Question 1

During your oral exam you are asked: what is an EPIRB, how is it activated, and what information is transmitted when it activates?

Accepted Answer

An EPIRB (Emergency Position Indicating Radio Beacon) is a distress beacon that, when activated (either manually or automatically upon release from its bracket in a sinking scenario via a hydrostatic release unit), transmits a distress signal via satellite containing the vessel's unique identification (MMSI-derived) and, for GPS-equipped models, the vessel's position, alerting search and rescue authorities EPIRBs operate on 406 MHz via the COSPAS-SARSAT satellite system, providing global coverage independent of the vessel's own power or communication systems, which is critical in a total loss scenario. The hydrostatic release unit ensures automatic activation if the vessel sinks before manual activation occurs, and GPS-equipped EPIRBs (now standard on most modern units) significantly reduce the search area for SAR assets by transmitting position data along with vessel identification, dramatically improving response times compared to identification-only beacons.

Question 2

You need to send a distress alert because the vessel is taking on water faster than the pumps can cope. Which message format and channel/priority is correct?

Accepted Answer

A "Mayday" distress call on Channel 16 / DSC distress alert, giving position, nature of distress and assistance required Grave and imminent danger requiring immediate assistance (e.g. uncontrolled flooding) requires a Mayday distress call / DSC distress alert — Pan-Pan is for urgency without immediate danger to life, and Securité is for navigational safety information.

Question 3

True or False: An EPIRB should be registered with the relevant national authority, and the registration details kept up to date so that a false alarm can be quickly resolved or a real activation correctly attributed.

Accepted Answer

True True. EPIRB registration links the unique beacon ID to vessel and contact details, allowing SAR authorities to quickly verify activations (genuine or false) and contact the vessel/owner — unregistered or out-of-date beacons slow down the SAR response and waste resources.