RedactedNarrative: At approximately 1910 hours, I was on water patrol in Miami Dade County. Dispatch advised of a vessel fire on the Miami River that was already extinguished by City of Miami Fire Department. 
  
  At approximately 2028 hours I arrived on scene to Brisas Del Rio Marina located at 1583 NW 24th Ave. I identified "My Friendship" as the vessel that had been on fire with DO number 969872. I made contact with City of Miami Fire Rescue, they advised me that when they arrived on scene the vessel was secured to the dock with no shore power connected to the vessel. The vessel was locked although the starboard motor was running. When they entered to extinguish the fire they later realized that the key was not in the ignition. There were no people on board at the time and the fire was completely contained inside the vessel. Lt. of City of Miami Fire Department was conducting an arson investigation while we were at the scene. 
  
  
  Subject identified himself as the Director of the company that owns the vessel. Subject advised the vessel was not insured. Lt. was unable to determine the cause of the fire while we were at the scene, he left me his contact information to call him in a couple of days. The fire completely burned the main level of the vessel. 
  
  City of Miami Fire Department Engine 7 advised that the scene was safe and the fire completely extinguished. City of Miami Fire Alarm number 14-45294. 
  
  On June 24, 2014, I contacted Lt. to ask what he believed caused the fire, he stated that all signs point to an electrical shortage somewhere on the vessel.