RedactedNarrative: During the course of the investigation, both operators gave different stories of how the accident took place. I was unable to determine the cause of the accident. The diagram above represents the trajectory of each vessel according to the operator of each respective vessel. The diagram is consistent with the damage observed on both vessels. 
  
   The following is a statement provided by Operator1.
  On August 7th, 2020 at approximately 9:20pm Vessel one was travelling south on Lake Michigan near Randolph and Lake Shore Drive. Operator1 stated he was heading parallel to the shore when he heard waves. His vessel was then struck on the port beam side. The collision resulted in minor damage to the port beam section of vessel one.
  
  The following is a statement provided by Operator2.
  Vessel two drove north out of the fairway between Navy Pier and Dime Pier. He then adjusted his heading to 220 degrees towards the opening of Monroe Harbor at a speed of approximately 5-6 knots. Operator2 stated Vessel one was approximatley 200-300 yards north of his stern. Operator2 stated vessel one overtook him on the starboard side then sharply turned north in front of Vessel two. Operator2 put the engine in full reverse to avoid collision. Vessel two made impact with Vessel one''s port beam. Operator2 stated the collision took place directly north of the Chicago Marine Safety Station.
  
  Two people were passengers aboard Vessel two. Their statements of how the accident occurred are consistent with the written statement provided by Operator2. A third passenger aboard Vessel two did not see the other vessel until immediately before impact.
  
  Unable to make contact with the other occupants of Vessel two. 
  
  Attached is a written statement provided by Operator2 produced shortly after the accident occurred.
  
  No enforcement action was taken.
  