close-in weapon system
close-in weapon system is an artillery gun or weapon type.
Also recorded as CIWS.
Overview
Type of point-defense weapon system.
In detail
Its recorded use is point-defense.
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
“Close-in weapon system”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q1054730: close-in weapon system
Consult the source