How to Register an EPIRB and Why It Matters in the Florida Keys
When you’re boating offshore in the Florida Keys, an EPIRB (Emergency Position Indicating Radio Beacon) can be one of the most important pieces of safety equipment onboard.
Whether you’re heading to the Dry Tortugas, crossing to the Bahamas, or spending the day offshore fishing, an EPIRB can quickly alert search and rescue authorities and provide your exact location when every minute counts.
This guide explains what an EPIRB does, how it differs from other emergency beacons, when it’s recommended, and how to properly register and maintain it.
What Is an EPIRB?
An EPIRB is an emergency distress beacon that transmits a 406 MHz signal to the international COSPAS-SARSAT satellite rescue system.
When activated, it sends emergency responders:
Your unique beacon identification
Your GPS location (on GPS-equipped models)
Information linked to your NOAA registration
This allows the U.S. Coast Guard and search-and-rescue agencies to identify your vessel and begin a response much faster than if they received an anonymous distress signal.
Unlike a VHF radio, an EPIRB does not provide two-way communication—it simply alerts rescuers that you’re in distress and tells them where to find you.
EPIRB vs. PLB vs. SART
Several emergency devices serve different purposes, and it’s important to understand the difference.
EPIRB (Emergency Position Indicating Radio Beacon)
Registered to a vessel
Global satellite coverage
Automatic or manual activation (depending on model)
Designed for vessel emergencies
PLB (Personal Locator Beacon)
Registered to an individual
Manual activation only
Worn on a life jacket or harness
Ideal for crew members or solo boaters
SART (Search and Rescue Transponder)
Used after rescuers are already searching nearby
Helps rescue vessels and aircraft locate your life raft
Does not alert satellites
For offshore boating, many experienced mariners carry one EPIRB for the boat and one PLB for each crew member.
When Is an EPIRB Required?
For most recreational boats, federal law does not require an EPIRB.
However, it’s strongly recommended for:
Dry Tortugas trips
Bahamas crossings
Gulf Stream crossings
Offshore fishing
Extended offshore cruising
Commercial fishing vessels and many commercial passenger vessels operating offshore are required to carry approved EPIRBs.
Even when not legally required, an EPIRB is considered essential safety equipment for anyone boating well beyond reliable VHF radio range.
Category I vs. Category II EPIRBs
There are two primary types of marine EPIRBs.
Category I
Category I units are mounted in a hydrostatic release bracket.
If the vessel sinks, the bracket automatically releases the beacon, allowing it to float to the surface and begin transmitting without crew intervention.
These are the preferred choice for offshore cruising and commercial vessels.
Category II
Category II units require someone onboard to manually remove and activate the beacon.
While they offer reliable emergency signaling, they depend on the crew having enough time to deploy the unit.
For serious offshore boating, a Category I EPIRB provides the greatest level of protection.
How to Register Your EPIRB
Registering your EPIRB with NOAA is:
Free
Required
Takes only a few minutes
Visit the NOAA 406 MHz Beacon Registry and provide:
Beacon identification number
Vessel information
Contact information
Emergency contacts
Primary operating area
Once complete, print your registration confirmation and keep it with your vessel records.
Whenever ownership, vessel information, or contact information changes, update your registration promptly.
Why Registration Matters
A registered EPIRB allows rescue coordinators to immediately identify:
Your vessel
Boat description
Home port
Typical crew size
Emergency contacts
Without registration, responders receive only an anonymous distress signal, potentially delaying rescue while they determine who needs assistance.
Registration is one of the simplest—and most important—steps you can take to improve your safety offshore.
Battery & Maintenance
An EPIRB is only useful if it’s ready to work.
Regularly verify:
Battery expiration date
Self-test results
Physical condition
Registration status
Most batteries require replacement every 5–6 years, depending on the manufacturer.
Battery replacement should generally be performed by an authorized service center.
Hydrostatic Release Units (HRUs)
Category I EPIRBs use a Hydrostatic Release Unit (HRU) to automatically free the beacon if the vessel sinks.
Most HRUs require replacement approximately every two years.
If the HRU has expired, your Category I beacon may no longer deploy automatically, reducing its effectiveness during an emergency.
Check both the EPIRB battery expiration and HRU expiration during routine maintenance.
Why EPIRBs Matter in the Florida Keys
The Florida Keys offer incredible boating opportunities—but many destinations are well beyond cellular coverage.
Dry Tortugas
Located roughly 70 nautical miles west of Key West, the Dry Tortugas has:
No fuel
No repair facilities
Limited communications
Long rescue response distances
An EPIRB provides an immediate satellite distress alert should an emergency occur.
Bahamas Crossings
Crossing the Gulf Stream places boaters in open-ocean conditions where weather can change rapidly and VHF radio coverage may be limited.
A properly registered Category I EPIRB is considered standard safety equipment for these crossings.
Offshore Fishing
Many offshore fishing grounds lie 10–20 miles or more from shore.
Mechanical failures, severe weather, or collisions can quickly turn a routine fishing trip into an emergency.
An EPIRB helps ensure rescuers know exactly where to begin searching.
Choosing the Right EPIRB
When selecting an EPIRB, look for:
Integrated GPS
406 MHz satellite transmission
Category I automatic deployment (for offshore use)
Current battery certification
NOAA registration capability
Avoid purchasing older units with outdated batteries or models lacking GPS capability.
EPIRB Accessories
In addition to the beacon itself, many offshore boaters should also carry:
Hydrostatic Release Unit (HRU)
Float-free mounting bracket
Personal Locator Beacons (PLBs)
Offshore life raft
SOLAS-approved flares
Together, these items create a layered emergency response system that improves survivability offshore.
Find the Right EPIRB at Key West Marine Hardware
Key West Marine Hardware carries a variety of offshore emergency equipment, including:
Category I and Category II EPIRBs
Personal Locator Beacons
Hydrostatic Release Units
Mounting brackets
Offshore safety equipment
Emergency signaling devices
Our knowledgeable staff can also help you understand registration requirements, battery replacement schedules, and selecting the right beacon for your boating plans.
Visit Key West Marine Hardware at 818 Caroline Street, Key West, FL, call (305) 294-3425, or stop by before your next offshore adventure.
Frequently Asked Questions
Is EPIRB registration free?
Yes. NOAA registration is completely free and only takes a few minutes.
Do recreational boats need an EPIRB?
Federal law generally doesn’t require one, but it’s strongly recommended for offshore boating, including trips to the Dry Tortugas, Bahamas, and Gulf Stream.
What’s the difference between an EPIRB and a PLB?
An EPIRB is registered to your vessel, while a PLB is registered to an individual and carried on your person.
How often should I replace my EPIRB battery?
Most manufacturers recommend replacement every five to six years. Always follow the expiration date printed on the beacon.
Can I use the same EPIRB on multiple boats?
You can, but your NOAA registration should always reflect the vessel currently using the beacon. Updating your registration whenever vessel information changes helps ensure the fastest possible rescue response.