Ocean Signal has published updated guidance for owners carrying 406MHz emergency beacons, covering how the Cospas-Sarsat system works and why registration details matter. The guidance applies to equipment such as EPIRBs and personal locator beacons used by recreational boaters.
A 406MHz beacon sends a coded distress alert that can be detected by the international Cospas-Sarsat satellite network and routed to rescue authorities. Registration does not make the radio signal travel faster, but it gives responders information about the owner, vessel and emergency contacts attached to the beacon identity.
Registration adds context to a distress alert
Ocean Signal says current registration details can help rescue coordinators understand what type of vessel or activity may be involved. Emergency contacts may also help confirm whether an activation is likely to be genuine and provide useful information before rescuers arrive.
The company also stresses the importance of updating records when a beacon is sold or transferred. A working beacon linked to an old owner can create avoidable delays and confusion during an emergency response.
UK rules changed during 2026
The guidance notes a UK requirement effective from 15 April 2026 covering PLBs carried aboard UK-flagged vessels, hovercraft and mechanically propelled watercraft such as personal watercraft. Owners operating under UK rules should check the current Maritime and Coastguard Agency registration requirements for their exact equipment and craft.
Ocean Signal also points to the scale of false alerts, noting MCA figures showing that most UK 406MHz alerts recorded in 2024 were not genuine distress events. Correct handling, storage and cancellation procedures therefore matter as much as buying the beacon itself.
Routine checks remain part of normal preparation
Owners should verify the beacon registration, emergency contacts, battery or service date and operating instructions before relying on the unit. The beacon also needs to be stored where it can be reached quickly rather than buried beneath gear in an emergency.
For LBG readers, the practical lesson is that a beacon is not a fit-and-forget accessory. Registration, ownership records and routine checks are part of the safety system, and they should be reviewed alongside lifejackets, radios and other emergency equipment before a trip.