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    Re: Error ellipse proportions
    From: Tom Sult
    Date: 2017 Jun 11, 12:41 -0400
    What are people seeing when doing fixes from small sail boats in racing conditions in a good blow? I'm generally happy if I get within 5 miles of GPS. Now make the rhombus with 5 mile wide corridors. Celnav is not for lacing though reef infested waters. That should be done in daylight with "mark 1 eyeball" and GPS if available. 

    Tom Sult, MD
    Author: JUST BE WELL (goo.gl/jUbWIX)
       
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