adding deck guns and AA guns

[sirethar]

Hello All,
I just would like to add one deck gun and one or 2 AA guns to a submarine.
Nothing particular, i'm going to use the standard guns.
What i don't know is what is the file where i should put these informations.

Is it very difficult to do?
The submarine i was going to add deck guns and AA guns is the typhoon class.
I know that doesn't make sense, but during game play i need one 1-2 deck guns and 2 AA guns!
Thank you!