The predicted changes in the vertical separations of the remote sensors rela- 

 tive to the depressor corresponding to changes in depressor coefficient of tension 

 are shown in Figure 20. The predictions assume that the remote sensors are 10 and 



20 m above the depressor when the depressor is operating at a tension coefficient C 

 of 1.5. This figure indicates the importance of operating as close as possible to 

 the maximum coefficient of tension to minimize relative height variations during 

 cyclic control. 



Predicted towing tension as a function of wetted cable length is sho^^m in Fig- 

 ure 21 for various speeds and depressor tension conditions. The sharp increases in 

 tension near the depressor indicated on some of the plots result from the drag of 

 the remote sensor cables. At-sea data are not compared to the predictions in Figure 



21 since the available tension results apparently were strongly affected by the 

 depressor depth cycling. However, inspection of the data indicates that the pre- 

 dictions are at least nominally correct and adequate for the purpose. 



52 



