CONCLUSIONS AND RECOMMENDATIONS 



Based on an evaluation of two alternative methods for predicting 

 steady- state towing configurations and towline tensions of a cable-body 

 system towed by bare cable, and comparisons made between predictions 

 and measurements obtained from towing experiments conducted at sea, 

 the following conclusions are drawn: 



1. Within the range investigated, Method 1 is the best of the two 

 methods from the standpoint of providing better predictions of both the 

 steady-state tensions and configurations for a body-dominated cable- 

 towed-body system utilizing bare cable. 



2. Using a cable drag coefficient Cr = 1.5 and a tangential force 

 factor f = 0.02, Method 1 can be used with reasonable accuracy to predict 

 the cable tension, the cable angle at the towing ship, and the body depth 

 for the case of a body-dominated system utilizing a bare cable. 



3. Using a cable drag coefficient Cr =1.5, Method 2 can be used 

 to predict the body depth and the cable angle at towing ship, but will 

 tend to predict cable tensions that are too high in the case of a body- 

 dominated system utilizing bare cable. 



4. Additional experiments are required to determine whether 

 Method 1 can be extended to the case of a cable-dominated system. 



In view of the foregoing, it is recommended that Method 1 (using 

 values of Cp> = 1.5 and f = 0.02 until further notice) be adopted as the 

 standard procedure for making predictions of steady-state configurations 

 and tensions for body-dominated towed systems using bare cables. 



ACKNOWLEDGMENTS 



The authors wish to express their gratitude to Mr. Morton Gertler 

 and Mr. George B. Springston, Jr. for their contributions and assistance 

 in the preparation of the text of this report and in the analysis of the data. 



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