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post #27 of Old 02-23-2010
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Originally Posted by wwilson View Post
A + or - 2˚ compass sighting of an object 1nm away is pretty good on flat water and unobtainable on a pitching deck. That alone can produce 47 meters of error!
I guess the point that I would make is that if you have something that is 47 metres away, you should have no interest left in the chart - only in whatever is 47 metres away!

There is an old adage that I have always applied to navigation - "You are NEVER where you think you are". As far as my navigation goes, if there is something near me that represents a danger to me, nothing beats a look out the window.

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