RedactedNarrative: Operator stated he the water was very rough which is why he decreased his speed from 25 mph to 15 mph.  Operator stated that he was position in the operator’s seat.  Operator stated he smelled what he described as an “electrical fire smell” and the engine stopped.  
  
  Operator stated he went to the back of the vessel and lifted the compartment where the motor, batteries, and fuel are located; and flames came out of the compartment.  
  
  Operator stated he used his fire extinguisher, but it would not put out the flames.  At this point, Operator stated he called a friend who was in another vessel on the water; and asked him to come and pick them up.   The operator and three passengers put on lifejackets and jumped into the water.  All four were picked up by the friend.  Fire Department responded to the incident and were able to put out the flames.  Fire Department began towing the vessel back to the boat launch, but the vessel sunk.  All four occupants of the Vessel were safe and not injured and did not need medical treatment.