RedactedNarrative: On Monday, December 28, 2015, at approximately 13:27 I was dispatched where a docked pontoon boat had caught fire.  Upon arrival, Wilson County Emergency Management Agency had extinguished an engine fire on a 1989 Landau pontoon boat .  The owner and operator was attempting to bring his single boat dock back to shore after it had broke loose by powering up his pontoon boat and driving the boat tied to the dock back to the bank.  When Operator1 started the boat, the boat backfired causing the motor to catch fire.  Operator1 exited the boat and called 911.  It appears that the motor was the only loss due to the fire.