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    From: Gary Harkins
    Date: 2003 Feb 9, 11:02 EST
    Here's a little twist for you...Tell a GPS chartplotter to plot a course on a long voyage (say from Maine to England).  What do you think the results will be?  It will show you a rhumb line on the screen, but the course it will tell you to follow will be the initial course on a great circle route.  If you interface it with an autopilot it will indeed follow a great circle in spite of showing a rhumb line.  This quirk has caused a few problems, particularly amongst the group that believes you can put unending faith in the little box!

    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)

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