HMS Jupiter (F85)

History
Jupiter in August 1940, with the destroyer Kashmir in the background
United Kingdom
Name:	HMS Jupiter
Builder:	Yarrow & Company
Laid down:	28 September 1937
Launched:	27 October 1938
Commissioned:	25 June 1939
Identification:	pennant number:F85
Fate:	Struck a mine and sank, 27 February 1942
General characteristics (as built)
Class and type:	J-class destroyer
Displacement:	1,690 long tons (1,720 t) (standard) 2,330 long tons (2,370 t) (deep load)
Length:	356 ft 6 in (108.66 m) o/a
Beam:	35 ft 9 in (10.90 m)
Draught:	12 ft 6 in (3.81 m) (deep)
Installed power:	44,000 shp (33,000 kW) 2 × Admiralty 3-drum boilers
Propulsion:	2 × shafts; 2 × geared steam turbines
Speed:	36 knots (67 km/h; 41 mph)
Range:	5,500 nmi (10,200 km; 6,300 mi) at 15 knots (28 km/h; 17 mph)
Complement:	183 (218 for flotilla leaders)
Sensors and processing systems:	ASDIC
Armament:	3 × twin QF 4.7-inch (120 mm) Mk XII guns 1 × quadruple QF 2-pounder (40 mm) anti-aircraft guns 2 × quadruple QF 0.5-inch (12.7 mm) Mk III anti-aircraft machineguns 2 × quintuple 21-inch (533 mm) torpedo tubes 20 × depth charges, 1 × rack, 2 × throwers

HMS Jupiter was a J-class destroyer of the Royal Navy.

Jupiter was ordered, along with the rest of the J class, on 25 March 1937, and was laid down by Yarrow, Limited, at their Scotstoun, Glasgow shipyard on Clydebank in Scotland on 28 September 1937 and launched on 27 October 1938. She was commissioned on 22 June 1939, and was completed on 25 June 1939, at a cost of £389,511.

As completed, Jupiter had a main gun armament of six 4.7-inch (119 mm) QF Mark XII guns in three twin mountings, two forward and one aft. These guns could only elevate to an angle of 40 degrees, and so were of limited use in the anti-aircraft role, while the aft mount was arranged so that it could fire forwards over the ship's superstructure to maximise the forward firing firepower, but was therefore incapable of firing directly aft. A short range anti-aircraft armament of a four-barrelled 2 pounder "pom-pom" anti-aircraft mount and eight .50 in machine guns in two quadruple mounts was fitted, while torpedo armament consisted of ten 21-inch (533 mm) torpedo tubes in two quintuple mounts.

After commissioning, Jupiter underwent sea trials and worked up at Portland, with these activities being delayed by problems with the ship's turbines that required repair at Devonport Dockyard. Jupiter completed trials on 1 September 1939, and joined the 7th Destroyer Flotilla of the Home Fleet, based on the Humber, in time for the British declaration of war on 3 September 1939.

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Wikipedia