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    Re: Precomputed LOP for sailboat landfall
    From: George Huxtable
    Date: 2009 Feb 22, 23:16 -0000

    NOB158 (wish he gave us a name to call him by) wrote-
    "Would somebody please help me with better understanding of method of
    landfall by using precomputed LOP. I was reading about using this
    method for sailboat landfall in John Karl�s book "Celestial Navigation
    in the GPS age" (published by Paradise Cay, 2007). I would like to
    discuss the Figure 10.5b (page 140) where I think the mistake was
    made. Specifically, it is not clear how Hc of 75 and 81 degrees for
    LOP 2300 UT resulted in 6 nm intersept. Can somebody clarify it?"
    I think he has found an error here, in which degrees have got confused with 
    minutes. I understand that John Karl is in the throes of a revision, so I 
    will alert him to this one.
    contact George Huxtable, at  george@hux.me.uk
    or at +44 1865 820222 (from UK, 01865 820222)
    or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK. 
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