Tier 2:
Mikasa:

76MM

51MM
Tier 3:
Kawachi:

76MM
South Carolina:

38MM
Konig Albert:

60MM
Nassau:

38MM
Tier 4:
Ishizuchi:

38MM
Myogi A & B hull:

57MM
Myogi C hull:
70MM
Wyoming:

51MM
Kaiser:
60MM
Nikolai:

38MM bulkhead

35MM deck

63MM deck
Tier 5:
Kongo:

Nothing
New York:

25MM deck
Konig:

20MM deck for whatever reason

60MM deck
Tier 6:
Fuso:

57MM deck
Arizona:

Nothing
New Mexico:

Nothing
Bayern:

60MM deck

140MM bulkhead
Dunkerque

Nothing
Warspite:

32MM deck

76MM deck

102MM bulkhead?

25MM internal deck.
Tier 7:
Nagato:

76MM deck
Colorado:

Nothing
Gneisenau

Nothing
Scharnhorst:

Nothing
Tier 8:
Amagi:

76MM deck
North Carolina:

Nothing
Bismarck:

20MM deck for whatever reason
Tirpitz:

Likewise 20MM deck
Tier 9:
Izumo:

38MM

51MM
Missouri:

Nothing
Iowa:
Nothing
Friedrich der Große

20MM

30MM

50MM

100MM
Tier 10:
Yamato:

Nothing.
Montana:

Nothing
Großer Kurfürst


