''It has a structure suitable for mass production and is highly economical. It is an improved version of the high-angle main gun for ships, which was mounted on late-production coastal defense ships and fought against enemy carrier planes such as Unka.<br>This one is an upgraded "what if" single-mount high-angle gun that has been matured as a dual-purpose gun, ideal for small ships, with an improved ammunition mechanism, greatly improved shooting speed and responsiveness, and has a higher potential with upgrades.