RedactedNarrative: Operator #1 stated to effect:  We had just finished fueling at Hoffman's Marina, when I turned on the blowers.  I went to start the engines and there was a loud explosion that came from the engine compartment.  We both jumped off the boat and onto the dock, when we saw white smoke that turned black coming out of the vents.  I then heard the fire supression system kick on.
  
  Witness #1 stated to the effect:  We had just finished fueling up the boat and were getting ready to leave when we heard an explosion.  I jumped off the bow towards the dock and then you could see black smoke come from the back.
  
  Witness #2 stated to the effect:  The boat had just finished fueling up, when there was an explosion sound that came from the engine compartment.  Both occupants jumped off the boat and you could see white, then black smoke coming out the vents.  Then we tried pushing the boat away from the dock, so the dock would not catch on fire.
  
  Investigation revealed:  Vessel #1 was secured to Hoffman's Marina Fuel Dock, facing east, with both occupants on board.  It should be noted that all precautionary measures were taken prior to fueling.  Upon completion of the fueling, operator #1 attempted to start the port engine.  While starting the port engine, there was an electrical spark, mixed with remaining gas fumes, that created a small explosion within the engine compartment.  At this time, both occupants were able to exit the vessel to the fuel dock without any injuries.  White and black smoke was observed coming from within the engine compartment.  HALON supression system was activated.  Melted wires were observed on the side of the engine block.  Nothing of a suspicious nature was observed at the scene.  No signs of fire elsewhere on the vessel.
  
  USCG Manasquan Station arrived on scene and towed the vessel from the fuel dock.  Brielle Police and Fire Departments arrived on scene to assist.  TowBoat US also arrived on scene and transported vessel to Deep Creek Cove Marina.
  