22 



MAJOR PROGRAM AREAS 



Fig. 15. Sealab II aquanauts work with 

 Tuffy, the trained porpoise, in a floating 

 pen near the Sealab site 



I 



$ 



Fig. 16. Tuffy, wearing a harness, 

 swims outside the floating pen 



Comments by the aquanauts indicated that meals were considered palatable and generally 

 good, although midway through each of the periods, some of the aquanauts complained about 

 the monotony of the meals. 



By general observations via closed-circuit TV, it appeared as though eating became more 

 than just a necessity. On the average, though a specific calorie account was not maintained, 

 the aquanauts were of the opinion that they had consumed at least one -fourth again as much 

 food each day as normal. These opinions were confirmed by observation. 



MK-VI SEMI-CLOSED-CIRCUIT SCUBA EVALUATION 



The initial preparation of gear and the training of Sealab personnel in the use of the Mk-VI 

 scuba was accomplished under the supervision of the U.S. Naval Mine Defense Laboratory Div- 

 ing Officer. Training encompassed four weeks and included three weeks of diving in the open 

 sea at depths ranging from 30 to 180 ft. 



