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: Haversines with Logarithms
    From: Murray Buckman
    Date: 2020 Oct 12, 17:28 -0700

    I too am finding the history fascinating.  When I was studying for the New Zealand version of the RYA Yachtmaster Ocean around 1981 or '82 the focus was on AP3270 (H.O. Pub. No.249) and the use of a non-programmable calculator (the original Casio fx-82).  But in the notes we were given a write-up on sight reduction using haversines.  It was not examined and I never bothered with it.  The calculator became the main tool and the Air Tables were backup. A few weeks ago I worked a simple sun sight using haversines just for the fun of it.  In the pre-air table days and before pocket calculators with basic scientific functions I can see the appeal of the method.  I appreciate the color provided by the experts here.

       
    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