RedactedNarrative: Operator 1 was starting vessel 1 in the no wake are of the marina bay close to camp area F lot 615 at Atwood Lake Park. 
  
  Vessel 1 had an accumulation of fuel and fuel vapor in the bilge which was ignited causing an explosion which ejected operator 1 from the vessel into Atwood Lake.
  
  Operator 1 was not wearing any personal flotation device at the time of the accident and was helped to shore by several people in the area that heard or saw the incident. Operator 1 sustained a broken back and various abrasions and contusions on his body.