What will prevent the ignition of gasoline fumes for a boat?

To prevent the ignition of gasoline fumes on a boat, ensure proper ventilation to dissipate any accumulated vapors, particularly in enclosed spaces. Use explosion-proof electrical equipment and avoid open flames or sparks near fuel sources. Regularly inspect fuel systems for leaks and maintain equipment to minimize the risk of ignition. Additionally, storing fuel in appropriate containers and following safe fueling practices can further reduce hazards.