RedactedNarrative: OPERATOR ADVISED HE BACKED V1 INTO THE LAKE, UNHOOKED FROM THE TRAILER AND WAS WORKING ON THE MOTOR WHEN THE ENGINE SPARKED CAUSING THE ENGINE COMPARTMENT TO CATCH FIRE AND EXPLODE. OPERATOR FURTHER ADVISED HE JUMPED FROM V1 AND GRABBED FIRE EXTINGUISHERS FROM OTHER BOATS BUT WAS UNABLE TO PUT OUT THE FIRE.