 HISTORY
  NM12/67-- SHIP SHOAL-OBSTRUCTION INFORMATION; AN UNIDENTIFIED 
OBSTRUCTION, APPROX. 30 X 60 FEET WITH A LD OF 6 FEET REPORTED IN 
APPROX. POS. LAT. 28-55-06N, LONG. 90-39-30W. SITE REPORTED 
MARKED BY UNLIGHTED WHITE BUOY. (ENT 3/10/93, SJ