  H11140/02-- S-G913-WH; SIDE SCAN SONAR LOCATED UNCHARTED OBSTRUCTION. SWMB LD OF 28.87 FEET (8.779 METERS) IN LAT. 31-57-13.703N, LONG. 80-44-19.268W RISING APPROX. 1.24 METERS OFF THE BOTTOM. SURROUNDING DEPTHS ARE 31-34 FEET. SCOUR TRAIL LEADING EAST