NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Destination from course and distance
From: Doug Royer
Date: 2005 Feb 17, 15:15 -0800
From: Doug Royer
Date: 2005 Feb 17, 15:15 -0800
Can someone point me to spherical trig (great circle sailing) formulas for determining destination Lat & Lon, if given departure Lat & Lon, true course, and distance travelled? I have made stabs at trying to flip around the cel nav Hc and Zn formulas into what I'm looking for, but must admit the weakness of my math skills. I can't figure out how to get Lat & Lon out of it without already knowing one or the other. Thanks, -Jeff __________________________________ The formuli you need are in Bowditch Vol II in the earlier editions. Dutton's also has these formuli in the chapter dealing with the G. C. There are other volumns that have them also but I don't know which you have.
