HMS Unison

History
United Kingdom
Name	HMS Unison
Builder	Vickers Armstrong, Barrow-in-Furness
Laid down	30 December 1940
Launched	5 November 1941
Commissioned	19 February 1942
Out of service	transferred to Soviet Navy 26 June 1944
Fate	Scrapped May 1950
Soviet Union
Name	V-3
Acquired	26 June 1944
Fate	Returned to Royal Navy in 1949
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 x bow internal 21 inch (533 mm)torpedo tubes - 8 - 10 torpedoes 1 x 3-inch (76 mm) gun

HMS Unison (P43) was a Royal Navy U-class submarine built by Vickers-Armstrong at Barrow-in-Furness, and part of the third group of that class. She is the only craft of the Royal Navy to have borne the name Unison. Prior to receiving the name, she carried the pennant number P43 and was unofficially known as Ulysses. She was renamed Unison in 1943.^[1]