TABLE 11.1 SUMMARY OF INSTRUMENTATION PROBLEMS DURING NAVOCEANO OPERATIONS 



Submersible and Date 



Problem 



Cause 



CUBMARINE PC-3B 

 6/2/66 



6/7/66 

 6/8/68 



6/9/66 



6/10/66 

 6/15/66 



1. no reply from transponder 



2. no recorder in system 



1. low transponder signal amplitude 



1. no transponder reply after 3 hr 



2. pulse amplitude not above noise level 



3. transponder replies erratic (± 10 ms) 



1. synchronous pmger erratic 



2. transponder failed 



1. external camera erratic 



1. one transponder signal lost in noise 



1. batteries did not take charge 



2. no internal space available 



1. batteries not fully charged 



1. (same as above) 



2. noise radiated by vehicle sources 



3. unknown 



1. radiated noise interference 



2. internal failure - bad transistor 



1. marginal power supply 



1. interference from CO, scrubbers 



ALVIN 

 9/6/66 

 6/15/67 



6/20/67 

 6/22/67 



1. external camera inoperative 



1. transponder navigation system marginal 



1. precision depth gage erratic 



1. external camera not operating continuous 



1. camera flooded 



1. high temp. & humidity, interference 

 from Fathometer, radiated inter- 

 ference 



1. radiated noise and voltage surges 

 when ballast pumps activated 



1 . intermittent internal gro und 



DEEPSTAR4000 

 11/3/67 



11/11/67 



11/22/67 



1. sound velocimeter erratic 



2. current meter failed 



3. external camera failed 



4. internal cinecamera failed 



5. transponder inoperative 



1. thermistor inoperative 



2. volume reverberation experiment cancelled 



1. movie lights could not be turned off 



1. radiated noise and voltage surges 



2. flooded connector 



3. broken lead in connector 



4. ground in motor drive 



5. internal failure 



1. internal failure 



2. cracked mounting frame could not 

 support weight of hydrophone 



1. high pressure malfunction 



STAR III 

 3/8/67 

 3/9/67 

 3/11/67 

 3/29/67 



4/5/67 



1. TV marginal 



1. no photography 



1. one external camera inoperative 



1. transponder system erratic 



1. strobe light inoperative 



1. interference from pinger 



1. strobes broken during launch 



1. stbd. camera flooded 



1. acoustic interference from tracking 

 pinger 



1. broken lead in connector 



ALUMINAUT 

 10/12/66 



1. current direction indicator failed 



2. temp-depth erratic 



1. internal failure 



2. subbottom profiler interferes 



542 



