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・ Blabia similis
・ Blabia spinella
・ Blabia strandiella
・ BKW FMB Energie
・ BKX
・ Bkyan
・ BL
・ BL (logic)
・ BL 10 inch gun Mk I – IV
・ BL 10-pounder mountain gun
・ BL 12 inch Mk X naval gun
・ BL 12 inch Mk XI – XII naval gun
・ BL 12 inch naval gun
・ BL 12 inch naval gun Mk I – VII
・ BL 12 inch naval gun Mk VIII
BL 12-inch howitzer
・ BL 12-inch railway gun
・ BL 12-inch railway howitzer
・ BL 13.5 inch naval gun Mk I – IV
・ BL 13.5-inch Mk V naval gun
・ BL 14 inch Mk VII naval gun
・ BL 14-inch Railway Gun
・ BL 15 inch Mk I naval gun
・ BL 15-inch howitzer
・ BL 16 inch Mk I naval gun
・ BL 16.25 inch Mk I naval gun
・ BL 18 inch Mk I naval gun
・ BL 18 inch railway howitzer
・ BL 2.75-inch mountain gun
・ BL 4 inch Mk IX naval gun


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BL 12-inch howitzer : ウィキペディア英語版
BL 12-inch howitzer

The Ordnance BL 12-inch howitzer was a scaled-up version of the successful BL 9.2-inch siege howitzer.
==History==
Following the success of their BL 9.2-inch howitzer, Vickers designed an almost identical version scaled up to a calibre of 12 inches, the Mk II entering service on the Western Front in August 1916.〔Hogg & Thurston 1972, Page 180.〕 Eight complete equipments are reported as arriving in August 1916 and being in action in France shortly afterwards.
It was similar but unrelated to the BL 12 inch railway howitzers Mk I, III and V produced by the Elswick Ordnance Company at the same time.
The Mk IV was a more powerful version with longer barrel produced from 1917.
Later models were used for British home defence in World War II.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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