Shimakaze's armament and wartime defensive additions

The main battery is described as six 127 mm Type 3 guns in three twin turrets, identified here as dual purpose. The initial light battery is given as six 25 mm guns in two triple mounts, alongside fifteen Long Lance torpedoes and eighteen depth charges. Later changes replaced machine guns with more Type 96 25 mm weapons, reaching a quoted total of twenty-eight by the end of 1944. Depth-charge capacity increased to thirty-six while the torpedo battery remained. A complement approaching three hundred adds a manpower consideration to this concentration of weapons. The initial light-gun designation is unclear in the captions, so its exact model cannot be established from that phrase alone.