Water spray is a major contributor to icing of ships and maritime structures. The small size of the droplets in the water spray causes them to easily cool down and freeze to the different structures. Icing can hamper operations on both ships and other maritime structures due to blockage of equipment and slippery deck areas. Besides, if icing occurs on a small ship it is even possible that the increased mass causes the ship to become top heavy, with risk of capsize. De-icing can be costly, dangerous and often both. A better understanding of the spray water forming process can be used to design new structures for minimal ice forming. Reducing the icing on existing structures is also possible by small modifications or optimizing the sailing routes for ships. This in turn can lead to lower operating costs and down-time. In this research the objective was to validate the model of Aalbers en Poen (2015) for the prediction of spray water, in particular the prediction of the droplet mass median diameter. In this model it is assumed that the process of a wave running up against the bow of a ship is comparable to the penetration of water by a wedge. Such a process generates a jet which in turn is expected to breakup in a similar fashion as a jet from a splash plate nozzle. Aalbers and Poen use wave mechanics to determine the immersion velocity of the ship and the dead rise angle between the water and the ship. This information can be used to predict the jet root thickness and the jet velocity with the model of Faltinsen (2002). Both parameters are used as the input for a modified model of Adams (1997) to predict the droplet mass median diameter. Simmons (1977) proposed a distribution that can depict the droplet-size/volume-fraction independent of the spray mechanism. Therefore Aalbers and Poen assumed that this distribution can be applied to their problem. For the validation and verification process tests, for this thesis, have been conducted in the concept basin of MARIN. In the tests a wave was used to produce run-up against a wall to create spray. The waves used had the maximum height possible in the basin and were just feasible to check the model of Aalbers and Poen as intended. This size is significantly larger than that of e.g the splash plates in the original models but still not at full (ship) scale. The tests were performed to study the breakup process and in particular the size and distribution of the formed droplets. An algorithm was developed to extract this data from high-speed recordings of the event. The observed breakup process was different from the process assumed in the model of Adams. Nevertheless, the observed and predicted values for the droplet mass median diameter and jet velocity agree reasonably well. The distribution of Simmons was shown to be applicable. The test setup could not fully verify the usage of Faltinsen's theory because the jet root thickness could not be quantified. However, the observations showed that the assumption of Aalbers and Poen to use Faltinsens's theory is promising.