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    Re: Log keeping
    From: Greg Rudzinski
    Date: 2009 Jul 28, 11:52 -0700

    Peter,
    
    See chapter 23 of Bowditch No. 9 1977 edition THE PRACTICE OF MARINE
    NAVIGATION. Your questions are addressed there. The end of piloting
    and the beginning of the next phase of navigation is called Taking
    Departure and if open ocean is to be traversed then the vessels
    position is transfered to a plotting sheet. In the reverse it is good
    practice to have the point of transfer back to the chart well labeled
    with the go to chart number on the course track of the plotting sheet.
    Once back on the chart then the all important Landfall can be taken.
    
    Greg
    
    On Jul 28, 11:20�am, P H  wrote:
    > Suppose you are sailing across an ocean and you have been keeping track of 
    your position using only dead reckoning and celestial, like in the old days. 
    �Then you see land which contains your intended destination. �At some point 
    you switch from celestial to visual in order reach your port. �At that moment 
    you can accurately determine how far off your last celestial fix was. �My 
    question is how were such "discontinuities of fix" marked in logbooks and on 
    charts? �Were there any established procedures as to when you may stop 
    carefully plotting your position and just dock at the pier by "Mark 1 
    eyeball"? �I suppose a similar question can be posed for when you leave port; 
    at which point do you begin the usual navigation routines, celestial or 
    otherwise?
    >
    > Peter Hakel
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