oh okay, that hydrophone would explain it. damn stupid me, thought that the torp was quiet enough with an e-engine. then i will probably use the steam powered torps. they r much faster so they have less time responding, right?
i cannot use the magnet pistol. i read some threads about it and it seems to be bugged. i take a look in the game files, the detection range should be 2 meters. increased it to 5, but the torp just miss, although it almost scratch off the painting...

am i missing something here?