HMSUtmost
History
United Kingdom
Name	HMSUtmost
Builder	Vickers-Armstrongs,Barrow-in-Furness
Laid down	2 November 1939
Launched	20 April 1940
Commissioned	17 August 1940
Fate	Sunk 25 November 1942
Badge
General characteristics
Displacement	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)
Propulsion	2 shaft diesel-electric 2 Paxman Ricardo diesel generators + electric motors 615 / 825 hp
Speed	11.25 knots max surfaced 10 knots max submerged
Complement	27-31
Armament	4 bow internal21 inch (533 mm) torpedo tubes, 2 external 10 torpedoes 1 -3-inch (76 mm) gun

HMSUtmost was aBritish U class submarine, of the second group of that class, built byVickers-Armstrongs,Barrow-in-Furness. She was laid down on 2 November 1939 and was commissioned on 17 August 1940. So far she has been the only ship of theRoyal Navy to bear the nameUtmost.

Utmost spent most of her career operating in theMediterranean, where she sank the Italian merchantsCapo Vita,Enrico Costa, andFrederico C., and the German tankerLanguste and also damaged the Italian merchantManfredo Camperio.Utmost also attacked a convoy of five German merchants and three Italian destroyers and torpedoed and sunk the German merchantHeraklea and torpedoed and damagedRuhr. An attack on another convoy made up of the German merchantTilly L.M. Russ and the Italian merchantCadamosto, escorted by the Italian torpedo boatsPallade andPolluce, was less successful. All torpedoes fired missed their targets.

Utmost went on to destroy the (already grounded and damaged) Italian merchantMarigola, and together with her sister, since transferred to the Poles,ORPSokół, sank the Italian merchantBalilla.Utmost later unsuccessfully attacked the Italian merchantsFabio Filzi andSiculo, as well as the Italian auxiliary minelayerBarletta.^[1] She also torpedoed and damaged the Italian cruiserTrieste.

The Commanding Officer received aDistinguished Service Order for a mission, which is believed to have been the landing of agents behind enemy lines.^[2]

Utmost leftMalta for a patrol in theMediterranean in November 1942. On the 23rd she sank an enemy ship, but on 25 November 1942, during her return journey to Malta, she was located, attacked and sunk south west off Sicily by depth charges from the Italian torpedo boatGroppo.^[3]

• Colledge, J. J.; Warlow, Ben (2006) [1969].Ships of the Royal Navy: The Complete Record of All Fighting Ships of the Royal Navy from the 15th Century to the Present (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.

38°31′0″N12°01′0″E / 38.51667°N 12.01667°E /38.51667; 12.01667

• IWM Interview with John Eaden, who commanded HMSUtmost in 1940

• British U-class submarines
• Ships built in Barrow-in-Furness
• 1940 ships
• World War II submarines of the United Kingdom
• Lost submarines of the United Kingdom
• World War II shipwrecks in the Mediterranean Sea
• Maritime incidents in November 1942
• Submarines sunk by Italian warships
• Ships built by Vickers-Armstrongs at Barrow in Furness

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