|HMS Upstart (P65)|
|Career (United Kingdom)|
|Class and type:||U-class submarine|
|Builder:||Vickers Armstrong, Barrow-in-Furness|
|Laid down:||17 March 1942|
|Launched:||24 November 1942|
|Commissioned:||3 April 1943|
|Out of service:||Loaned to Greek Navy from 1945|
|Fate:||sunk as ASDIC target 29 July 1959|
|Out of service:||Returned to Royal Navy in 1952|
Surfaced - 540 tons standard, 630 tons full load
Submerged - 730 tons
|Length:||58.22 m (191 ft)|
|Beam:||4.90 m (16 ft 1 in)|
|Draught:||4.62 m (15 ft 2 in)|
2 shaft diesel-electric
11.25 knots (20.8 km/h) max surfaced
10 knots (19 km/h) max submerged
4 bow internal 21-inch (533 mm) torpedo tubes - 8 - 10 torpedoes
1 - 3-inch (76 mm) gun
HMS Upstart (P65) was a Royal Navy U-class submarine built by Vickers-Armstrong. So far she has been the only ship of the Royal Navy to bear the name Upstart. After the war, she was loaned to the Greek Navy and renamed Amphitriti.
Upstart spent most of her wartime career operating off the south coast of France, where she sank the French fishing vessels Grotte de Bethlehem and Torpille, the German auxiliary minelayer Niedersachsen (the former French Guyane) and the German merchant Tolentino (the former French Saumur). She also launched failed attacks against the French merchant Medjerda and the Italian merchant Pascoli.
Upstart survived the war and was loaned to the Greek Navy in 1945, where she was renamed Amphitriti. She served with the Greek Navy for seven years, and was returned to the Royal Navy in 1952. She was subsequently sunk as an ASDIC target off the Isle of Wight on 29 July 1959.
- Innes McCartney (2002). Lost Patrols: Submarine Wrecks of the English Channel.
- "HMS Upstart (P 65)". uboat.net. http://uboat.net/allies/warships/ship/3569.html.
- "Untiring to Urge". British submarines of World War II. Archived from the original on 2012-07-08. https://archive.is/PEQo.
- Colledge, J. J.; Warlow, Ben (2006) . Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8. OCLC 67375475.
- Hutchinson, Robert (2001). Jane's Submarines: War Beneath the Waves from 1776 to the Present Day. London: HarperCollins. ISBN 978-0-00-710558-8. OCLC 53783010.
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