RedactedNarrative: On 05/15/18 at approximately 1400 hours, V1, (1982, 30 feet in length SeaRay cabin vessel bearing registration FL 6987 HW) became engulfed in flames while moored. The inboard motor of V1 exploded when the operator went to start it after raising the rear hatch to vent fumes.  The explosion knocked the operator back towards the rear of V1 but did not cause injury.  The operator of V1 attempted to distinguish fire by using his fire extinguisher but was unable to do so.  Hillsborough County Fire Rescue responded and extinguished the fire.  The Hillsborough County Fire Investigator also responded and conducted a fire investigation. (report attached) The approximate value of V1 according to the registered owner is approximately $35,000.00