Figure 14 and Table 4 show that the total tensions predicted using 

 Method 1 are in close agreement with the measured values. For the 

 280-foot scope, the agreement is within about 4 percent at 10 knots. 

 On the other hand, the total tensions predicted using Method 2 are sub- 

 stantially higher than the measured values. For the 280-foot scope, the 

 predicted value is about 17 percent higher than the measured value at 

 10 knots. It should be noted that these comparisons are based on the 

 total tensions rather than the net tensions discussed earlier. As such, 

 they include the tension due to the body and the weight of the towcable as 

 well as the contribution of the hydrodynamic force acting on the cable. 



Figure 15 and Table 4 show that both methods provide reasonably 

 close predictions of body depth over the entire range of speeds and 

 scopes investigated. 



Figure 16 and Table 4 show that the predictions of the cable angle 

 obtained by both methods are in close agreement; however, the predicted 

 angles are slightly larger than the measured values except for the 100- 

 foot scope . 



Although the total tension predicted by Method 1 is in close agreement 

 with the measured values, it should be understood that even for the 

 280-foot scope, the total tension at the ship is due predominantly to the 

 forces acting on the body rather than on the cable (body-dominated system). 

 This is typical of a wide variety of cable-towed body systems. However, 

 there are some systems of interest that are essentially cable dominated. 

 It is believed that an additional set of specialized experiments should be 

 conducted to provide data to validate a prediction method for this type 

 of system . 



19 



