Commercial Shark Fishery Observer Program
Observer Training
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EPIRBS
406 MHz EPIRB
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The Emergency Position Indicating Radio Beacon (EPIRB) is a small battery-powered device that is
carried onboard boats. Vessels operating on the high seas (beyond the 3 mile territorial line) are
required to carry a 406 MHz EPIRB. Although there are different types of EPIRBs, all will float and
continue to send a signal for 48 hours. The EPIRB must be tested when it is installed and at least
once every month. For more detailed information regarding EPIRBs and registration with NOAA, please
see the U.S. Coast Guard web site.
When activated, the EPIRB sends a signal to satellites orbiting the earth. The satellite then transmits
the signal from the emergency beacon to a land-based station. Personnel at the station determine the
EPIRB's position based upon the signal and deploy emergency response team.
EPIRB-Satellite Emergency Response System courtesy NOAA
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