Racing a sailboat against other sail boats of similar speed potential is an art as much as a science but good science used the right way can help. Still like DC said “No Excuse to Lose”
On Thu, Dec 19, 2019 at 4:34 PM Francois Rivard via CnC-List < cnc-list@cnc-list.com> wrote: > Hi John, > > I would definitely consider it / most likely get it. I use a combination > of Sail Racer app on my phone and the layline function / Tack "A" vs tack > "B" on my (still killer) B&G Zeus2 Touch charplotter. Sail Racer is really > cool to have for starting line tactics and the B&G does give you nice > insights on one tack vs the other and how quick you're getting to the mark. > > Like anything else in racing any vehicle, short of outright cheating there > are no silver bullets. The VMG on mark and VMG on wind / time to mark are > just more data points that you include in the (complex) overall picture / > pick your best course. I'm a bit of a data nerd (I do the stuff for a > living) but to me, having the extra data - info is really cool and useful. > > As David mentioned, there are limitations. The wind shifts and current / > tide effect should be issues if the system is sophisticated enough to > understand drift which the B&G and most charplotters / racing computers > do. It's also very sophisticated in optimizing the course as it precisely > knows your heading / your over the water and SOG speed / the true / > apparent wind speed and wind direction. All that is gathered via GPS, the > paddle wheel, and wind vane on the mast which are all networked together > and very precise. On the other hand sometimes my recommended layline is > 300 yards in the woods :-) It knows where I am but the layline function > doesn't seem to know the terrain. So you have to take it with a grain of > salt. > > I'll never forget on one race I was about 10 boat lengths behind my group > / everybody was doing a long tack to get to the windward mark. I checked > the plotter and it recommended doing a couple short tacks. I followed the > advice / ended-up 10 boat lengths ahead of everyone on the other side of > the marker / won the race by a good margin.. > > Your actual mileage may vary. As for me, I'm getting a wifi bridge for > my NMEA 2000 network so I can get even more cool metrics via the phone / > tablet app networked to all of the above over the wifi :-) > > Merry Christmas and Happy New Year! > > -Francois Rivard > 1990 34+ "Take Five" > Lake Lanier > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > -- Sent from Gmail Mobile
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