BOATsmart! Base de connaissances du Canada 

Pleasure craft are not permitted within 5 nautical miles (9.26 km) of any Canadian shore unless they are fitted with a noise muffling device.  A ‘wet exhaust’, where noise is muffled by cooling water discharged through the exhaust pipe, is not considered a noise muffling device. Operators should check with their local Canadian Coast Guard for any exemptions to this rule.

Boaters should remember that sound travels further on water than on land. Operating continuously in one area disturbs both those on land and on water. Don’t ’buzz’ around in one area, keep loud music to a minimum and respect those on shore, as well as your fellow boaters.