RedactedNarrative: Vessel 1 docked at the Harbour Towne marina to obtain fuel. After fueling, vessel operator/owner paid for the fuel then returned to vessel 1. A flash fire/explosion occurred when Operator1 attempted to start his twin outboard engines. The force of the explosion forced the bilge hatch he stood on to eject Operator1 up in the air. Operator1 struck the hard vessel top with the top of his head causing a scalp laceration. Vessel 1 passenger was standing next to Operator1 at the time of the explosion. Occupant suffered first degree burns to his feet. Occupant jumped overboard after the explosion but sustained no further injury beyond the burned feet. Three additional passengers were on board at the time of the explosion. The additional passengers did not sustain any injuries. Operator1 was transported to Memorial Regional hospital by Broward Sheriffs Of Fire Rescue personnel. The fire rescue run number is FDN150708003489. Operator1 required twenty staples to close the scalp laceration. Operator1 was later released. Occupant was transported to Memorial Regional hospital by his father. Occupant was also later released. 
   
  Father was standing next to vessel 1 on the marina dock at the time of the explosion. Another person was not injured. Vessel 1 sustained hull damage. Several panels were separated from the hull due to the expanding gases from the flash fire. The fire immediately extinguished itself after the explosion. Broward Sheriffs Office Fire Captain noted that the fuel exhaust hose was detached. The detached hose would cause fuel fumes to accumulate in the hull and bilge area of vessel 1. The vessel batteries and stereo speakers are located underneath the bilge hatch that ejected Operator1. I also noted that the fuel exhaust hose was detached. Operator1 informed me that he did not inspect the fuel exhaust hose prior to fueling vessel 1. Operator1 informed me that the marina gas pump nozzle was reeled in and not attached to vessel 1 at the time of the explosion. The investigation revealed the flash explosion was caused by unvented fuel fumes. Operator1 also stated that vessel 1 was not insured. Operator1 informed me that he rents a slip at Harbour Towne Marina. Harbour Towne Marina personnel secured vessel 1 for Operator1. The explosion was witnessed by Harbour Town Marina store/gas attendant. She corroborated Operator1's account of the incident. 
  
  
  OCCUPANT SUSTAINED FIRST DEGREE BURNS TO HIS FEET CAUSED BY A FUEL VAPOR EXPLOSION. ; Operator SUBJECT SUSTAINED A HEAD LACERATION REQUIRING TWENTY STAPLES. SUBJECT COMPLAINED OF NECK PAIN. THE INJURIES WERE CAUSED WHEN A FUEL VAPOR EXPLOSION LAUNCHED THE SUBJECT UP INTO THE HARD VESSEL TOP.