Abstract
A 36-year-old Japanese male patient suffered burns (Grade I; 13%, Grade II; 9%) on his face, chest and back when using his private watercraft. The engine suddenly stopped, he suspected the cause might be due to the wet condition of a spark in the engine, igniting a gaslighter to dry up the head of a spark. The gasoline mixed with the air and exploded in the engine chamber. We thought this accident was due to a lack of knowledge by the patient about water craft and the close up structure of the engine chamber in the bottom of a personal watercraft.
