PHRF Lake Ontario has supplied both FS and NFS ratings ( if appropriate ) for years. They use to track both FS and NFS races and analyze the results.
For 2012 season this was changed to keeping a FS SP based on race results and using a calculated offset for NFS. http://phrf-lo.org/index.php?option=com_content&view=article&id=508:nfs-delta&catid=93:us-sailing-offshore-office&Itemid=214 As other have mentioned the delta is around 16 - 18 sec/mile for some fractional rigged boats, in the 22 - 24 sec/mile for many full hoist rigged boats, and 40+ for "sport" boats that might plane or surf extensively. Michael Brown Windburn C&C 30-1 Date: Tue, 23 Feb 2016 19:26:04 +0000 (UTC) From: "Ronald B. Frerker" <rbfrer...@yahoo.com> To: "cnc-list@cnc-list.com" <cnc-list@cnc-list.com> Subject: Stus-List Handicap questions for JAM racers Message-ID: <1620292786.1504268.1456255564054.javamail.ya...@mail.yahoo.com> Content-Type: text/plain; charset="utf-8" Greetings folks,We have a problem with how to handicap boats that race with jib and main only (JAM). ?The PHRF handicaps basically are for spinnaker racing. ?I believe that there were some clubs, a few only, that adjust numbers for JAM boats. ?We make adjustments to the numbers for our lake conditions and style of boat (older displacement etc.), but not sure how to fix JAM.Polars that I have seen for about 6 boats all show with chute only. ?Does anyone know if there are polars for downwind sailing without chutes? ?How can one arrive at those speeds?Could some of you whose clubs adjust numbers let me know any info you can on how that is accomplished at your club? ?And the rationale behind the adjustment.If it gets too specific for the whole list, we can take it offline later to keep traffic down.ThanksRonWild CheriC&C 30-1STL
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