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PHRF Certificate - Eastern Connecticut Sailing Association - a discussion (updated August 22, 2014)  
   

While this certificate for Marionette is dated 2007, it was identical through 2012 (too lazy to scan and change!). The 2013 certificate has minor changes and is further below, as is the 2014 certificate.

To get an idea how Marionette rates against her usual PHRF competition here is a results summary of one of her races.

Off Soundings Club Race 1, Friday, June 13, 2008 - Watch Hill to Block Island

Position
Boat Name
Boat Type
PHRF
OSC PE%
TCF
elapsed time
corrected time 
1
Marionette
Dolphin 24
252
0
0.8197
3:43:15
3:03:00
2
Water Colors
Morgan 28
208
0
0.8721
3:37:46
3:09:55
3
Rusty Nail
Pearson 31
176
0.15
0.9494
3:30:22
3:19:43
4
Tigger
PT-32
151
0
0.9509
3:30:06
3:19:47
5
Salud
Pearson 30
172
0.15
0.9554
3:30:47
3:21:23
6
Checkered Demon
Holland CTM 1/2 Ton
161
0.1
0.9600
3:30:27
3:22:02
7
Euphoria
Pearson 30
174
0.15
0.9524
3:37:21
3:27:00
8
Park Place
O'Day 34
150
0
0.9524
3:43:06
3:32:29
9
ShowTime
Beneteau 30E
166
0.2
0.9772
4:24:12
3:52:47
10
Gra
Saber 28-2
201
0
0.8811
4:24:12
3:52:47
11
Jolly Mon
C&C Redwing
195
0.15
0.9217
4:13:08
3:53:18
12
Tigger Too
Pearson 31
178
0
0.9119
4:24:02
4:00:46

TCF (Time Correction Factor) is an Off Soundings Club rating assigned to each boat's actual finishing time based on each individual boat's PHRF rating, conversion from the Time on Distance (TOD) handicap system to a Time on Time (TOT) system, plus a penalty assigned based on recent race results. For example, in the above chart, Rusty Nail carried a 15% penalty on her rating of 176, giving her a revised effective rating of 176 - (.15x176) = 176 - 26.4 or 150.

PHRF is a seconds per mile rating system which the Off Soundings Club converts from a seconds per mile handicap (TOD) to a time based handicap (TOT). Click here to go to US Sailing's webpage describing the differences. This get a bit complicated but is easier to understand if we stay with Time on Distance (TOD)

Watercolors PHRF of 208 is 44 seconds/mile lower than Marionette's so, for simplicity purposes, if the above race had a distance of about 18 miles the rating difference between the 2 boats is 13 minutes, 30 seconds. Watercolors' elapsed time of 3:37:46 was 5:19 better than Marionette's, but Marionette's rating advantage was 0:13:30 so Marionette won by 0:08:11 using TOD. She actually won by 0:06:55 using the TOT system.

****************************************

June 17, 2013. Marionette was issued a new PHRF certificate in 2013. There was no change in the final rating but some of the imputs were updated

**********************************

2014 PHRF Certificate - Click Here - posted August 22, 2014

 

 

 

 
   
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