Quick answer: According to World Sailing Race Management Policy, races must not be started in average wind speeds exceeding 25 knots, measured over a 5-minute period. Once a race has started, there is no automatic wind threshold for abandonment — the Race Officer judges based on safety and fair racing.
You're on the committee boat. The forecast said 15 knots. What's out there is closer to 28 — gusting. The fleet is rigged, ready, and watching you.
So: do you start, postpone, or abandon?
This is one of the most important calls a Race Officer makes. And it's not just about following a number — it's about understanding what that number means in context.
The Official Wind Limit: What World Sailing Says
Under World Sailing Race Management Policy, races will not be started in an average wind speed exceeding 25 knots (measured over a 5-minute period).
For specific classes, the thresholds differ:
- iQFOiL and Formula Kite: 30 knots maximum
- 49er / 49er FX: typically 2–5 knots lower than the standard limit in heavy seas or gusty conditions
- Youth and junior fleets: many national authorities set stricter local limits — check your Sailing Instructions
New to race management? The "25-knot limit" applies to the start. Once a race is underway, there's no automatic trigger to abandon — the decision becomes a judgment call based on safety and fair racing.
It's Not Just the Number — It's the Context
Experienced Race Officers know that 25 knots in flat water with a steady breeze is a completely different race from 20 knots with 3-meter swells and wild gusts. The rule gives you a ceiling, not a manual.
Ask yourself:
- Is the wind consistent, or are there gusts spiking 10+ knots above the average?
- What's the sea state? Steep chop in shifty breeze is harder to manage than a steady offshore.
- What class is racing? A 470 fleet handles very differently from a Laser Radial fleet or an offshore keelboat.
- Are all boats in the fleet capable of handling these conditions safely?
- Do you have the resources to run a safe course — patrol boats, mark positions, finish boat?
If you're uncertain on any of these, postpone first. You can always start late. You can't un-sink a boat.
How to Measure Wind Speed Correctly Before the Start
This is where many race committees cut corners — and it costs them. A single reading from a fixed anemometer on the committee boat is not enough. The mast height, boat movement, and local topography all affect readings.
Best practice for pre-start wind monitoring:
- Take multiple readings at 1-minute intervals starting 30–45 minutes before the scheduled start
- Move the boat to different positions on the start line to check for gradient differences between pin end and signal boat
- Use a handheld anemometer at arm's length or on a monopod raised above deck level — away from the boat's windbreak
- Calculate the 5-minute average — a single peak gust doesn't trigger postponement, but a sustained average does
One practical note: a 360° propeller-style anemometer works better on a committee boat than a traditional vane type, because you don't need to point it into the wind to get a reading. On a moving boat in shifting breeze, that matters. We use the Windie 360 for this — raise it on a monopod above deck height, read it, log it.
The Decision Tree: Start, Postpone, or Abandon?
Before the start:
| Situation | Action |
|---|---|
| Wind below limit, steady | Start as planned |
| Wind near limit, increasing | Postpone — wait 15–20 min, reassess |
| Wind above 25 knots (average) | AP flag — postpone |
| Wind above limit + deteriorating forecast | Consider abandoning the day |
| Wind wildly gusty, even if average is low | Postpone until it steadies |
After the start:
The race committee cannot abandon a race simply because wind exceeds the pre-start limit once racing has begun. The standard shifts to: Can we safely manage racing?
Abandon (flag N over H, or flag N with three sounds) when:
- Conditions have become unsafe for competitors
- The course has been blown out (wind shift makes the set course unfair)
- Mark boats can no longer hold position
What Happens to Races You Abandon?
Under Rule 32.1, if you abandon after a race has started, the race does not count. It can be re-sailed later in the series — but only if the Sailing Instructions allow for it and there's time in the schedule.
This is why starting a race in marginal conditions that you end up abandoning mid-race is expensive. Better to postpone early and start clean.
One More Thing: Document Everything
Whatever call you make, write it down. Time of readings, average wind speed, sea state observations, the flag sequence used, and the reasoning behind the decision. If a protest is filed, your notes are your record.
A good Race Officer finishes the day knowing that every decision was defensible — not just by feel, but by data.
Final Thought
Wind management is where a lot of PROs earn their reputation — or lose it. The sailors remember the races that got abandoned unnecessarily almost as much as the ones that should have been called off sooner. Neither is a good look.
Take your time with the readings. Make the call early if you need to. And write everything down.
Frequently Asked Questions
What wind speed is too high to start a sailing race?
World Sailing Race Management Policy sets the maximum wind speed for starting a race at 25 knots, averaged over a 5-minute period. Some classes have different limits: iQFOiL and Formula Kite allow up to 30 knots; 49er and 49er FX fleets typically use a lower limit in heavy seas.
What happens if wind increases after a race has started?
Once a race is underway, there is no automatic wind threshold that requires abandonment. The Race Officer must judge whether conditions have become unsafe or whether the course is still fair. Abandonment is signaled with flag N (with three sound signals), or flag N over H.
What is the difference between postponing and abandoning a sailing race?
Postponement (AP flag) delays the start — the race has not yet begun and will be started later. Abandonment (flag N) cancels a race that has already started; under Rule 32.1, an abandoned race does not count in the series and may be re-sailed if the Sailing Instructions allow.
How should a Race Officer measure wind speed before a race?
Best practice is to take readings every minute for 30–45 minutes before the scheduled start, using a handheld anemometer held at arm's length or raised on a monopod above deck. Readings should be taken from multiple positions along the start line and averaged over 5 minutes.
What flag does a Race Officer use to postpone a race due to wind?
The Answering Pennant (AP flag) signals a postponement. It is flown with two sound signals. When conditions allow a start, the AP flag is lowered with one long sound signal, and the sequence begins.
