IIRC, this is a known bug. You can hear if you man the hydrophone yourself, but your sonar guy can't.
This is why when under attack I'm standing at the hydrophone station so I don't loose track of what's going on, specially if there are 2 or 3 destroyers looking for me. (of course I play without external views...)

Regarding hydrophones..is there a tutorial for hunting a ship a ship via the hydrophones using the stock version of the game?

Not that I'm aware of but it would be pretty easy, all you need do is plot the position at the end of each direction line at periodic intervals then run a line through them.....that will give you the mean course.

^
Thanks!

You could try searching for one: http://www.subsim.com/radioroom/show...nting+tutorial

Theoretically you can do this with Stock Sh3. Except it is tricky to do if you don't have the (reversed) bearing scale attached to the mousecursor.

You can enable this mod-let with JSGME on any SH3 flavour I think, eventhough it was based on a mod for GWX:

http://www.subsim.com/radioroom/show...postcount=1308