You all talk about low speed.
How about electric torpedoes?
I tried them and didn't get a single hit.
Also, the displayed depth is false.
Example: (Ship auto-identified)
Displayed depth 7.3m, electric torpedo
Torp set to 8.1m - direct hit
Torp set to 10m - very close direct hit
Torp set to 11m - Torp 1m under keel, no detonation
Any solutions?
Edit: Just had my first hit with a steam torpedo set to slow and M-Pistol
Since electric torpedos have and only 1 speed and it's to fast for M, we can simply forget them
But the displayed depth is still wrong