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: Meridional Distances
    From: Chuck Taylor
    Date: 2002 Sep 17, 16:20 US/PACIFIC

    >
    > Although I have tables accurate to 2 decimal places for the Meridional
    > Parts, the Meridional Distances come only in whole degrees, so need to
    > be interpelated for in-between values.
    
    Peter,
    
    Bowditch has tables of Meridional Parts to quite a number of decimal places.
    The method for computing distances using Meridional Parts is called "Mercator
    Sailing" and is also described in Bowditch.
    
    The introduction to the tables in Bowditch gives a formula for computing
    Meridional Parts.  I have programmed this into a calculator.  One could also
    program it into a spreadsheet.  If memory serves me correctly (I'm away from my
    home library) there is a typo in the formula in Bowditch 95, but Bowditch 80/84
    Volume 2 has it right.
    
    Best regards,
    
    Chuck Taylor
    Everett, WA, USA
    
    
    

       
    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