
 HISTORY
  H10675/96-97-- OPR-C399-RU; 200% SIDE SCAN SONAR LOCATED A LARGE RECTANGULAR, UNCHARTED OBSTRUCTION. DIVERS DECRIBE A BARGE WITH SURROUNDING SCOUR. BARGE RELIEF IN SCOUR IS 2.4 METERS (8 FEET) BUT NEARLY LEVEL WITH THE BOTTOM. LD OF 8.1 MET