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
    or...
       
    Reply
    Re: Irregular Quadrilateral Center
    From: Geoffrey Kolbe
    Date: 2015 Feb 6, 09:43 +0000
    In her book "Navigation for Yachtsmen", Mary Blewitt reduced the problem of 'many' position lines by bisecting position lines which were roughly parallel. In this way, 'many' position lines could be reduced to two, and your position is where they cross. Admittedly, this is a somewhat subjective procedure and it can be called part of the 'art of navigating'. But I have found it an effective procedure.

    Dr Geoffrey Kolbe, Riccarton Farm, Newcastleton, Scotland, TD9 0SN
    Tel: 013873 76715
    Mob: 0773 8069 663

    On Wed, Feb 4, 2015 at 7:36 PM, Greg Rudzinski <NoReply_Rudzinski@fer3.com> wrote:

    How would a navigator properly determine the center of an irregular quadrilateral formed by 4 LOPs ?

     

    Greg Rudzinski

     

    View and reply to this message


       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    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:

    Email Settings

    Posting 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