NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Silicon Sea: Leg 75
From: Dan Hogan
Date: 2001 Jun 29, 09:35 EDT
From: Dan Hogan
Date: 2001 Jun 29, 09:35 EDT
On 28 Jun 2001, at 12:46, Yves Arrouye wrote: > Wow. I missed 3 legs :( > > > Our last position FIX was (10d 30.0'N 78d 30.0'W) at > > 10:16:28UT @XXX.XXX We are bound for Cristobal, > > Panama(09d 23.0'N 79d 55.0'W). Our Estimated Time of > > Arrival(ETA) at Cristobal is 16:34:28ZT @XXX.XXX > > > > > > 1) What day of the week of our arrival? > > -- ------------------------------------ > > June 4, 2001 is a Monday. Yep. > > On VHF we call the Panama Canal Transit Authority on Channel > > 16 for instructions. We are required to fly the Panamainian > > Courtesy Flag from the Starboard spreader and the quarantine > > flag from the port spreader. > > > > 2) What color is the quarantine flag? > > -- ---------------------------------- > > Yellow. It is the "Q" flag. Yep. > > We anchor overnight, since the Panama Canal Authority > > requires 24 hours notice. We are anchored in an area known as > > the "Flats" until we can approach for inspection. > > > > After our approach approval and customs clearance on the next > > day we begin the process of making the preparations for > > transiting the Panama Canal. The mooring fee is $00.50 per > > foot to each greater foot per night. > > > > 3) What is the mooring fee for Silicon Sea per night? > > -- -------------------------------------------------- > > Silicon Sea is 48' 3'. The greater foot is 49'. That would be $24.50 per > night. Right. > > We are required to have 4 dock lines 125 feet long with a > > three foot eye on one end. And strong attach points. > > > > 4) Can we make these lines from a 500 foot roll of 3/4' line? > > -- ---------------------------------------------------------- > > No. 125 times 4 is 500, and we still need these eyes at the end. Add an > extra 16 feet (4 times 3, and some margin to actually make the splices) and > we'd be in business. Yep. > > The actual canal transit takes about 12 hours to complete. > > However, completing the Admeasure, getting Cruising Permits, > > clearing Customs and Immigration inspections can take 3 to 14 > > days for a small boat. It will take Silicon Sea until June 14 > > to complete the transit she is on the Pacific side of the > > Panama Canal. > > > > 5) In what direction does the Panama Canal run from the > > Atlantic Side to > > the Pacific side? > > > > South East (see > http://www.countrytours.com/travel/200102/International/PPC/PPCmap.asp; how do > people do w/o the Internet on their boat? ;-)) True. > > DR position(09d 24.6'N 79d 56.7'W) on 11/06/2001. > > > > No. 1 UT/GMT Body Hs > > > > 23:41:30 Arcturus 51d 58.7' > > 23:42:10 Procyon 29d 24.3' > > 23:43:05 Spica 57d 44.3' > > > > 6) What is the FIX position for SR No. 1? > > -- -------------------------------------- > > 09d 22.7'N 79d 55.7'W OK. > > These are the same sights as listed in Q6. But this time all > > numbers are to be ROUNDED to the nearest whole number. If you > > are using a calculator or Computer program round any numbers > > that are accessible, ie. Lat, Lon, Hs, GHA and Dec, to work > > the sight reduction and plot both FIXes. DO NOT ROUND TIME. > > > > UT/GMT Body Hs > > > > 23:41:30 Arcturus 51d 59.0' > > 23:42:10 Procyon 29d 24.0' > > 23:43:05 Spica 57d 44.0' > > > > > > 7) What is the FIX position for SR No. 2? > > -- -------------------------------------- > > 09d 23.3'N 79d 55.5'W OK. > > Now compare the two FIXes. > > 1.5 mile apart. I did them using a computer, so no problem with me, but I > assume that rounding to the nearest minute may make hand calculations easier > w/o a big loss of accuracy as far as en route sailing goes for a sailboat like > Silicon Sea. Yep. I go into this mode about 3 days after the start of a trip. By 3-4 days later I am at Sun sights only. A few days before ETA I start a few star sights. Dan Hogan dhhogan@XXX.XXX