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: Position errors for 2- and 3-body observations
    From: Bill Lionheart
    Date: 2017 May 17, 11:32 +0100
    The take home message from the maths is if the triangle is long and thin you are likely to be closer to the short side. 

    Bill Lioheart

    On 17 May 2017 02:05, "Randall Morrow" <NoReply_Morrow@fer3.com> wrote:

    I have to tread carefully because I am likely the weakest mathmetitcian that ever posted here. There have been several posts about errors in the "cocked hat" and like this one, all over my head. Pun intended. But to my point. I have done over 6000 sights with an artificial horizon and always used the obvious center of the hat triangle as the fix. It is always within 5 miles or so of GPS. There is uncertainty of course, but in mid ocean, does it matter? If it's within 10 miles you're OK. Right? 

    Regards, Randy

    View and reply to this message

    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