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: [9686] compass points
    From: George Huxtable
    Date: 2009 Sep 10, 11:42 +0100

    kotleopold60-AT-yahoo.com sent this interesting question from the archive-
    
    Can you please explain me the mystery (if any ;>) regarding some discrepancy
    in naming compass points . I found by accident of course that in Mixter ,
    "Primer of Navigation," page XX (in the end of the book) Ed.1940, Table F
    provides compass points and degrees ("the quarter points are named according
    to Merchant Marine Practice") some point names are different from that in
    other books (Bowditch, Reed, you name it).
    
    Specifically,
    
    NNE
    NExN3/4N
    NExN1/2N
    NExN1/4N
    NExN
    
    In Bowditch , Henderson, etc.
    
    NNE
    NNE1/4E
    NNE1/2E
    NNE3/4E
    NEbE
    
    Values of course the same but why are they counted from different
    intercardinal points? I thought the this kind of basic info should be pretty
    standard.
    
    =======================
    
    From George-
    
    I was already aware of two incompatible "systems", as described in Norie's
    Epitome of 1900 (and later), and in Raper's Practice of Navigation of 1856,
    that were quite different. This interesting question has led me to  two
    further systems, that appear to be different again, in Mixter and in
    Bowditch. No doubt others exist! These are just English-language texts, to
    be found on my shelves, and it seems likely that yet further "systems" may
    exist, especially in other languages. I attach scans.
    
    Some of these systems have a certain logical consistency. Others are
    completely unsystematic. One would indeed expect such notation to have been
    standardised early on, especially as it comes up in vital instructions to
    the helmsman. But no ...
    
    The unfortunate midshipman, when taking examinations, was expected to "box
    the compass", that is, to recite all the bearings in order, both clockwise
    and anticlockwise. If he had been trained in a different school from his
    examiner, that could be unfortunate.
    
    The moral is that we shouldn't expect to find much logic in the way things
    were done at sea.
    
    George.
    
    contact George Huxtable, at  george@hux.me.uk
    or at +44 1865 820222 (from UK, 01865 820222)
    or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
    
    --~--~---------~--~----~------------~-------~--~----~
    NavList message boards: www.fer3.com/arc
    Or post by email to: NavList@fer3.com
    To unsubscribe, email NavList-unsubscribe@fer3.com
    -~----------~----~----~----~------~----~------~--~---
    
    
    

    File:


    File:


    File:


    File:


       
    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