Speiss, Mudie and Lowenstein 



SURFACE ECHO-SOUNOER RECORD 





ANSPONOER / 



OGS TALK >, 



200 400 

 SCALE 1 ' --'-■' * 



BOTTOM PROFILE 

 MEASURED FROM FiSH 



Fig. 7 - Echo sounder trace in area B. Upper 

 record from hull mounted echo sounder, lower 

 trace (middle of lower portion) is record from 

 deep towed sounder. 



Fig. 8 - Side -looking sonar 

 traverse across canyon in 

 area D 



78 



