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Japanese battleship Hatsuse : ウィキペディア英語版 | Japanese battleship Hatsuse
was a pre-dreadnought battleship built for the Imperial Japanese Navy by the British firm of Armstrong Whitworth in the late 1890s. The ship participated in the early stages of the Russo-Japanese War of 1904–1905, including the Battle of Port Arthur on the second day of the war. She was involved in the subsequent operations until she struck two mines off Port Arthur in May 1904. The second mine detonated one of her magazines and ''Hatsuse'' sank almost immediately afterwards with the loss of over half her crew. ==Description== ''Hatsuse'' was long overall and had a beam of . She had a full-load draught of and normally displaced and had a crew of 849 officers and enlisted men when serving as a flagship. The ship was powered by two Humphrys Tennant vertical triple-expansion steam engines using steam generated by 25 Belleville boilers. The engines were rated at , using forced draught, and were designed to reach a top speed of around . ''Hatsuse'', however, reached a top speed of from on her sea trials. She carried a maximum of of coal〔Brook 1999, p. 125〕 which allowed her to steam for at a speed of .〔Jentschura, Jung & Mickel, p. 17〕 The ship's main battery consisted of four mounted in two twin gun turrets, one forward and one aft. The secondary battery consisted of fourteen quick-firing guns, mounted in casemates on the sides of the hull and in the superstructure.〔Chesneau & Kolesnik, p. 221〕 A number of smaller guns were carried for defence against torpedo boats. These included 20 QF 12-pounder 12 cwt〔"Cwt" is the abbreviation for hundredweight, 20 cwt referring to the weight of the gun.〕 guns, eight 3-pounder guns and ten 2.5-pounder Hotchkiss guns. She was also armed with four submerged 18-inch torpedo tubes. ''Hatsuse''s waterline armour belt consisted of Harvey armour and was thick. The armour of her gun turrets had a maximum thickness of and her deck ranged from in thickness.〔
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