What type of Inboard gasoline boats built after July 31 1980 must have what type of ventilation system?

Inboard gasoline boats built after July 31, 1980, must have a ventilation system designed to remove flammable vapors from the engine compartment. This system must include at least two ventilation ducts, one for intake and one for exhaust, to ensure proper airflow. Additionally, the system should be capable of operating with the engine running and must meet the standards set by the U.S. Coast Guard to enhance safety on the water.