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    Re: Wharton & Field's Hydrographical Surveying
    From: Wolfgang Köberer
    Date: 2004 May 10, 14:27 +0200

    Contrary to what Fred H suggests radio time signals were not the final nail in the coffin of lunars. How could they: lunars were dropped from the US Nautical Almanac in 1912, whereas the US Navy station radio time signal did not come on the air until February 1913 – and how many ships were equipped to receive these signals?

    By that time Lunars had long been buried by the advent of cheaper chronometers and easier sight reduction methods – especially the St.Hilaire intercept method.

     

    Wolfgang Koeberer


    Von: Navigation Mailing List [mailto:NAVIGATION-L@LISTSERV.WEBKAHUNA.COM] Im Auftrag von Frank Reed
    Gesendet: Sonntag, 9. Mai 2004 20:35
    An: NAVIGATION-L@LISTSERV.WEBKAHUNA.COM
    Betreff: Re: Wharton & Field's Hydrographical Surveying

     

    Fred H wrote:
    "but before radio, made me realize that the radio probably was what done the lunar in."

    While lunars were effectively dead for half a century before radio was common at sea, the corpse was not yet buried. Most professional navigators were still required to learn lunars "just in case" they needed to re-set their chronometers. Radio was the final nail in the coffin. A radio time signal could be heard almost anywhere around the world and enabled quick and easy chronometer checks at any time. That's usually cited as the immediate reason that tabulated lunars were at long last dropped from the almanacs by 1912.

    Frank R
    [X] Mystic, Connecticut
    [ ] Chicago, Illinois

       
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