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    Cannot dispense with the assumed position at sea
    From: Gary Harkins
    Date: 2004 Feb 18, 19:00 EST
    In a message dated 2/18/2004 12:20:32 PM Eastern Standard Time, jim2{at}jimthompson.net writes:
    Can we plot a celestial sight if we do not have a nearby "assumed position"?
     
    Yes!...3 CLOP's will have a common intersection at only one place on the face of the earth.  You can plot these using the GP's of the bodies as the center of the COP and the co-altitude as the radius of the COP.  An example of this is a problem used in one of the books I have.  It says that you are somewhere on earth and you take these 3 sights and gives the data (date, time, Hs etc....).  It then asks "where are you?"  At first glance many people think that this is an impossible problem.  However, the plots are possible, although a little cumbersome, because of the typical radius' involved.
     
     
    Gary Harkins C400 #140 "Cygnus"
    Website   http://www.hometown.aol.com/htycgary/myhomepage/index.html
    Harbour Towne Marina, Muskegon, Michigan Slip C-28
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