One thing I like about sailing is going out in a nice white hulled boat, gleaming on the water. The reason it's like that is because we have spent ages cleaning it. With boats like the RS Toura, it is simply a case of using the jet washer and a bit of elbow grease, unlike others who are rubbing down and varnishing.
Here are the main advantages of keeping a dinghy hull clean in racing:
⚡ 1. Reduced Drag = More Speed
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Algae, slime, and barnacle-like growths create friction between the hull and the water.
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A clean, polished hull glides through the water more easily, which means the boat is faster in all conditions.
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On rivers (like the Thames), even a light slime layer can knock noticeable speed off your boat, especially in light winds.
⛵ 2. Better Acceleration
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Coming out of a tack or gybe, or starting from the line, a clean hull accelerates more quickly.
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That extra “zip” can make the difference between holding your lane or being rolled by another boat.
🌊 3. Improved Manoeuvrability
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With less drag, the boat responds more quickly to the helm.
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This matters when making tight mark roundings or quick course adjustments in gusty conditions.
🏆 4. Competitive Edge
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In one-design dinghy racing (like RS Touras, Merlins, Phantoms, etc.), all boats are theoretically equal.
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The difference often comes down to small margins — a dirty hull can easily add 30–60 seconds over a race, which could cost several places.
🧽 5. Less Wear and Tear
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Slime and dirt hold water against the gelcoat, which can encourage osmosis and staining.
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Regular cleaning helps protect the hull long-term, keeping it smoother and faster season after season.
Practical Tips for Racers
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Weekly wipe-down if your dinghy lives afloat — even a quick sponge under the waterline makes a difference.
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Polish the hull occasionally with a light marine polish to keep it smooth.
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Check centreboard and rudder too — they’re just as important for drag reduction.
👉 Bottom line: A clean hull = a fast boat. It’s the cheapest performance upgrade you’ll ever get!
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