RedactedNarrative: Unit 2 and passengers stated they were adrift without the engine running when unit 1 came from the southwesterly direction and the right side of unit 1 hit the left side of unit 2.  Unit 1 operator stated he did not see unit 2 until he was close and tried to turn away before hitting unit 2.  Unit 1 said the accident occured west of Cedar Island and that he could see Marina from the location they were at.  Unit 1 sideswiped unit 2.  
  
  Both units drove to Chicago Boat House for the report.  Unit 1 had damage to the right side of the boat.  Visible were scrathes and above the waterline was a crack in the fiberglass.  Unit 2 was showing scratches on the left side with the scratches higher above the waterline and more towards the rer of unit 1.