RedactedNarrative: UNIT 1 LAUNCHED AT THE LAKE SHANGRILA BOAT LAUNCH ON 121ST STREET, WEST OF 213TH AVENUE.  UNIT 1 TURNED AROUND NEAR THE LAUNCH AND ATTEMPTED TO PROCEED INTO THE LAKE.  UNIT 1 TURNED AND STRUCK UNIT 2'S OUTBOARD MOTOR AND THE DOCK UNIT 2 WAS TIED TO.  
  
  THE MOTOR ON UNIT 2 SUSTAINED GAUGE / SCRAPE MARKS.  THE DOCK SUSTAINED DAMAGE TO THE FAR WESTERN PART OF IT AND PART OF IT SUBMERGED INTO THE WATER.  UNIT 1 SUSTAINED A LARGE SLIT IN THE PORT SIDE PONTOON AND BEGAN TAKING ON WATER.  UNIT 1 WAS THEN REMOVED FROM THE WATER A SHORT TIME LATER.  UNIT 2 REMAINED AT IT'S DOCK.  THE OPERATOR OF UNIT 1 DID NOT NOTIFY LAW ENFORCEMENT OF THE CRASH, AND WAS LOCATED LATER DURING MY INVESTIGATION. THE OPERATOR OF UNIT 1 WILL BE CITED FOR FAILURE TO REPORT BOAT ACCIDENT.  THE OPERATOR OF UNIT 1 WAS ADVISED TO COMPLETE THE WI DNR BOAT OPERATOR ACCIDENT REPORT.  THE OWNER OF UNIT 2 ESTIMATED THE DAMAGE TO THE MOTOR AT $3000 - $5000 AND THE DAMAGE TO HIS DOCK AT $1000.