NWISA Keelboat Championship

# SchoolTeam A TOT
1 Olympia High School Olympia High School Bears 7 7
2 Kingston High School Kingston High School Kraken 8 8
3 Ballard High School Ballard High School Beavers 13 13
4 Capital High School Capital High School Cougars 14 14
SchoolTeam R1 R2 R3 R4 TOT
Olympia High School Olympia High School Bears 2 1 2 2 7
Kingston High School Kingston High School Kraken 1 3 3 1 8
Ballard High School Ballard High School Beavers 4 DNF 1 3 13
Capital High School Capital High School Cougars 3 2 DNF 4 14
School Team Sailors
Ballard High School Ballard High School Beavers SkipperHenry Thomas '27 [1-4]
CrewIsadora Ford '27 [1-4]
CrewSimone Ford '24 [1-4]
CrewPhoebe Howe '24 [1-4]
Capital High School Capital High School Cougars SkipperAlijah Manzanares '25 [1-4]
CrewRyan Solie '25 [1-4]
CrewSeher Kasmani '27 [1-4]
CrewAidan Budelman '25 [1-4]
Kingston High School Kingston High School Kraken SkipperShelby Chandler '25 [1-4]
CrewAcadia Tweed-Kent '25 [1-4]
CrewDylan Sprague '26 [1-4]
CrewRyan Pavey '26 [1-4]
Olympia High School Olympia High School Bears SkipperLiam Power '25 [1-4]
CrewSimone Reck '27 [1-4]
CrewLiam Taylor '25 [1-4]
CrewCharlie Snyder '24 [1-4]

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 78 ISSA 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  4 boats · 4 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Liam Power '25Olympia High School4/40.851.36+0.5168th → 92nd0.334%1.8 / 2.2
2Shelby Chandler '25Kingston High School4/40.100.49+0.3810th → 37th0.119%2.0 / 2.8
3Henry Thomas '27Ballard High School4/40.640.11−0.5351st → 10th0.391%3.2 / 2.4
4Alijah Manzanares '25Capital High School4/40.28-0.06−0.3519th → 4th0.192%3.5 / 2.6

Conditions — 10/07/2023 (8am–6pm)

☀️Clear sky
Humidity 71%  ·  Pressure 1012.5 hPa

Temperature

66°F
↑ 73°F   ↓ 53°F
Feels like 68°F

Wind

● from   ▲ toward
1.6 kn
avg  ·  max 2.6 kn
Gusts to 8.0 kn
From SW (220°)

Sky & Precipitation

Cloud cover2% Sunshine10.6 hrs Humidity71% Pressure1012.5 hPa

What this breeze does at Ballard — from fleet racing

Breeze: SW about 5 kn (weather reanalysis in the scorer’s units)
In fleet races at Ballard in this breeze: an underdogs’ day (−0.04)
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 ±0.04 means a rating gap counts about 3% 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 Ballard by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (no labelled days at Ballard: 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 →