EPIRB and SART Operations Flashcards
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Read the first 7 EPIRB and SART Operations flashcards as text
What information is encoded in a 406 MHz EPIRB's distress transmission?
Answer: A unique 15-digit identification code linked to the vessel and owner
The 406 MHz signal encodes a unique 15-digit beacon identification number that is linked to the vessel and owner through national registration databases, enabling authorities to identify the vessel without voice contact.
If a vessel's EPIRB is accidentally activated, what is the immediate required action?
Answer: Immediately notify the appropriate rescue coordination center to cancel the false alert
Accidental activations must be reported immediately to the nearest rescue coordination center or coast guard to cancel the false alert and prevent unnecessary search and rescue operations from being launched.
What is the function of the hydrostatic release unit (HRU) fitted to a Category I EPIRB bracket?
Answer: It automatically releases and floats the EPIRB free when submerged to 1–4 meters depth
The HRU is a pressure-sensitive device that releases the EPIRB from its mounting bracket when submerged to 1–4 meters, allowing it to float free and auto-activate if the vessel sinks rapidly.
How many SARTs are typically required under SOLAS GMDSS regulations on most cargo ships?
Answer: Two, placed in survival craft
SOLAS requires most vessels to carry at least two SARTs, which are to be stored in survival craft so that survivors have access to a SART regardless of which side of the vessel is abandoned.
How does an AIS-SART differ from a traditional radar SART?
Answer: AIS-SARTs transmit their position as an AIS target visible on AIS-equipped displays
An AIS-SART transmits a distress position message on AIS frequencies (161.975 MHz and 162.025 MHz), appearing as a vessel target on AIS-equipped receivers and chart displays rather than on radar.
When must the battery of a 406 MHz EPIRB be replaced?
Answer: After any activation or when the battery's marked expiration date has passed
EPIRB batteries must be replaced after any activation (even brief or accidental) or before the marked expiration date expires, whichever occurs first, to guarantee full capacity during a real emergency.
Which GMDSS sea area covers polar and remote regions beyond INMARSAT geostationary satellite coverage?
Answer: Sea Area A4
Sea Area A4 encompasses polar and extreme remote regions not covered by INMARSAT geostationary satellites (approximately above 76°N and below 76°S), where HF radio and 406 MHz EPIRBs via COSPAS-SARSAT are the primary distress systems.
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