6 inch/47 caliber Mark 16 gun
6 inch/47 caliber Mark 16 gun is a rifled breech loader or naval artillery.
Overview
American naval artillery.
In detail
It is associated with United States.
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
“6-inch/47-caliber gun”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q6766411: 6 inch/47 caliber Mark 16 gun
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