Two indicators concerning
wave impacts were considered: i) the 90th percentile (P90) of the
significant wave height (Hs) distribution (Hs is the average height of
the one-third highest values in a continuous series which is very
commonly used for marine structure design as being a direct indicator of the waves energy); ii) the mean value of wave-induced
current speed Ub, which represents the amplitude of the fluctuating current due to wave.