NWISA Keelboat Championship

# SchoolTeam A TOT
1 Olympia High School Olympia High School Bears 8 8
2 Central Kitsap High School Central Kitsap High School Cougars 10 10
3 Charles Wright High School Charles Wright High School Tarriers 13 13
4 Gig Harbor High School Gig Harbor High School Tides 13 13
5 Sehome High School Sehome High School Mariners 16 16
SchoolTeam R1 R2 R3 R4 TOT
Olympia High School Olympia High School Bears 1 1 3 3 8
Central Kitsap High School Central Kitsap High School Cougars 4 3 1 2 10
Charles Wright High School Charles Wright High School Tarriers 2 2 5 4 13
Gig Harbor High School Gig Harbor High School Tides 5 5 2 1 13
Sehome High School Sehome High School Mariners 3 4 4 5 16
School Team Sailors
Central Kitsap High School Central Kitsap High School Cougars SkipperNiko Twilla '18
CrewShea Kuligowski '19
CrewTyler Nolasco '19
Charles Wright High School Charles Wright High School Tarriers SkipperJack Corddry '19
CrewAlyosha Strum-Palerm '18
CrewHayden Flaskerud '20
Gig Harbor High School Gig Harbor High School Tides SkipperRyan Squires '18
CrewAxel Stordahl '20
CrewRipley Morris '20
Olympia High School Olympia High School Bears SkipperMax Miller '18
CrewIan Connolly '21
CrewEvan Krug '19
CrewCiara McClanahan '20
Sehome High School Sehome High School Mariners SkipperLera Anders '18
CrewMallory Hood '18
CrewCedric Keneipp '19
CrewCasey Malone '20

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  5 boats · 4 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Max Miller '18Olympia High School4/41.182.05+0.8785th → 99th1.027%2.0 / 2.8
2Niko Twilla '18Central Kitsap High School4/40.641.56+0.9251st → 94th1.325%2.5 / 3.3
3Jack Corddry '19Charles Wright High School4/40.960.77−0.2073rd → 60th0.166%3.2 / 3.0
3Ryan Squires '18Gig Harbor High School4/40.820.24−0.5865th → 19th0.462%3.2 / 3.1
5Lera Anders '18Sehome High School4/41.010.29−0.7274th → 19th1.090%4.0 / 2.9

Conditions — 10/14/2017 (8am–6pm)

☁️Overcast
Humidity 68%  ·  Pressure 1031.9 hPa

Temperature

48°F
↑ 50°F   ↓ 44°F
Feels like 42°F

Wind

● from   ▲ toward
6.4 kn
avg  ·  max 7.9 kn
Gusts to 18.7 kn
From SSE (155°)

Sky & Precipitation

Cloud cover97% Sunshine0.9 hrs Humidity68% Pressure1031.9 hPa

What this breeze does at Sehome — from fleet racing

Breeze: SE about 9 kn (weather reanalysis in the scorer’s units)
In fleet races at Sehome 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 Sehome by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (only 2 labelled days at Sehome, 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 →