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: FW: Re: Chronometer Suggestions
    From: Bill B
    Date: 2009 Jan 10, 04:36 -0500

    > From: "Peter Fogg" 
    >
    > On Sat, Jan 10, 2009 at 18:31,   wrote:
    > And here is the simple answer. If, where he is sailing, he can
    > tolerate a one minute of longitude error all he needs is a watch that
    > is accurate within 4 seconds. If sailing in the middle of the ocean
    > more than fifteen degrees of longitude away from any danger you can
    > use a watch with a one hour error.
    >
    > Hmm.  The assumption that the purpose of position finding is to avoid danger
    > may obscure a more important reason for the activity.  I propose that the main
    > reason for deriving a position, particularly when well away from land, is to
    > find out in what direction the destination lies.  Depending on how far away
    > that destination (or waypoint) may be, an hour's worth of time error could
    > make a great deal of difference to the correct heading.  And if the error was
    > consistent, which it presumably would be, could lead to the poor sailor
    > becoming altogether lost.
    >
    > Tell us you're pulling our leg, Gary ...
    
    I suppose the the old Bob Dylan lyric, "You don't have to be a weather man
    to know which way the wind's blowing" would not have any connection with
    position, typical wind velocity and direction, currents, and location? Heck
    no, you could be off by hundreds of miles and still catch a ride on the Gulf
    Steam. Why do those silly chart makers even put the seasonal information for
    the nominal wind direction and velocity on the charts? A waste of good ink
    IMHO. 
    
    Bill B.
    
    
    --~--~---------~--~----~------------~-------~--~----~
    Navigation List archive: www.fer3.com/arc
    To post, email 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