90 MODIFICATIONS AND OUTFITTING 



I. Exterior 



1. Secure gas bottles in racks with wooden wedges. 



2. Install freshwater manifold and pressure regulator in Sealab/Staging Vessel freshwater 

 system. 



3. Attach human-engineering test platform to after end of shark cage. 



4. Install BT winch mount on shark cage. 



5. Install racks for ten 38-cu-ft emergency scuba bottles. 



n. Interior 



1. Install shower curtain rod. 



2. Install hookah compressors. 



3. Install self-coiling hoses on all Bibb system outlets. 



4. Install carpet on deck. 



5. Install heated-suit power pack in laboratory space. 



6. Install event recorder in laboratory space. 



7. Install Krasberg POj sensing and monitoring unit on vent-system compartment. 



8. Install electric timers for human-engineering tests beneath patch panel. 



9. Install hanging rod behind refrigerator-freezer for stowage of charcoal filters. 



10. Install light banks, filter, and plant-box racks in water-closet space. 



11. Install FM speakers overhead in berthing space. 



12. Clean and pressure test all gas systems. 



13. Install TV camera mount aft of main access. 



14. Install electrowriter transceiver. 



15. Install wedge spirometer. 



When it was determined that all modifications were complete, a complete systems check 

 was performed. Sealab II was sealed and pressurized to 5 psi above atmospheric pressure. All 

 electrical and gas systems were checked for proper operation. Sealab n was then placed in the 

 water for trim tests and cycling of the flood and vent system. 



With all preparations complete, the habitat was towed to the site near La JoUa. 



