[Jaman]

Where are you trying to attack that ´39 convoy?. Let me guess, east British coast, isnt it?. Dont try, in so shallow waters its imposible to evade the enemy sonar, not matter what you try. If you still feel the need to engage, try attacking at night from long range (>=3000m) so you still have the time to turn around in the surface and run while the escorts go berserk trying to find you.

If you are trying in deep waters (>100m), just move deeper, keep changing course and depth while follow the manouvers that you can find on the manual. Eventually you´ll get of the hook.

Dont give up on GWX yet, its a great mod.

EDIT: Be careful about what i said on night attacks and surface escape, if an escorts fire a flare on your direction, you´ll be toasted. To avoid this keep the hull down the water and show only the turret on surface, also while moving like that stick to 1/3.