RedactedNarrative: Vessel 1, a 1995 Chapparal occupied by 11 people was leaving the no wake zone when a mechanical failure inside the motor compartment began billowing smoke from the engine hatch. The operator stated when he observed the smoke coming out of the engine hatch, so he used 2 fire extinguishers to extinguish what he believed to be a fire. I asked him what mechanical failure had caused the smoke and he explained the serpentine belt had rubbed on the ventilation hose, causing it to billow smoke. OPERATOR then loaded his vessel onto the trailer and removed it from the water. No injuries were reported at the time of this incident, medical was denied by all occupants.