A SART's signal cannot be detected:
Official USCG Answer & Rule Citation
Correct Answer: Option C — By a search vessel's 10 cm Radar.
SARTs are specifically tuned to the 9 GHz X-band frequency. Because 10-cm (S-band) radars operate at a different frequency, they cannot detect the SART's signal. This limitation is a critical operational factor for search and rescue coordinators when selecting radar equipment for locating survival craft.
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