NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Leg 55 results
From: Dan Hogan
Date: 1999 Jul 04, 19:01 EDT
From: Dan Hogan
Date: 1999 Jul 04, 19:01 EDT
Paul: >This is a little late, but here are my Silicon Sea Leg 55 results. >The first four answers I have previously posted. > >1. DR Mar 16 2101Z = 47 20 S 122 52 W. Local time 8 h behind >Greenwich. Lon off a bit. >2. TC to 52 30 S 100 00 W = 109, distance = 932 nm. Diff probably due to Lon above >3. Compass course = 82. Same as 2, above >4. DR Mar 17 0250 Z = 47 42 S 121 20 W. Same diff in Lon >(the following answers I have not posted before) > >5. Fix at 0250 Z = 47 03 S 118 28 W. DR was way off. Diff on Lat off slighly. Lon off, but diff is less. >My initial reduction with the Nautical Almanac tables put the LOPs all >over the ocean. I recomputed the sights with HO 211 and got better >results. Intercepts were very long due to the bad assumed position. So >the fix was sloppier than I like, but I was too lazy to re-work the sights >from a better AP. > >6. DR after 81 hours = 52 40 S 99 44 W. You are off slightly, but if you were navigating using 211 and plotting on a plotting sheet it would be a NORMAL difference in FIX position between any two navigators. >7. Time after 81 hours = Mar 20 1150 Z, 0450 ZT OK Dan Hogan WA6PBY dhhogan@XXX.XXX Navigation-L: http://nav.cnchost.com
