the first 4,000 feet of water. Below this depth, the major oceans conform to 

 a narrower range of limits. Table 2 presents a summary of critical environ- 

 mental conditions established as design parameters for the development of 

 underwater power transmission systems. 



Table 2. Summary of Environmental Design Parameters 



Surface Conditions 



Wind velocity, max (mph) . 

 Current velocity, max (knots) 







150 

 10 

 60 

 29.4 

 35.0 (or 



3.5%) 



Wave height, max (feet) . . 







Water temperature C^ 

 Salinity (ppt) . . 



C) . . 













Subsurface Conditions 



Depth (feet) 



600 



2,000 



6,000 



10,000 



20,000 



Water temperature, 

 max (°C) 



Density (Ib/ft^) 



Current velocity 

 (knots) 



23.9 



64.05 



6 



18.3 



64.25 



3 



12.8 

 64.68 

 0.35 



7.2 



65.03 



0.35 



7.2 



65.85 



0.35 



Bottom Conditions 



Sediment shear strenath (osi) 







1.0 













SUBMERGED (IN-SITU) POWER SYSTEMS 

 In-Situ Power Sources 



Numerous energy sources and energy conversion systems are available 

 for power plants located below the surface of the ocean. Power plants for 

 deep ocean use must function with infrequent, periodic exposure to the 

 atmosphere. Many of the problems encountered in developing a power plant 



