HMS Una

HMS Una
History
Name:	HMS Una
Builder:	Chatham Dockyard
Laid down:	7 May 1940
Launched:	10 June 1941
Commissioned:	27 September 1941
Decommissioned:	November 1945
Fate:	sold to be broken up for scrap, 11 April 1949
Badge:
General characteristics
Displacement:	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)
Propulsion:	2 shaft diesel-electric 2 Paxman Ricardo diesel generators + electric motors 615 / 825 hp
Speed:	11.25 knots (20.8 km/h) max surfaced 10 knots (19 km/h) 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 Una was a British U class submarine, of the second group of that class, built at Chatham Dockyard. She was laid down on 7 May 1940 and was commissioned on 27 September 1941.

Career

She spent most of her career operating in the Mediterranean from early 1942, where she sank the Italian tanker Luciana, the Italian fishing vessel Maria Immacolata, and the Italian merchants Ninetto G. and Petrarca. She also damaged two sailing vessels and the Italian merchant Cosala (the former Yugoslavian Serafin Topic). The damaged Italian ship was grounded, but declared a total loss and eventually sank during a storm.

The 3-inch (76 mm) gun platform of HMS Una

She was unlucky on numerous occasions, unsuccessfully attacking the Italian merchant Brioni, the Italian tanker Panuco and the German merchant Menes. Una also fired torpedoes against a merchant in Lampedusa harbour. The torpedoes however hit the rocks.^[1]

From April to August 1943, she was used for Anti-Submarine training after undergoing a refit in the UK. After the end of the war, she was decommissioned and placed in reserve in November 1945. She was sold to be broken up for scrap on 11 April 1949 and scrapped at Llanelly.

References

• 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. 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. 

British U-class submarine
Royal Navy	First group Undine Unity Ursula Second group Umpire Una Unbeaten Undaunted Union Unique Upholder Upright Urchin Urge Usk Utmost Third group Ultimatum Ultor Umbra Unbending Unbroken Unison United Universal Unrivalled Unruffled Unruly Unseen Unshaken Unsparing Unswerving Untamed Untiring Uproar Upstart Usurper Uther Vandal Varangian Varne Vitality Vox P32 P33 P36 P38 P39 P41 P47 P48 P52
Other operators  Royal Danish Navy Springeren  Free French Naval Forces Curie  Royal Hellenic Navy Amphitriti Xifias  Royal Netherlands Navy Dolfijn  Royal Norwegian Navy Uredd Ula  Polish Navy Dzik Sokół  Soviet Navy V-2 V-3 V-4
Preceded by: T class Followed by: P611 class List of submarines of the Royal Navy List of submarine classes of the Royal Navy