  CL911/80--USPS CHART CORRECTION LETTER;  REPORTS AN ABANDONED DREDGE PIPE MANIFOLD 48".
  LNM8/01--8CGD (20 FEB. 2001);  ADDED A SUBMERGED OBSTRUCTION, PA, IN 30/13/11.5N, 093/14/54.19W (NAD83).  THIS MOST LIKELY IS ONE OF THE OBSTR. (PIPE) REPORTED I