They pinging us means
they are getting your depth and current location
the best tactic, if you dont wanna get your submarine beeing a total mess is to wait till the pinging stop, then there will be a Message WASSERBOMBE!
now FLANK speed , change bearing and change depth, when you hear the explosions just go back to 2 knts and keep changing course, if your lucky the Destoyer will keep dropping Depth charges on the last known location.
also try to keep that Destroyer on a 0 or 180 Bearing so then you are on a low profile for the ASDIC to spot you.
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