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
    Name or NavList Code:
    Email:
       
    Reply
    Re: help with sun sights
    From: Alan S
    Date: 2011 Jan 15, 15:12 -0800

    Patrick:

    Re use of H.O. 229 for sight reduction, one can certainly do that, though the six volumes, if one obtained all six are real space burners, to say nothing of their cost. Of course they are available for free on-line, though the on-line versions of such tables seem to me to be much less convenient to use than are printed tables. How does one make margin notes looking at a computer screen? Shades of a cartoon I saw many years ago, on the subject of computer aided drafting/design, entitled Agi Cad, but that's another story. By the way, the U.S.C.G requires demonstrated "proffiency" in sight reduction using 229 for licensing of ship�s officers, as I understand.

    Given however, that 229 requires messing about with "assumed positions", sight reduction using the Law of Cosines in conjunction with the Daily Pages of the NA seems simpler, and more direct, this being my take only.. Of course, there is nothing wrong with being conversant with multiple methods of solving any given problem, the more, the merrier being perhaps appropriate..

    ----------------------------------------------------------------
    NavList message boards and member settings: www.fer3.com/NavList
    Members may optionally receive posts by email.
    To cancel email delivery, send a message to NoMail[at]fer3.com
    ----------------------------------------------------------------

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

    Enter the email address associated with your NavList messages. Your NavList code will be emailed to you immediately.
    Email:

    Email Settings

    NavList ID 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