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    Re: Hamilton 992B as Marine Chronometer for 2018 GGR
    From: Greg Rudzinski
    Date: 2016 Dec 31, 12:22 -0800


    >Do you have any knowledge or experience of the Russian copies like MOLNIJA  which are on ebay for 30-40$ Also, a while back you discussed the US airplane 8 day clock as recommended by Letcher?

    >I would also take HO 208 and Fletcher ,+ Hewitt’s commonsense to get me out of left field problems. (is Doniol allowed? Recent but based on pre 1960s knowledge?)

    I have no experience with Russian chronometers :( The aircraft 8 day clocks are accurate (2-10 sec. per day) but are irregular on the daily rate so limited as a marine chronometer.  The railroad pocket watches look to be the way to go for retro navigating because they are designed to keep a constant daily rate and are readily available (enough on ebay to supply a fleet of 30 boats). For an around the world race it would be prudent to have two of everything critical. For skippers sellecting a 32 ft. sailing vessel the options are limited to small and light which means probably switching to Pub 208, Weem's Line of Position, and or Ageton short tables for sight reduction with 5 place trig log tables as the back-up. Pub 229 and anything published after 1969 would require a waiver from the race committee. The original Doniol as presented in 1955 using haversine and trig tables would be ok.

    Greg Rudzinski 

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