108. If your propeller is racing in rough weather, which action should you take?

Decreasing engine speed is correct; it immediately reduces propeller and engine overspeed, preventing mechanical damage when the propeller races in rough seas. Propeller racing occurs when the propeller lifts from the water, reducing load and allowing the engine to overspeed, which can damage marine engines and reduction gears. Reducing engine speed limits RPM and maintains maneuverability, unlike ignoring the condition, increasing engine speed, or stopping the engine.