2025 SEISA Singlehanded Qualifier (ILCA6 Girls)

SchoolSailor R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 TOT
Clear Lake High School Clear Lake High School Sydney Small '28 1 1 1 1 1 1 1 1 2 3 1 1 15
Clear Falls High School Clear Falls High School Madeleine Perdue '27 2 3 2 2 2 3 2 2 1 1 2 2 24
Lutheran South Academy Lutheran South Academy Lily Poindexter '28 3 2 4 3 3 2 3 3 3 2 3 3 34
Mount Carmel Academy Mount Carmel Academy Katharine Frost '29 4 4 3 4 4 4 4 4 4 4 5 4 48
Saint Stanislaus Saint Stanislaus Karoline Burroughs '26 5 5 5 5 5 5 5 5 5 5 4 5 59
Magellan International School Magellan International School Emily Nash '29 DNS DNS DNS DNS DNS DNS DNS DNS DNS DNS DNS DNS 84

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 singlehanded rating rather than the fleet rating: 0.79 × the skipper's fleet rating from the week before the event (unrated skippers start at 1.11); the skipper's own singlehanded offset. Strength differences are scaled by 0.80 before they become probabilities, the value that calibrates the model on seasons it had not seen. Non-finishes (OCS, DNF and similar) are left out of the fitting, as in the rating model.

Percentile places a rating among the 495 ISSA sailors with a singlehanded 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 singlehanded 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  6 boats · 12 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Sydney Small '28Clear Lake High School12/123.074.53+1.4699th → 99th2.86%1.2 / 2.0
2Madeleine Perdue '27Clear Falls High School12/122.40u2.56+0.1691st → 92nd0.128%2.0 / 2.5
3Lily Poindexter '28Lutheran South Academy12/121.36u1.46+0.1068th → 72nd0.032%2.8 / 3.2
4Katharine Frost '29Mount Carmel Academy12/12-0.17-0.01+0.1717th → 21st0.131%4.0 / 4.4
5Karoline Burroughs '26Saint Stanislaus12/12-0.79-3.50−2.706th → 1st6.357%4.9 / 4.8
6Emily Nash '29Magellan International School12/120.16——26th → —0.0>99%7.0 / 4.1

Conditions — 09/27/2025 (8am–6pm)

☀️Clear sky
Humidity 59%  ·  Pressure 1014.2 hPa

Temperature

80°F
↑ 84°F   ↓ 71°F
Feels like 84°F

Wind

● from   ▲ toward
3.9 kn
avg  ·  max 5.2 kn
Gusts to 12.6 kn
From NE (36°)

Sky & Precipitation

Cloud cover10% Sunshine10.8 hrs Humidity59% Pressure1014.2 hPa

What this breeze does at Clear Falls — from fleet racing

Breeze: NE about 7 kn (weather reanalysis in the scorer’s units)
In fleet races at Clear Falls in this breeze: a favourites’ day (+0.10)
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 ±0.10 means a rating gap counts about 8% 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 Clear Falls by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (only 9 labelled days at Clear Falls, so the surface is mostly the all-venue pattern).

From the notes

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

All notes →