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    Re: Azimith forumula for Great Circle sailings- having problems
    From: Samuel L
    Date: 2014 Dec 25, 03:56 -0800

     

    Dave,

    Bowditch can be found here;

    http://msi.nga.mil/NGAPortal/MSI.portal?_nfpb=true&_pageLabel=msi_portal_page_62&pubCode=0002

    Here's the information you're looking for;

     

    Bowditch Chapter 24, The Sailings, page 347 shows the procedure to obtain distance and initial bearing between 2 locations using HO 229.

    Bowditch Chapter 22, Calculations and Conversions, page 332 gives the distance and initial bearing formula.

    The man at the link below mentions a formula for calculating distances and bearings between 2 places on earth.

    http://www.madinstro.net/sundry/navcel.html

    Sam L.

       
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