I gave new id numbers to the torpedo doors nodes and voilą,
an axis side submarine with 8 torpedo tubes, this means probably that the
game's
maximum number of tubes per boat is 10, either US or german/japanese side.
Keltos
8 tubes sub, soon to become a Kaidai 3 :
http://files.filefront.com/IJN+Jyuns.../fileinfo.html