
HISTORY
H9795/78--OPR-0325-DA-78; 4FM DEPTHS EXIST IN VICINITY OF LAT 56-40-02N, LONG 
 132-55-57W. LAUNCH HYDROGRAPHY WAS ACQUIRED USING THE ROSS FINELINE MODEL    
 7000 NARROW BEAM ECHOSOUNDER. THE PRESENT SURVEY WAS THE AUTHORITY FOR THE   
 CH