5sec sinusoidal wave is propagating in deep water. Find the velocity vector and pressure (difference from hydrostatic in the absence of the wave) at a distance 
= 10m from the crest, depth of 1m and the time t=3 sec.
x=10 m, z= -1m, t=3 sec
x10-1.257 x 
x1.257 x 
Note that 
x 
x 
Pressure 
We are asking for 
1,025 x 9.81 x 
x (-0.5565) x 0.85 = -475.6 Pa
Note that 
1,025 x 9.81 x x 0.85 =
854.7 Pa
Q: What if we were asking to find the same quantities 
when the trough of the wave was passing above point A?
A: In this case 
