H10790/98-- OPR-E346-AHP; 200% SIDE SCAN SONAR LOCATED A SIGNIFICANT CONTACT WITH AN APPARENT HEIGHT OF 1.1 METERS. ECHO-SOUNDER DEVELOPMENT WITH  5-METER LINE SPACING OBTAINED A LD OF 20 FEET (6.1 METERS) IN LAT. 38-47-31.24N, LONG. 76-29-21.92W.  SURRO