Talk:Equipment/@comment-24561831-20140606020550/@comment-24980562-20140606022438

Simple: Equip a DD or CL with two 12.7cm Twin High-Angle Mount (Late Model) (Urakaze Kai stock equipment). Since it's a main gun you get a Double Attack setup, and the reason it works against subs is most likely because the gun has ASW stats. As for the damage, the enemy fleet shown in the video is the FUCK YOU sub node on 5-3, which is a night battle node where subs have reduced armour by default.