RedactedNarrative: I responded to the intercoastal waterway of Rookery Bay near marker 27A in reference to a vessel running aground, causing an injury to the passenger. Once on scene I observed a 29 ft Hinkley aground on a sandbar just outside of the ICW channel. The operator stated that he lost sight of the channel markers and accidentally drove out of the channel and onto the sandbar just west of marker 27A. His wife was sitting on a seat on front of the center console and upon striking the sandbar she was thrown forward into a table in the bow area. She suffered lacerated pancreas, liver, and spinal cord damage and was transported to the hospital via medflright. The operator had no injuries.