RedactedNarrative: SUBJECT WAS OPERATING BOAT ON THE ST CROIX RIVER NOTICED THE ENGINE TEMPERATURE GOING UP THEN A FIRE STARTED IN THE ENGINE COMPARTMENT WHEN LAW ENFORCEMENT OFFICER ARRIVED SUBJECT HAD USED TWO FIRE EXTINGUISHERS AND FIRE WAS CONTINUING, OFFICER GAVE SUBJECT A 3RD FIRE EXTINGUISHER THAT WAS ABLE TO PUT FIRE OUT.