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
    Name or NavList Code:
    Email:
       
    Reply
    Re: Datums: why a place has more than one lat & long
    From: David Pike
    Date: 2015 Mar 9, 05:13 -0700

    Your nautical chart might well be in a different datum possibly, NAD 83 or NAD27 Canada. If you apply any corrections listed on your chart to the GPS position measured in your drive, you may well find that its position on your chart is now correct. Alternatively, read the datum used for your chart, and apply that to your GPS set. The position obtained should also come very close to the position of your drive on Google maps.

    On re-reading http://fer3.com/arc/m2.aspx/Datums-why-place-has-more-than-one-lat-long-DavidPike-mar-2015-g30602 , I think I screwed up.  Surely The last two words should surely read 'your chart.' Dave

     

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

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

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

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

    Email Settings

    NavList ID 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