VESSEL 1 LEFT MURRELLS INLET LAUNCH SITE AT APPROXIMATELY 11:30. AFTER THE VESSEL PASSED THE CRAZY SISTERS MARINA THERE WAS AN EXPLOSION. THE OPERATOR THREW HIS GRANDSON OUT OF THE VESSEL THEN HE JUMPED IN TO THE WATER WITH HIS GRANDSON. THE OPERATOR STATED THAT THE VESSEL'S FUEL TANK HAD BEEN PUMPED OUT RECENTLY. THE 8 YEAR OLD VICTIM WAS TAKEN TO WACCAMAW COMMUNITY HOSPITAL WHERE THE INVESTIGATING OFFICER TALKED TO HIM. THE OFFICER WITNESSED BOTH OF HIS LEGS WRAPPED AND THE HAIR ON HIS HEAD WAS BURNED. THE ON CALL DOCTOR TOLD THE INVESTIGATING OFFICER THE VICTIM WOULD BE TRANSPORTED TO THE MUSC BURN CENTER IN CHARLESTON. THE OFFICER INTERVIEWED THE OPERATOR AT WACCAMAW HOSPITAL AND HE DID NOT APPEAR TO BE UNDER THE INFLUENCE OR ALCOHOL OR DRUGS. HE WAS OBVIOUSLY UPSET BUT COOPERATED FULLY. THE VESSEL HAD SOME FIBERGLASS DAMAGE AND WIRING DAMAGE DONE FROM THE FIRE AND 1500.00 IS ONLY AND ESTIMATE.