RedactedNarrative: Vessel 1 was leaving the channel at the mouth of the Portage River entering Lake Erie. As the operator started to throttle up, the boat hesitated. Then there was an explosion. Passenger 3 was sitting on the motor cover when the explosion occurred.  When passenger 3 landed on the boat he broke his ankle. All three passengers then entered the water to avoid burning vessel. All three passengers were picked up out of the water by good Samaritan. The vessel then sank.