  H10891/99--OPR-K171-KR;  OBSTRUCTION LOCATED BY SIDE SCAN SONAR AND MULTIBEAM ECHOSOUNDER IN LAT. 29/21/37.84N, LONG. 093/10/24.62W(NAD83) WITH A LEAST DEPTH OF 48.2 FEET (MLLW).  (ENTERED 2/01 BY MBH)