Let me Introduce Myself

[Puster Bill]

Get away at slow speed if you can. Dive very deep.
Also, once they drop their depth charges you can speed up a little for a minute or two as they can't really listen with all those cans exploding.

I find it also helps to change direction and/or depth when you do that. I usually try and make a 90 degree turn (keeping mindful of other escorts, of course) when a destroyer is coming close, in conjunction with flank speed. That seems to work fairly well at keeping them from getting me. It works best with the Type II's, and fairly well with the Type VII's. Don't know about the IX's, and of course with the Type XXI's you can just outrun them...