Welcome to the NavList Message Boards.


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

Compose Your Message

Add Images & Files
    Examples of cocked hat far from equilateral
    From: Bill Lionheart
    Date: 2019 Feb 4, 10:07 +0000

    I was planning to make a video to go through the construction of the
    symmedian point (most probable point)  and a probability ellipse using
    ruler and compasses. I thought I would record of a "visualizer" that
    we have in lecture rooms.
    To show it to good effect I thought it would be good to have a real
    example of a fix from three celestial bodies with the azimuths such
    that the triangle is very much NOT an equilateral triangle.
    To make it simple I would prefer them to be at approximately the same
    time instead of a running fix, as a running fix would have greater
    I am on land at the moment and it is very overcast. I thought an
    option would be to do three observation of the sun with an artificial
    horizon at different times. Perhaps that is a better option, but I
    thought it would be neater to do it with a more realistic example.
    A published example in a book on cel nav might be  a possibility, as
    long as it was n't "rigged" to be close to equilateral!
    Thanks in advance for any suggestions.
    Bill Lionheart

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    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 Settings

    Posting Code:

    Custom Index

    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