NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Allowing for current. was: Re: Noon sun fix example
From: Peter Fogg
Date: 2009 Oct 1, 10:25 +1000
From: Peter Fogg
Date: 2009 Oct 1, 10:25 +1000
Hear hear DD. Apart from anything else, with a sailing boat it is often not possible to lay off a desired course and keep to it, since the wind may not oblige.
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On Thu, Oct 1, 2009 at 9:54 AM, <douglas.denny@btopenworld.com> wrote:
Another fine theory in principle, that does not work out practically.
Even when allowing for tidal streams every half hour with the DR plot as I used to do, there can still be differences appearing which make the passage lop-sided as you cross, but one thing is certain - this gives a much better end result than a 'straight ahead' strategy over the tidal cycle. There are too many variables for such a simplistic approach.
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