History
United Kingdom
Name	HMS Untiring
Builder	Vickers Armstrong, Newcastle upon Tyne
Laid down	23 December 1941
Launched	20 January 1943
Commissioned	9 June 1943
Out of service	Loaned to Greek Navy from July 1945
Identification	P59
Fate	Sunk as ASDIC target 25 July 1957
Badge
Greece
Name	Xifias
In service	July 1945
Identification	Y-10
Fate	Returned to Royal Navy in 1952
General characteristics
Class and type	U-class submarine
Displacement	Surfaced - 540 tons standard, 630 tons full load Submerged - 730 tons
Length	58.22 m (191 ft 0 in)
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 kn (20.84 km/h; 12.95 mph) max surfaced 10 kn (19 km/h; 12 mph) max submerged
Complement	27-31
Armament	4 bow internal 21 inch (533 mm)torpedo tubes - 8 - 10 torpedoes 1 - 3-inch (76 mm) gun

HMS Untiring (P59) 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 Untiring. After the war, she was loaned to the Greek Navy and renamed Xifias (Y-10).

Wartime career

After a work up patrol off the Norwegian coast, where she sank the Norwegian fishing vessel Havbris I^[1] whilst she was fishing for halibut, Untiring was assigned to operate in the Mediterranean. Here, she went on to sink the German netlayer Netztender 44/Prudente, the German barge F 296, the German ships Jean Suzon/FP 352 and St. Antoine/FP 358, the German auxiliary minesweeper M 6022/Enseigne, the German merchants Diana and Siena (the former French Astrée), the German auxiliary submarine chasers UJ 6075 / Clairvoyant and UJ 6078/La Havraise, and also claimed to have sunk a sailing vessel with gunfire.

She also unsuccessfully attacked the German submarine U-616, the German auxiliary submarine chaser UJ 6073/Nimeth Allah, the German torpedo boat TA18 (the former Italian Solferino), the German merchant Burgas and an unidentified German auxiliary patrol vessel.

Greek service

Untiring survived the war and was loaned to the Greek Navy in July 1945, where she was renamed Xifias. 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 on 25 July 1957.^[2]

Citations

References

• McCartney, Innes (2002). Lost patrols : submarine wrecks of the English Channel. Penzance: Periscope. ISBN 978-1-90438-104-4.
• "Untiring to Urge". British submarines of World War II. Archived from the original on 11 July 2007.
• Colledge, J. J.; Warlow, Ben (2006) [1969]. 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.
• 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.