The only true way to find out what can a non-damaged hull take, is actually doing it. But I don't think german skippers would just dive to 300m just to be sure it can take. It doesnt mean it can't. The only reports we have, are those from uboats that had flooding and went near 300m until they managed to start going up again.
I do believe that uboats with a inctact and perfect hull can reach 300m, yes. Just there's no how to prove it.
__________________
To each his own
|