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
    Re: Short term magnetic anomalies
    From: Don Seltzer
    Date: 2017 Sep 6, 08:39 -0400
    On Tue, Sep 5, 2017 at 2:23 PM, Bob Goethe <NoReply_Goethe@fer3.com> wrote:
    ... when out of the sight of land the prudent sailor might determine the azimuth to a celestial object and verify the variation at his current location from time to time, even if he has in hand a chart with magnetic contour lines indicated.

    I believe that was part of the daily routine aboard naval vessels 200 years ago, using the sunrise or sunset.

    'The pilots now their azimuth attend,
    On which all courses, duly formed, depend .
    The compass placed to catch the rising ray,
    By this magnetic variance is explored,
    Just angles known, and polar truth restored...

    - William Falconer

    Don Seltzer

    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