Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re: Lindy Line
    From: Walter Guinon
    Date: 2002 Dec 6, 06:39 -0800

    George H has the right idea, Bowditch gives his approach as an approximation to
    the shortest distance. Howerver the shortest path, subject to a maximum
    Latitude, is given by a GC thru the departure point that is tangent to the
    limiting parallel, then along the parallel to another GC thru the destination
    point and which is also tangent to the limiting parallel.
    
    When this approach is studied on a gnomic chart the extension to arbitraty
    curves which exclude certain areas (e.g. land) seems clear.
    
    __________________________________________________
    Do you Yahoo!?
    Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
    http://mailplus.yahoo.com
    
    
    

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.
    Email:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site