variety of underwater cameras, 

 .•■.,... -,..11 and motion picture, are utilized 

 )o record underwater phenomena. Each 

 camera is protected by a specially de- 

 signed waterproof housing and is neutrally 

 >uoyant to achieve maximum underwater 



diver is jetting a vertical stanchion into 

 the ocean bottom. s The vertical orientation 

 of the stanchion is established by a self- . 

 plumbing gimbaled level* in the tripod, 

 stand. Jetting is facilitated by a tapered 

 nozzle. Stability is afforded ki»:-"finS« 

 welded on the- pipe sranchi 

 "deadmen" anchors are utiliz 

 port temperature and curren' 

 acoustical reflectors, and buoy! 



