TM 11-5895-1847-12&P
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SEARCH AND RESCUE TRANSPONDER (SART)
The SART is a battery powered transponder used in a lifeboat after an emergency evacuation of a vessel. The signal
from the SART is detected by 9 gHz radar at a range of five to seven miles using the ship's radar. Aircraft radar can
receive the SART signal flying at 3,000 ft at up to 40 nautical miles. Once activated, the SART will rebroadcast a
very strong response to any interrogating radar. At the same time, a line of 12 dots will appear on the search radar
screen, radiating outward from the position of the SART. Once the search vessel or aircraft has approached within one
nautical mile of the SART, these dots widen to eventually form a series of concentric circles around the position of
the SART.
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