Talk:Prototype 51cm Twin Gun Mount/@comment-189.26.45.213-20150208050940/@comment-25784159-20150209074638

actually, there are almost no reason to put this on yamato-class

2 46cm (which fit yamato-class) + their already top-tier firepower is better because daytime damage softcap at 150 (even with head-on engagement (80% modifier), 139+26x2+9 (type 1 AP) = 200, 200x80% = 160, still pass the cap ), put 51cm may give them an accuracy penalty while their damage doesnt change much.

in yasen, it's just 4 more firepower

meanwhile, proto 41+51 = 2x 46, proto 41+51 give 3 accuracy bonus (which can partly reduce the penalty) while the latter give more penalty with 0 accuracy bonus

proto 41 + 51 + type 1 AP = 160 FP, still lower than the 150 cap with head-on engagement