  H10741/97-- OPR-G309-WH-96;  AN OBSTRUCTION WITH A LEAST DEPTH OF 32 FEET WAS LOCATED IN POSITION 33 48 17.78 N. 078 00 57.70 W (NAD 83). DIVERS FOUND WHAT APPEARED TO BE A SUNKEN BUOY RISING 7 FEET OFF THE BOTTOM IN AN UPRIGHT POSITION. HYDROGRAPHER R