RedactedNarrative: ACCORDING TO V1 OPERATOR, V1 WAS FULLY FUELED AND THEY WERE PREPARING TO GO WATCH THE FIREWORKS ON THE LAKE.  HE STARTED V1 AND WAS WORKING ON GETTING THE STERN LIGHT CONNECTED AND WORKING WHEN THE MOTOR COMPARTMENT EXPLODED, BLOWING THE BACK COVER OFF V1. 
  
  HE ALSO STATED HE WAS "PRETTY SURE" HE TURNED THE BLOWERS ON BUT THIS CANNOT BE CONFIRMED OR DENIED DUE TO THE VESSEL BEING COMPLETELY DESTROYED.  ALL OCCUPANTS WERE ABLE TO DISBOARD WITHOUT INJURY. TWO MEN ON THE NEXT DOCK (DOCK 4); HEARD THE "BOOM" AND RAN OVER AND TRIED TO PUT THE FIRE OUT WITH FIRE EXTINGUISHERS BUT WERE NOT SUCCESSFUL.  THE FIRE QUICKLY SPREAD TO THE DOCK (DOCK 3) AND NEIGHBORING BOATS.  
  
  OF THE 36 SLIPS IN DOCK 3, 29 VESSELS SUFFERED DAMAGE (TOTALED), 6 WERE ABSENT (ON THE LAKE DURING THE FIRE) AND 1 SUFFERED NO APPARENT DAMAGE.  ESTIMATED DAMAGE TO VESSELS IS APPROX. $598,000.  ESTIMATED DAMAGE TO THE DOCK IS $190,000.