 HISTORY
  H-5421/33--A  ROCKY SHOAL SHOWN WITH A LEAST DEPTH OF 7.5 FMS.  ENTERED 7/99 MCR
  H10929/99--OPR-P139-RA;  A LEAST DEPTH OF 6.2 FM WAS OBTAINED IN POS.60 19 39.9N, 147 27 51.44W.  EXTENT OF SHOAL AREA WAS DEVELOPED ON THE SURVEY.