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: Advancing LOPs for precision fixes
    From: Peter Fogg
    Date: 2010 Feb 24, 13:39 +1100

    Gary LaPook wrote:
    Since I had time on my hands I sat down with my calculator and computed a "Motion of the Observer" correction table for the speed range of 1 to 12 knots which I have attached.
    Thanks for this, Gary.  My electronic nav calculator includes correction for change in observer location but now I have a manual method, and am grateful to you for it.  I agree that for best accuracy this effect should be accounted for, although in the case of a small sailing boat with an average speed of about 3 knots the accuracy difference under average conditions would seem to be minimal, as errors due to observations being made from this unstable platform close to the sea surface tend to swamp the much smaller error effect due to change in the boat's location. 
    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