Talk:Isuzu/@comment-69.110.1.121-20140724104758/@comment-73.178.27.72-20140728085639

You're never going to get an official damage calculation. All the combat mechanics are just copied from the JP wiki. And they are just player generated after testing.

対潜攻撃
基本攻撃力 = floor(素の対潜 / 5) + 装備対潜 × 2 + 攻撃別補正 　（floorは切り捨ての意） 攻撃別補正： 爆雷orソナーでの攻撃→25、航空機での攻撃→10

Anyway sub basic attack power caps at 100 so under parallel/green T they should perfrom pretty much the same and RNG with crits/armor will be the only real difference in damage. Yuubari should pull slightly ahead if you're not using line abreast or get head-on engagement.