
Ordered | 23 September 1916[2] |
Builder | AG Weser, Bremen |
Cost | 3,341,000 German Papiermark |
Yard number | 286 |
Laid down | 25 January 1917[3] |
Launched | 10 October 1917[1] |
Commissioned | 10 November 1917[1] |
Fate | Surrendered 24 November 1918, used for explosive trials and dumped on beach 1920; sold for scrap 1921 |
General characteristics [1] | |
Class and type | German Type UB III submarine |
Displacement |
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Length | 55.85 m (183 ft 3 in) ( o/a ) |
Beam | 5.80 m (19 ft) |
Draught | 3.72 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[1] |
Armament |
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Service record | |
Part of: |
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Commanders: |
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Operations: | 5 patrols |
Victories: |
SM UB-86 was a German
commissioned into the German Imperial Navy on 31 October 1917 as SM UB-86.[Note 1]
UB-86 was surrendered to the Allies at
Armistice with Germany. After passing into British hands, UB-86 was towed to Falmouth along with five other U-boats [Note 2] for use in a series of explosive test trials by the Royal Navy in Falmouth Bay, in order to find weaknesses in their design. Following her use on 14 January 1921, UB-86 was dumped on Castle Beach and sold to R. Roskelly & Rodgers on 19 April 1921 for scrap (for £110), and partially salvaged over the following decades, although parts remain in situ.[5]
Construction
UB-85 was ordered on 23 September 1916.
She was built by
torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-86 would carry a crew of up to 3 officer and 31 men and had a cruising range of 8,180 nautical miles (15,150 km; 9,410 mi). UB-86 had a displacement of 516 t (508 long tons) while surfaced and 647 t (637 long tons) when submerged. Her engines enabled her to travel at 13.4 knots
(24.8 km/h; 15.4 mph) when surfaced and 7.5 knots (13.9 km/h; 8.6 mph) when submerged.
Service history
On 17 August 1918 UB-86 torpedoed the cargo steam ship
holds causing her to sink rapidly.[6] The crew took to a boat and a raft and were later picked up by a patrol vessel.[6] The second engineer and one able seaman were lost.[6][7]
Summary of raiding history
Date | Name | Nationality | Tonnage[Note 3] | Fate[8] |
---|---|---|---|---|
21 February 1918 | Mercia | Sweden | 1,127 | Sunk |
11 April 1918 | HMS King Alfred | Royal Navy | 14,150 | Damaged |
18 April 1918 | Gregynog | United Kingdom | 1,701 | Sunk |
17 August 1918 | Denebola | United Kingdom | 1,481 | Sunk |
17 August 1918 | Helene | Denmark | 1,567 | Sunk |
19 August 1918 | Charity | United Kingdom | 1,735 | Damaged |
References
Notes
Citations
- ^ a b c d Gröner 1991, pp. 25–30.
- ^ Rössler 1979, p. 55.
- ^ Helgason, Guðmundur. "WWI U-boats: UB 86". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 13 February 2009.
- ^ Helgason, Guðmundur. "WWI U-boat commanders: Hans Trenk". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 9 March 2015.
- ISBN 978-1-5267-4198-1.
- ^ a b c "SS Denebola [+1918]". Wreck Site. Retrieved 13 March 2014.
- HMSO.
- ^ Helgason, Guðmundur. "Ships hit by UB 86". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 2 December 2014.
Bibliography
- Bendert, Harald (2000). Die UB-Boote der Kaiserlichen Marine, 1914-1918. Einsätze, Erfolge, Schicksal (in German). ISBN 3-8132-0713-7.
- 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.
- Rössler, Eberhard (1979). Die deutschen U-Boote und ihre Werften: eine Bilddokumentation über den deutschen U-Bootbau; in zwei Bänden (in German). Vol. I. ISBN 3-7637-5213-7.