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Concept
HMS Undine (R42)
Résumé
HMS Undine was a U-class destroyer of the British Royal Navy that saw service during World War II. On 27 March 1945, HMS Undine detached from RN Fast Carrier TF57 to rescue the airmen of a downed RN TBF Avenger aircraft also rescued a USN Corsair pilot adrift for two days south of the Sakishima Gunto in the Philippine Sea.
Undine was one of eight U-class destroyers ordered as the 7th Emergency Flotilla on 12 June 1941. The U-class were War Emergency Programme destroyers, intended for general duties, including use as anti-submarine escort, and were to be suitable for mass-production. They were based on the hull and machinery of the pre-war J-class destroyers, but with a lighter armament (effectively whatever armament was available) in order to speed production. The U-class were almost identical to the S-class ordered as the 5th Emergency Flotilla and the T-class ordered as the 6th Emergency Flotilla earlier in the year, but were not fitted for operations in Arctic waters.
The U-class were long overall, at the waterline and between perpendiculars, with a beam of and a draught of mean and full load. Displacement was standard and full load. Two Admiralty 3-drum water-tube boilers supplied steam at and to two sets of Parsons single-reduction geared steam turbines, which drove two propeller shafts. The machinery was rated at giving a maximum speed of and at full load. 615 tons of oil were carried, giving a range of at .
The ship had a main gun armament of four 4.7 inch (120 mm) QF Mk. IX guns, capable of elevating to an angle of 55 degrees, giving a degree of anti-aircraft capability. The designed close-in anti-aircraft armament for the class was one Hazemayer stabilised twin mount for the Bofors 40 mm gun and four twin Oerlikon 20 mm cannons, although the Bofors was replaced by two more twin Oerlikons on Undine as built. The twin Bofors mount was later re-instated, and five more single Bofors added, with one on the searchlight platform, and four single power operated "Boffin" mounts replaced the remaining twin Oerlikons.
Source officielle
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