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    Re: some navigation info. from a trip aboard the RMS St. Helena
    From: Roger M. Derby
    Date: 1999 Oct 04, 11:02 EDT

    It would work if he used local times for a twenty five hour day.
    Roger
    Russell Sher wrote:
    > <snip>
    > Each day, various points of interest from the bridge would be read over the
    > vessel's public address system. e.g. the position, average speed and charted
    > depth, etc. These would always be given for 1200 LMT.
    >
    > On one particular day the vessel's distance run (between 1200 previous day
    > and 1200 for the day in question), was given as 377.5 nautical miles and the
    > officer of the watch went on to say that this implied an average speed of
    > 15.1 knots. Some quick calculating had me confused, since this did not seem
    > to work out - after a while I figured it out - who of you on our list can
    > give me the reason for the apparent discrepancy?
    >
    

       
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