Go no go formula

http://fortworthboatclub.com/wp-content/uploads/2011/11/GoNoGoFormula1.pdf Ok, this is inland lake sailing, but the formula offers guidance to the race committee including factors like wind speed, water temperature. Geo. Barlow Cal 28 no 155 Knackered

It is a good start, George. As a "scientist", I test the edges. The formula says that on a 70 degree sunny day with the water temp at 70 degrees, a race would have to be started in 30+ knots of air. This could be debatable if not verboten depending on type of race and general skill level of participants. I do not know what the waves on the lake are like when the blow is 30+. Take Care Charlie From: Ca… [at] yahoogroups.com [mailto:Ca… [at] yahoogroups.com] On Behalf Of George Barlow Sent: Thursday, June 14, 2012 7:28 PM To: Ca… [at] yahoogroups.com Subject: [External] [Cal_Boats] Go no go formula http://fortworthboatclub.com/wp-content/uploads/2011/11/GoNoGoFormula1.pdf Ok, this is inland lake sailing, but the formula offers guidance to the race committee including factors like wind speed, water temperature. Geo. Barlow Cal 28 no 155 Knackered ------------------------------------ Yahoo! Groups Links

Do you know if the wind speed is sustained or gusts. For example, what would the points be for what it is right now at SFO, 21 G 35 mph? 38 or 62? Allen On Thu, Jun 14, 2012 at 4:27 PM, George Barlow <ge… [at] yahoo.com> wrote: > ** > > > http://fortworthboatclub.com/wp-content/uploads/2011/11/GoNoGoFormula1.pdf > > Ok, this is inland lake sailing, but the formula offers guidance to the > race committee including factors like wind speed, water temperature. > > Geo. Barlow > Cal 28 no 155 > Knackered > >

Precisely the problem, Allen. What you would consider moderate in the SF Bay would be hideous in some other places. The chop generated at 25-30K in the Chesapeake would knock out most peoples' teeth (or dentures). The waves in SF Bay roll more (or so I've been told). You'll need to come up with what is reasonable in the SF Bay, but the basic formula is a good one. I would add one parameter for the level of racing (which presumes something about the average skill level of the sailors). Something like Club Race (non-spin), Club Race, Regional Event... and so forth. In SF, you have direct ocean exposure. Probably steadier winds when you have them. We in the East have a whole continent and some mini-mountains nearby to mess with our fronts and resulting weather. We could have steady 15 with gusts to 18 one time, and steady 15 with gusts to 25 (and shifty) the next. Cheers Charlie From: Ca… [at] yahoogroups.com [mailto:Ca… [at] yahoogroups.com] On Behalf Of Allen Edwards Sent: Thursday, June 14, 2012 9:30 PM To: Ca… [at] yahoogroups.com Subject: [External] Re: [Cal_Boats] Go no go formula Do you know if the wind speed is sustained or gusts. For example, what would the points be for what it is right now at SFO, 21 G 35 mph? 38 or 62? Allen On Thu, Jun 14, 2012 at 4:27 PM, George Barlow <ge… [at] yahoo.com<mailto:ge… [at] yahoo.com>> wrote: http://fortworthboatclub.com/wp-content/uploads/2011/11/GoNoGoFormula1.pdf Ok, this is inland lake sailing, but the formula offers guidance to the race committee including factors like wind speed, water temperature. Geo. Barlow Cal 28 no 155 Knackered

Well, Tuesday we had almost no wind at the start and almost 40 trying to get back into the harbor. I had a simple rule for daysailing. Don't go out if there is a 30 in the marine forecast or the word thunder. Thanks to everyone for the comments. It was a difficult task for the RC. When they left the dock you could look out over our race area and it was calm. They set up the line and were in almost no wind. They probably had no idea that it was blowing 35 where they were sending us. The marine forecast said something like 5-10 for the day but gusts of 40+ for that evening and there were gusts of 33 2 hours before the race at the south end. Allen On Thu, Jun 14, 2012 at 6:49 PM, Husar, Charlie [USA] (ASE) < hu… [at] bah.com> wrote: > ** > > > Precisely the problem, Allen. What you would consider moderate in the > SF Bay would be hideous in some other places. The chop generated at 25-30K > in the Chesapeake would knock out most peoples’ teeth (or dentures). The > waves in SF Bay roll more (or so I’ve been told). You’ll need to come up > with what is reasonable in the SF Bay, but the basic formula is a good > one. I would add one parameter for the level of racing (which presumes > something about the average skill level of the sailors). Something like > Club Race (non-spin), Club Race, Regional Event… and so forth.**** > > ** ** > > In SF, you have direct ocean exposure. Probably steadier winds when you > have them. We in the East have a whole continent and some mini-mountains > nearby to mess with our fronts and resulting weather. We could have steady > 15 with gusts to 18 one time, and steady 15 with gusts to 25 (and shifty) > the next.**** > > ** ** > > Cheers**** > > Charlie**** > > ** ** > > *From:* Ca… [at] yahoogroups.com [mailto:Ca… [at] yahoogroups.com] *On > Behalf Of *Allen Edwards > *Sent:* Thursday, June 14, 2012 9:30 PM > *To:* Ca… [at] yahoogroups.com > *Subject:* [External] Re: [Cal_Boats] Go no go formula**** > > ** ** > > > > Do you know if the wind speed is sustained or gusts. For example, what > would the points be for what it is right now at SFO, 21 G 35 mph? 38 or 62? > **** > > ** ** > > Allen**** > > ** ** > > ** ** > > ** ** > > On Thu, Jun 14, 2012 at 4:27 PM, George Barlow <ge… [at] yahoo.com> > wrote:**** > > **** > > http://fortworthboatclub.com/wp-content/uploads/2011/11/GoNoGoFormula1.pdf > > Ok, this is inland lake sailing, but the formula offers guidance to the > race committee including factors like wind speed, water temperature. > > Geo. Barlow > Cal 28 no 155 > Knackered**** > > ** ** > > > > > **** > > **** > > >

http://www.fortworthboatclub.com/wp-content/uploads/2013/07/Go-NoGo.pdf This is to update the link to the "to race or not to race" formula. Once again, it fits us perfectly since it drives the race committee decision making towards safety when conditions aggregate in the extreme. In N. Texas, the limit is lightning. Any appearance of lightning forces the formula to a "no-go". ---In Ca… [at] yahoogroups.com, <geobarlow@...> wrote: http://fortworthboatclub.com/wp-content/uploads/2011/11/GoNoGoFormula1.pdf http://fortworthboatclub.com/wp-content/uploads/2011/11/GoNoGoFormula1.pdf Ok, this is inland lake sailing, but the formula offers guidance to the race committee including factors like wind speed, water temperature. Geo. Barlow Cal 28 no 155 Knackered

Very cool. I just sent it to my RC chair. I like it. The problem we have is how to determine wind speed. We did a race where the starting line was fairly calm at the start but over 50 knots by the time we finished. The weather report was 40 knots. Do you use the weather report or the actual wind readings before the race? Allen On Tue, Nov 26, 2013 at 11:02 AM, <ge… [at] yahoo.com> wrote: > > > http://www.fortworthboatclub.com/wp-content/uploads/2013/07/Go-NoGo.pdf > > > This is to update the link to the "to race or not to race" formula. Once > again, it fits us perfectly since it drives the race committee decision > making towards safety when conditions aggregate in the extreme. > > > In N. Texas, the limit is lightning. Any appearance of lightning forces > the formula to a "no-go". > > > ---In Ca… [at] yahoogroups.com, <geobarlow@...> wrote: > > http://fortworthboatclub.com/wp-content/uploads/2011/11/GoNoGoFormula1.pdf > > Ok, this is inland lake sailing, but the formula offers guidance to the > race committee including factors like wind speed, water temperature. > > > Geo. Barlow > Cal 28 no 155 > Knackered > > >

Allen - So do you quit after the race has started if you exceed 60 points? Just curious - Paul From: Allen Edwards <al… [at] gmail.com> To: Cal_Boats <Ca… [at] yahoogroups.com> Sent: Tue, Nov 26, 2013 3:23 pm Subject: Re: [Cal_Boats] RE: Go no go formula Very cool. I just sent it to my RC chair. I like it. The problem we have is how to determine wind speed. We did a race where the starting line was fairly calm at the start but over 50 knots by the time we finished. The weather report was 40 knots. Do you use the weather report or the actual wind readings before the race? Allen On Tue, Nov 26, 2013 at 11:02 AM, <ge… [at] yahoo.com> wrote: http://www.fortworthboatclub.com/wp-content/uploads/2013/07/Go-NoGo.pdf This is to update the link to the "to race or not to race" formula. Once again, it fits us perfectly since it drives the race committee decision making towards safety when conditions aggregate in the extreme. In N. Texas, the limit is lightning. Any appearance of lightning forces the formula to a "no-go". ---In Ca… [at] yahoogroups.com, <geobarlow@...> wrote: http://fortworthboatclub.com/wp-content/uploads/2011/11/GoNoGoFormula1.pdf Ok, this is inland lake sailing, but the formula offers guidance to the race committee including factors like wind speed, water temperature. Geo. Barlow Cal 28 no 155 Knackered

We don't use that scale and have never called a race. It is up to the individual skippers to decide when it is safe to race. On the race a little over a year ago when the wind caught everyone off guard, all but 3 boats pulled out. I was one of them and ended up winning the race but doing significant damage to the boat. Others were not as lucky as one had a crew member lose a finger. Several other boats were damaged or had torn sails. I would like to see some criteria that calls off races similar to what I used when deciding to go sailing. My personal criteria was if one of two words was in the weather report, I would not go out. The two words are Gail and Thunderstorms. Allen On Tue, Nov 26, 2013 at 12:37 PM, <pw… [at] aol.com> wrote: > > > Allen - > > So do you quit after the race has started if you exceed 60 points? > > Just curious - > > Paul > -----Original Message----- > From: Allen Edwards <al… [at] gmail.com> > To: Cal_Boats <Ca… [at] yahoogroups.com> > Sent: Tue, Nov 26, 2013 3:23 pm > Subject: Re: [Cal_Boats] RE: Go no go formula > > > Very cool. I just sent it to my RC chair. I like it. > > The problem we have is how to determine wind speed. We did a race where > the starting line was fairly calm at the start but over 50 knots by the > time we finished. The weather report was 40 knots. Do you use the weather > report or the actual wind readings before the race? > > Allen > > > On Tue, Nov 26, 2013 at 11:02 AM, <ge… [at] yahoo.com> wrote: > >> >> http://www.fortworthboatclub.com/wp-content/uploads/2013/07/Go-NoGo.pdf >> >> >> This is to update the link to the "to race or not to race" formula. >> Once again, it fits us perfectly since it drives the race committee decision >> making towards safety when conditions aggregate in the extreme. >> >> In N. Texas, the limit is lightning. Any appearance of lightning >> forces the formula to a "no-go". >> >> >> ---In Ca… [at] yahoogroups.com, <geobarlow@...> wrote: >> >> http://fortworthboatclub.com/wp-content/uploads/2011/11/GoNoGoFormula1.pdf >> >> Ok, this is inland lake sailing, but the formula offers guidance to the >> race committee including factors like wind speed, water temperature. >> >> >> Geo. Barlow >> Cal 28 no 155 >> Knackered >> > > >