Quote:
Originally Posted by Shkval
my following question is: is it possible to get range from AOB and true course... without moving the sub? without triangulation?
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True course, yes, true range no.
You have to understand what the soundman is telling you and what your drawings tell you:
(1)soundman rounds the bearing:
True 359.5° = 000° for the soundman
and
True 000.4° = 000° for the soundman.
(2)The arcs in the drawings are rounded:
True 359°30' arc = 000° arc in your drawing
True 000°29' arc = 000° arc in your drawing
etc.
With these 2 facts in mind the
laws of probability says you have a 0.0000000007715 % possibility to get all your 4 bearings and all 4 arc drawings at once error-free on you nautical chart ...
See also
http://www.subsim.com/radioroom/show...light=bearings