Convoy Attack Technique

[Paulebaer1979]

Originally Posted by Joefour

I am sure the depth limitations on launching torpedos has something to do with water pressure.

That´s right. We need blueprints from the subs to check the maximum depth. It´s dangerous to launch a torp at depth because the inner door of the torpedotube opens to inside the pressure hull. So the pressure of the water would open it or make it flooding if the sub is to deep with opened front door of the tube.

Originally Posted by Joefour

I bet that modern atomic subs don't have anywhere near the same limitations. I would search out a today's submariner and ask him. But if he told me then he would probably have to shoot me.

Even older and nonatomic subs can launch torps from depth deeper 100m. Class 206/206a were able to launch torps from 100m. That´s design depth for those subs. Class 212 can launch torps from design depth (250m), too. Both classes were build with nonmagnetic special steel which isn´t as strong as normal shipbuilding steel.
Class 209 and 214 (normal steel) can go deeper as 350m and i bet they can launch torps from that depths, too.