significant results. The high seas in which the tests were 

 conducted caused the tensions to fluctuate continuously, so 

 that only a range of tensions could be observed. Ideally,, 

 such a test should be conducted on a smooth sea. The rough 

 seas did, however, remove any doubts concerning the dynamic 

 stability of the system. 



COMPONENT PERFORMANCE 



Towed Elements 



General 



The sea trial served to demonstrate the structural and 

 hydrodynamic adequacy of all elements of the system except 

 for the instrument modules (which were not subjected to 

 maximum hydrostatic or tensile loads), the stops and the 

 cable. The adequacy of the first two components was d«non- 

 strated by other tests, reported in Appendix 1^ however. The 

 cable is certainly adequate for the static loads if the limit 

 placed on the raaximimi allowable static tension is not ex- 

 ceeded? the overall adequacy depends on the maximum dynamic 

 loads expected and will be discussed later. Some minor im- 

 provements to various components were indicated as a result 



of the various developmental tests and the sea trial. 

 Depressor 



Static instability in pitch was observed during tow 

 tests with the original set of horizontal stabilizers. 

 As is explained in Appendix I, this condition was corrected 



32 



