0.08 0.12 

 Relative Submergence, 



Figure 158. 



Two-dimensional tests on effect of relative depth of 

 submergence, Y /L> an d relative jet power, P , on 

 attenuation of deepwater waves for a hydraulic break- 

 water (after Rao, 1968). 



d =0 - 53 



y 

 -T=0.07 



= jet area at efflux (per foot 

 of width) divided by wavelength 

 dimensionless 



0.03 0.04 0.05 0.06 0.07 0.08 



Incident Wave Steepness, Hj/L^ 



0.09 o.io o. u 



Figure 159. Effect of incident wave steepness, H-/Lj, on effi- 

 ciency, e, for various degrees of attenuation, two- 

 dimensional deepwater wave test, hydraulic breakwater 

 (after Rao, 1968). 



218 



