ARM 12.11.305. VENTILATION SYSTEMS

(1) Every motorboat or vessel on the waters of this state shall meet the following ventilation system requirements: (a) at least two ventilation ducts fitted with cowls or their equivalent for the purpose of properly and efficiently ventilating the bilges of every engine and fuel tank compartment of boats decked-over using gasoline as fuel and other fuels having a flashpoint of 110 E F or less; (b) at least one exhaust duct installed so as to extend to the lower portion of the bilge, and at least one intake duct installed so as to extend to a point at least midway to the bilge or at least below the level of the carburetor air intake.