It's not official but:

-2 quality guns are the ones that used huge quantities of brown powder to fire (such as the British 13.5" Mk I). They can be adapted to use smokeless powder, but it's not efficient (the aforementioned 13.5" gun went from using 630lbs of brown powder to 187lbs of cordite ...

Even later, a 4" DP tertiary battery will supplement my 5" DP secondary guns.


Having multiple HAA batteries can actually reduce your HAA factor. This can be seen in the ship designer. While large batteries can overcome the reduction, it may be more weight efficient to just have a larger ...