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    Another Jack Aubrey navigation question
    From: Geoffrey Kolbe
    Date: 2011 Jul 21, 20:05 +0100

    In chapter 3 of  Patrick O'Brian's "Desolation Island", Captain Jack
    Aubrey's ship the "Leopard" is being tossed about in a violent storm
    in the Bay of Biscay. Captain Aubrey is anxious that he is being
    blown onto the "ironbound coast of Spain", but finally the clouds
    part fleetingly and he is able to get a sighting of Antares with his
    sextant. Captain Aubrey is relieved that he still has plenty of sea room.
    Now, for us "modern" navigators for whom the position line is meat
    and drink, such an observation makes complete sense. But would a
    navigator in the first decade of the 19th century have been able to
    draw such a conclusion based on a single sighting of a single star?
    Geoffrey Kolbe

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