RedactedNarrative: Operator advised that he was alone on the jet ski, on the c_15 Canal.  He was traveling westbound in the canal at an unknown rate of speed, when he lost control, and collided into a dock.  During the collision operator hit his head on the dock causing a large laceration to his head, requiring staples to close the wound. He suffered a 12 centimeter laceration from left ear to top of head.  Transported to Delray Medical where received staples to close wound, underwent CAT scan and released same day