What safety precaution should you take while filling the fuel tank of a gasoline-powered boat?

Keeping engines, motors, and fans turned off while filling the fuel tank is essential for safety. This precaution minimizes the risk of sparks or flames igniting gasoline vapors, which can be highly flammable. Gasoline produces vapors that are heavier than air and can linger near the surface of the boat or in enclosed spaces, creating a significant fire hazard. By ensuring that all ignition sources are off, you drastically reduce the chance of an accident occurring during fueling.

While having a fire extinguisher nearby is also a good safety measure, it shouldn't be relied upon as the primary precaution during fueling. Opening windows for ventilation may help disperse vapors but doesn't eliminate the immediate danger of sparks from ignitions. Filling the tank quickly could lead to spills and increased vapor release, heightening the risk of fire. Therefore, turning off engines and motors is the most effective way to ensure a safe fueling process.