Inboard gasoline boats ventilation system
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No person may sell, resell or offer for sale any motorboat for use on the waters of the state if the motorboat has been so modified that it cannot be operated in such a manner that it will comply with the noise level requirements under par. No person may operate a motorboat powered by an engine on the waters of this state in such a manner as to exceed a noise level of 86 measured on an “A" weighted decibel scale. The engine of every motorboat propelled by an internal combustion engine and used on the waters of this state shall be equipped and maintained with a muffler, underwater exhaust system or other noise suppression device. (2) Muffler requirement and noise level standards. If such boat is properly equipped at the time of rental for conditions then existing, the responsibility of the owner under this section is met, notwithstanding a subsequent change in the number of passengers or a change in time from daylight to dark. No owner of a boat shall rent such boat to any other person for use upon the waters of this state unless such boat is equipped at the time of rental as required by this section and the rules of the department promulgated under this section. No person shall operate any boat on the waters of this state unless such boat is equipped as required by this section and the rules of the department promulgated under this section.