[Raf1394]

I always learned with other subsims. Is that when depth charges are exploding. The escorts loses there ASDIC contact with you for a short amount of time.

Its like a window you have to escape, and go full speed away from the escort without them knowing it. I don't know how it works in GWX.
Becomes harder when you are getting attacked by 2 or more escorts. One of them will always try searching you, or listening/pinging you, while the other attacks. I think you can still go flank speed while the depth charges are exploding. But you really need to time it well to lower the speed straight after.

Escorts can really pick your engines sounds up. The best way should be to count how many splashes there are. So you can know when the last depth charge will explode, during the last explosion you can lower speed. But this is kinda hard to do in game lol.

There is also a big difference with escorts hunting you with there Hydrophone (passive) and ASDIC (active)
When your engines are turned off, or going dead slow/silent speed. The enemies hydrophone can't hear you, or very hard.

With ASDIC pinging. They can still ping on your hull and detect you, even when your engines are completly turned off.