DM-
Not to be pedantic, but there are battlefield conditions and there are battlefield conditions. From the accounts that I have read (and I admit, I am not a complete expert in this field), it took the Japanese about an hour and half to reload- while not being shot at. That means they were not moving at flank speed, not doing erratic manuevers, and not being shot at. Given that the torpedoes had to be lifted from the horizontal, and then dropped into vertical mounts, that makes sense.
So I guess what I'm saying is that to give the IJN complete reload capability, with no conditions to be met, is a bit generous. Either they have one shot, or you say that reloading is subject to certain conditions- move at half speed, no special actions, etc. Or, make reloading subject to a special action check- Difficulty 10+, again subject to moving at half speed etc.
Also, the above doesn't take into account the issue that in the rules, the IJN has several reloads available to them, instead of the one that they had on board.
Right now, the way rules stand, the 'infinite reloads' of the IJN is ahistorical and down right unbalanced. A 'fleet' of IJN destroyers is monstrous- and ahistorically so.
Cordially;
Darilian