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The ''Viper'' class was a group of two torpedo boat destroyers (or "TBDs") built for the British Royal Navy in 1899. They were notable for being the first warships to use steam turbine propulsion. They had Parsons turbines on four shafts, with two propellers on each, one inboard and one outboard of the shaft A-bracket. was ordered and built for the Royal Navy in 1899 by Hawthorn Leslie and Company at Hebburn on the River Tyne. ''Python'' was built as a speculative venture by Hawthorns and was purchased in 1902. ''Viper'' and another turbine-powered ship, the Vickers special-type were both lost to accidents in 1901: ''Viper'' foundered on rocks in fog during naval manoeuvres near Alderney on 3 August 1901, while ''Cobra'' broke her back in a storm in the North Sea on 18 September 1901. Since then the Royal Navy has not used snake names for destroyers; ''Python'' was renamed ''Velox'' soon after. ''Velox'' was rated as a C-class destroyer in 1913, that is, one of a heterogeneous group of 30-knot torpedo boat destroyer with three funnels. The ships were considered successes when acquired, achieving speeds of up to 36 knots on trials. All subsequent British destroyers from the River or E class of 1903 to the County class of 1960 used steam turbine machinery. ==Ships== * , launched 6 September 1899, wrecked near Alderney on 3 August 1901. *''Python'', later renamed , launched 11 February 1902, mined and sunk off Nab light vessel, 25 October 1915. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Viper-class destroyer」の詳細全文を読む スポンサード リンク
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