Propeller Basics - Ventilation
Ventilation

Ventilation occurs when surface air or exhaust gasses are pulled into the boat propeller blades.

When this happens the engine RPMs increase rapidly and the boat loses speed.

Ventilation can be caused by tight cornering, a motor mounted too high on the transom, or by over-trimming the engine.

Propeller Help Guide

Propeller Help Guide

Propeller Help Guide

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