ed pam) a me ta © 
SYSTEM CONFIGURATION 
The general cable-system configuration to be considered 
in this discussion is shown in Pigure 1. We will restrict 
our consideration to the case of a body towed from the water 
surface with the cable lying in a vertical plane and curved 
concave downward. This configuration is designated as the 
"Quadrant I Case", in Reference l. 
The forces acting on an element of the cable are shown 
in Figure 2. These are defined as: 
F, the hydrodynamic force per unit length acting 
normal to the element, 
G, the hydrodynamic force per unit length acting 
tangential to the element, 
W, the weight of the element per unit length, and 
T, the tension in the cable. 
The principal distinction between calculations for bare 
cable and those for faired cable lies in the description of 
hydrodynamic forces F and G. This distinction will be dis- 
cussed in detail in a later section, however, in either case, 
the hydrodynamic force is generally described in terms of the 
6 
