The shell piercing through the thick armor it should not have penetrated is definitely a disaster

It is one of the major naval bugs that popped up after the update. They seem to now be aware of the bugs and are fixing it. Hopefully soon…

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And this bug is very random. Taking Kongo as an example, its upper armor belt has an equivalent thickness of less than 0.5 of the original thickness, while the armor equivalent of the turret is completely normal. The equivalent thickness of the main armor belt is about 0.8 of the original thickness. Gaijin, are you really not considering this as espionage?

Other ships also have the issues I mentioned above



the IJN Ise



the Mikhail



Poltava


This bug is not relevant to another bug where shells ignoring armour in naval battles. This one is solely related to protection analysis and specifically the “simulate a shot” feature. You can even penetrate Jumbo’s UFP with 85mm BR-365 beyond 2km in protection analysis, that doesn’t happen in actual gameplay.

Both bug is now in progress of fixing.

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Is the Mutsu being fixed too? As of right now, the casemate gun shields have no armour at all, and the upper casemate gallery has no gun shield OR side armour.

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She never had any in the first place.

I don’t know if it’s completely fixed/the final version of the Mutsu now, but I survived a huuuge amount of time during EC just 2 hours ago. Attacked from 2 sides, several destroyers and cruisers at once, torp got me at the end (after like 15 minutes of heavy brawling). Right after that I spawned back and same thing. Was quite a blast to be honest. In RB I experienced so much bs, not tried out yet how she performs there.

Yes, they did. The gunshields on the casemate guns are literally there on the model, but do not have any armour value assigned to them, despite having 25mm gun shields, just like on other Japanese casemate guns on their other BBs.

Whitley, M.J. (1998). Battleships of World War II. Annapolis, Maryland: Naval Institute Press, page 200.

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Her official armour plans do not assign armour values to the casemate guns, unfortunately.

And yet, they are exactly the same casemate guns, gun shields, and layouts as the Ise and Fuso classes, with their lower casemates having 152mm side plating + 25mm gun shields, while the upper casemates had 25mm splinter plating + their gunshields. This is ignored in her “official armour plans” because those were basically being lifted from the prior classes. If you look at ANY source studying the Nagato however, they clearly note the casemate armour. Indeed, if you look at the documentation of the classes’ tonnage calculations, the secondary battery armour IS included in those tabulations.

You are free to show us where that supposed “armour” is on this section:

I mean isn’t casemate gun from Mutsu is some museum in Japan? I am looking at the NavWeaps page and it has photo of it there and I can quite clearly see gun shield there.

Come on the mounts are almost the same as on Ise.

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I have only one secondary source that says the shield was 1.5", but without a second source, you can’t do anything about it.

And in all honesty, it wouldn’t make any difference since overpressure doesn’t case about armour thickness.

Yes, it is, and you can very much see the gun shield.

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Considering that is only showing the main belt and deck armour, it’s not listed there. You can, again, see it in the tabulation of the tonnage data right here, under “battery”:

https://iiif.dl.itc.u-tokyo.ac.jp/repo/s/hiraga/document/54922684-8034-455c-b69c-dcce6228dc15#?c=0&m=0&s=0&cv=2&xywh=-659%2C0%2C8261%2C4927

I will also note again- the gun shields are LITERALLY modeled ingame. The lower gun battery has some armour protection, but for some reason the gun shield armour is not modeled, even though it very much exists, as you can see it. With your eyeballs. Like, it is literally right there. I can also post a photo of an actual casemate gun with its gun shield taken off the Mutsu where you can clearly see the gun shield is not, in fact, made out of paper.

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That document refers to one of the preliminary plans for Nagato, so that’s not useful here.

Otherwise, feel free to report the issue here:
https://community.gaijin.net/issues/