Vaulting 



Draft to centerline, 

 horizontal pontoon 



Water depth 



0.78 ft 

 4,70 ft 



This model was tested in six different random sea conditions, 

 representing two families of wave spectra. The first family of 

 spectra, designated "A," have their peak ordinate at a wave period 

 of about 0»9 second. The second family, or "B" spectra, have their 

 peak at about 1,55 seconds. Both families for several different 

 significant wave heights are shown in Fig. 7, These two spectra 

 were used in order to adequately excite the model over the range of 

 wave periods of interest. 



0.4 0.8 



PERIOD 



2 1.6 2.0 2.4 



IN SECONDS 



Fig. 7. Experimented tank wave spectra 



1106 



