Long landing, loading, and working platform 

 near the water surface extends along the 

 east side. Surface collections and measure- 

 ments are made from this steel grating 

 catwalk. 



Diver descends from the diving platform to 

 install sea-floor instrumentation. He is 

 trailing hookah hose containing compressed 

 air at 1 25 psi. 



Scuba-equipped technician emerges 

 from the water by climbing a retracta- 

 ble ladder which extends down through 

 a trap door in the center of the diving 

 platform. 



113 



