  UNKNOWN SOURCE-- FIRST CHARTED IN 1983. LAT. 39-17-03.4 N, LONG. 76-36-30.0 W. SCALED FROM CHART 12281. (ENT 8/24/95, SJV)
  H10632/97-- OPR-E346-AHP; OBSTRUCTION LOCATED BY SIDE SCAN SONAR IN LAT. 39-17-02.789N, LONG. 76-36-30.281W (PILE). FATHOMETER