The Boater's Guide of Arizona: A Handbook of Boating Laws and Responsibilities
The Official Boating Handbook of the Arizona Game and Fish Department - Web Version
Table of Contents
The purpose of ventilation systems is to avoid explosions by removing flammable gases. Properly installed ventilation systems greatly reduce the chance of a life-threatening explosion.
All gasoline-powered vessels, constructed in a way that would entrap fumes, be properly and efficiently vented to remove the fumes. It is recommended that at least one intake duct extend from a point midway to the bilge or below the level of the carburetor air intake, and at least one exhaust duct extend from the open atmosphere to the lower bilge.
If your vessel is equipped with a power ventilation system, turn it on for at least six 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 PWC), open the engine compartment and sniff for gasoline fumes before starting the engine.
Regularly check the ventilation ducts for obstructions, such as birds’ nests. Make sure you can feel air coming out of the cowl when the ventilation system is turned on.