RedactedNarrative: V1 was operating in lake when engine malfunctioned. Machinery failure caused the operator to open engine hatch. While attempting to start the engine, fuel vapors caught fire. Operator was unable to extinguish flames with fire extinguisher. Both occupants jumped into water and swam to shore. V1 drifted towards shore, where it collided with V2 causing it to catch fire.
  
  I spoke with the owner. He stated that he had bought the boat recently and was having a mechanic make repairs on the engine. The mechanic stated that he had gotten the motor running, and took the boat out for a trial run with the owner's son. The mechanic stated that the boat was running, then the motor stalled out near the middle of the lake. He opened the engine hatch to see what the problem was but did not identify any obvious problem. With the engine hatch still open, he attempted to start the engine again. He stated that fuel had spilled out from the top of the carburetor and ignited as soon as he attempted to start the engine. He told the owner’s son to jump in the water and swim away from the boat while he used the fire extinguisher to put out the flames. When the extinguisher ran empty and the flames were still burning, he also jumped in the water. As the boat became engulfed in flames, the mechanic and the son swam to shore.
  
  With both occupants safely to shore, the wind caused the burning boat to drift towards shore. It made contact with another boat, the Wellcraft, on its dry dock, and quickly caused it to catch fire also. The burning boat continued to drift until it became grounded near the shore one house. The Wellcraft became engulfed in flames, causing substantial damage to the floating dry dock it was moored on, as well as the wooden dock it was tied next to.