Well, concerning the flooding of the
Musashi, the Yamato class had the 'designed' capability to correct a maximum of 13.8 degree list with just water pumps. When fuel is moved to tanks on the opposite side of the hull breach an additional 4.5 degrees could be added. Altogether, the Yamato class could theoretically return to an even keel from a list of 18.3 degrees. When the initial torpedo hit occurs, they gave the damage control crews an ability to reduce the flooding that occured to result in under a 4 degree list and 2.3 meter difference in draught fore and after within 5 minutes. A second torpedo hit would be controlled within 30 minutes according to the same standard.
Of course this is in a perfect situation but this simply shows that these ships were the best that Japan had to offer in design and innovation. This should be an example of a best possible result due to damage, not the rule.
Stability of the Yamato class was still good until it listed to 20 degrees. Trim capacity would enable the ship to function with freeboard forward reduced to 4.5 meters (std freeboard was 10 meters, amidships 8.6 meters, aft 6.4 meters).
In December of '43
Yamato was hit by a torpedo from the
Skate near Truk. 3000 tons of water flooded the upper powder magazine due to a small hold in the side armor joint. She made her way to Japan with this damage. This flooding was due to a documented design flaw that people were concerned about even before this incident but due to the unwillingness to modify the hull they left it as is until this occured.
I believe that the biggest issue concerning flooding in Japanese ships is that many of them were rather old. The newer vessels suffered due to bungles and or negligence. This was due to the fact that they were rushing production of ships to the very maximum of their production, many mistakes were made. The game does not model ship quality, damage control capabilities (for every class), or many other factors that make a seemingly good vessel fail in combat.
If the game isn't doing what you'd like then just remove Allied damage control. It's a bit overrated anyhow.[:'(]
