Oh! I might have misunderstood someone, but
I thought you (normally) can’t build ships into an enemy occupied zone.
A player could build a navy, attack a sub that’s in the factory zone and fail, the sub submerges in the battle and then the player couldn’t place the navy.
Also, I was warned that if the building player unwittingly attacked a sub that was in a zone next to the factory zone and the defender withdrew the sub to the factory zone that again that navy could not be built.
Pages 11 and 21, I would think not being able to place a navy would not even be super rare. I’m posting this only because you know the rules front and back and I’m trying to understand them





