There are issues with the 76mm underwater armor of the Lu'ao battleship

[fashangfashang]

As shown in the picture, the 76mm armor underwater can be penetrated by a 152mm shell with a penetration depth of 96mm, with an equivalent depth of 200mm+

[fashangfashang]

I think this is because the modeling of the in-game ammunition depot is greater than the modeling of the armor box, which leads to
我认为这是由于陆奥号战列舰的弹药库建模大于装甲盒建模导致的，使得炮弹在无法击穿装甲的情况下依然可以对弹药库造成伤害

[Hisui_Soseki1218]

Certainly the ammunition magazines under the first turret seem to have hit points protruding from the armor.