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    Re: Finding Latitude at Sea from Two Altitudes of the Sun and a Possibly Incorrect Watch
    From: Robin Stuart
    Date: 2016 Aug 27, 13:10 -0700

    David,

           Here's a derivation of the formulas behind the method given in the New Practical Navigator. If hope that it is verbose enough to make it possible to follow along with the examples given. If not please let me know,

    Regards,

    Robin Stuart



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