Characteristics 



the fairing will have the following characteristics: 



Resistance coefficient — 0.3 



EA as 12,000 pounds 



Breaking strength — 1,200 pounds 



Maximum length = 200 feet 



Construction 40-to 60-duroraeter neoprene 



rubber with 6-ply Dacron- 

 cord reinforcement 



Weight in air s: 0.67 pounds per foot 



Weight in water 2s 0.17 pounds per foot 



INSTRUMENT HOUSING 



Requirements 



The general requirements for the instrument housing are 

 given in (2). Since the tension in the cable is maximum at 

 the top, decreasing with depth, and the hydrostatic pres- 

 sure is at a minimum at the surface, increasing with depth, 

 the forces acting on the instrument case vary according to 

 the position of the housing along the cable. The end caps of 

 the housing, being free-flooding, are not affected by the 

 hydrostatic pressure and are subject only to the tensile load 

 imposed by the cable. This is not true however, of the cen- 

 tral, watertight, cylindrical compartment v^ich will house 



1.17 



