RedactedNarrative: When law enforcement arrived they found the vessel completely involved with fire and drifting. 
  
  They started fire fighting efforts and had the fire knocked down upon Kingston FD. arrival.   
  
  After speaking to the owner who was still at the boat launch (SPIT PARK) he advised that they had just put the boat in the water and were starting it when they heard a loud pop and the fire started. 
  
   The local Fire Dept. was on scene but due to the damage from the fire a cause could not be found.  The owner of the vessel advised they had filled the boat with gas at a local gas station and trailered it to the ramp where they launched it and secured it at the dock. 
  
  When the fire started the only person onboard was the owner. the fire melted the dock lines and the boat was drifting toward some moored barges when we arrived. We knocked the fire and I towed the vessel to shallow water in case it sank. We were able to get it back to the ramp where we contacted a tow company with a flatbed and they removed it