What kind of marine safety survival gear do you actually need?
That's the first question. A personal locator beacon won't help the crew see where the boat is going at night, and a man-overboard alarm won't do much if you're looking for a decorative piece of naval history. The four products here each solve a different problem, from LED navigation lights to a purpose-built man-overboard alert system.
Quick take
The ACR AquaLink Personal Locator Beacon PLB-350 is the only personal locator beacon here, listed as a used unit. The Red and Green LED Waterproof Boat Navigation Lights are the lowest-priced option and the only visibility-oriented choice. The sMRT Alert MOB Man Overboard Beacon is the highest-priced item and the only one listed as new. The Vintage Nautical Maritime WW2 Era Wood & Brass Emergency Overboard Buoy Beacon reads as a collectible rather than a working safety device. Prices are in the table below.
Listed price comparison
| Product | Listed price | Price bar |
|---|---|---|
| Red and Green LED Waterproof Boat Navigation Lights | USD 18.59 | |
| ACR AquaLink Personal Locator Beacon PLB-350 | USD 85.00 | |
| Vintage Nautical Maritime WW2 Era Wood & Brass Emergency Overboard Buoy Beacon | USD 169.50 | |
| sMRT Alert MOB | Marine Safety | Man Overboard Beacon | SOS | Emergency | USD 333.33 |
The spread runs from USD 18.59 to USD 333.33.
Decision matrix
| If you want to... | Look at | Why |
|---|---|---|
| Keep your boat visible at night | Red and Green LED Waterproof Boat Navigation Lights | Adhesive backing for curved surfaces |
| Carry a GPS-enabled distress beacon | ACR AquaLink Personal Locator Beacon PLB-350 | GPS and waterproofing |
| Alert the crew if someone goes overboard | sMRT Alert MOB | Marine Safety | Man Overboard Beacon | SOS | Emergency | Compact man-overboard alert |
| Own a nautical display piece | Vintage Nautical Maritime WW2 Era Wood & Brass Emergency Overboard Buoy Beacon | US Navy history and wood-and-brass build |
Product notes
Red and Green LED Waterproof Boat Navigation Lights
At USD 18.59, this is the least expensive listed option in the comparison, and it's the only one focused on visibility rather than distress. The listing describes a strong double-sided adhesive backing that lets you install the lights on rub rails without tools or drilling, and the flexible strip design is meant to follow curved surfaces. It's listed as a running light with an ABS primary material. Choose it when your goal is simple port-and-starboard visibility at this price. It's not an emergency signaling device, and the listing includes a California Prop 65 warning, so weigh those before buying.
ACR AquaLink Personal Locator Beacon PLB-350
The ACR AquaLink PLB-350 is the only personal locator beacon in this group. It's sold as a used unit, and the seller says it shows some regular signs of having been on a boat, though the antenna test produced a blinking light indicating the battery still appears to hold a charge. The unit came from a storage unit, so its history is unknown, and the buyer should confirm they can register it. Reach for the PLB-350 when you want a GPS-equipped distress beacon at a listed price below the other two emergency-oriented units. The tradeoff is that it's used, not new, with no documented service history.
sMRT Alert MOB | Marine Safety | Man Overboard Beacon | SOS | Emergency
At USD 333.33, the sMRT Alert MOB is the highest listed price in this comparison and the only new item among the four. Made by Wescom in the United Kingdom, it's described as a compact and lightweight man-overboard beacon built for sailors, boaters, and watersports enthusiasts, designed to raise the alarm instantly if someone falls overboard so nearby crew can react quickly. The manufacturer part number is MOA-50070, and the sub-type is man overboard beacon. If crew response time is the priority and the listed price fits your budget, this is the one. The flip side is that top listed price, which is the highest in the group.
Vintage Nautical Maritime WW2 Era Wood & Brass Emergency Overboard Buoy Beacon
This USD 169.50 piece sits mid-range, but it's in a different category. The listing describes it as a decorative collectible in decent condition for its age and intended use, and the seller notes there's no idea if it will fire up. It's tied to the US Navy, made primarily of wood with brass accents, and measures roughly 17 inches by 5 inches by 3.75 inches. For a maritime display or a WWII-era naval collection, this piece fits. The limitation is that it's presented for display, with no confirmation of function; it shouldn't be counted on as part of an emergency plan.
Final recommendation
Match the device to the risk. If you want a working distress beacon without the top price, the ACR AquaLink PLB-350 is the personal locator beacon to consider. If the priority is alerting the crew the moment someone goes overboard, the sMRT Alert MOB is the purpose-built man-overboard beacon, carrying the top listed price. For simple night visibility, the navigation lights hold the bottom of the listed price range. And the wood-and-brass buoy beacon belongs on a shelf, not in an emergency kit.
