Here is an active sonar mod I tweaked for the escorts. It adds "some" challenge without getting absurd. I just added to the stock ranges and tweaked the sensitivity and little (very little). It works with GWX. Not sure how it would work with other megamods. JSGME ready.
http://www.mediafire.com/file/5dc332...ar_Mod.7z/file
Weather is a factor as usual--rough seas=bad sonar performance. Good weather=more challenge. "Keep them in your baffles! Don't give them a broadside profile!"
My first time using mediafire so I hope I got the share set correctly.
EDIT: I left the late war Type 147 sonar as is. It's tough enough!