  H10891/99--OPR-K171-KR;  OBSTRUCTION LOCATED BY SIDE SCAN SONAR AND MULTIBEAM ECHOSOUNDER IN LAT. 29/22/24.52N, LONG. 093/10/44.61W(NAD83) WITH A LEAST DEPTH OF 45.6 FEET (MLLW).  (ENTERED 2/01 BY MBH)