RedactedNarrative: Impartial witnesses stated that both vessels were travelling south/downstream with vessel 1 in front and to the left of vessel 2.  Somewhere near the northern boundary of the harrah''s casino no wake zone, vessel 1 turned to the right into the path of vessel 2 as they quickly slowed down.  Although vessel 2 attempted to maneuver away from vessel 1, the two vessel''s collided.  Operator1 was injured.
   