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    Re: Silicon Sea: Leg 21
    From: Dan Hogan
    Date: 1997 Feb 20, 12:28 EST

    Sorry for the bandwidth, but I thought this would be a good time to restate
    some Silicon Sea usage to any newcomers.
    John's answers all correct. When the problem answers are posted you will
    see slight differences between the answers. This comes from the use of
    different methods used. As long as your answer is within the circle of
    error the answer is correct. The error is your visible horizon. On Silicon
    Sea that works out to 3.3 mi using United States data - Dist to Horizon =
    1.17 x SQRT HE(height of eye). If your system uses another standard don't
    worry about it, use it. The answer is still correct. That's the way
    practical navigation at sea works. In fact when I cruise I round all Lat &
    Lon to the nearest whole degree.
    Because of minimal information on the Mediterranean I am ignoring cruising
    details, including the Oil Platforms we will be passing shortly. Because I
    don't want my Grandson to inherit this project I will be making big jumps
    in passages after the next couple of problems. The Suez Canal transit will
    be a worlds record.
      Cheers,
    -- Dan --
    At 23:03 2/20/97 +1000, John Simmonds Wrote
    >Hi Shipmates,
    >
    >my answers to leg 21
    >
    >Q1	a)	106d T
    >	b)	231.2 nm
    >	c)	24hrs 20min
    >
    >Q2	100.7d C
    >
    >Q3	a)	1937 hrs
    >	b)	Yes
    >
    >Q4	DR 32d 10.7' N   028d 49.1' E
    >
    >Q5	FP at 1740 GMT  32d 09.9' N  028d 50.1' E
    >
    >Q6	CC from Ep  105d   SMG  9.7 kts
    >
    >Q7	a)	TCMG   109d
    >	b)	advance 72.8 nm
    >
    >Q8	Not having a chart of the area, I am assuming no navigation
    >hazards in the vicinity. I would not alter course at this time as we
    >are sailing close to my desired track.
    >
    >Cheers, and welcome back Dan
    >
    >John
    >=====================================
    >He who has never been lost is no navigator
    >=====================================
    >
    >
    >
    Dan Hogan
        West Covina, CA
        dhhogan{at}XXX.XXX
    

       
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