NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: leg56. Chart vs formulas
From: Dan Hogan
Date: 1999 Jul 16, 09:36 EDT
From: Dan Hogan
Date: 1999 Jul 16, 09:36 EDT
Mercator Sailing:
Provides a solution to the plot as made on a mercator chart. Uses
meridonial differences and difference of longitude in place of
difference of latitude and departure, respectively.
Rhumb Lines:
Maintains a true direction. Makes the same angle with all meridians
it crosses. Maintains a straight line on a mercator chart. The
difference between the Rhumb line and the Great Circle connecting two
points increases as (1) as the latitude increases, as the difference in
latitude between two places decreases, and (3) as the difference of
longitude increases.
>I don't know what is the difference between mercator sailing and
>rhumbline, for me is the same ??
Dan Hogan
dhhogan@XXX.XXX
