Is there a max playables?
 

Hi, I found this today, it seems nine playables is the max, anybody who can confirm?

Updated:

Sonalysts told me a max of 30 playables should be possible.
Because my start map was full of mines and buoysfields and other stuf, I decided to make a brand new one with only playable subs, 12 of them.
Result in single player and in multiplayer, 9 (nine) are playable?:-?

Before i get back to Sonalysts, can one of you do someting likewise (map with more then nine playable subs), and post your outcome here please?