BL 14 inch Mk VII gun
BL 14 inch Mk VII gun is a rifled breech loader or naval artillery.
Overview
British naval artillery.
In detail
It is associated with United Kingdom.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“BL 14-inch Mk VII naval gun”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q2813201: BL 14 inch Mk VII gun
Consult the source