41 cm/45 3rd Year Type naval gun
41 cm/45 3rd Year Type naval gun is a rifled breech loader or naval artillery.
Overview
Japanese naval/coastal defence gun.
In detail
It is associated with Empire of Japan.
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
“41 cm/45 3rd Year Type naval gun”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q10858212: 41 cm/45 3rd Year Type naval gun
Consult the source