How much fuel can a clean hull actually save?

Fuel is one of the largest ongoing costs of owning a boat, and the hull has a direct, physical effect on it. Every barnacle and patch of slime adds friction the engine has to overcome — and that friction shows up at the fuel dock.

Why fouling burns fuel

Water is heavy, and a boat spends most of its energy pushing through it. A smooth hull slips through cleanly. A fouled one drags a rough, sticky surface that the engine has to work harder to move — burning more fuel to hit the same speed, or losing speed at the same throttle. Industry studies and everyday owner experience both point the same direction: even light slime measurably raises consumption, and the heavier the growth, the steeper the penalty.

Where the savings show up

• At the same RPM, a clean boat runs faster and gets on plane more easily.
• At the same speed, it sips less fuel and the engine runs cooler and calmer.
• Over a season, those small per-trip savings add up to a real number.

The compounding win

Fuel is only the most visible benefit. A clean, cool-running engine works less hard, and well-maintained running gear lasts longer. A regular cleaning schedule pays you back in fuel, in performance, and in the longevity of expensive machinery — all at once.

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