£ 0.6 



DEFINITION SKETC H 

 Wave Steepness = 0.02 



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J: 



-o- ! 



O 



-©- 



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•o- 



LEGEND 



O 40 TUBES 

 IZ- -»- 30 TUBES 



-O-K0 TUBES 

 — -©- 10 TUBES 



0.4 06 08 ID 1.2 1.4 



Ratio of Average Tube Length-to-incident Wavelength, U./L. 



Figure 131. Effect of relative breakwater width, L^/L^, and number 

 of tubes on reflection coefficient, C , for open-tube 

 floating breakwater (after Ippen and Bourodimos, 1964). 



*\ 



\ 



■** 



TV 



r> 



40 Tubes 



Water Depth 23" (table SIo) 



L Vl, 



0*i L VL. 



Arr 

 8 



Lt /l, 



Arr. 



R 



0.777 



A 



917 



e 



0.966 



s 



0.583 



A 



0687 



9 



72 5 



rj 



0437 



A 



516 



<B 



0523 



B 



0.318 



A jo.375 



• jo395 



■ 



J _A-« "-?• 



003 0.04 0.05 



Incident Wave Steepness, H./L. 



Figure 132. Effect of incident wave steepness, H^/l^, and relative 



breakwater width, L T /L- 



reflection coefficient, 



for open-tube floating breakwater (after Ippen and 

 Bourodimos, 1964). 



193 



