RedactedNarrative: INCIDENT OCCURRED JUST SOUTH OF GUTTENBERG CITY BOAT RAMP ON A WINGDAM VERY NEAR RIVER MILE MARKER 614. VESSEL1 WAS TRAVELLING DOWNSTREAM FROM RAMP NEAR MILE MARKER 614 AND HIT A WING DAM. THE IMPACT PUNCTURED A HOLE IN THE BOTTOM OF THE ALUMINUM BOAT MID-SHIP ON MIDDLE CHINE.    PASSENGER PASSENGER 1 WAS SEATED ON PORT SIDE OF VESSEL. THE SUDDEN STOP CAUSED PASSENGER 1 TO LUNGE FORWARD WHERE HIS HEAD HIT THE VISOR CAUSING A MINOR SCRAP AND BUMP ABOVE HIS RIGHT EYE.  GUTTENBERG FIRE DEPARTMENT TOWED THE VESSEL TO SHORE AS IT HAD TAKEN ON WATER.   PASSENGER 1 WAS TAKEN TO GUTTENBERG HOSPITAL AS A PRECAUTIONARY MEASURE WHERE HE WAS EVALUATED AND RELEASED.  NO ALCOHOL HAD BEEN CONSUMED AND ALL 3 WERE WEARING A LIFE JACKET.