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Airmar's entry-level B117 features a single, 50/200 kHz, dual-frequency, ceramic element in a low-profile bronze housing. The nearly-flush design minimizes drag with only 5 mm (3/16") extending outside of the hull.
Upgrade your boating experience with a transducer that delivers precise depth readings and water temperature data right when you need it. Designed for serious anglers and recreational boaters alike, this low-profile bronze thru-hull sensor mounts flush for a sleek installation while punching through hulls to provide crystal-clear sonar returns. Whether you're navigating shallow bays or probing deep offshore waters, its dual-frequency operation ensures you never miss the bottom or key structure below.
Crafted with boaters in mind, this transducer excels in varied conditions. The higher frequency shines in shallower waters, offering exceptional target separation for spotting fish, wrecks, or drop-offs with sharp detail. Switch to the lower frequency for deeper scenarios, where it maintains reliable bottom lock even in challenging environments like muddy bottoms or heavy currents. This versatility means one unit handles everything from coastal cruising to bluewater adventures, keeping your display fed with actionable intel.
Integrated temperature sensing adds another layer of utility. Track water temp changes to locate bait schools or predict fish behavior patterns, giving you an edge on the water. The bronze construction stands up to constant saltwater exposure, resisting corrosion and maintaining accuracy season after season.
Boat hulls aren't perfect, and this transducer gets that. The included rubber washer conforms to uneven surfaces, letting you achieve a watertight seal without drama. Its right-angle cable exit hugs the hull, minimizing snag risks and fitting tight spaces under decks or in crowded bilges. Low-profile design keeps drag low and your boat's lines clean—no bulky protrusions to foul lines or catch feet.
Compliant with industry safety standards, it installs confidently on planing hulls or sailboats starting around 25 feet. Think powerboats slicing through wakes or sail craft heeling in the breeze—this sensor keeps performing without interference from hull speed or angle.
For years, this model has been the go-to for those who demand reliability without fuss. It pairs seamlessly with compatible marine electronics, feeding clean data to your screen for enhanced charting and fishfinding. Forget fuzzy returns or signal dropouts; users rave about its consistent performance in real conditions, from choppy inlets to calm anchorages.
Maintenance is straightforward too. Periodic hull cleaning keeps it humming, and the durable housing shrugs off impacts from docking or trailering. Invest in gear that matches your passion for the water—precise, tough, and ready for whatever the day brings.
Boat owners appreciate how this transducer integrates into their setup without dominating it. It's not just about the specs—it's about confidence on the water, knowing your depth and temp data is spot-on every trip.
It's ideal for planing hull powerboats and sailboats over 25 feet, providing reliable performance across various hull shapes and speeds.
Yes, it combines depth sensing with an integrated temperature sensor, delivering both metrics simultaneously for comprehensive water column data.
The 200kHz frequency offers detailed shallow-water imaging for fish arches and structure, while 50kHz excels in deeper water for bottom tracking and larger targets.
Absolutely. The low-profile design, rubber washer for irregular hulls, and right-angle cable exit make it user-friendly, with compliance to marine safety standards.
Bronze provides excellent corrosion resistance, ensuring long-term durability and consistent performance in harsh marine environments.
Yes, its streamlined low-profile shape minimizes drag and maintains signal integrity at planing speeds on powerboats.
Regularly clean the face to remove marine growth, check cable integrity, and ensure a secure hull mount to avoid air entrainment.
Ships within 48 hours · Estimated delivery Jul 28 - Aug 2
US$40
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