All vessel engines must be equipped with an effective muffling device. Vessel operators may not hear sound signals or voices if the engine is not adequately muffled.
- The noise level of any motorized vessel must not exceed 86 decibels at a distance of 50 feet or more from the vessel.
- The use of cutouts is prohibited.
- It is illegal to modify the muffling system if it results in a noise level greater than the legal limit.