It's the Law: Required Equipment
Ventilation Systems
The purpose of ventilation systems is to avoid explosions
by removing flammable gases. Properly installed ventilation
systems greatly reduce
the chance of a lifethreatening
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 both after
fueling and before starting your 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.
Backfire Flame Arrestors
Backfire flame arrestors are designed to prevent the ignition
of gasoline vapors in case the engine backfires.
- All powerboats (except outboards) that are fueled with
gasoline must have an approved backfire flame arrestor
on each carburetor.
- Backfire flame arrestors must be:
- In good and serviceable condition and …
- U.S. Coast Guard–approved (must comply with SAE
J-1928 or UL 1111 standards).
- Periodically clean the flame arrestor and check for damage.
Mufflers
All vessel engines must be equipped with an effective muffling
device or underwater exhaust. Vessel operators may not hear
sound signals or voices if the engine is not adequately muffled.
- The noise level of any motorized vessel measured at a
distance of 50 feet or more from the vessel must not
exceed 82 decibels in normal operating environments.
- The use of cutouts is prohibited.
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