97 



Crest of a deep water wave 

 X10-' gauge 1 



-0.4 -0.3 -0.2 -0.1 0.1 0.2 0.3 0.4 



Figure 5.12: Free surface boundary condition errors for a deep 

 water wave at order 4 



Crest of a deep water wave 



V^z 



Stt— _ ._ 



-0.4 -0.3 -0.2 -0.1 0.1 0.2 0.3 0.4 



Figure 5.13: Free surface and velocities at the center of the array 

 for a deep water wave at order 4 



