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: The Appleyard Course and Distance Computer
    From: Adrian F
    Date: 2019 Apr 17, 14:06 -0700

    I ought to set the record straight. In my post of 11 March 2019 about the Appleyard Course and Distance Computer, I said :   > " I see that the Imperial War Museum in the UK holds a 4-page document from 1918, “Description and use of the Air Speed Computer designed by Commander Rollo Appleyard R.N.V.R."

    I have now viewed this document and it does not seem to be about the course and distance computer.  The document concerns a different device that Commander Appleyard designed, intended to give an approximate true air speed based on the indicated air speed and altimeter height. 

    Adrian F

    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