PROSPECTS FOR THE FUTURE 



95 



SIDE-LOOKING SONAR 



MARCH 12,1967 



R/V THOMAS WASHINGTON 



LEFT SIDE-LOOKING SONAR 



Side-looking sonar record obtained near the sea floor by towing two narrow- 

 beam echo-ranging systems directed horizontally to the left and right of the 

 towed vehicle. Echoes are recorded from rocks, sand ripples, hummocks, and 

 artifacts lying on the ocean bottom. 



