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SECTION I 

 RESULTS OF EXPERIMENTS IN REGULAR WAVES 



I - NOMENCLATURE - 



1,1- Characteristics of buoys - 



The notations concerning the buoys characteristics are 



given in Figures 2 and 3 . Furthermore we have : 



m Mass of buoy 



Iyy Moment of inertia around a transversal axis passing 



through the center of gravity G of the buoy 



I Iyy 



Kyy =/ ~ Transversal radius of inertia 



The moment of inertia is preferably defined as the non 



dimensional ratio 



Kyy 



L HT 



f 



1,2 - Regular waves (Figure 4) - 



The waves are supposed to be regular and with one only 

 direction of propagation 



O x y z Fixed systems of axis 

 o o o o 



O x y Free surface at rest 



o o o 



O x Axis in the direction of propagation of the waves 



o o 



O z Vertical downward axis . 



o o 



The wave elevation at point O is then defined by : 



r (t) = f cos 2 7r ft = P cos a t 

 A A 



f Wave frequency in Hz 



? Half wave amplitude 



A 



f Wave height 



<T Circular frequency 



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