It's the Law: Required Equipment

Ventilation Systems

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, must have at least two ventilation ducts fitted with cowls to remove the fumes.
• If your vessel is equipped with a power ventilation system, turn it on for at least four minutes after fueling and before starting your engine.

Backfire Flame Arrestors

Because vessel engines may backfire, all powerboats (except outboards) that are fueled with gasoline must have a U.S. Coast Guard–approved (comply with SAE J‑1928 or UL 1111 standards) backfire flame arrestor on each carburetor.

Mufflers

Vessel operators may not hear sound signals or voices if the engine is not adequately muffled.

• The exhaust of every internal combustion engine on any vessel must be muffled effectively. That is, the engine’s exhaust must be muffled or suppressed at all times so as not to create excessive noise.
• The use of cutouts is prohibited, except on racing boats competing in approved marine events.