The SA70 AIS-SART is developed by Simrad to meet the rules and regulations for use on vessels and life rafts in the maritime service. SA70 AIS-SART meets the specifications for use in search and rescue operations at sea. The operating range of the SA70 AIS-SART is 7 -10 nautical miles from vessel AIS Class-A, and more than 40 nautical miles from an airborne AIS receiver. SA70 AIS-SART is buoyant, however to obtain maximum performance, the unit should be placed in a vertical position and as high up as possible in order to achieve maximum coverage. Several mounting brackets and mounting aids are available to ensure correct mounting and use of the radar unit. The purpose of the SA70 AIS-SART is to perform a secondary alarm when search and rescue units are searching for a life raft / lifeboat in distress. The SA70 AIS-SART includes a built-in GPS, which will help the units to pinpoint exactly where the distressed boat is located in a larger area. This is done with the help of the AIS on the searching ship or helicopter. When started, the SA70 AIS-SART sends its position data in an ordinary AIS message. In addition the SA70 AIS-SART sends a safety text message every forth minute, containing text: “AIS SART”. This will be received by other AIS systems within the range. The batteries of the SA70 AIS-SART will last at least 96 hours when activated.