When you're on the water, an emergency beacon can be the difference between a quick crew response and a long wait. But the sMRT Alert MOB and the ACR AquaLink PLB-350 take different approaches. The sMRT is a man-overboard beacon designed to raise an alarm for people nearby, while the ACR is a personal locator beacon with GPS meant to help rescue services find you. This head-to-head helps you decide which one belongs on your boat.
Quick verdict
If you want a new, crew-focused man-overboard alarm that's easy to grab in a crisis, the sMRT Alert MOB is the more direct choice. If you're comfortable with used gear and want a locator beacon with GPS and waterproofing, the ACR AquaLink PLB-350 is the one to look at.
At a glance
| Product | Type | Condition | Key features | Listed price | Price indicator |
|---|---|---|---|---|---|
| sMRT Alert MOB | Man Overboard Beacon | New | Compact MOB alarm; made in UK | $333.33 | |
| ACR AquaLink PLB-350 | Personal Locator Beacon | Used | GPS, waterproof, battery-powered | $85.00 |
Where each product stands out
- For a crew that needs an immediate, obvious alarm: The sMRT Alert MOB is new, compact, and made for the moment someone goes into the water.
- For a portable locator beacon: The ACR AquaLink PLB-350 brings GPS, waterproofing, and battery power to a used unit.
sMRT Alert MOB | Marine Safety | Man Overboard Beacon | SOS | Emergency
Choose this one if you want a brand-new, dedicated emergency alarm that you can grab in the chaos of a man-overboard situation. It is compact and lightweight, and it is designed for use on boats, yachts, RIBs, and sailing vessels. The unit comes from the UK under the Wescom brand and is sold as new, which removes many of the unknowns that come with used safety gear. The main obstacle is the price: it sits at the top of this pairing, so you are paying more for a device whose job is to alert people nearby. For a crew boat that wants one straightforward MOB alarm, that trade-off can make sense. For someone who wants to spend less, it's a hurdle.
ACR AquaLink Personal Locator Beacon PLB-350 Boating Offshore Safety Equipment
Choose this one if you want a personal locator beacon with GPS and waterproof features. The ACR AquaLink PLB-350 is a used unit, so the plastic housing shows regular signs of boat use, and the battery still appeared to hold a charge. That used history is the catch: it came out of a storage unit, and the seller has no information about its past. You also need to be certain the beacon can be registered before relying on it. The GPS function and battery power make it a serious portable option for anyone who accepts pre-owned gear. If you can confirm registration, this is a useful way to add GPS-based rescue capability if you accept used gear.
Final choice by use case
For a sailing skipper outfitting a yacht or RIB with a crew, the sMRT Alert MOB is the more straightforward pick because it's new and designed for a fast on-board response. For a paddler, hiker, or solo boater who wants a locator beacon and is willing to buy used, the ACR AquaLink PLB-350 is the better fit.
