The loadout problem: It has no tubes to put torpedoes in, only internal storages. :-)
That is, in the loadout screen, in the game itself (during the mission) it has...
Btw, could you please change the descriptions of the torpedoes? It makes me nervous to have a description like 48-50 knots, I want to know if it is 48 or 50, the japanese Kaleuns surely did