Ventilation System Requirements
- All vessels with gasoline-powered engines operating on federally controlled waters, and constructed in a way that would entrap fumes, must have at least two ventilation ducts fitted with cowls to remove the fumes. On Iowa state waters, every powerboat, except open boats, using any liquid of a volatile nature as fuel, must be provided with the means for properly and efficiently ventilating the bilges of the engines and fuel tank compartments so as to remove any explosive or flammable gases.
- If your vessel is equipped with a power ventilation system, turn it on for at least four minutes in either of these situations:
- After fueling
- Before starting the engine
- If your vessel is not equipped with a power ventilation system (for example, a personal watercraft), open the engine compartment and sniff for gasoline fumes before starting the engine.
Vessels built after July 31, 1980, which contain power exhaust blowers in gasoline engine compartments, must have the warning sticker placed near the instrument panel.