86 DESIGN, CONSTRUCTION, AND OUTFITTING 



3. Engineering studies in the following areas must be undertaken at once: 



a. Atmosphere treatment to insure comfort and safety. Phychrometric charts for an 

 He-02 atmosphere must be developed, and adequate dehumidification devices must be designed. 



b. An integrated gas supply and ballast control system to allow controlled descent and 

 pressurization from within, much as a submarine statically dives. Once perfected, this would 

 preclude heavy pressure structures. 



4. The interior arrangment of future habitats must be developed from the standpoint of 

 human engineering, wherein careful functional analyses are made. In particular, attention 

 must be given to the entry and diving -station area. 



5. A means for leveling the habitat is a necessity, since it became obvious a level site is 

 very difficult to find. 



6. Communications and monitoring equipment must be improved. 



7. For succeeding man-in-the-sea operations, realistic schedules must be developed. 

 Expedience must never be a substitute for quality. 



In conclusion, appreciation must be given to the fine people connected with the Sealab II 

 project, and in particular the men and women of the Hunters Point Division of the San Fran- 

 cisco Bay Naval Shipyard. All of them made Sealab II and this paper possible. 



