well 2nd patrol last night.
i wanted to practise my skills using torps so i was attacking tramp steamers the ones that cant fight back
i used all but 5 of my fish sinking numerous tramps.
then with no warning i hit an un reported conyoy with a couple of DD`s escorting.
i managed to sneak close to the convoy bout 2000m i fired 4 fish all of them exploded early
of course then the DD`s came looking for me, i never heard 1 single ping from them at all but they knew where i was even though i d dived to 210m and 2knts silent running they DC me to hell and back but only took slight damage.
i was attacked my dd`s twice but i never heard one ping they still knew where i was so whats the crack with this??