Fresh water was supplied 

 surface support center, 

 discharged through a 400- 



The alarm system between 

 sxunmarized in Table 3. 



through a hose in the umbilical bundle from the 

 The toilet was a salt water marine type which 

 -foot drain hose to the sea. 



ALARM SYSTEM 



the habitat and the surface support center is 



Sensor 



Habitat-Bridge Alarm Surface-Control-Center 



Alarm 



Visual . . Audible 



Visual 



CO2 partial pressure 

 O2 partial pressure 

 120-V power loss 

 Entry trunk water level 

 Wet room flooding 



Meter/light Buzzer 



Meter/light Buzzer 



Light Buzzer 



Light Buzzer 



Light Horn 



Audible 



Table 3. TEKTITE II Alarm System 



SERVICE BARGE 



The service barge, referred to throughout the program as the "Pinafore," 

 was a steel utility barge 45 feet long by 18 feet wide. It was moored to 

 three concrete cltraips and was located on the surface approximately 15 

 feet west of a point directly over the habitat. The Pinafore, acquired 

 through surplus property listings from atop an oyster bar in South 

 Carolina, provided outstanding service to the program, first as an equip- 

 ment transport barge during the set-up phase, then as a work platform 

 during ballast and emplacement of the habitat and laying of the umbilicals, 

 and finally for umbilical recovery and site evacuation. During the 

 operational phase, it served as the staging site for all materials 

 and equipment transferred to and from the habitat. A hard-wire field 

 telephone link between the Pinafore and the habitat wet room aided in 

 coordinating transfers of personnel and material. 



DECOMPRESSION BARGE 



The primary decompression facility (Figures 5 and 6) was mounted on a 

 pontoon catamaran decked over with 3/16-inch metal panels. Each pontoon 

 was 50 feet long by 5 feet in diameter. The pontoons were joined on 

 20-foot centers by bolted transverse I-beams. When the catamaran was 

 first assembled, the 4-inch transverse I-beams proved incapable of 



Il-f 



