RedactedNarrative: Vessel #1 was tied to dock and unoccupied when the Onset Fire Department arrived to it being completely in flames and the vessel next to it vessel #2 was smoldering but not on fire.  The fires were extinguished.  Vessel #1 began to flood and sink due to the water used to extinguish it and it was removed from the water and brought to the Police Department impound facility.  
  
  Cause of fire unknown according to Fire Department but most likely worn electrical connections on the shore ties.  The components involved were destroyed and no evidentiary value except 1 plug connection which revealed corrosion.  He wasn't able to determine if it was in that condition before the fire or did it occur on account of the fire fighting efforts.  Official cause of fire is undermined.