Additional communications equipment included: a hard-wire phone from the 

 command van to the habitat crew quarters, which was used for private con- 

 versations; an FM transceiver providing two-way communication with 

 identical units located at the base camp and both the public affairs 

 office and administration office on St. Thomas; a hard-wire field tele- 

 phone with interconnecting stations at the base camp; the causeway pier; 

 and the dive platform. 



A description of the audio and visual monitoring equipment and related 

 instrumentation located in the behavioral observer's section of the 

 command van can be found in the human behavior section of this report. 



The utilities trailer shown in Figure 12 contained a variety of diesel 

 generators providing electrical power to the command van, the dive 

 platform-decompression barge, and the habitat. It contained a high- 

 pressure scuba charging compressor for the habitat charging station, a 

 low-pressure, high-volume purge compressor which could provide purge air 

 to the habitat or, through a tee connection, to the decompression barge 

 as a backup low-pressure source. Redundant low-pressure, bellows-type 

 compressors supplied the makeup air to the habitat at a rate of 30 SCFH. 

 The trailer also contained step-down transformers for regulating the 

 current to the habitat and a master panel of circuit breakers and switch 

 boxes which permitted a choice of generator selection during normal 

 shutdown or loss of power. 



-AIR COMPRESSOR 

 HP BACKUP 3000 PS I 



SWITCH BOXES 



DIESEL-ELECTRIC GENERATOR 

 GENERAL MOTORS 

 60 KW 



nzi dzi cm 



m H m 



TRANSFORMERS 



AIR COMPRESSORS 



LP 100 PSI 



POWER DISTRIBUTION PANEL 



T 



CONVENIENCE 



OUTLET-, /-3000 PSI DRYER 



AIR COMPRESSOR 

 H P 3000 PSI 

 RIX 



WATT-HOUR 

 METER 



DIESEL-ELECTRIC 



GENERATOR 



30 KW 



DIESEL-ELECTRIC 

 GENERATOR 

 30 KW 



t; 



IMBER PLATFORM 



FILTER COMBINATION 



AIR COMPRESSOR 

 PURGE (100 PSI) 



loooool 



BOTTLE BANK, HP 



PNEUMATIC INTERFACE 



ELECTRICAL POWER 

 UMBILICAL INTERFACE 



> 



Figure 12 , Utilities Trailer Layout 

 11-15 



