  LNM52/81--CGD8, 12/21/81;  REPORTS AN UNDERWATER CASING OBSTRUCTION HAS BEEN LEFT BY TEXACO COMPANY IN LAT. 28/53/30.00N, LONG. 089/15/23.00W (NAD27) WITH A DEPTH OVER THE CASING OF 216 FEET AND MARKED WITH AN ORANGE & WHITE BUOY WITH LIGHT & FOG SIGNA