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The ''Drake'' class was a four-ship class of armoured cruisers built around 1900 for the Royal Navy. ==Design and description== The ''Drake'' class were enlarged and improved versions of the designed by Sir William White, Chief Constructor of the Royal Navy, to counter the new French armoured cruiser .〔Friedman 2012, pp. 243–52〕 The ships had an overall length of , a beam of and a deep draught of . They displaced and proved to be good seaboats in service.〔 Their crew consisted of 900 officers and other ranks.〔 The ships were powered by two 4-cylinder triple-expansion steam engines, each driving one shaft, using steam provided by 43 Belleville boilers. The engines produced a total of and the ''Drake''s easily reached their designed speed of .〔Chesneau & Kolesnik, p. 69〕 They carried a maximum of of coal.〔Friedman 2012, p. 336〕 The main armament of the ''Drake''-class ships consisted of two breech-loading (BL) in single gun turrets, one each fore and aft of the superstructure.〔 They fired shells to a range of .〔Friedman 2011, pp. 71–72〕 The ships' secondary armament of sixteen BL 6-inch Mk VII guns was arranged in casemates amidships. Eight of these were mounted on the main deck and were only usable in calm weather.〔Friedman 2012, pp. 243, 260–61〕 They had a maximum range of approximately with their shells.〔Friedman 2011, pp. 80–81〕 A dozen quick-firing (QF) 12-pounder 12 cwt guns were fitted for defence against torpedo boats. Two additional 12-pounder 8 cwt guns could be dismounted for service ashore.〔Friedman 2012, pp. 250, 336〕 The ships also carried three 3-pounder Hotchkiss guns and two submerged torpedo tubes.〔 The ship's waterline armour belt had a maximum thickness of and was closed off by transverse bulkheads. The armour of the gun turrets and their barbettes was 6 inches thick while the casemate armour was 5 inches thick. The protective deck armour ranged in thickness from and the conning tower was protected by of armour.〔 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「Drake-class cruiser」の詳細全文を読む スポンサード リンク
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