RedactedNarrative: On Saturday August 08, 2020 Victim 1 was operating his vessel on Watts Bar Lake. He had just launched his vessel. At approximately 17:40 Victim 1 attempted to start his vessel. He stated it at that time it blew up. Victim 1 ejected the vessel voluntarily and swam to shore safely. Victim 1 did not sustain injuries. Alcohol was not involved. It remains undetermined what caused the fire. Investigation is closed.