The EASY project is financed by the INTERREG IIIB - ATLANTIC AREA program. The project strated in January 2007 and has a 18 month duration ending in June 2008. The main goal of this project is to build a Polycentric Infrastructure for operational modelling applied to Maritime Security, which requires the knowledge of the weather conditions, wave climate and surface currents. This infrastructure will provide services to navigation, to rescue agencies - in case of accident - and for coastal management, including protection of shore infrastructures and bathing water quality forecasting. The existence of such a system is also important for early warning in case of a tsunami, which is especially important in the SW coast of Iberia. The main component of the system is a set of models that are complemented by an Ocean Observing System (OOS) and end-user interfaces with bidirectional communication capacities. (...)