318 



ENGINEERING EVALUATION 



Table 45 

 SEALAB II - TOTAL CONNECTED ELECTRICAL LOAD 



Emergency interior lighting was provided by relay-operated and manually operated hand 

 lanterns. The relay-operated lanterns would turn on automatically if there were a power 

 failure. 



Exterior Lighting — Exterior lighting was provided by six 1000-watt incandescent standard 

 Navy diving lights. These lights were installed on adjustable mounting brackets on the exterior 

 hull of Sealab II. The mounting brackets were constructed so that the lights could easily be re- 

 moved and used as far as 150 ft av/ay from the hull. The individual lights were connected by 

 underwater connectors to a pigtail, which entered the hull through the instrumentation cable 

 trunk, after Sealab II emplacement on the bottom. Each light was controlled by a switch located 

 inside the Sealab. 



Ventilation System 



The ventilation system was designed to provide the following functions: 



1. Removal of carbon dioxide (CO2) 



2. Removal of odor, hydrocarbons, and aerosols 



3. Atmospheric circulation and distribution 



4. Make-up gas mixing. 



The CO2 scrubber consisted of 12 lithium hydroxide (LiOH) canisters arranged in the par- 

 allel configuration, with a design capacity of approximately 540 man hours of operation per 12 



