The i-WaveNET project aims to create an innovative network of sea state observation based on the integration of different technologies, such as HF-radar, seismic sensors, sea level sensors, wave buoys, weather stations. Thanks to the project, the existing network of weather sensors and HF-Radar systems will be integrated with new installations at strategic points in the cross-border area. The data from the installation of the new instruments will be compared and made homogeneous in order to develop a Decisions Supporting System (DSS). This system will allow stakeholders (local and national authorities) to take the strategic decisions necessary for the mitigation of coastal risk linked to potentially catastrophic extreme events in the Area of the Strait of Sicily. Due to climate change, extreme weather-marine events that cause disasters have also intensified in the Strait of Sicily, thus raising the level of risk coming from the sea. The data of the various sea state detection networks currently in operation, both for those near the southern coast of Sicily and for those located near the coasts of Malta, are not exhaustive. The project therefore aims to carry out a cross-border system action useful to mitigate coastal risk.