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: Sextant accuracies
    From: Rodney Myrvaagnes
    Date: 2003 Mar 17, 17:11 -0500

    When you are close to shore you must do pilotage, which precludes
    waiting for opportunities for celestial sites.
    
    That doesn't mean you couldn't use a sextant. You just have to turn it
    on its side. The angle between two charted objects generates a good
    circular LOP. A three-legged protractor can be used if you can see
    three charted objects.
    
    It seems to me the accuracy you need from celestial is just enough so
    you won't sail past the smalles island you might go to. 5 miles should
    be more than good enough.
    
    
    On Mon, 17 Mar 2003 15:24:45 -0500, George Istok wrote:
    
    >
    >In the middle of the ocean, thousands of miles from anything, an error of
    >five nautical miles seems insignificant.  Close to shore, even one tenth of
    >a mile is significant.  Is the sextant an "off shore" device that should be
    >used only when high accuracy is not required?  A what point does one switch
    >from off shore to near shore navigation devices?
    >
    
    
    
    Rodney Myrvaagnes                                   J36 Gjo/a
    
    Chicken hawks unite! Your children won't go anyway.
    
    
    

       
    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