VISA Keelboat Qualifier

# SchoolTeam A TOT
1 Hampton Roads Academy Hampton Roads Academy Navigators 3 3
2 Christchurch School Christchurch School Seahorses 6 6
3 Nansemond-Suffolk Academy Nansemond-Suffolk Academy Saints 8 8
SchoolTeam R1 R2 R3 TOT
Hampton Roads Academy Hampton Roads Academy Navigators 1 1 1 3
Christchurch School Christchurch School Seahorses 2 2 BKD 6
Nansemond-Suffolk Academy Nansemond-Suffolk Academy Saints 3 3 2 8
School Team Sailors
Christchurch School Christchurch School Seahorses SkipperCarlos Bermudez de Castro Castro '22 [1-3]
CrewAidan Iaconis '22 [1-3]
CrewPJ Rodrigues JR '24 [1-3]
CrewEmilie Janzen '22 [1-3]
Hampton Roads Academy Hampton Roads Academy Navigators SkipperParker Moore '25 [1-3]
CrewPierce Brindley '24 [1-3]
CrewAlec Reed '23 [1-3]
CrewLiam Ambrosino '23 [1-3]
Nansemond-Suffolk Academy Nansemond-Suffolk Academy Saints SkipperKyle Pfrang '22 [1-3]
CrewBennett Parker '24 [1-3]
CrewKevin Li '23 [1-3]
CrewLeila Pfrang '25 [1-3]

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.

  • — in the performance column: last in every race sailed, so no finite least-surprisal rating exists.

Division A  3 boats · 3 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1Parker Moore '25Hampton Roads Academy3/31.527.00++5.4892nd → 99th5.13%1.0 / 2.2
2Carlos Bermudez de Castro Castro '22Christchurch School3/32.211.97−0.2499th → 99th0.097%2.7 / 1.8
2Kyle Pfrang '22Nansemond-Suffolk Academy3/31.65——99th → —3.391%2.7 / 2.1

Conditions — 10/28/2021 (8am–6pm)

☁️Overcast
Humidity 71%  ·  Pressure 1012.6 hPa

Temperature

64°F
↑ 65°F   ↓ 59°F
Feels like 61°F

Wind

● from   ▲ toward
8.8 kn
avg  ·  max 11.0 kn
Gusts to 20.0 kn
From E (81°)

Sky & Precipitation

Cloud cover97% Sunshine9.1 hrs Humidity71% Pressure1012.6 hPa Rain0.02 in

What this breeze does at Hampton Yacht Club — from fleet racing

Breeze: E about 11 kn (weather reanalysis in the scorer’s units)
In fleet races at Hampton Yacht Club in this breeze: a favourites’ day (+0.04)
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 ±0.04 means a rating gap counts about 3% 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 Hampton Yacht Club by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (no labelled days at Hampton Yacht Club: 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 →