 SAROPS is made up of the Graphical User Interface (GUI), the Environmental Data Server (EDS) and the Simulator (SIM).The Graphical User Interface uses the Environmental Systems Research Institute (ESRI) Geographic Information System (ArcGIS) and has been altered to include U.S. Coast Guard specific applications such as the SAR Tools Extension and SAROPS Extension.The applications have a wizard-based interface and work within the ArcGIS layered environment.