Hydrophone tracker
 

Hallo.
I'm (again) trying to get to grips with the four bearings method. I'm playing with the Hydrophone Tracker by Gutted.

http://www.subsim.com/radioroom/show...86#post1347786

Can someone explain the bit about "range on bearing 4"?
What range?
A step by step would be good....
I can get as far as entering the 3 bearings, then what?
Thanks All!!!