This paper deals with shock pressure phenomena due to breaking waves acting on sloping faces of sea dykes and other dike revetments. The full-scale investigations were carried out in the new research facility LARGE WAVE CHANNEL in Hannover. Germany. Maximum shock pressure estimations are given for practical slopes 1:4 and 1:6. An extension of the results to steeper and flatter slopes is proposed. For the slope 1:6 the spatial shock pressure distribution and the shock pressure transfer to the subsoil are treated additionally.