"ON ABOVE DATE AND TIME, SGT REPSONDED TO A CALL OF A VESSEL IN DISTRESS AT THE ST MARYS ENTRANCE NEAR THE NORTH JETTIES.  AFTER MAKING CONTACT WITH THE NASSAU COUNTY SHERIFF' S OFFICE MARINE UNIT, SGT LEARNED THAT A SAILBOAT HAD STRUCK THE NORTH JETTY WHILE ATTEMPTING TO ENTER THE ST MARYS RIVER ENTRANCE.  OFFICERS ADVISED SGT THAT THE VESSEL WAS FREE FROM THE JETTY ROCKS AND WAS ENROUTE TO EGEN'S CREEK WHERE THE VESSEL CAPTAIN HAD MADE ARRAINGMENTS TO HAVE THE VESSEL REMOVED FROM THE WATER.  UPON ARRIVAL AT THE TIGER POINT MARINA, SGT MET WITH THE CAPTAIN OF THE VESSEL who ADVISED SGT THAT HE THOUGHT HE WAS MAKING ENTRANCE TO THE JETTIES THAT WOULD CLEAR THE ROCKS.  UPON STRIKING THE ROCKS, THE CAPTAIN WAS ABLE TO FREE THE VESSEL AND MAKE IT TO THE TIGER POINT MARINA.  DAMAGE WAS NOTICED IN SEVERAL PLACES ON THE BOTTOM OF THE VESSEL AS WELL AS THE RUTTER AND THE KEEL.;INVESTIGATION COMPLETE;NOTHING FURTHER;