UNDERSEA TECHNOLOGY 



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The Navy's Scalab III habitat. Sealab III is the third phase of the open-ocean 

 tests of the Man-in-the-Sea program. During the experiment, five teams of eight 

 aquanauts, civihan scientists, and Navy divers will occupy the habitat for 12-day 

 periods during the scheduled 60-day experiment. The habitat, a modification of the 

 Sealab II capsule, is a nonpropclled, seagoing craft, with a hving compartment, a 

 diving locker, and an observation room. The habitat has a pressurized hehum-oxygen 

 atmosphere equal to the surrounding sea water pressure. 



Sealab III, the most ambitious saturated diving experiment to date, will 

 be conducted during the summer of 1968 at the Navy range off San 

 Clemente Island, California. In the Sealab III experiment five teams of 

 eight Navy and civilian aquanauts will live successively in the sea floor 

 habitat for 12-day periods. The habitat will initially be placed at a depth 

 of 450 ft for use by two or three of the eight-man teams. The habitat will 

 then be moved to a depth of 600 ft for the remainder of the experiment, 

 with two or three teams living and working at the greater depth. 



The 40 aquanauts who participate in Sealab III will include Navy per- 

 sonnel and civilian scientists and technicians from Navy facilities and other 

 government and private agencies. Their biomedical experiments will in- 

 clude extensive psychological testing, research in marine biology, sonic 

 work, and evaluation of thermal protection. In conjunction with the last, 



