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    Re: Method used to compute navigational tables.
    From: Jeremy C
    Date: 2010 Feb 1, 17:47 EST
    They were quite proud in the 1970's that HO 229 was calculated by computer.  I think they mention it in the introduction.  I was also taught that HO 214 was the result of WPA work and done by hand.
    One oddity of my volumes of HO 214 is that the spine is printed upside down or backwards depending on how you look at it, compared to most books in my library.
    In a message dated 1/30/2010 5:48:56 P.M. Eastern Standard Time, glapook@pacbell.net writes:

    I just noticed in a volume of H.O. 214 printed in 1940 a statement that
    the computations were done with seven place logarithms. This shows that
    the early volumes were computed by hand. This was done as part of the
    WPA program to put out of work mathematicians to work during the
    depression. I wonder when these tables started to be calculated with
    computers? Think of the amount of work doing all these calculations,
    (720 entries per page, 259 pages per volumes, 186,400 entries per
    volume) by hand.


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