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