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
    Name or NavList Code:
    Email:
       
    Reply
    Re: History & development of HO-249
    From: David C
    Date: 2020 Feb 3, 19:10 -0800

    The following is probably an over simplification but without having copies of each edition it is difficult to be precise.

    249 was conceived by Commander CH Hutchings USN in 1942. The preliminary edition of volume 1 was published in 1947.

    The RAF, RCAF and USAF agreed on a specification for these tables in 1950.

    In the UK  AP1618 was replaced by AP 3270. The latter was a facsimile of HO249.

    I have attached a copy of the foreward to AP3270 and the relevant page from Bowditch 1958.

    As for payment who knows?  Britain was bankrupt after the war and the US was intent on destroying the Empire. I suspect that from the early 1940s onwards there was a flow of British IP to the US.  RV Jones in his book  "Most Secret War" describes how a  magnetron, which was essential for radar, was sent to the US. A US company (I cannot remember which one) then developed and mass produced the device,

    File:


    File:


       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

    Enter the email address associated with your NavList messages. Your NavList code will be emailed to you immediately.
    Email:

    Email Settings

    NavList ID 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