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・ BL 18 inch railway howitzer
・ BL 2.75-inch mountain gun
・ BL 4 inch Mk IX naval gun
・ BL 4 inch naval gun Mk I – VI
・ BL 4 inch naval gun Mk VII
・ BL 4 inch naval gun Mk VIII
・ BL 4.5-inch Medium Field Gun
・ BL 4.7 inch /45 naval gun
・ BL 5 inch gun Mk I – V
・ BL 5-inch howitzer
・ BL 5.4-inch howitzer
・ BL 5.5 inch Mark I naval gun
・ BL 5.5-inch Medium Gun
・ BL 6 inch 80 pounder gun
・ BL 6 inch gun Mk II – VI
BL 6 inch gun Mk V
・ BL 6 inch Mk XI naval gun
・ BL 6 inch Mk XII naval gun
・ BL 6 inch Mk XXII naval gun
・ BL 6 inch Mk XXIII naval gun
・ BL 6 inch naval guns Mk XIII – XVIII
・ BL 6-inch 26 cwt howitzer
・ BL 6-inch 30 cwt howitzer
・ BL 6-inch Gun Mk XIX
・ BL 6-inch Mk VII naval gun
・ BL 60-pounder gun
・ BL 7.2-inch howitzer
・ BL 7.5 inch Mk VI naval gun
・ BL 7.5-inch Mk I naval gun
・ BL 7.5-inch Mk II – V naval gun


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BL 6 inch gun Mk V : ウィキペディア英語版
BL 6 inch gun Mk V

The BL 6 inch gun Mk V 〔Mk V = Mark 5. Britain used Roman numerals to designate Marks (models) of ordnance until after World War II. Hence this was the fifth model of BL 6-inch gun in British service.〕 was an early Elswick Ordnance Company breech-loading naval gun originally designed to use the old gunpowder propellants. They were used for coast defence around the British Empire.
==Description and service==

This was an Elswick Ordnance export design, completely different from and longer (30-calibres, 183.5 inch bore) than the contemporary 26-calibres British naval service 6-inch Mk III, IV and VI guns designed by the Royal Gun Factory, although it fired the same 100-pound projectiles. The gun was of a complex all-steel built-up construction, of a steel A-tube surrounded by multiple steel hoops, breech-piece and jacket.
Several were acquired by the British government for coast defence in the UK and were given the designation 6-inch gun Mark V. The breech fittings and firing mechanism were modified in British service to standardize them with the British service guns, Mark IV and VI. The breech-screw was locked by turning to the left, unlike standard service guns made by the Royal Gun Factory, which all locked to the right. Rifling consisted of 28 grooves of the polygroove "Elswick section" type, increasing from 0 to 1 turn in 30 calibres (i.e. 1 turn in 180 inches) at the muzzle.〔"Treatise on Construction of Service Ordnance, 1893", pages 263-264〕
They were also exported for use as coast-defence guns in Hong Kong, New Zealand, Australian colonies and Siam (Thailand), typically as disappearing guns.



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