I have one question. In the original post you said that if you are sitting still waiting for a convoy and get pinged you probably stayed in one place for X number of minutes inside the sonar cone of a DD right? I guess I'm just curious, if you are submerged and dead quiet, how are they knowing to ping you in the first place? Do they just ping ever other minute to see if something is there all the time? Guess thats one thing I never understood, if I'm at a dead stop and submerged and get pinged out of nowhere, how did they even know to ping, they didnt know I was there to begin with. Hope that makes sense.
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