Gotcha I was subtracting the adjustments instead of multiplying. Sent from my iPhone
> On Jul 18, 2018, at 11:35 AM, Galway, Shannon <[email protected]> wrote: > > I think Roger’s calculations are correct John, 69.1 x 0.995 x 0.995 x 0.995 x > 0.974 = 66.299 > > Thanks, > > Shannon Galway, P.E. > VP of Technical Services > > Friede & Goldman, Ltd. > 3151 Briarpark Dr., Suite 800 > Houston, Texas 77042 > 713-952-3444 > [email protected] > > Confidentiality Notice: This electronic message transmission (and/or the > documents accompanying it) may contain confidential or privileged information > belonging to the sender, which is protected under trade secret, unfair > competition, and copyright laws. If you are not the intended recipient, be > aware that any disclosure, copying, distribution or use of the contents is > strictly prohibited. If you have received this electronic transmission in > error, please notify the sender by telephone at (713) 952-3444 immediately. > > > From: [email protected] [mailto:[email protected]] On > Behalf Of John Tomko > Sent: Wednesday, July 18, 2018 11:29 AM > To: [email protected] > Cc: austincats <[email protected]> > Subject: [austincats-gg] Re: [TCDYC] Re: Wayward Winds Results Inquiries / > DP-N > > Roger, > > Good job on taking the time to figure all this out. > > FYI... I am know handicap expert. I have never used the program or done > scoring. I may be wrong in understanding how you apply the adjustments. Here > is my question. How do you come up with 66.29 from DP-N 69.1 - JU .995 - MN > .995 - BM .995 - L3 .974 = DP-N 66.29? I come up with DP-N 69.1-MN .995-BM > .995-L3 .974=DP-N 66.136 and when you add in the jib hit I get DP-N 69.1-JU > .995-MN .995-BM -.995-L3 .974=65.141. Is this correct? > > > John > > From: "Jim Casto" <[email protected]> > To: [email protected] > Sent: Wednesday, July 18, 2018 10:53:35 AM > Subject: Re: [TCDYC] Re: Wayward Winds Results Inquiries / DP-N > > I applaud this fully transparent communication. > We use Portsmouth ratings so we can race our (sometimes very) different > boats. The Portsmouth ratings are indeed unlikely to be accurate after 2 > modifications, and I do not support using 3 or 4 mods. > Perhaps SCHRS system can provide more accurate ratings, ... someday. > > That being said, Scott is an excellent sailor, and every time I have competed > against him, he made fewer mistakes than I did, had a well-prepared boat that > didn't break down, and sailed his boat to its fullest potential. I suspect > he comes out on top of the ratings in most scenarios, and I will continue to > try to get to the line first, on whatever boat I bring. > > Jim Casto > > > From: Roger Howard <[email protected]> > To: Texas City Dike Yacht Club <[email protected]> > Sent: Tuesday, July 17, 2018 7:22 PM > Subject: [TCDYC] Re: Wayward Winds Results Inquiries / DP-N > > > The screenshot is attached now vs. the sailwave file. > > On Tuesday, July 17, 2018 at 7:20:03 PM UTC-5, Roger Howard wrote: > Hello, > Due to the number of inquiries as to scoring on Wayward Winds, I am going to > respond via public post and send this across email as well.. The issue that I > have received so many inquiries on.. is, Scott Tuma's rating on the P18-2. So > let me address this now. His rating was derived from the table of DP-N > modifications in the US sailing Portsmouth handbook along with the table of > pre-calculated classes.. Keep in mind that once more than two modifiers are > combined, the ratings become unstable. You can find that statement on page 19 > of the handbook. (top of the page) > > > I had a long conversation with Nathan Titcomb Offshore Director for US > Sailing. For those of you who do not know, the offshore department is where > ratings are produced for sailboat races. I explained to him the situation and > what I knew to be fact about the modifications to Frankenkitty. In his > opinion, I applied the rating for Scott appropriately if not punitively. > > > At Nathan Titcomb's recommendation, I am putting together a group of > Certified Race Officials to fully measure Scott's boat. Not only is Scott > willing to let us measure the boat, he welcomes it. He also stands by his > offer to switch boats with anyone. I also plan on getting the folks over at > SCHRS involved as well. > > > So now back to the scoring on Wayward Winds. So in preparation for this > message. I re-scored the race and posted it to the sailwave results folder. I > am also adding a screenshot because the sailwave site has been kinda fluky > lately. This time I also added a larger jib modification as well. So here is > how this works. DP-N 69.1 - JU .995 - MN .995 - BM .995 - L3 .974 = DP-N > 66.29. This is one more modifier than what I told Nathan Titcomb about. > . > > > THE FINAL STANDINGS REMAIN THE SAME EVEN WITH THE ADDITIONAL MODIFIER AND > REDUCED DP-N. PERIOD > > > Roger Howard > US Sailing Certified Race Official > PRO Wayward Winds > > -- > You received this message because you are subscribed to the Google Groups > "Texas City Dike Yacht Club" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/tcdyc. > For more options, visit https://groups.google.com/d/optout. > > > > > -- > You received this message because you are subscribed to the Google Groups > "Texas City Dike Yacht Club" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/tcdyc. > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "AustinCats" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- > You received this message because you are subscribed to the Google Groups > "AustinCats" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Texas City Dike Yacht Club" group. 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