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
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)
From: Gary Harkins
Date: 2003 Feb 9, 12:52 EST
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)
