Nautical Term: SART
Definition of SART
Search and Rescue Transponder (SART). A SART is a self-contained, waterproof radar transponder specifically designed for emergency use at sea. The SART functions by transmitting a series of radar dots on a rescuing ship’s radar display. These dots are only visible to a 9 GHz X-band (3 cm wavelength) radar. It is important to note that a SART will not be seen on S-band (10 cm) or other radar.
Example: During a routine patrol, the Coast Guard received a distress call from a fishing vessel located in the Bering Sea. The fishing vessel reported that they were taking on water and requested immediate assistance. The Coast Guard dispatched a rescue team and a helicopter to the location of the distressed fishing vessel. Upon arrival, the rescue team discovered that the fishing vessel had already sunk. However, they were able to locate the survival craft (life raft) that had been launched from the fishing vessel before it sank. The rescue team activated the SART (Search and Rescue Transponder) that was located on the life raft. The SART began transmitting a series of radar
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