T5" 2.0 



Ratio of Wavelength-to-Water Depth, L/d 



Figure 30. Effect of relative submergence, d /d , and relative water 

 depth, L/d, on transmission coefficient, C t , of double- 

 pontoon floating breakwater (after Ofuya, 1968). 



0.7 



06 



'05 





V 





1 





1 



1 



\ 













- 



\ 















\ 



\ 



d 2 /d ( =0.32 \ 



\, 















\ 

 \ 



s \ 0.44 















— -X\ 





N 



^ ^ 







1 





1 



^ . \ 





1 



0.6 0.7 0.8 



Ratio of Natural Period of Structure to Wave Period, T /T 



Figure 31. Effect of natural period increase of oscillation on 

 transmission coefficient, CL , of double-pontoon floating 

 breakwater (after Ofuya, 1968). 



63 



