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The Armstrong Whitworth 12 inch naval gun of 40 calibres length was designed by, and manufactured mainly by, Armstrong's ordnance branch, Elswick Ordnance Company. It was intended for the Royal Navy's s, but budgetary constraints delayed their introduction. The first units were instead supplied to Japan. As the Type 41 12-inch (305 mm)/40 caliber naval gun it was the standard main battery on several early United Kingdom-built pre-dreadnought battleships of the Imperial Japanese Navy. It later entered service with the RN as the 12 inch Mark IX, being fitted to warships of three pre-dreadnought classes prior to World War I. Also during the war several guns were converted for use as railway guns, and, towards the end of the conflict, for use on the M-class submarine monitors. The gun also saw service with the Italian ''Regia Marina'', in two classes of pre-dreadnought battleships. ==Design and development== The Type 41 12-inch naval gun was produced by Armstrong Whitworth, Elswick, Newcastle upon Tyne, as a slightly modified version of the “EOC G pattern” 12-inch guns used on contemporary Royal Navy battleships. 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「Armstrong Whitworth 12 inch /40 naval gun」の詳細全文を読む スポンサード リンク
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