HMS Impulsive (D11)
HMS "Impulsive" was an built for the Royal Navy during the 1930s. She saw service in World War II before being scrapped in 1946. She has been the only ship of the Navy to bear this name. Description. The I-class ships were improved versions of the preceding H-class. They displaced at standard load and at deep load. The ships had an overall length of , a beam of and a draught of . They were powered by two Parsons geared steam turbines, each driving one propeller shaft, using steam provided by three Admiralty three-drum boilers. The  turbines developed a total of and were intended to give a maximum speed of . "Impulsive" only reached a speed of from during her sea trials. The ships carried enough fuel oil to give them a range of at . Their crew numbered 145 officers and ratings. The ships mounted four 4.7-inch (120 mm) Mark IX guns in single mounts, designated 'A', 'B', 'X' and 'Y' from bow to stern. For anti-aircraft (AA) defence, they had two quadruple mounts for the 0.5 inch Vickers Mark III machine gun. The I class was fitted with two above-water quintuple torpedo tube  mounts for torpedoes. One depth charge rack and two throwers were fitted; 16 depth charges were originally carried, but this increased to 35 shortly after the war began. "Impulsive" was one of the four I-class destroyers fitted with minelaying equipment in late 1938 – January 1939 at Malta. This consisted of mounts for rails on the deck on which to carry the mines and an electric winch to move the mines down the rails. A pair of sponsons were added to the stern to allow the mines to clear the propellers when dropped into the sea. 'A' and 'Y' guns  and both sets of torpedo tubes were modified to allow them to be removed to compensate for the weight of the mines. The ships could carry a maximum of 72 mines. The I-class ships were fitted with the ASDIC sound detection system to locate submarines underwater. Construction and career. "Impulsive" was laid down on 9 March 1936 by J. Samuel White and Company at their Cowes shipyard, launched on 1 March 1937 and completed on 29 January 1938. 28 and 29 May 1940 she made four trips to Dunkirk and rescued 2,919 troops. Following that, she participated in mine -laying duties and in the Arctic convoys. She attacked and sank the in the Barents Sea north-east of Murmansk in Russia on 16 September 1942. Its commander was William Scott Thomas, grandfather of actress Kristin Scott Thomas and the father of Admiral Sir Richard Thomas (a former Black Rod). "Impulsive" was sold for scrap to W. H. Arnott, Young and Company, Limited on 22 January 1946 and broken up at Sunderland.