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

When filling the fuel tank of a gasoline-powered boat, always do so in a well-ventilated area to prevent the buildup of flammable vapors. Turn off all engines and electrical equipment, and avoid smoking or using open flames nearby. Use a proper fuel nozzle to minimize spills and ground yourself to prevent static electricity discharge. Additionally, keep a fire extinguisher readily accessible in case of emergencies.