95 



Crest of a deep water wave 

 gauge 1 



-0.4 -0.3 -0.2 -0.1 oO.I 0.2 0.3 0.4 



xio"^ gauges 



10 



DFSBC 

 KFSBC 



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



Figure 5.8: Free surface boundary condition errors for a deep 

 water wave at order 2 



Crest of a deep water wave 



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



Figure 5.9: Free surface and velocities at the center of the array 

 for a deep water wave at order 2 



