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This certificate for Marionette is dated 2007. Very little change, specification rating wise, through 2019.
To get an idea how Marionette rates against her usual PHRF competition here is a results summary of one of her spinnaker 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.
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April 5, 2018 This is Marionette's 2018 PHRF Certificate. Note the addition of the Time on Time formula - PHRF = (650/TCF-550). A discussion of why this TOT formula vs one of the other 4, or why TOT vs TOD
will require pages of discussion - maybe some day......
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May 18, 2019 - Marionette's 2019 PHRF Certificate
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