|Class and type:||U-class submarine|
|Builder:||Vickers Armstrong, Barrow-in-Furness|
|Laid down:||19 November 1941|
|Launched:||27 July 1942|
|Out of service:||transferred to Royal Netherlands Navy|
|Commissioned:||8 October 1942|
Surfaced - 540 tons standard, 630 tons full load
Submerged - 730 tons
|Length:||58.22 m (191 feet)|
|Beam:||4.90 m (16 ft 1 in)|
|Draught:||4.62 m (15 ft 2 in)|
2 shaft diesel-electric
11.25 knots max surfaced
10 knots max submerged
4 bow internal 21 inch torpedo tubes - 8 - 10 torpedoes
1 - 3 inch gun
Dolfijn spent between September 1942 and January 1943 carrying out trials with the 3rd Flotilla, in Holy Loch. In January she was assigned to the 8th Flotilla, at Algiers, and between November and December 1943, to the 10th Flotilla, at Malta. Whilst on her first war patrol she attacked a so far unidentified German submarine, but missed her. On 9 February 1943, she torpedoed and sank the Italian Perla class submarine Malachite near Cape Spartivento, Sardinia, Italy. She went on to sink the Italian merchant Egle, the Italian auxiliary patrol vessel V50 / Adalia, the Italian sailing vessel Stefano Galleano and four other sailing vessels, including the Greek Hydrea and Theonie, as well as two small German vessels. She also damaged the Italian merchants Humanitas and Sabia, and launched unsuccessful attacks against the German merchants Oria and Leda (the former Italian Leopardi). The attack on the Leda was foiled by the escorting German destroyer TA 14 (the former Italian Turbine). Dolfijn also torpedoed the wreck of the French merchant Dalny and attacked a small convoy with gunfire, firing 16 rounds and hitting the barge Vidi twice. Dolfijn was forced to break off the action and submerge due to quick return fire.
Between December 1943 and March 1944, Dolfijn was part of the 1st Flotilla, at Beirut. She eventually returned to the UK with convoys, and was refitted at Dundee. After the war she became a training boat in Amsterdam between 1947 and 1952. She was decommissioned and nominally returned to the Royal Navy, but was broken up in the Netherlands in May 1952.
- "HMS P47". uboat.net. http://uboat.net/allies/warships/ship/2908.html.
- "P32 to P222". British submarines of World War II. Archived from the original on 2007-04-29. http://web.archive.org/web/20070429122200/http://home.cogeco.ca/~gchalcraft/sm/page6.html.
- 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.
- Robert Hutchinson: Submarines, War Beneath The Waves, From 1776 To The Present Day.
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