  CGD8 LNMM 10/92, 03/02/92;  REPORTS A ROCKY SUBMERGED OBSTRUCTION, PA, AT A REPORTED DEPTH OF 3.5 FATHOMS, IN LAT. 28/58/10.8  N, LON. 91/27/44.4 W. (NAD83) THE OBSTRUCTION CONSISTED OF LIMESTONE ROCK. (ENTERED 12/03 BY KRW)