event of a total power (normal and emer- 

 gency) loss the steel shot is automatically 

 dumped. Emergency power can be used to 

 operate jettisoning circuits, underwater tele- 

 phone, radio, and life support equipment. 



Fire and Noxious Gasses 



An emergency breathing system for four 

 people is carried which consists of four full- 

 face masks coupled to a common rechargeable 

 LiOH/charcoal cannister and oxygen supply 

 with a breathing bag which acts as an accu- 

 mulator. A pressure of 1.5 inches of water 

 above cabin ambient pressure is maintained 

 in the emergency system to prevent contami- 

 nated air from entering. The system provides 

 a total of 3 hours for each person. Two 2.5- 

 pound CO2 fire extinguishers are carried at all 

 times. When a fifth person is carried, an OBA 

 (Oxygen Breathing Apparatus) is added. 



Deballasting Loss 



In the event that normal ballasting meth- 

 ods and power are lost, the following may be 

 dropped to gain positive buoyancy as 'indi- 

 cated: 



Not included above are the jettisonable me- 

 chanical arms and brow and breakaway pan 

 and tilt mechanisms (Fig. 2.7). 



Tracking Loss 



If DEEP QUEST becomes separated from 

 TRANSQUEST , it has several options while on 

 the surface for communication and location. A 

 radio direction finder on the support ship may 

 home in on a 2182-kHz voice transmitter, or a 

 Coast Guard aircraft may home on a 121.5- 

 MHz signal transmitted from a self-powered, 

 omnidirectional emergency beacon aboard the 

 submersible. A transducer affixed to the bot- 

 tom of the submersible allows for UQC com- 

 munication when surfaced. A floodable sail 

 over DEEP QUESTs top hatch allows for 

 opening of the hatch in inclement weather to 

 flush out cabin air if required. Surface view- 

 ing capability without opening the hatch is 

 attained through use of the sail-mounted tele- 

 vision periscope. DEEP QVEST's interna- 

 tional orange sail and rudder provide excel- 

 lent contrast against all spectrums of water 

 color. A pressure-switch actuated, sail- 

 mounted, flashing xenon light is provided for 

 nighttime visual location. 



BOW RACK 



MANIPULATORS 



TRIM HG 

 1,250LB 



STEEL 

 SHOT 



1 700-LB LISTHG FWD BATTERY 

 800- LB CELLS 



3,500-LB 



PAN & 

 TILT 



Fig. 2.7 DEEP QUEST's jettisonable components. 



26 



