The Burke Thomas Trophy - ILCA 7

# SchoolSailor TOT
1 Bainbridge High School Bainbridge High School Joseph Tappen '25 33
2 Olympia High School Olympia High School Liam Power '25 37
3 South Whidbey High School South Whidbey High School Colin Byler '24 46
4 Lynwood High School Lynwood High School Nathan Pease '24 51
5 Orcas High School Orcas High School Moose Kinsey '24 61
SchoolSailor R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 TOT
Bainbridge High School Bainbridge High School Joseph Tappen '25 4 1 3 3 1 2 1 1 1 4 2 1 3 1 5 33
Olympia High School Olympia High School Liam Power '25 2 3 1 2 3 1 DNF 2 4 2 3 2 2 3 1 37
South Whidbey High School South Whidbey High School Colin Byler '24 3 4 5 4 4 3 2 3 3 1 1 3 4 4 2 46
Lynwood High School Lynwood High School Nathan Pease '24 1 2 2 1 2 4 3 5 5 5 DNS DNS 1 5 3 51
Orcas High School Orcas High School Moose Kinsey '24 5 5 4 5 5 5 4 4 2 3 4 4 5 2 4 61

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.

Division A  5 boats · 15 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Joseph Tappen '25Bainbridge High School15/150.491.37+0.8838th → 68th2.513%2.2 / 3.0
2Liam Power '25Olympia High School15/150.901.47+0.5654th → 72nd1.042%2.5 / 2.7
3Colin Byler '24South Whidbey High School15/150.780.36−0.4250th → 33rd0.871%3.1 / 2.8
4Nathan Pease '24Lynwood High School15/150.370.21−0.1633rd → 27th0.169%3.4 / 3.1
5Moose Kinsey '24Orcas High School15/15-0.22-1.01−0.7916th → 4th1.782%4.1 / 3.5

Conditions — 09/16/2023 (8am–6pm)

☀️Clear sky
Humidity 63%  ·  Pressure 1014.0 hPa

Temperature

67°F
↑ 75°F   ↓ 56°F
Feels like 67°F

Wind

● from   ▲ toward
3.6 kn
avg  ·  max 8.6 kn
Gusts to 15.6 kn
From N (354°)

Sky & Precipitation

Cloud cover2% Sunshine11.0 hrs Humidity63% Pressure1014.0 hPa

What this breeze does at Corinthian Yacht Club of Seattle — from fleet racing

Breeze: N about 7 kn (weather reanalysis in the scorer’s units)
In fleet races at Corinthian Yacht Club of Seattle in this breeze: an underdogs’ day (−0.03)
Underdogs’ conditions: in fleet racing here the fleet bunches up and lower-rated boats beat the seeds more often than usual.

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% less 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 Corinthian Yacht Club of Seattle by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (no labelled days at Corinthian Yacht Club of Seattle: the all-venue pattern is shown).

From the notes

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

All notes →