Witness and involved party statements indicate the PWC was travelling at slow speeds with operator and passenger (seated) heading towards a boat dock.  The PWC suddenly began accelerating quickly toward the dock at a 90 degree angle.  The passenger jumped overboard into the water voluntarily prior to the collision.   The PWC operator remained seated on the PWC as it collided with the dock, went airborne and landed on a rock seawall located behind the dock.  The PWC operator was then ejected and thrown 3-5 feet in front of the PWC onto the rock seawall.  After landing on the rock seawall, the PWC slid back into the water, trapped between the dock and the rock seawall.  Statements indicate the PWC operator was inexperienced with the operation of the PWC and may have mistaken the PWC controls during the incident.
Kenosha