Southern Collegiate Offshore Regatta (SCOR) A Div

# SchoolTeam A TOT
1 U. S. Naval Academy U. S. Naval Academy Midshipmen 13 13
2 College of Charleston College of Charleston Cougars 15 15
3 Eckerd College Eckerd College Tritons 22 22
4 California Maritime Academy California Maritime Academy Keelhaulers 26 26
5 University of Michigan University of Michigan Wolverines 32 32
SchoolTeam R1 R2 R3 R4 R5 R6 R7 TOT
U. S. Naval Academy U. S. Naval Academy Midshipmen 1 1 2 3 4 1 1 13
College of Charleston College of Charleston Cougars 2 2 DSQ 1 1 3 4 15
Eckerd College Eckerd College Tritons 3 5 DNF 2 2 2 2 22
California Maritime Academy California Maritime Academy Keelhaulers 5 4 3 4 3 4 3 26
University of Michigan University of Michigan Wolverines 4 3 4 5 DNF 5 5 32

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 · 7 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1George Davis '19U. S. Naval Academy7/71.67u3.07+1.4094th → 99th3.711%1.9 / 2.8
2Jordan Wiggins '20College of Charleston7/71.80u2.58+0.7896th → 99th1.253%2.7 / 2.7
3Connor Ratcliff '21Eckerd College7/71.602.19+0.6091st → 99th0.866%3.1 / 2.9
4Johannes McElvain '18California Maritime Academy7/72.410.59−1.8299th → 54th10.298%3.7 / 2.2
5Kyle Doyle '20University of Michigan7/7-0.180.55+0.749th → 53rd0.670%4.6 / 4.3

Conditions — 02/16/2019 (8am–6pm)

🌦️Light drizzle
Humidity 82%  ·  Pressure 1008.2 hPa

Temperature

63°F
↑ 69°F   ↓ 56°F
Feels like 62°F

Wind

● from   ▲ toward
9.1 kn
avg  ·  max 12.4 kn
Gusts to 22.4 kn
From SW (220°)

Sky & Precipitation

Cloud cover83% Sunshine3.3 hrs Humidity82% Pressure1008.2 hPa Rain0.07 in

What this breeze does at Charleston — from fleet racing

Breeze: SW about 11 kn (weather reanalysis in the scorer’s units)
In fleet races at Charleston in this breeze: a favourites’ day (+0.04)
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 ±0.04 means a rating gap counts about 3% 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 →