🔍 Key Concepts

• EPIRB (Emergency Position-Indicating Radio Beacon) design and built‑in self‑test features • Difference between operational activation (real distress) and self‑testing (maintenance check) • What kind of indicator is normally provided on modern GMDSS EPIRBs for testing

💭 Think About

• Look at each choice and ask: does this sound like how a modern, SOLAS‑compliant EPIRB is realistically and safely tested in normal practice? • Would a proper EPIRB test require transmitting a real distress alert or involving a Rescue Coordination Center, or is there a safer, localized method? • Does an EPIRB usually require external test equipment, or does it contain its own built‑in method to confirm it is working?

✅ Before You Answer

• Verify that EPIRB tests are designed to avoid sending a real distress signal during routine checks • Check which option mentions a built‑in test function rather than external tools or contacting shore authorities • Eliminate any option that would require full activation of the beacon or coordination with an RCC just to run a routine test