When the sun goes down or the weather turns, being seen on the water can mean the difference between life and death. That’s why every lifejacket—no matter the vessel, no matter the conditions—should be equipped with a personal locator light. Small, affordable, and often overlooked, these simple devices play a critical role in nighttime or rough-weather rescues.
Here’s why this piece of gear is non-negotiable, what the international standards say, and how to make sure your light is properly installed and functioning when it matters most.
Why a Locator Light Is Essential
Imagine you’ve fallen overboard at dusk. Visibility is fading fast. The crew knows you’re missing—but without a light, even from a short distance, you’re nearly invisible in the waves. Locator lights are designed to solve exactly this problem.
Key Functions of a Personal Locator Light:
- Makes you visible to rescuers at night or in poor weather
- Activates automatically when submerged in water
- Can flash or shine continuously depending on the model
- Increases your chance of being spotted by searchlights, helicopters, or nearby vessels
Even in calm conditions, a person in the water is incredibly hard to see. Add wind, rain, or darkness, and that difficulty multiplies. A flashing light helps rescue teams locate you faster and more accurately.
What SOLAS Says About Lifejacket Lights
The International Maritime Organization (IMO) requires that all SOLAS-approved lifejackets must include a light that:
- Is white in colour
- Automatically activates upon water immersion
- Emits at least 0.75 candelas of light intensity
- Operates continuously for at least 8 hours
These requirements ensure consistency and reliability in rescue situations. If you’re venturing offshore or are part of a commercial vessel crew, having SOLAS-compliant gear isn’t just smart—it’s the law.
🔗 Look for certified options from trusted manufacturers like UML and ACR Electronics.
Types of Lifejacket Lights
1. Water-Activated Lights
These switch on automatically when they come into contact with water—no action needed from the wearer.
2. Manual Lights
Must be turned on by the wearer. They offer control, but require presence of mind during an emergency.
Where and How to Install Them
Correct placement ensures your light is visible above water even if you’re unconscious and face-up. Most lights come with clips, straps, or toggles to attach securely to your lifejacket.
Installation Tips:
- Mount near the shoulder for maximum above-water visibility
- Ensure it doesn’t interfere with inflating bladder or spray hood
- Regularly test the light and replace batteries as per the manufacturer’s instructions
- Register or log model and battery expiration dates as part of your safety checklist
Combine with Other Signaling Gear
While lights are critical, consider pairing them with:
- Reflective tape for daytime visibility
- Whistles for audio signaling
- PLBs (Personal Locator Beacons) for global emergency alerts
Final Thoughts
Personal locator lights are compact, inexpensive, and profoundly effective. In the worst-case scenario—falling into the water alone, at night, in rough seas—it’s often your only beacon to the outside world.
If you haven’t added one to your lifejacket, now is the time. Light it up—and stay seen, stay safe.