What is the best way to prevent striking a swimmer with a moving boat propeller?

Turning the engine off when a swimmer is re-boarding is the best way to prevent striking a swimmer with a moving boat propeller because it eliminates the risk of the propeller turning while individuals are in or near the water. When the engine is running, the potential for accidental injury increases significantly, especially if the swimmer is close to the boat and may accidentally come into contact with the propeller.

By ensuring that the engine is off, boat operators prioritize the safety of swimmers and create a controlled environment for reboarding. This practice is crucial since propellers can cause serious injuries or fatalities, and being vigilant about engine status when swimmers are present significantly enhances safety measures. Prior to starting the engine, always checking for swimmers is essential, but turning it off during close proximity to swimmers is the most effective precaution.