 HISTORY
  H10506/93--OPR-1173-MI; SIDE SCAN SONAR CONTACT AND DIVE OPS LOCATED ROCK PILE WITH LEAST DEPTH OF 53 FEET IN LAT 18-19-37.56N, LONG 064-57-15.82W (NAD 83).  ROCK PILE IS ALSO REFFERED TO IN AWOIS 9782 WITH OTHER CHARTED ROCK PILES. (ENT 06/0