RedactedNarrative: On 06/21/18, while on marine patrol of Middle River, at approximately 2130 hours, DNR contacted me to respond to a "MAYDAY" call for a vessel on fire, north of Hart-Miller Island. I activated my vessels emergency lights and immediately responded to the coordinates, 3916'40.8"N 7620'43.0"W, provided by DNR. As I approached the scene, I observed a 41' Egg Harbor cabin cruiser vessel with heavy smoke emanating from the stern area, on the bow, there were six people, three adults, and three children. 
  
  I positioned my vessel alongside the burning vessel, the adults and I transferred the children over to my vessel and then I assisted the adults with the transfer of an elderly male to my vessel. Once all six passengers were on board, I positioned the patrol vessel at a safe distance away and waited for additional fire rescue vessels to arrive on scene. I inquired if anyone was injured and all were uninjured. Approximately, fifteen minutes later a Baltimore County Fireboat arrived and began to extinguish the fire. As we watched the scene, I interviewed the Captain he stated that he was operating the vessel normally when his stepson advised him that he smelled smoke. 
  Operator stopped the vessel and turned off the engine; the stepson went to the engine room and observed open flames coming from the port motor. The stepson said he immediately attempted to extinguish the flames with a fire extinguisher but the attempts were unsuccessful. Seeing that he would be unable to put out the fire, he closed the engine room hatch and began to prepare the passengers to abandon the vessel. Subject had everyone don life preservers and directed Operator to call "MAYDAY". Subject then had Operator leave the bridge and join everyone else on the bow of the vessel. They inflated the emergency life raft and struck flares. Subject stated that he went back up to the bridge to continue calling for assistance but was overcome by smoke. As additional rescue and tow vessels arrived, I met with USCG who had also just arrived and provided them with a synopsis of events as well as identification of the passengers.
   I then spoke with subject2 who advised that the fire was sufficiently extinguished thereby enabling him to tow the vessel back to his yard. I informed Operator of this information and advised him that I would transport them back to their residence. At approximately 2300 hours I dropped off Operator and his family at their pier and gather information for a report. At approximately 2340, I contacted subject2 who advised that the vessel was now at his marina and land-based Baltimore County fire units were applying additional water to hot spots in the engine room.  
  
  