The AIS-SART is a self-contained radio device used to locate a survival craft or distressed vessel by sending updated position reports using a standard Automatic Identification System (AIS) class-A position report. The position and time synchronization of the AIS-SART are derived from a built in GNSS receiver (e.g. GPS). GMDSS installations include one or more search and rescue locating devices. AIS-SART (AIS Search and Rescue Transmitter)