EPIRB and SART Operations Flashcards
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On which frequencies does a 406 MHz EPIRB transmit?
Answer: 406 MHz and 121.5 MHz
A 406 MHz EPIRB transmits on 406 MHz for COSPAS-SARSAT satellite detection and on 121.5 MHz as a homing signal for rescue aircraft and vessels.
What is the minimum operating duration required for a 406 MHz EPIRB after activation?
Answer: 48 hours
SOLAS requires a 406 MHz EPIRB to operate for a minimum of 48 hours after activation to ensure adequate time for rescue operations.
What is the primary purpose of the 121.5 MHz signal transmitted by a 406 MHz EPIRB?
Answer: To provide homing guidance for search and rescue units
The 121.5 MHz signal serves as a homing signal, allowing rescue aircraft and vessels to home in precisely on the EPIRB's location once in the general area.
A Category I EPIRB is designed to:
Answer: Float free and activate automatically when the vessel sinks
A Category I EPIRB is mounted in a float-free bracket with a hydrostatic release unit that automatically releases and activates the beacon when submerged to 1–4 meters depth.
Where must a 406 MHz EPIRB be registered?
Answer: With the vessel's flag state administration or its designated authority
EPIRBs must be registered with the flag state administration or its designated national authority so that the 15-digit identification code is linked to the vessel and owner.
What does COSPAS-SARSAT stand for?
Answer: Cosmicheskaya Sistyema Poiska Avariynikh Sudov – Search and Rescue Satellite Aided Tracking
COSPAS is a Russian acronym meaning 'Space System for the Search of Distressed Vessels,' and SARSAT stands for Search and Rescue Satellite Aided Tracking.
How often should a 406 MHz EPIRB be tested using its built-in self-test function?
Answer: Monthly
EPIRBs should be tested monthly using the built-in self-test function, which verifies proper operation without transmitting an actual distress signal on the 406 MHz frequency.
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