Raymarine RSW Wired Transducer Only (R70941)

If you're running the Raymarine RSW Wired Smart Wind system and your masthead sensor has taken a hit, this is the part you need. The RSW Wired Transducer Only, part number R70941, is the replacement wind transducer for that system. It's the same professional-level sensor Raymarine ships in the complete RSW Wired package, sold on its own so you don't have to buy the whole kit again just to get your wind data back.

Let's be clear about what this is up front. This listing is the transducer, not the full package. The complete RSW Wired kit comes with the mounting arm and a long run of cable down the mast. If you've already got that arm and cable up there and they're in good shape, this is the smart, less expensive way to replace a failed or damaged sensor. If you're starting from scratch on a new install, you'll want the complete package instead. When in doubt, give us a call and we'll sort out exactly which piece you're after.

The RSW is Raymarine's smart wind transducer, and it earned its reputation among sailors for a reason. It delivers highly accurate, calibrated wind speed and direction data, the kind of clean numbers you actually trust when you're trimming for that last tenth of a knot. Whether you're club racing on a Wednesday night or cruising the coast, good wind data is the difference between sailing the boat well and guessing.

Here's the part that makes the wired RSW a pleasure to install. It's a native NMEA 2000 device. On a Raymarine boat that means it drops straight onto your SeaTalkng backbone. The cable runs down the mast and connects to the network, and you don't need an ITC-5 analog converter the way older wind vanes did. One less box at the base of the mast, one less connection to corrode. Your wind speed and angle show up on any compatible display on the network, from an i70S instrument to an Axiom multifunction display at the helm.

Mounting is standard masthead work. The transducer sits at the top of the mast where it gets clean, undisturbed air, and the single thing that matters most is alignment. Set it square to the boat's centerline. Get that right and your wind angle is honest across both tacks. Get it sloppy and you'll be chasing a calibration offset all season. Once it's up and wired in, you calibrate through the wind menu on your connected display, zero it to centerline, and you're reading true.

A few words from experience on making it last. Masthead gear lives the hardest life on the boat. It's exposed to salt air, UV, and the constant micro-vibration of a rig under load. When you make up the connection, a dab of dielectric grease on the pins and a wrap of self-amalgamating tape over the mated connector goes a long way toward keeping salt out. Snug your fasteners properly and check them when you're up the mast for other work. Treat it right and this sensor will give you years of solid service.

Who's this for? Any sailor who already runs the RSW Wired system and needs a clean replacement transducer without repurchasing the arm and cable. It's also the right call if a bird strike, a halyard wrap, or a hard knock took out your masthead unit and everything else in the run is fine. It isn't a speed or depth sensor, and it isn't a wireless unit. It's the wired wind transducer, and it does that one job extremely well.

Every unit we ship is genuine Raymarine with the full manufacturer warranty behind it. We're an authorized Raymarine dealer, so if you ever need to make a claim, it runs through us. Order before 3 PM Eastern on an in-stock day and it goes out the same day, so you can be back to full instruments by the weekend.