Kruger Cup

# SchoolTeam A TOT
1 Maine Maritime Academy Maine Maritime Academy Mariners 18 18
2 Tufts University Tufts University Jumbos 23 23
3 U. S. Coast Guard Academy U. S. Coast Guard Academy Bears 1 35 35
4 Roger Williams University Roger Williams University Hawks 46 46
5 Massachusetts Maritime Academy Massachusetts Maritime Academy Buccaneers 54 54
6 University of New Hampshire University of New Hampshire Wildcats 57 57
7 Northeastern University Northeastern University Huskies 65 65
8 Williams College Williams College Ephs 71 71
9 U. S. Coast Guard Academy U. S. Coast Guard Academy Bears 2 82 82
SchoolTeam R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 TOT
Maine Maritime Academy Maine Maritime Academy Mariners 1 2 3 1 2 1 5 1 1 1 18
Tufts University Tufts University Jumbos 4 1 1 2 1 2 2 4 4 2 23
U. S. Coast Guard Academy U. S. Coast Guard Academy Bears 1 2 4 2 4 3 4 3 2 7 4 35
Roger Williams University Roger Williams University Hawks 3 5 4 3 4 5 1 7 8 6 46
Massachusetts Maritime Academy Massachusetts Maritime Academy Buccaneers 5 3 5 6 9 3 4 6 6 7 54
University of New Hampshire University of New Hampshire Wildcats 7 6 7 5 5 7 6 3 3 8 57
Northeastern University Northeastern University Huskies 9 7 6 8 6 6 8 8 2 5 65
Williams College Williams College Ephs 8 8 8 RAF 7 8 9 5 5 3 71
U. S. Coast Guard Academy U. S. Coast Guard Academy Bears 2 6 9 9 7 8 9 7 9 9 9 82

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 207 ICSA 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.

  • u no fleet rating — the model's level for unrated skippers is the baseline.

Division A  9 boats · 10 races

FinSkipperSchool Races Rating
before
Perf.
rating
Δ Percentile
before → perf.
Surprise
(bits)
P(this good
or better)
Avg finish
actual / exp.
1John Joseph '12Maine Maritime Academy10/101.063.13+2.0776th → 99th12.4<1%1.8 / 4.6
2Viktor Wettergren '14Tufts University10/101.382.61+1.2387th → 99th5.56%2.3 / 4.2
3William Williams '12U. S. Coast Guard Academy Bears 110/101.58u1.79+0.2291st → 96th0.244%3.5 / 3.8
4Alexander Rudkin '14Roger Williams University10/101.151.34+0.1979th → 87th0.256%4.6 / 4.5
5Graham Philpot '12Massachusetts Maritime Academy10/100.830.98+0.1567th → 73rd0.162%5.4 / 5.0
6Terry Clarke '13University of New Hampshire10/10-0.110.98+1.0911th → 73rd5.327%5.7 / 6.4
7Olin Nelson '13Northeastern University10/10-0.180.40+0.5810th → 42nd1.446%6.5 / 6.6
8Joshua Revkin '13Williams College10/100.170.36+0.1922nd → 41st0.280%7.1 / 6.1
9Benjamin Arocho '14U. S. Coast Guard Academy Bears 210/101.58u-1.32−2.9091st → 1st44.1>99%8.2 / 3.8

Conditions — 04/07/2012 (8am–6pm)

☀️Clear sky
Humidity 37%  ·  Pressure 1014.6 hPa

Temperature

50°F
↑ 55°F   ↓ 38°F
Feels like 42°F

Wind

● from   ▲ toward
7.9 kn
avg  ·  max 9.6 kn
Gusts to 24.3 kn
From NNW (332°)

Sky & Precipitation

Cloud cover49% Sunshine9.0 hrs Humidity37% Pressure1014.6 hPa

What this breeze does at Coast Guard — from fleet racing

Breeze: NW about 10 kn (weather reanalysis in the scorer’s units)
In fleet races at Coast Guard in this breeze: a typical day (+0.01)
Nothing in this breeze favours either side in fleet racing here: results follow the ratings about as 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 ±0.01 means a rating gap counts about 1% 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 Coast Guard by wind direction (angle) and speed (rings), fitted surface; dots are labelled regatta-days, ★ this regatta (57 labelled fleet-race days at Coast Guard).

From the notes

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

All notes →