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The ''Pelorus''-class cruiser was a "third-class" protected cruiser class of eleven Royal Navy warships designed by Sir William White (Director of Naval Construction 1885 – 1902), based on the earlier ''Pearl''-class cruisers. They were ordered in 1893 under the Spencer Programme, and laid down 1896–1900. The first, , was commissioned in 1896. In an era of naval innovation, the class was almost outdated before they were launched. They were fitted with a variety of different boilers as a trial but most were not particularly satisfactory; so HMS ''Pandora'' was scrapped in 1913, HMS ''Perseus'' and HMS ''Prometheus'' in 1914. They had all been condemned in 1904 but had been reprieved. The remainder were to be scrapped in 1915, but were kept in service through the First World War. HMS ''Pegasus'' was sunk in combat in 1914, the rest - except for HMS ''Pioneer'' - were scrapped between 1919 and 1922. HMS ''Pactolus'' and HMS ''Pomone'' had Blechynden boilers which were particularly unreliable, they were removed from active service several years before others in the class. Rear Admiral Cresswell, the 1st Naval Member of the Australian Naval Board described ''Psyche'' and ''Pyramus'' in 1914 as "the unspeakably useless P. class."〔McGibbon, I.C. (1981) ''Blue-Water Rationale: The Naval Defence of New Zealand 1914–1942'', page 15 note 50 (GP Print, Wellington, NZ) ISBN 0-477-01072-5〕 ==Development and design== The ''Pelorus'' class ships displaced 2,135 tons and had a top speed of . Most served in minor roles on overseas or colonial patrol work, not with the main battlefleets. They carried a complement of 224 and were armed with eight QF 4-inch (25 pounder) guns, eight 3 pounder guns, three machine guns, and two 18-inch (450-mm) torpedo tubes. They had reciprocating triple expansion steam engines and were equipped with different types of boiler which were trialled in these cruisers. Some had Normand water-tube boilers which could give for limited periods of time with forced draught and under natural draught. 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「Pelorus-class cruiser」の詳細全文を読む スポンサード リンク
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