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    Re: H.O. 229/249: publication dates
    From: Lu Abel
    Date: 2011 Mar 24, 12:38 -0700
    I remember that the preface to my copy of 229 said that the tables were calculated using an IBM 1401 computer.   (Sorry, I can't lay my hands on my book, it's probably buried in some unopened box of books from my last move).  

    The preface said that these were the first set of computer-generated sight reduction tables (at least in the modern sense of "computer," the pre-WW II usage of "computer" was someone (typically female) who computed something using a mechanical calculator, so I guess those older sight reduction tables were "computer"-generated, too).

    The 1401 was introduced in late 1959.   

    My guess would therefore be that 229 appeared in the mid-60s.


    From: Greg R. <gregr_ingest@yahoo.com>
    To: NavList <NavList@fer3.com>
    Sent: Thu, March 24, 2011 9:56:47 AM
    Subject: [NavList] Re: H.O. 229/249: publication dates

    According to the Mystic Seaport website (Milestones in the History of

    "1981 Sight Reduction Tables for Marine Navigation is published, H.O. 229,
    as six volumes calculated and typeset by computer"

    ...though I could have sworn that 229 pre-dated 249 (?).



    On 3/24/2011 8:33:45 AM, Frank Reed (frankreed@historicalatlas.com) wrote:

    > When were these first published? Thanks.
    > -FER
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