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BL 10 inch gun Mk I – IV : ウィキペディア英語版 | BL 10 inch gun Mk I – IV
The BL 10 inch guns Mks I, II, III, IV〔Mks I, II, III, IV = Marks 1, 2, 3, 4. Britain used Roman numerals to designate marks (models) of ordnance until after World War II. Hence this article covers the four models of British BL 10-inch guns.〕 were British rifled breechloading 32-calibres naval and coast defence guns in service from 1885. ==History== The British 10 inch calibre originated with the Committee on Ordnance in 1879 when it ordered a new 10.4 inch gun together with the new 9.2 inch 〔Hogg & Thurston 1972, page 176〕 as part of its transition from muzzle-loading to breech-loading guns. The proposed 10.4 inch gun eventually went into service in 1885 as a 10-inch gun firing a 500-pound projectile. After Mk IV of 1889 the Royal Navy discontinued the 10-inch calibre in favour of 9.2-inch and 12-inch.
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「BL 10 inch gun Mk I – IV」の詳細全文を読む
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