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: Is All-Haversine SR the be-all and end-all?
    From: John D. Howard
    Date: 2019 Apr 18, 11:58 -0700

    Tony,

    Just my 2 cents but I think you have a mis-guided sense of the math involved.  As Frank Reed has noted many  times, the navigators on sailing ships had the time sight for longitude and the noon sight for latitude down to a simple to follow recipy.  Probobly took less than 10 minutes to do.

    No advantage to a small book of Haversignes.  The ship would have onboard a large refrence book anyway.  Lat and Long for islands and ports, tables for distance off,  tide tables, etc were needed.  Look at a 19 th c. edition of Bowditch or Browns or any of the others ( sorry, don't know the names of other countries books ).  My copies have 30 or 40 tables to be used by the crew for many different things, not just cel nav.

    I agree with Greg that the best all-around table would be his Classic Agenton.  Simple, quick, and easy to use.  Great for a small boat or lifeboat nav kit but not much of an atvantage on a crewed ship that has a library of reference books.

    Again, I think the math took about 10 minutes, not hours.    IMHO

    John H.  41N  100W

       
    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