Pythos, in my experience the escorts are pinging as they protect the convoy all the time. I dont necessarily think you did anything "wrong" to give away your position necessarily. Its more likely that you found yourself in front of an escort and it was doing its routine ping that it does whether you are there or not and it found you. The key is to stay away from them and find a way to get close to the convoy without passing close to, or in front, of the escort. I have had the same thing happen to me even at the beginning of the war. After I realized I needed to change tactics it wasnt difficult. Figure out where the escorts are and make your way around them. Last night I saw a large convoy with several excorts and made my way in after the escorts in front had passed me, and before the escorts in the back were close enough to see me. Really torpedoed the hell out of that convoy, ended up with 40,000 tons. Also remember that after you get your first torpedo hit the escorts will be coming full speed. Sneak your way in, do as much damage as quickly as possible, get the hell out of there, and expect to be depth charged for a while before you finally get away. FUN FUN FUN!
