At the distance of your picture (around 600m) you can’t miss even with a small speed error!
Be aware you should set your torp depth to 3 meters to avoid any malfunction (first years war)
Don’t shoot below 400m distance cause torp won’t arm itself. It need around 350m to arm.
Seeing your screen shot you are playing stock OM...
You should try my Dark Water mega mod
It’s OM based, but very much enhanced.
Click on my signature picture to access the thread...
Currently Dark Water version 3, but tomorrow i will upload awesome version 4
