BPS Marine BPS-6 6-Transducer 12V Ultrasonic Antifouling System

Marine growth is a slow, expensive problem. Slime first, then barnacles, then a hull that drags and burns more fuel every trip. The BPS Marine BPS-6 goes after that problem before it starts. It's a six-transducer ultrasonic antifouling system that runs on 12V DC and keeps microorganisms from getting a foothold on your hull, drives, rudders, and stabilizers.

Here's the idea. Each transducer bonds to the inside of the hull and sends out ultrasound in a multi-frequency sweep from 20kHz to 42kHz. That sweep disrupts the ability of algae and barnacle larvae to attach to the wetted surface. No poisons leaching into the water, no scrubbing at the end of the season, just a quiet defense running in the background while the boat sits at the dock.

One BPS-6 covers a lot of boat. It's rated for hulls up to 65 feet, and it's a clean fit for vessels under 52 feet running pods or stern drives where a single system can protect the whole running gear package. Got something bigger? You can combine multiple BPS-6 systems to cover a larger vessel. Six transducers give you enough coverage to reach the surfaces that actually foul, the flat hull sections, the drives, the rudders, and the stabilizer fins.

Power draw is easy to live with. The system runs on 12V DC and pulls about 1.5 Ah on average, so it won't hammer your house bank while you're away from shore power. Each transducer pushes up to 60W of output, which is where the real antifouling work happens. On a sailboat or a boat that sits on the hook for stretches, keep an eye on your battery. A small solar panel or a shore charger will keep it fed indefinitely.

Install is straightforward if you take your time with the bonding. The transducers mount to clean, solid interior hull surfaces using the two epoxy kits in the box. That solid epoxy bond matters. Ultrasound travels through the hull material itself, not across a gap, so it won't jump a barrier like sealant or caulk. Get good contact and you get good coverage. Each transducer comes with 15 feet of cable, and there are three extra 15-foot extension cables in the box for the runs that need to reach a far corner of the bilge back to the control module.

The BPS-6 works best on solid fiberglass hulls where the ultrasound can transmit cleanly through the laminate. Cored hulls and metal boats behave differently, so check the installation manual and pick your mounting locations before you commit the epoxy. The printed installation and operation manual walks through transducer placement, and getting that placement right is most of the job.

Everything you need to get running is in the box. You get the BPS-6 control module with an integrated power cable, six submersible ultrasonic transducers each with 15 feet of cable, three additional 15-foot extension cables, two epoxy kits for bonding, and the printed installation and operation manual. The control module is the brain. It drives all six transducers off a single 12V connection and runs the frequency sweep automatically once it's powered.

A cleaner hull isn't just about looks. Less growth means less drag, and less drag means better fuel economy and less strain on your engines when you're underway. It also means fewer haul-outs and less aggressive scrubbing, which is easier on your bottom paint and your wallet over a season. For a boat that lives in the water, an ultrasonic system like the BPS-6 is the kind of quiet maintenance that pays for itself the longer it runs.

Who's it for? Boaters tired of hauling out for a bottom scrub, cruisers who want to slow growth between seasons, and anyone running pods or stern drives who wants one system watching the whole underwater package. It's not a magic eraser, and it won't strip existing growth off a neglected bottom. Think of it as prevention, running around the clock, that keeps a clean hull clean and slows the whole fouling process way down.