phrf rating

Does any one know the rating for a H18 SX with a spinaker rig. I am racing in the Delta Ditch run and need to know the rating. Thanks,

71.3(which btw is the same number for 18se without spins) The rest of us are screwed for any multi fleet racing.

H18SX 71.3
H18 71.4

http://www.ussailing.org/portsmouth/tables08/tables08mh.asp

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1992 Hobie Cat 18 #16943
Hobie Fleet 198, Rapid City, SD

never having used Portsmouth ratings, how do they convert to PHRF ratings?.. or are they the same?

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Chris
'88 H18SE Arís

They're not the same...

The Portsmouth rating is derived from actual race results over time, and is one standard for all locations. From the US Sailing Portsmouth Yardstick explanation:

The 2008 North American Portsmouth Yardstick for centerboard boats, multihulls, keelboats and offshore classes are posted herein. The Yardstick is a widely used method of rating boats of different classes sailing the same courses and is used by clubs and fleets across the country. It is a time-on-time handicapping system and is derived from actual records of classes of boats with thoroughly documented ratings. Portsmouth Numbers are defined as the length of time boats would take to sail a common but unspecified distance. The formula is easy to use:
CT (Corrected Time) = ET (Elapsed Time) X 100 / HC (Handicap)



The PHRF ((Performance Handicap Rating Formula") is intended to "level the playing field" when dissimilar boats are racing each other. The PHRF assumes the boat is sailing to its fullest potential, and the differences between the performance of the boats in the race is then decided by the wisdom, skill and perhaps luck, of the skipper.

The rating may vary from location to location, based on the local racing organization’s calculations. A single local organization may have different ratings for different sailing venues. The rating may also change as the committee looks at individual races.


A quick conversion table can be found here:
http://www.ussailing.org/portsmouth/table_v.asp

So the H18 at 71.3 or 4 would be around 97 or 98

_________________
1992 Hobie Cat 18 #16943
Hobie Fleet 198, Rapid City, SD

thanks for the link to the ratings conversion. It's a big help.

PHRF ratings do rely on sailing to the boat's maximum potential, but then all rating formulas should do that as well. Crew/Skipper experience, weather conditions, et al, should have no bearing on a boat's rating. Only the boats physical attributes (sail size, furlers, keel, etc.)

In the last 10 years I've been racing both PHRF and OD, I've never seen a rating changed race to race from what the issued PHRF certificate states. Our division, PHRF-MA (mid atlantic) governs ratings in our area and changes to one's rating is only through formal application with justification.

There are however, some fairly weird ratings for boats though. Imagine a 36' J109 rating 75 and a Melges 24 rating 99, in the same race division. In fact, I'd love to get out against the Melges we see ever Wed. night with my H18 at almost the same PHRF rating, to see how a match would go.

That being said, none of the races I've been in from Block Island to Annapolis has used portsmouth numbers. I must be in the wrong circle.

Thanks again,

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Chris
'88 H18SE Arís

Does this number include wings? If I remember, the stock SX spinnaker system relies on the wings. Sailing a spin without the wings may affect the rating since the boat will be about 40 lbs. lighter.

There are no modifcation factors for removing wings as well as updating the spin or adding a snuffer.
So again I am still perplexed how you can have basically the same boat except one with a spin and one without and have the same number???

OK then. It sounds like I need to get set up with a spinnaker and be the regatta sandbagger.

If you sail an SX then you can create a true portsmouth sleeper. As my platform is truely an SE I take many hits and still the boat does well in open class if I sail it worth a crap. My biggest racing issue is the light air lake stuff, I hate it!

Good luck . Let us know how you do.Btw if you decide not to use your spin

SN Class normally with spinnaker, genoa, reacher, hooter or wire/rope luff headsail attached to a pole, not equipped with one 1.020 1.030 1.025 1.020 1.010


your number goes up.???? 72.76 Still perplexed.

Maybe it goes up because it is assumed the wings are still used?

Would be interesting to know how the original poster did.

The results of the race are no longer posted on the Stockton Sailing Club's web site, but Google cached the results. Poor ole Mike got last place in the multihull division, however his corrected time of 8 hours 44 minutes was faster than the fastest monohull by 32 minutes (9 hours 15 minutes). So out of 123 boats finishing he got 18th overall.

The first place F18's corrected time was 6 hours 2 minutes, or faster than the fastest monohull by 3 hours 13 minutes and got first place overall.