Learning to Cross the Line at the Exact Moment the Klaxon Goes
There’s something magical about a perfect start.
Not early (that sinking feeling).
Not late (watching everyone disappear up the beat).
But crossing the line at full speed, bang on the klaxon, with the flag just dropping.
On a river like the Thames, that moment is less about brute speed and more about timing, judgement, and calm nerves.
Why the Start Matters So Much on a River
On open water you might claw it back. On a river? Not so much.
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The first beat is often short
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Wind bends and shifts near the banks
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Clear air is gold dust
Get the start wrong and you’re immediately fighting dirty wind and bad water.
Step 1: Know Where the Line Really Is
The start line isn’t imaginary – but it is deceptive.
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Transit the line before the start using two fixed objects (tree + clubhouse, buoy + pontoon, etc.)
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Check it from both directions – rivers distort perspective
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Memorise what “on the line” looks like from the helm position, not standing up
If you’re guessing where the line is, you’re already late.
Step 2: Time Your Run (Every Single Start)
This is the biggest upgrade most club sailors can make.
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Sail from a fixed point to the line on a close-hauled course
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Time how long it takes at normal starting speed
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Do it twice. Boats lie. Average doesn’t.
Now you know whether you’re a 60-second, 45-second, or 30-second sailor.
That number becomes your anchor under pressure.
Step 3: Speed Control Beats Position
Being early is worse than being slightly back.
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Use gentle S-turns to burn time
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Luff briefly rather than stopping dead
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Keep the boat moving – stationary boats can’t accelerate on a river
A slow, controlled approach with options beats charging the line and panicking.
Step 4: Use the Flag, Not Just the Sound
The klaxon is helpful. The flag is truth.
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Sound can echo or lag
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Flags don’t lie
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Train yourself to glance up in the final seconds
The goal: the bow crosses as the flag moves, not after you hear it.
Step 5: Accept That Perfection Is Rare
Even very good sailors don’t nail it every time.
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If you’re late but fast → keep your lane and sail your race
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If you’re early → learn why, don’t beat yourself up
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If it all goes wrong → congratulations, you’re learning
Every start teaches you something, even the ugly ones.
The Real Secret
The best starters aren’t aggressive.
They’re prepared.
They know:
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where the line is
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how long their boat takes
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how to control speed under pressure
Do that, and one day you’ll hear the klaxon, see the flag, and realise you’re already going exactly where you want to be.
That moment?
Worth every bad start that came before it.