A wave is propagating in shallow water with length of 36 m. The depth of the water is 1.8 m. The x and y components at point (x, y) at time t are then according to the Airy wave theory:

ur, t) = 0.65 . cos(0.17 . x - 0.71 . t) v(c, y, t) = 0.20 . uth h . sin (0.17 . x - 0.71 . t)