primary seal water 

 dam receptacle 



. retainer nut 



secondary seal water 

 dam receptacle 



Figure 19. Multiple-connector hull fitting for submarines. 



The approximate availability of dry electrical connectors for under- 

 water power systems as function of voltage and amperage rating is presented 

 in Figure 20. An extremely small power level area can be satisfied with pre- 

 sently available connectors. A significant program, therefore, will be required 

 for the development of underwater connectors suitable for use at high power 

 levels. 



Cable Suspension Systems 



In the study program, the analysis of cable suspension systems was 

 based on the assumption that the cable is affected by its own weight and 

 the trace configuration it assumes when deployed. The suspension system 

 was primarily studied for use with surface-tendered power units. 



The length of cable, which determines the cable weight, is a function 

 of the depth of the load module and the excursion of the surface unit. The 

 excursion of the surface unit depends, in turn, on the environment in which 

 it is placed. Since the environment could not be predicted, the cables were 

 chosen to include those lengths which might be required to reach depths of 

 600, 2,000, 6,000, 10,000, 15,000, and 20,000 feet. 



To limit the length of cable required, the center of excursion for the 

 surface unit should be placed directly over the load module. However, it has 

 to be assumed that the surface unit travels through its excursion limits for an 

 unknown number of cycles during its deployment. This cycling causes a 



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