dominant design factor. The size of the conductor, depending 

 as it does en the characteristics of titie instrumentation, 

 cannot be definitely established at this time. Rigid speci- 

 fications of cable size must await delineation of specif ic 

 applications on which instrumentation choice, arx3 hence 

 conductor size, depends. However, it appears likely that 

 cable of at least one -half- inch diameter will be required far 

 most applications. To allow for some flexibility in the 

 instrumentation, cable of three-quarter-inch diameter was 

 selected for this study. On this basis, maximum towing speed 

 attainable without allowing the tension to exceed one-third 

 the breaking strength of the cable, is about 7,2 knots. The 

 downforce required at this speed is about 4450 pounds. 



24 



