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BL 7.5 inch Mk VI naval gun : ウィキペディア英語版 | BL 7.5 inch Mk VI naval gun
The BL 7.5 inch gun Mark VI〔Mark VI = Mark 6. Britain used Roman numerals to denote Mark (models) of ordnance until after World War II. This was the 6th model of BL 7.5-inch naval gun.〕 was the 45 calibre naval gun forming the main battery of Royal Navy s. These ships with seven single gun mounts were significant to the cruiser limitations defined by the Washington Naval Treaty.〔Preston 1980 pp.69–70〕 ==Description== These were built-up guns with two tubes, full-length wire winding, a jacket, and Welin breech block with hand operated Asbury mechanism. They used two cloth bags each containing 14 kg (31 pounds) of cordite to fire a 200-pound (91-kg) projectile up to 19 kilometers at their maximum elevation of 30 degrees. Useful life expectancy was 650 effective full charges (EFC) per barrel.〔
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 7.5 inch Mk VI naval gun」の詳細全文を読む
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