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Old 03-11-10, 09:52 AM   #2
Didd
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Join Date: Dec 2009
Location: Orkney
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There was an excellent thread on this a short while ago, outlining a technique whereby you could determine course, speed and range (without counting rpms) and even shoot blind (target id may be an issue though).

There was a video if I remember rightly. I've got a pdf of the technique if you are interested.

Here's the link to the thread:
http://www.subsim.com/radioroom/show...ght=hydrophone
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