RedactedNarrative: Vessel 1 was traveling (on plane) in a south/southeast direction on Grass Lake, just east of Blarney Island.  Vessel 2 was traveling east on Grass Lake, southeast of Blarney Island at idle speed, near the last set of red and green navigation buoys.  
  
  Vessel 1''s starboard side bow impacted the port side of vessel 2 near the back half of the boat, causing serious injuries to the occupant seated directly inside of the port side stern/gunwhale.  The occupant was transported  to shore (Chain O'' Lakes State Park) by Vessel 2, then by ambulance to the hospital.  Vessel 1 drove to the Port O'' Blarney.  
  
  Investigation pending.