InterRisk addresses the need for better access to information for risk management in Europe, both in cases of natural hazards and industrial accidents. There are 14 European partners in the project (see DOW). The overall objective is to develop a pilot sy stem for interoperable GMES monitoring and forecasting services for environmental management in marine and coastal areas. The InterRisk pilot will consist of an open system architecture based on established GIS and web services protocols, and and will be implemented for several European regional seas. The InterRisk services will include basic services (satellite data, in situ data, model simulations, metadata catalogues) and complex services such as oil drift prediction and ecosystem modelling. The servic es will be based on data and numerical models needed to monitor and forecast marine environmental degradation and crisis events. In order to enable data and metadata harmonisation between different service providers, InterRisk will develop ontologies and application schemas for the targeted application domains (oil spills, harmful algal blooms, eutrophication and environmental degradation). The InterRisk pilot will be developed and integrated by a group of service providers in the consortium. It will be v alidated by users responsible for crisis management in case of oil spills, harmful algal blooms and other marine pollution events, in Norwegian, UK/Irish, French, German, Polish and Italian coastal waters. The network of InterRisk services will be embedde d in the ESA Service Support Environment (SSE), which will provide the underlying infrastructure for the InterRisk system. Incremental development of services and SSE components will be used to facilitate rapid feedback from users and service providers, l eading to improved products and services that can be sustained after the project. InterRisk will be user driven, INSPIRE compliant and it will contribute to the implementation of GMES and GEOSS.