Southern Collegiate Offshore - A

# SchoolTeam A TOT
1 U. S. Naval Academy U. S. Naval Academy Midshipmen 16 16
2 College of Charleston College of Charleston Cougars 20 20
3 Eckerd College Eckerd College Tritons 24 24
4 Florida State University Florida State University Seminoles 27 27
5 Clemson University Clemson University Tigers 33 33
SchoolTeam R1 R2 R3 R4 R5 R6 R7 R8 TOT
U. S. Naval Academy U. S. Naval Academy Midshipmen 2 2 4 1 3 1 1 2 16
College of Charleston College of Charleston Cougars 1 1 2 4 2 2 4 4 20
Eckerd College Eckerd College Tritons 3 3 1 2 5 4 3 3 24
Florida State University Florida State University Seminoles 5 5 5 5 1 3 2 1 27
Clemson University Clemson University Tigers 4 4 3 3 4 5 5 5 33

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.

  • u no fleet rating — the model's level for unrated skippers is the baseline.

Division A  5 boats · 8 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Donald Poirier '21U. S. Naval Academy8/81.67u2.71+1.0494th → 99th2.815%2.0 / 2.9
2Stuart Henry '21College of Charleston8/82.211.89−0.3399th → 97th0.360%2.5 / 2.4
3Connor Ratcliff '21Eckerd College8/81.741.54−0.2094th → 91st0.164%3.0 / 2.8
4Jeffrey Hayden '20Florida State University8/81.620.66−0.9592nd → 57th2.275%3.4 / 2.9
5Cameron Rylance '19Clemson University8/80.320.98+0.6640th → 73rd1.156%4.1 / 4.0

Conditions — 02/15/2020 (8am–6pm)

☀️Clear sky
Humidity 70%  ·  Pressure 1031.5 hPa

Temperature

50°F
↑ 54°F   ↓ 41°F
Feels like 43°F

Wind

● from   ▲ toward
10.4 kn
avg  ·  max 12.5 kn
Gusts to 23.3 kn
From ENE (62°)

Sky & Precipitation

Cloud cover20% Sunshine9.9 hrs Humidity70% Pressure1031.5 hPa

What this breeze does at Charleston — from fleet racing

Breeze: NE about 12 kn (weather reanalysis in the scorer’s units)
In fleet races at Charleston in this breeze: a favourites’ day (+0.03)
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 ±0.03 means a rating gap counts about 2% 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 →