TABLE 11.1 SUMMARY OF INSTRUMENTATION PROBLEMS DURING 

 NAVOCEANO OPERATIONS (Cont.) 



10/19/66 



10/24/68 



1/9/67 



2/14/68 



8/4/68 



8/9/68 



8/10/68 



1. strobe lights inoperative 



2. magnetometer erratic 



3. no focus on TV camera 



1. strobe lights out of synch. 



2. no photos on one camera 



1. partial photo coverage 



1. random strobe firing 



1. magnetometer inoperative 



1. side-scan sonar marginal 



1. side-scan sonar failed 



1. broken connector 



2. interference from subbottom 

 profiler 



3. flooded cable 



1. long, impregnated cables 



2. camera flooded 



1. film advance erratic 



1. voltage regulator malfunction 



1. low resistance between leads due to 

 salt water leakage in hull penetrator 



1. acoustic, electrical and mechanical 

 noise generated by other systems 



1. high temperature and humidity 

 causing overload actuation 



BEN FRANKLIN 

 6/30/69 



7/15/69 



7/16/69 



7/14/69-8/14/69 



1. SVSTD data incorrect 



1. subbottom profiler inoperative 



2. transmissometer failed 



1. magnetometer failed 



2. 70-mm camera system malfunction 

 1. SVSTD data not continuous 



1. temperature sensitive component in 

 logic unit 



1. overload to power amplifier probably 

 caused by external leak in hull 

 penetrator 



2. outboard electronics flooded 



1. ruptured diaphragm in magnetometer 

 head 



2. strobe cable splice flooded 



1. magnetic tape takeup occasionally 

 uneven 



and causes of instrument failures on several 

 different submersibles encountered by the 

 Naval Oceanographic Office from 1966 to 

 1969. From these and other frustrations 

 grew the realization of the need to develop 

 dependable, safe and operationally applica- 

 ble instruments and work tools. 



Considering the numerous obstacles to in- 

 strument development and application, it is 

 surprising that any were successful, but 

 through desire and necessity a wide array of 

 scientific equipment has been employed. The 

 variety is so great, indeed, that it verges on 

 the encyclopaedic to describe all of them. 

 Instead, an overview of the more or less 

 successful instruments is given. In some in- 

 stances these devices were used merely as 

 part of a test and evaluation program to 



determine the feasibility and desirability of 

 conducting various measurements from sub- 

 mersibles. 



The scientific instruments discussed below 

 are those described in various technical jour- 

 nals or special reports. Undoubtedly, there 

 are other instruments which were employed 

 on one or more tasks, the details of which are 

 not available. Hence, the instrument tabula- 

 tion is not truly comprehensive, but serves 

 as an indication of the approaches taken and 

 the potential thus provided for using sub- 

 mersibles in ocean endeavors. A most com- 

 prehensive and detailed description of hand 

 tools and mechanical accessories for sub- 

 mersibles is given by Winget (6). For the 

 potential designer and user of submersible 

 tools this report is recommended. 



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