HMS Ultimatum

	HMS Ultimatum setting off from Holy Loch
History
United Kingdom
Name	HMS Ultimatum
Builder	Vickers Armstrong, Barrow-in-Furness
Laid down	19 June 1940
Launched	11 February 1941
Commissioned	29 July 1941
Fate	Sold for scrap on 23 December 1949, broken up 1950
Badge
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)
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 internal 21 inch (533 mm) torpedo tubes - 8 - 10 torpedoes; 1 - 3-inch (76 mm) gun;

HMS Ultimatum (P34) was a Royal Navy U-class submarine built by Vickers-Armstrong at Barrow-in-Furness, and part of the third group of that class. So far she has been the only ship of the Royal Navy to bear the name Ultimatum.

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