Help me shoot AFT torpedo with manual TDC

[Siinji30]

Is there any precautions I have to take when using the AFT torpedoes? I´ve been practising the torpedo tutorial. I have no problem hitting the cruiser every time. But there are 2 small merchants sailing behind me. I have tried hitting them using my aft torpedoes. But they do not hit at all, and the TDC shows weird numbers. Like the boats where on the other side, and the TDC moves so fast like it was an aircraft i was tracking

Sometimes when I shoot the aft, the torpedoes do a complete turn, and point towards the cruiser. And I have not locked the PK on the cruiser at all...didn´t even look at it.

I can not really explain exactly how the TDC moves, but it moves totally wrong, and if I can recall, the AoB shows me on the other side of my target, even if I have set the AoB correctly.

I think I understand how the TDC and the PK works with the cruiser, but can´t understand why it doesn´t work with my aft targets.