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: LAN curve parabola?
    From: Jim Rives
    Date: 2019 Nov 24, 07:28 -0800

    I used to determine position at sea on a Navy ship in the Pacific, using the standard of the time, the Nautical Almanac and HO 229.  What I found interesting doing these observations from a known position on land is how much we've been spoiled by GPS.   If I got a fix with a couple of miles of uncertainly in the middle of the ocean, it hardly shows up on a plotting sheet.  Drawing a fix on shore and it looks like huge errors!   Wonder what others' experience of accuracy of fixes is normally, or what is considered an "excellent" fix in terms of degree of confidence in location.   

    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