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    Re: Sumner's Line (Navigation question)
    From: Fred Hebard
    Date: 2006 Feb 3, 00:56 -0500

    On Feb 3, 2006, at 12:43 AM, Chuck Taylor wrote:
    
    >
    >> "The
    >> DR position was found to be in error by 8 min too
    >> far south, giving a longitude of 31 min, 30 sec too
    >> far west.  The result to the ship might have been
    >> disasterous had this wrong position been adopted".
    >
    > was a bit of a dramatization added after the fact. He
    > was something like 9 miles farther west than he
    > thought, and he probably suspected as much.  In a
    > channel that is 30 miles wide and a wind blowing you
    > toward a lee shore, that's not a very comfortable
    > situation to be in.  I think he would have tried to
    > wait until he could get a fix before turning north.
    >
    > Best regards,
    >
    > Chuck Taylor
    
    I would expect that strong pressure such as you describe would be
    very helpful in spurring somebody to invent something like line-of-
    position navigation.  It does seem though that there was no imminent
    doom, just an impending delay in having to heave to or otherwise wait
    while avoiding that lee shore.
    
    
    

       
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