reduce the breakout forces. The pads were also to have a circumferential ring 

 to protect against scour and presumably to act as a key to resist the horizontal 

 forces. 



hydraulic package 



baseplate 

 leveler 



Section A-A 

 typical both ends 



Figure 31 . Project Atlantis manned station. (From Chrysler Corporation, 1968. 

 ©University of Miami and Chrysler Corporation. Used by permission.) 



Santa Barbara City College is fabricating an ambient pressure structure 

 for temporarily sheltering several men (Hallanger, 1970). The structure, which 

 will be deployed in 30 to 40 feet of water, will include a tower that extends 

 above the air— sea interface. 



Three other habitats have been fabricated and will be utilized in the 

 near future. Sealab III, the first of these habitats, is basically a modified ver- 

 sion of the habitat used in Sealab 1 1 (Eager, 1968; Dowling, 1969; Hallanger, 

 1970; Huh, 1969; Stiles, 1969). It was designed to be deployed in 610 feet 

 of water near Wilson Cove on San Clemente Island, California. The seaf loor 

 at the site was investigated extensively by NAVOCEANO and was found to 

 be basically a dense, well-graded sand with occasional larger rocks. Average 

 slope at the site was 3 degrees. 



54 



