← Jon Swain · Visualisations

Calculator

How fast was that piece?

Compare crews in different boats and grades on one scale. You can also convert a time from one championship event to another.

Same boat, every grade

Same grade, every boat

Equivalent time –
Speed factors

How much slower is each grade than Premier?

Event history

Medal times year by year

Raw times jump around with the weather. Switch on the adjustment to see each final as it would have been on an average day.

Against the world

Median gold (all years)Fastest NZ gold

Where is NZ closest to world pace?

Gender gap

Grade medianIndividual boat classes

Variability

Which events are consistent, and which swing?

The hollow dot is the raw year-to-year spread of gold times (coefficient of variation). The solid dot is the spread left after removing the day's conditions, which reflects how much winning quality varies. A long bar means conditions are most of the story for that event.

Raw spread (CV of gold time)After removing conditionsGold-to-bronze margin (median)

Close racing

How deep and how close are the finals?

Depth is the gap from gold to 6th place in the A‑final, as a percentage of the winning time. A small gap means a deep field. Closeness is the gold-to-silver margin in seconds.

Depth of field by grade

Gold-to-silver margins

Number of A‑finals by winning margin, 2007–2026.

The closest finals

Conditions

How fast was each race day?

The model's estimate of each race day's speed relative to an average championship day. Positive values mean slower times. Wind is the hourly 10 m reading from the ERA5 reanalysis (Open‑Meteo), averaged over each day's finals.

Lake KarāpiroLake Ruataniwha

Day speed vs wind

Fastest and slowest finals days

Time of day

Times vs expected, by start hour

Lake KarāpiroLake Ruataniwha

Average wind by hour, regatta weeks

Lake KarāpiroLake Ruataniwha

Lanes

Time vs race average, by lane

Lake KarāpiroLake Ruataniwha

Share of gold medals, by lane

Lake KarāpiroLake Ruataniwha
Clubs

GoldSilverBronze

Share of gold medals by region

Home water

Reference

Every event

Method

How the numbers were made