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...
    François Coudraye, anyone?
    From: Roger W. Sinnott
    Date: 2018 Jul 30, 12:50 -0400

    A friend of mine, Rebecca Karo, is an art historian and also works as an archivist in Exeter, NH.  She wrote me with this question:

     

    "The American Independence Museum in Exeter, NH, has a

    letter from the Marquis de Condorcet to a royal minister

    (I have to find out who) about acquiring 600 copies of

    François Coudraye, 'Dissertation sur la manière de

    déterminer les longitudes à la mer, couronnée par la

    société des arts et métiers d'Utrecht,' 1783. He asked

    the minister to also confer with Charles de Borda,

    another interesting mariner/mathematician, about acquiring

    the book. Condorcet wrote that the book was clear and

    methodical and would be good for mariners who are unused

    to calculating their position while at sea. The book is

    small -- an octavo of 94 pages -- so it would be easy to

    take on board!"

     

    Charles de Borda's lunar-distance clearing method is described in the books of Cotter, and he is mentioned in connection with testing chronometers at sea in The Quest for Longitude (William J. H. Andrewes, ed.) and in The Marine Chronometer by Rupert T. Gould.

     

    But I can find very little about François Coudraye, although a page in the French Wikipedia confirms that he wrote the 1783 dissertation on longitude at sea: https://fr.wikipedia.org/wiki/Fran%C3%A7ois-C%C3%A9lestin_de_Loynes_de_La_Coudraye

     

    Does anyone here know anything more about François Coudraye (1743-1815) or his 94-page book?

     

    Roger

     

    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