This weapon was intended to provide close-range defense against aircraft.  Like their counterparts in other nations, these small-caliber guns were incapable of defense against either torpedo-bomber or high-level bomber attacks as the bullets they fired were too light and too short ranged to be effective.  Ships refitted in Allied ports had these guns replaced with 20 mm Oerlikons.

This gun formed the basis for the Japanese 13 mm and 25 mm AA guns of World War II.

13.2 mm AA guns on unidentified Free French destroyer
IWM photograph A 2206

Twin 13.2 mm Hotchkiss MG now at the Exposition of Navy Museum, Gydnia
This weapon was used on the Polish minelayer ORP Gryf
Photograph copyrighted by Michal Kopacz

Sketch of Quad 13.2 mm Hotchkiss MG
Image courtesy of John Schaefer

Quad 13.2 mm Hotchkiss MG in production
Photograph courtesy of John Schaefer