RedactedNarrative: On Sunday April 27, 2014 at approximately 1500hrs, I was dispatched to a boating accident Jet Ski vs Rocks at Dock A at American Water sports Jet Ski rentals in Miami Beach, Florida. Upon my arrival I made contact with the reporting party and a representative from American Water Sports. Operator1 was the operator of the Persona l Water Craft (PWC) at the time of the accident. The Accident occurred on the Meloy channel just before Belle Island between 15 st and Flamingo road in Miami Beach Florida by the sea wall near the rocks. After conducting interviews and examining the damage on the PWC, I have come to the conclusion that Operator1 was traveling north bound on the Meloy channel at an approximate speed of 20-30 miles per hour at a distance of approximately 50 feet from the sea wall . When Operator1 tried turning to avoid getting closer to the sea wall the PWC shut off. Operator1 then continued turning away from the sea wall when a large wake came turned the PWC into the rocks and caused the PWC to collide with the sea wall. The collision caused the engine to shift out of place approximately five inches forward of where it was supposed to be, making the PWC inoperable. There was also damage to the bottom of the PWC causing fiberglass cracks. Operator1 was issued a warning for careless operation of a PWC.