Southern Collegiate Offshore Regatta - PHRF B

# SchoolTeam A TOT
1 University of South Carolina University of South Carolina Gamecocks 12 12
2 Princeton University Princeton University Tigers 13 13
3 University of Vermont University of Vermont Catamounts 16 16
4 The Citadel The Citadel Bulldogs 26 26
5 Georgia Institute of Technology Georgia Institute of Technology Yellow Jackets 31 31
6 North Carolina State University North Carolina State University Wolfpack 38 38
7 Embry-Riddle University Embry-Riddle University Eagles 39 39
8 University of Wisconsin University of Wisconsin Badgers 41 41
SchoolTeam R1 R2 R3 R4 R5 R6 TOT
University of South Carolina University of South Carolina Gamecocks 1 3 4 2 1 1 12
Princeton University Princeton University Tigers 3 2 2 1 2 3 13
University of Vermont University of Vermont Catamounts 2 1 1 3 7 2 16
The Citadel The Citadel Bulldogs 4 4 7 4 3 4 26
Georgia Institute of Technology Georgia Institute of Technology Yellow Jackets 6 5 3 6 4 7 31
North Carolina State University North Carolina State University Wolfpack 8 7 8 5 5 5 38
Embry-Riddle University Embry-Riddle University Eagles 5 6 6 8 8 6 39
University of Wisconsin University of Wisconsin Badgers 7 8 5 7 6 8 41

Performance rating asks, for each skipper: holding every other boat fixed, which rating makes my actual race-by-race finishes least surprising? Boats are valued with the keelboat rating rather than the fleet rating: 0.41 × the skipper's fleet rating from the week before the event (unrated skippers start at 0.47); 0.28 × the mean fleet rating of the rated crew aboard; the skipper's own keelboat offset; the school's program effect. Non-finishes (OCS, DNF and similar) are left out of the fitting, as in the rating model.

Percentile places a rating among the 207 ICSA sailors with a keelboat rating who raced the discipline in the last three seasons. Surprise is how many bits more surprising the finishes were at the pre-event rating than at the performance rating. P(this good or better) simulates the event 3,000 times at the pre-event ratings, with the same regatta-form model as the fleet analysis pages, and reports how often the skipper would score this many points or fewer in the races they sailed.

The keelboat offsets are the current ones (the discipline files keep no weekly history), so a skipper's own offset has already seen this event; offsets are shrunk hard, so the effect is a few hundredths at most. Only skippers are rated.

Division A  8 boats · 6 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1James Thurlow '24University of South Carolina6/60.862.59+1.7268th → 99th5.74%2.0 / 4.2
2Jasper Waldman '25Princeton University6/60.802.45+1.6664th → 99th5.65%2.2 / 4.4
3Liam Harkins '23University of Vermont6/60.121.92+1.8021st → 98th6.73%2.7 / 5.3
4Gregory Walters '23The Citadel6/60.571.10+0.5454th → 77th0.843%4.3 / 4.7
5Theodore Goldenberg '23Georgia Institute of Technology6/60.710.87+0.1758th → 68th0.172%5.2 / 4.4
6Blake Daniel '23North Carolina State University6/6-0.020.13+0.1515th → 22nd0.175%6.3 / 5.5
7Kevin Martin '24Embry-Riddle University6/60.96-0.08−1.0473rd → 13th3.497%6.5 / 4.1
8Jack Schweda '24University of Wisconsin6/61.39-0.46−1.8688th → 3rd12.5>99%6.8 / 3.5

Conditions — 02/11/2023 (8am–6pm)

🌦️Moderate drizzle
Humidity 91%  ·  Pressure 1020.5 hPa

Temperature

54°F
↑ 56°F   ↓ 51°F
Feels like 48°F

Wind

● from   ▲ toward
12.4 kn
avg  ·  max 14.3 kn
Gusts to 26.0 kn
From NE (55°)

Sky & Precipitation

Cloud cover100% Sunshine0.0 hrs Humidity91% Pressure1020.5 hPa Rain0.44 in

What this breeze does at Charleston — from fleet racing

Breeze: NE about 14 kn (weather reanalysis in the scorer’s units)
In fleet races at Charleston in this breeze: a favourites’ day (+0.05)
Favourites’ conditions: in fleet racing here the results follow the ratings more closely than usual, and the top seeds hold their places.

Orderliness is how tightly a fleet race’s finishing order follows the pre-regatta ratings, relative to a typical event (0): positive is the favourites’ day, negative the underdogs’. A value of ±0.05 means a rating gap counts about 4% more than on a typical day. This event is not a fleet race the rating model scores, so there is no actual value for it: this is what this venue’s fleet racing history says about the breeze on the day, read off the chart at the star. How this is estimated · compare venues.

Orderliness beyond the fleet at Charleston by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (69 labelled fleet-race days at Charleston).

From the notes

Short write-ups of what the ratings and results show, with the numbers and how they were computed.

All notes →