Simrad B45 Bronze Thru-Hull 9-Pin

Upgrade your vessel's sonar capabilities with the compact yet powerful Simrad B45 Bronze Thru-Hull Transducer. Designed for boaters who demand reliable depth and temperature readings without compromising on performance, this transducer cuts through challenging marine conditions to deliver crisp, accurate data right to your Simrad fishfinder or chartplotter.

Streamlined Design for Superior Water Flow

The B45 stands out with its innovative bronze housing, precision-engineered to slice through water efficiently. By minimizing turbulence and deflecting bubbles away from the active face, it ensures consistent signal quality even in rough seas or high-speed planing. This means fewer false readings and more trust in your on-water decisions, whether you're navigating shallow bays or deep offshore waters.

Dual-Frequency Power: 50/200 kHz Versatility

Equipped with dual 50/200 kHz frequencies, the B45 adapts to any fishing or boating scenario. The wider 50 kHz beam excels in shallow waters and open areas, scanning broad swaths for structure and bait schools. Switch to 200 kHz for pinpoint detail in deeper zones, revealing fish arches and bottom contours with exceptional clarity. Integrated temperature sensing adds another layer, helping you track water columns for thermocline hunting or optimal lure deployment.

Key Technical Highlights

• Bronze construction for corrosion resistance in saltwater environments
• Compact thru-hull stem for easy integration on smaller hulls
• 9-pin Xsonic connector for seamless Simrad compatibility
• Depth performance optimized for vessels up to 25 feet
• High-definition echo returns in varied conditions

Real-World Performance That Boaters Rely On

From weekend anglers targeting coastal reefs to serious offshore cruisers, the B45 proves its worth in demanding scenarios. Its robust build handles the pounding of choppy waves, while the focused acoustics cut through plankton layers and sediment for bottom-lock you can count on. Pair it with Simrad's NSS or NSO series, and you'll unlock enhanced features like ForwardScan compatibility in supported setups, turning your display into a navigation powerhouse.

Effortless Installation for DIY Enthusiasts

Installing the B45 is straightforward, minimizing downtime on your boat. Fair the hull-mounted stem to align perfectly with your boat's deadrise angle—typically 12 to 20 degrees—for maximum efficiency. Use marine sealant around the thru-hull fitting, route the cable cleanly to avoid snags, and connect to your unit's 9-pin port. Pro tip: Position it forward of the prop and keel to dodge interference, ensuring bubble-free operation at all speeds.

Why This Transducer Outshines the Competition

In a sea of generic sensors, the B45 delivers Airmar-quality engineering at an accessible level. Its smaller footprint fits tight transom spaces where larger models can't, without sacrificing power or range. Boaters report sharper target separation and reliable temp data that informs tackle choices, making it a smart pick for trailered boats or upgrades from plastic housings prone to wear.