What should you do if your boat motor catches fire?

If your boat motor catches fire, immediately shut off the fuel supply to prevent further fueling of the fire. Use a fire extinguisher rated for marine use to attempt to put out the fire, aiming at the base of the flames. If the fire is uncontrollable, evacuate everyone from the boat, ensure they wear life jackets, and move to a safe distance. Call for emergency assistance and do not re-enter the boat until it has been deemed safe.