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    Re: Silicon Sea Leg 67 results
    From: Dan Hogan
    Date: 2000 Jul 23, 19:08 EDT

    On 23 Jul 2000, at 0:35, Paul Hirose wrote:
    > Answers to Silicon Sea Leg 67.
    >
    > 1. At evening fix, 1830 ZT = 2030 UT.
    OK
    >
    > 2. GHA Moon at 1830 ZT = 7 59.9 . The question asked for "GHA Aries of the
    > Moon," but I assumed GHA of the Moon was wanted.
    Your right on the GHA. The request for GHA Aries was a "gimmic" question.
    >
    > 3. 1830 ZT fix = 3 00 N 31 00 W for practical purposes. We appear to
    > be dead on course but distance made good is much more than expected.
    OK
    > 4. Compass course 308 to Barbados
    .
    OK
    > 5. True course 290.
    OK
    > 6. After sailing 614 more mi, DR = 6 30 N 40 40 W.
    OK
    > 7. ZT upon reaching this position = May 17 0400.
    ??? Check the date and time and the time and date of the last FIX.
    >
    > All work done by hand with almanac, HO 229, plotting sheets. Time
    > speed distance problems solved with E-6B slide rule.
    Sailed this way for several years, But used several "Short Tables". I
    liked H.O. 208 the best.
    > My plotting sheets are on 8.5 x 11 inch typing paper, so the scale has to
    > be small to plot the course to Barbados. 1 mm = 12 mi!. Still, I'll bet the
    > plot is far more accurate than you could sail a small vessel.
    Being non-metric trained, I use standard school notebooks (spiral
    Binding). Six lines  to the degree or 12 lines for more accuracy.
    > For the celestial fix I expanded the scale to 1 mm = 1 mi.
    >
    Dan Hogan
    dhhogan{at}XXX.XXX
    

       
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