Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
    Re: Ogura IJN
    From: Greg Rudzinski
    Date: 2017 Aug 9, 18:06 -0700

    David,

    You Ask:

    "To change the subject slightly - given that the Hydrographic Office had an excellent (in my opinion) set of tables in Dreisonstok why did they put resources into a competing set of tables (Ageton)?"

    The Ageton method works off any assumed position including the DR position. The advantage of this is that intercepts are short so any slop or small error in azimuth will cause less of error on an EP or fix. I like very much the compact Haversine Doniol method and the Ageton Classic method which also work off the DR position. There are numerous posts in the archives on these alternate short methods and their advantages.

    Greg Rudzinski

    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