 They fired projectiles at a rate between 8 and 14 rounds per minute at a muzzle velocity of ; at 45°, this provided a maximum range of , and a maximum ceiling of .They also had eight 2.5 cm Type 96 AA guns like "Taiyō".In early 1943, the four twin 2.5 cm mounts were replaced by triple mounts and varying numbers of additional Type 96 guns were added.