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: SOA vs SMG or SOG
    From: Irv Haworth
    Date: 2009 Oct 23, 10:29 -0700

    Thanks you JOE
    Much appreciated. I had looked , all too briefly at the WX book but
    obviously missed the section on speed. Hopefully Jeremy will add a comment
    or two as well as George !
    73
    Irvin
    
    -----Original Message-----
    From: navlist@fer3.com [mailto:navlist@fer3.com] On Behalf
    Of joseph_schultz@rrv.net
    Sent: Thursday, October 22, 2009 11:23 PM
    To: NavList@fer3.com
    Subject: [NavList 10244] Re: SOA vs SMG or SOG
    
    
    Hi Irvin,
    
    You may be interpreting what you see on www.sailwx.info as vessel data.
    Looks to me like they're calculating from vessel submitted messages into a
    "readable" format.  Perhaps SOA was used by the website to differentiate
    from the reporting format that the vessel used.
    
    If you go to http://www.vos.noaa.gov/vos_scheme.shtml then on the left side
    is a PDF file called Observing Handbook No. 1.  This explains the standard
    format for weather messages sent to the U.S., among other good things (but I
    wouldn't trust their distance-to-the-horizon table).  The handbook has
    Course Made Good (CMG) and Speed Made Good (SMG) for the past THREE hours as
    reporting elements.  Nautical miles run is not an element.
    
    Good cloud and sea photos in that handbook, and a few weather rhymes to
    boot.
    
    Joe
    
    
    
    
    
    
    
    --~--~---------~--~----~------------~-------~--~----~
    NavList message boards: www.fer3.com/arc
    Or post by email to: NavList@fer3.com
    To unsubscribe, email NavList+unsubscribe@fer3.com
    -~----------~----~----~----~------~----~------~--~---
    
    

       
    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