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: Traditional navigation by slide rule
    From: Gary LaPook
    Date: 2016 Nov 12, 22:30 +0000
    That would be simple,just an "A" scale on the frame and a "B" scale on the slide to cover more than just one cycle and the second cycle could be cut off at "3" which would allow speeds from 1 to 30 knots and times up to 300 minutes, 5 hours, will handle time-speed-distance computations. Then a sine scale on the slide that is read against the "A" scale takes care of current triangle computations.


    From: Bob Goethe <NoReply_Goethe@fer3.com>
    To: garylapook@pacbell.net
    Sent: Saturday, November 12, 2016 5:58 AM
    Subject: [NavList] Re: Traditional navigation by slide rule

    If I can get on top of the fabrication of the 10" rule, I may create a simplified design and build a shirt pocket rule specifically optimized for solving the current triangle and doing speed/time/distance, for the helmsman to use without leaving the cockpit.

    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