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Course Outline

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 effectively muffled by a muffler or underwater exhaust. 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.
  • It is illegal to remove or modify the exhaust or muffler system of a vessel.
  • Vessels involved in a marine event authorized by the Massachusetts Environmental Police are exempt from the requirements above.
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  • Topic 8 of 19
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