EXHAUST MUFFLERS

Except in case of a motorboat competing in a sanctioned race or regatta, it is unlawful to use a vessel propelled in whole or in part by gas, gasoline, or naphtha unless the vessel is provided with a stock factory muffler underwater or other device capable of adequately muffling the sounds of the exhaust of the engine. The phrase “adequate muffling” means that the motor’s exhaust at all times is so muffled or suppressed as not to create excessive noise.

No person shall operate a vessel upon waters of this state under any condition or in any manner that the vessel emits a sound level in excess of 86 decibels on “A” weighted scale when measured from a distance of 50 feet or more from the vessel. The operator of such vessel may be ordered off the water upon failure to submit to sound level testing procedures.