For further validation of the prediction models, the following 

 experiments are recommended: 



1. Responses to horizontal motion input, which, when 

 coupled with the vertical motion results, complete the 

 description of the motional input expected from the 

 buoy in a seaway, 



2. Experiments with scope-to-depth ratios greater than 

 1.3 to determine the effects of scope on the dynamic 

 load responses , 



3. Experiments at several amplitudes of motion to determine 

 effects of amplitude on dynamic load responses and to 

 provide data for simulation of dynamic responses to 

 motions of a buoy in a seaway with a spectrum of fre- 

 quencies and amplitudes. For more accurate measure- 

 ments, such experiments should use more sensitive load 

 cells (within the state-of-the-art) placed at both too 

 and bottom and full movie coverage of the mooring line 

 with a background grid to measure motion. 



4. Repeat experiments reported here with more accurate 

 instrumentation to minimize uncertainties. 



Once validated, the moorinq dynamics prediction technique should 

 be combined with the buoy motion model of Peference (3) to predict the 

 actual responses of prototype moorings in realistic seaways and currents 

 to assess such characteristics as maintenance of station and survivability. 



49 



