NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Gps
From: Gary Harkins
Date: 2003 Feb 9, 12:52 EST
From: Gary Harkins
Date: 2003 Feb 9, 12:52 EST
In a message dated 2/9/2003 12:31:36 PM Eastern Standard Time, pboucher@LAVOILE.COM writes:
I've done this on 5 different brand names of GPS chartplotters and I'll guarantee that they show a rhumb line but follow a Great Circle. I told these units to go from Grand Rapids, Michigan to Yokohama <sp> Japan. This should nearly send you over the pole, which is what the GPS indicated based on it's initial course. However it drew a line from Grand Rapids straight west at the same latitude through the States and across the Pacific Ocean to Japan. ALL units tested did the same thing!
Gary Harkins C400 #140 "Cygnus"
Website http://www.hometown.aol.com/htycgary/myhomepage/index.html
Harbour Towne Marina, Muskegon, Michigan Slip C-28
Harbour Towne Yacht Club, Life Member
C400 National Association
United States Power Squadrons-JN
NRA Life Member
MCRGO (Michigan Coalition for Responsible Gun Owners)
JPFO (Jews for the Preservation of Firearms Ownership)
If you zoom
out your plotter screen to the maximum, you will clearly see a curve in the
plotted course.
I've done this on 5 different brand names of GPS chartplotters and I'll guarantee that they show a rhumb line but follow a Great Circle. I told these units to go from Grand Rapids, Michigan to Yokohama <sp> Japan. This should nearly send you over the pole, which is what the GPS indicated based on it's initial course. However it drew a line from Grand Rapids straight west at the same latitude through the States and across the Pacific Ocean to Japan. ALL units tested did the same thing!
Gary Harkins C400 #140 "Cygnus"
Website http://www.hometown.aol.com/htycgary/myhomepage/index.html
Harbour Towne Marina, Muskegon, Michigan Slip C-28
Harbour Towne Yacht Club, Life Member
C400 National Association
United States Power Squadrons-JN
NRA Life Member
MCRGO (Michigan Coalition for Responsible Gun Owners)
JPFO (Jews for the Preservation of Firearms Ownership)
