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    Re: Silicon Sea: Leg85 ANSWERS
    From: Dan Hogan
    Date: 2002 Oct 23, 06:02 -0700

    On 23 Oct 2002, at 13:43, Peter Fogg wrote:
    
    > Q1) Total distance 3222 nm
    OK
    >
    > Q2) 13.4 days
    OK
    >
    > Q3) Need 100+ gal, carry 220 gal, so YES
    OK
    >
    > Q4) TC 12.3d
    OK
    >
    > Q5) Also time of sun's meridian passage, 12 noon LAT
    OK
    
    >
    > Q6) Still 12.3d ( calculated 12.25d)
    OK
    >
    > Q7) TC to steer 011.8d, less combined error 11.5 leaves
    >        CC to steer 000.3d
    OK
    >
    > However as accuracy by plotting is only to nearest degree
    > a CC to steer 000d is more practical. I guess that there must
    > be a way to calculate these questions by trigometric means.
    
    Which is why after about the thrid day out, I usually end up navigating to
    the nearest whole minute, then a week after that, only noon sights until
    about one or two days from ETA.
    
    
    
    Dan Hogan WA6PBY
    C27 "Gacha"
    dhhogan1---.net
    Nav-L Page: http://www.wa6pby.com
    
    
    

       
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