TideAhead
Published-standard comparison

EPIRB vs. Personal Locator Beacon

A NOAA-source comparison of vessel-associated EPIRBs and person-associated PLBs for 406 MHz distress alerting.

Published August 28, 2026Reviewed August 28, 20262 min read
EPIRBs are designed for maritime use and registered with vessel information. PLBs are portable personal beacons used across outdoor activities. Both must be registered when U.S.-coded.

What We Can Honestly Compare

This page compares documented designs, rules, and operating demands. We did not test individual products, so there are no invented field results or brand rankings here.

Side-By-Side

Best for: Vessel-associated maritime distress alerting.

EPIRB

Advantages

  • Designed for the marine environment and registered with vessel details.
  • Available in manual and float-free arrangements, depending on category and installation.

Limitations

  • Must be correctly mounted, maintained, registered, and reachable for the intended scenario.
  • A vessel-mounted unit may not remain with a separated person.
Best for: A person who needs a portable 406 MHz distress beacon across activities or vessels.

PLB

Advantages

  • Portable and registered to an individual use profile.
  • Can remain on the wearer when properly secured.

Limitations

  • Manually activated and dependent on the person reaching and deploying it.
  • Does not provide the same vessel-centered registration or mounting role as an EPIRB.

Decision

Choose an EPIRB when the primary rescue scenario centers on the vessel and marine deployment; choose a PLB when the beacon must remain with an individual. Some trips justify both roles rather than treating them as exact substitutes.

Registration Is Part Of The Equipment

NOAA says a new or used U.S.-coded 406 MHz beacon must be registered, and ownership or contact changes must be updated. Registration is free and helps rescue personnel interpret an alert.

A beacon with stale ownership, vessel, or contact information has lost part of its safety value. Add the NOAA record to the same pre-trip review as battery and mounting status.

Compare Approved Models, Not Just Names

This page compares beacon roles described by NOAA; it does not water-test individual products. For a purchase, read the official approval, activation category, flotation, mounting, battery, self-test, and service instructions for each candidate.

Neither beacon replaces a VHF voice call or float plan. Build the communication layers around the route, vessel, people, and expected rescue environment.

Original Sources

TideAhead wrote this page as an original practical summary. The factual guidance comes from the named government agencies, instructors, and experienced authors below. Follow the official agency links for current rules and complete safety instructions.

  1. Cospas-Sarsat System Overview

    NOAA Search and Rescue Satellite Aided Tracking · The intended uses of EPIRBs and PLBs and how registered 406 MHz beacons support search and rescue.

  2. Register Your Beacon

    NOAA Search and Rescue Satellite Aided Tracking · Official, free registration for U.S.-coded 406 MHz distress beacons.

Keep Reading

EPIRB or PLB: Start With the Rescue Scenario
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