This deliverable, which was produced as a part of the task 7.2 (Architecture and Design Specifications of S&R) in WP7 (S&R Platform Design, Development and Service Integration) presents the initial reference architecture for Search and Rescue system. The scope of this reports represents the starting point for future project activities, which are mainly aimed for technical and technological tasks, but also for other task types. In this task, the conceptual architecture and detailed specifications of the integrated S&R platform will be derived and documented. The architecture of the S&R platform will describe in detail the integration logic and interfaces between the involved tools and services produced by WP3: Situation Awareness, WP4: Data aggregation, Analysis and Decision Support, WP5: Design and implementation of specialised equipment for first responders, WP6: S&R Component Design & Development