Vessel operators may not hear sound signals or voices if the engine is not adequately muffled.
- All vessel engines must have a factory-installed muffler or exhaust water manifold for noise reduction, or another effective muffling system.
- You are prohibited from:
- Using cutouts
- Removing mufflers or muffler baffles
- Cutting or punching holes in mufflers
- Modifying the original muffler or muffling system in a way that increases the noise level