Recurved walls are used to reduce wave overtopping over breakwaters. However, the mechanisms determining their effectiveness in terms of reducing the overtopping rate are complex and not yet fully described. Most of the available equations for overtopping rate estimations correlate only to the relative freeboard Rc/Hm0, neglecting other influencing parameters. However, in our study and also previous studies it was observed that the effect of other influencing parameters like wave period and water depth at the toe of the breakwater becomes more significant when a recurve is added to the top of the breakwater or revetment. In this research, the effect of these parameters on wave overtopping rates is investigated for vertical walls with recurve on top. For this study, data from the so-called SABAII project (a commercial port study for the Caribbean Island SABA) conducted at Ghent University and a part of the EurOtop database are used.
