Since 2010 the AIS-SART (Search and Rescue Transmitter) has been added to GMDSS regulations as an alternative to a Radar SART and has been wheel-marked since 2012. As a Radar SART is designed to only transmit when it detects an incoming radar pulse this dramatically increases the battery life, enabling them to operate continuously for typically over 96hrs. SARTs are supplied with a mounting bracket and must be manually activated once inside the liferaft. When it detects an incoming X-band radar pulse from another vessel or aircraft it automatically transmits a response signal, which appears on the vessel’s radar display as a series of 12 dots pointing to your location. Search and Rescue Transponder (SART) McMurdo S4 Rescue SARTĪ Search And Rescue Transponder (SART) is a Radar based emergency transmitter that is designed to be stored in a liferaft or as a carry on device in the event that it is necessary to abandon ship.
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