Different PHRF organizations in different parts of the country assign ratings 
based on performance (the P in PHRF).  If the boat does better in heavy 
weather, for example, its racing results will be better in regions where there 
is more wind (and thus a lower base rating).  If it’s a light air boat, the 
opposite is true.  Then there’s design/construction differences, modifications, 
props, roller furlers, mast size, etc.  In addition, a base rating could be 
changed as a result of a rating adjustment request or a competitor’s challenge. 
 And my personal favorite, local politics.

From: dwight veinot via CnC-List 
Sent: Tuesday, June 11, 2019 8:56 AM
To: cnc-list@cnc-list.com 
Cc: dwight veinot 
Subject: Re: Stus-List 30 MK I PHRF Rating

Most of our best racing fun happens whenever we see another mast on a boat with 
similar rating to Alianna. These “races” usually take less than 15 min to 
decide who has the edge on any particular tack then we break away to have fun 
going wherever we want to go. That said we have done hundreds of handicapped 
races and the one positive i will note about those is that they were an 
excellent way to learn how to sail for best performance. So handicap racing is 
a learning experience not to be taken too seriously. I never really liked 
Spending a nice day on the water sailing a course that someone else had set and 
which often resulted in collisions and most often congestion at marks on 
otherwise open water. Amazing what some racers will do at the start line and 
mark rounding in particular to gain an advantage given that most enter these 
races with a rather limited knowledge of the racing rules of sailing and are 
operating rather expensive toys with valuable but often ill informed lives 
aboard. Nuff said

On Mon, Jun 10, 2019 at 5:26 PM Randy Stafford via CnC-List 
<cnc-list@cnc-list.com> wrote:

  Listers- 

  Looking at US Sailing’s “History of US PHRF Affiliated Fleet Handicaps” 
(https://www.ussailing.org/competition/offshore/phrf/phrf-handicaps/), you can 
see that there is a range of ratings for the 30 MK I across different fleets, 
from 168 to 186 seconds per nautical mile.  Note I believe that the “C&C 30” 
and “C&C 30 (1-506)” models are the same boat in that document’s tables.

  I’m trying to understand why that is.  The mode, or most often occurring 
rating, is 174.  That’s with spinnaker, and generally assumes a folding prop, 
from what I understand.  But why would the Newfoundland fleet rate the boat at 
168 sec/nm, for example, and the Northwest fleet rate it at 186?

  If we have any listers from those fleets / Regional Sailing Associations who 
can shed light on this question, I’d be very interested.

  When my boat was first rated by my RSA (https://rmsail.org, in US Sailing’s 
Area F) back in 2016, she was given a rating of 186, with a fixed two-blade 
prop.  Her rating stayed at 186 after I got a folding prop for the 2017 season 
and beyond.

  Now my RSA is re-rating all boats in the region.  I believe the handicapper 
is primarily looking at the above US Sailing document, and probably choosing 
the most-often occurring rating as the base.  So I believe my boat’s rating 
will probably change to 174.

  Can anyone explain the range of ratings?

  Thank You,
  Randy Stafford
  S/V Grenadine
  C&C 30-1 #7
  Ken Caryl, CO
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