EPIRBs

An EPIRB (Emergency Position Indicating Radio Beacon) is a vessel's most critical survival tool for offshore or coastal cruising. When activated, it transmits a high-power 406 MHz distress signal to the international Cospas-Sarsat satellite network, providing search and rescue (SAR) teams with your identity and precise location anywhere on Earth.

EPIRB technology has advanced significantly, moving beyond simple satellite pings to become integrated communication hubs.

Tech Standards: The "Triple-Threat" Beacon

The latest generation of EPIRBs (like the ACR GlobalFix V5 and Ocean Signal EPIRB3) now includes three life-saving technologies in a single unit:

1. 406 MHz Satellite Link: Notifies global rescue coordination centers.²

2. Built-in AIS (Automatic Identification System): Simultaneously broadcasts your distress location to all nearby vessels equipped with AIS.³ This allows a boat just 2 miles away to see you on their chartplotter and rescue you before the Coast Guard even arrives.]

3. RLS (Return Link Service): Provides a blue light confirmation on your beacon, letting you know the satellites have successfully received your distress signal. This "handshake" significantly reduces survivor stress.

Choosing the Right Category

Important: Registration is Mandatory

In 2026, you are legally required to register your EPIRB with your national authority (such as NOAA in the USA). Registration is free and provides rescuers with your boat's description, emergency contacts, and medical info. Failure to update your registration every two years can delay rescue times.