 HISTORY
  H10917/00--OPR-D392-WH; SIDE SCAN SONAR CONTACT LOCATED DURING MAIN SCHEME HYDROGRAPHY.  ECHO SOUNDER DEVELOPMENT CONDUCTED TO VERIFY CONTACT'S POSITION AND HEIGHT.  ECHO SOUNDER LD OF 38.6 FEET (11.8 METERS) IN LAT. 38/51/44.00N, LONG. 75-03