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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.

    Lu


    From: Greg R. <gregr_ingest---.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
    Navigation):

    "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 (?).

    http://www.mysticseaport.org/index.cfm?fuseaction=home.viewpage&page_id=E37B012C-B0D0-D05E-1A1C5EF9D0FEE2AE

    --
    GregR


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

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