PRESSURE 

 GAUGE 



FILTER FOR 

 HOOKAH 



Compressed air for bubble attenuation 

 work, hookah, and other applications 

 is available on the lower deck. It is 

 valved for single or multiple use. 

 Bubble screen air and hammer hoses 

 are connected to these valves. The 

 bubble screen air flow of 200 cubic 

 feet per minute is valved off. 



SEA SURFACE 



BUBBLE SCREEN * 



HYDROPHONE 2 



EXPLOSIVE 

 CHARGE 



HYDROPHONE 1 



AIR FROM TOWER 



SEA FLOOR 



57 



