NESSA Healy Trophy - ILCA 7

SchoolSailor R1 R2 R3 R4 R5 R6 R7 TOT
The Hotchkiss School The Hotchkiss School Caleb Kinnear '25 3 1 1 1 1 2 1 10
Darien High School Darien High School Conrad Straden '24 1 3 2 3 2 1 2 14
Marblehead High School Marblehead High School Nicolas Regnault '25 2 6 4 2 3 4 3 24
Tabor Academy Tabor Academy Peter Herlihy '25 5 2 3 4 5 3 5 27
Fairfield Prep Fairfield Prep Charlie Capporino '24 4 4 5 5 4 7 4 33
Greenwich Country Day School Greenwich Country Day School Owen Chickering '25 6 5 7 6 7 5 6 42
Champlain VUHS Champlain VUHS Olen Purcell '29 7 7 6 7 6 6 7 46

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  7 boats · 7 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Caleb Kinnear '25The Hotchkiss School7/72.564.48+1.9292nd → 99th4.03%1.4 / 2.8
2Conrad Straden '24Darien High School7/71.463.48+2.0272nd → 99th5.82%2.0 / 3.9
3Nicolas Regnault '25Marblehead High School7/71.011.92+0.9158th → 82nd1.523%3.4 / 4.3
4Peter Herlihy '25Tabor Academy7/72.111.45−0.6684th → 71st1.076%3.9 / 3.3
5Charlie Capporino '24Fairfield Prep7/71.330.91−0.4367th → 54th0.477%4.7 / 4.0
6Owen Chickering '25Greenwich Country Day School7/70.290.03−0.2730th → 22nd0.183%6.0 / 5.0
7Olen Purcell '29Champlain VUHS7/70.66u-1.07−1.7344th → 4th4.998%6.6 / 4.7

Conditions — 09/23/2023 (8am–6pm)

🌧️Moderate rain
Humidity 92%  ·  Pressure 1023.8 hPa

Temperature

59°F
↑ 60°F   ↓ 58°F
Feels like 56°F

Wind

● from   ▲ toward
10.8 kn
avg  ·  max 13.8 kn
Gusts to 27.0 kn
From ENE (62°)

Sky & Precipitation

Cloud cover100% Sunshine0.0 hrs Humidity92% Pressure1023.8 hPa Rain1.28 in

What this breeze does at Hyannis YC — from fleet racing

Breeze: NE about 12 kn (weather reanalysis in the scorer’s units)
In fleet races at Hyannis YC in this breeze: a favourites’ day (+0.07)
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 ±0.07 means a rating gap counts about 7% 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 Hyannis YC by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (only 3 labelled days at Hyannis YC, 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 →