RedactedNarrative: On August 1, 2017 at approximately 16:30 hrs, A 2001 Sea-Doo personal watercraft just south of the entrance to the Mandeville harbor began to run erratically and stalled. Operator then attempted to lift the front hatch, when an explosion occurred, blowing the hatch off of the Sea Doo and throwing Operator into the water. The watercraft then burned and partially sank. Operator was then rescued by a passing sailboat and transported to shore at the Mandeville harbor. There were additional containers of gasoline(without caps) stored in the front compartment of the Sea Doo. This could have spilled, allowing gasoline to accumulate in the vessel's front storage compartment and engine compartment and allowed vapors to build up and ignite from heat or a spark produced by the engine. The vessel's onboard fuel tank had just been filled, possibly being overfilled and also possible causing a fuel spill. Operator was wearing a pfd at the time of the incident and there was no evidence that alcohol or drug use caused or contributed to this incident.