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    Re: U-boat Celestial Navigation WWII
    From: Gary LaPook
    Date: 2016 Jan 7, 11:13 -0800

    Weclome aboard, you've come to the right place. Something else you might to look are the cylindercal slide rules used by the U-Boat navigators, the HR1 and the HR2 which were copies of the English Bygrave sliderule. Here are lilnks to a couple of previous posts about them:

    http://fer3.com/arc/m2.aspx/Manufacture-Bygraves-LaPook-aug-2009-g9378

    http://fer3.com/arc/m2.aspx/Manufacture-Bygraves-LaPook-aug-2009-g9428

    http://fer3.com/arc/m2.aspx/Manufacture-Bygraves-LaPook-aug-2009-g9429

    I developed a very easy to construct version of this device that does the same computation, instructions are available on my website at:

    https://sites.google.com/site/fredienoonan/other-flight-navigation-information/modern-bygrave-slide-rule

    We also discuss in flight celestial navigation on this site so if you seqrch the archive you might find some this of interest to you. 

    gl

       
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