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    Re: Jack London: author and navigator
    From: Greg Rudzinski
    Date: 2021 Dec 20, 14:52 -0800

    I am willing to bet that Jack London was trying to mark the exact time of LAN for longitude with a single observation rather than splitting the difference of times of equal altitudes before and after LAN.  Since the Sun hangs for several minutes around LAN then a degree or two of longitude uncertainty would not be surprising. This may account for the unexpected 80 NM  difference in position vs. DR by Log that he describes.

    Greg Rudzinski

       
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