NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Sensitivity of Mercator sailing to round off error in course
From: Bill Murdoch
Date: 2001 Apr 30, 5:11 PM
From: Bill Murdoch
Date: 2001 Apr 30, 5:11 PM
In a message dated 4/30/01 6:04:16 PM Eastern Daylight Time, george@HUXTABLE.U-NET.COM writes: > I'm not competent to compute the correction for a standard Earth ellipsoid, > but > The 1987 edition of "Admiralty Manual of Navigation, Volume 1, General Navigation, Coastal Pilotage" has sections beginning on page 93 titled Spheroidal Rhumb-Line Sailing and on page 97 Spheroidal Great-Circle Sailing. In addition to the formulas, there is included a worked example and a table comparing meridional parts, course, and distance from one location to another calculated on a sphere and on a spheroid. Bill Murdoch