NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: leg56. Chart vs formulas
From: Andr?s Ruiz
Date: 1999 Jul 16, 09:56 EDT
From: Andr?s Ruiz
Date: 1999 Jul 16, 09:56 EDT
Yes, this?s true, but I think that Rhumb Line is only the line on the surface of the earth, ( spherical or oblate), of a Mercator Sailing, also called loxodrome >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. > Andr?s Ruiz e-mail: aruiz@XXX.XXX http://www.geocities.com/CapeCanaveral/Runway/3568/index.html