Imagine gliding across the water, your boat slicing through waves, while a crystal-clear, three-dimensional map of the underwater world unfolds on your display. That's the game-changing advantage of the StructureScan 3D Stainless Steel Thru-Hull Transducer. Designed for serious anglers chasing trophy fish in both freshwater lakes and punishing saltwater environments, this single thru-hull unit transforms how you locate structure, spot bait schools, and pinpoint game fish hiding in complex bottom contours.

Unlike traditional 2D sonar that leaves you guessing depths and distances, StructureScan 3D's multi-beam sonar technology paints a lifelike picture. It scans up to 600 feet to each side for sidescan imaging and dives 300 feet deep for downscan detail, all while boosting the clarity of your existing StructureScan HD and Downscan views. Whether you're targeting bass around submerged trees or walleye near drop-offs, this transducer puts you steps ahead, reducing search time and maximizing hookups.

Unlock Superior Imaging with Proven Features

• Expansive Coverage: Side-to-side scanning reaches 600 feet per side at 455 kHz, revealing hidden ledges, wrecks, and fish-holding hotspots far beyond your boat's shadow.
• 3D Realism: Experience a real-world view that shows elevation changes, fish arches relative to cover, and precise bottom composition—making split-second decisions intuitive.
• Durable Thru-Hull Design: Crafted from robust stainless steel by Airmar, it's built to withstand harsh marine conditions, including electrolysis and constant submersion.
• Low-Profile Mount: Install flat on the hull or use the included fairing block for optimal performance, minimizing drag even at planing speeds.
• Enhanced Connectivity: 30-foot cable gives flexibility for clean routing to your Lowrance or Simrad display, compatible exclusively with StructureScan 3D modules.

Technical Specs That Deliver Results

Seamless Installation for Peak Performance

Thru-hull mounting offers a cleaner, more stable signal than transom options, especially on larger vessels or at higher speeds. For hulls with 16-24 degree deadrise, this single stainless steel transducer mounts directly or with the provided fairing block to align beams perfectly perpendicular to the waterline. Its low-profile shape reduces turbulence, ensuring sharp images even when pushing 30+ knots.

Pro tip: Position it forward of props and rudders, about 1/4 of the hull length from the bow, for the widest, undistorted views. Pair it with StructureScan 3D modules on HDS or NSS displays for seamless integration—no extra black box needed.

Why Stainless Steel Thru-Hull Beats the Rest

In saltwater fisheries where corrosion is the enemy, stainless steel construction laughs off galvanic action and biofouling. This exclusive Navico design features a triple-beam setup: dedicated port/starboard sidescan plus downscan/3D channels. Anglers report separating baitfish from stripers at 200+ feet, spotting crayfish burrows, and navigating rock piles with confidence—details that flat 2D sonar simply misses.

For steeper deadrise hulls, consider the paired version to maintain balanced imaging. Expect reliable performance backed by a limited 1-year warranty, with easy maintenance: just wipe clean and inspect seals seasonally.

Real-World Wins from the Water

Offshore tuna hunters use it to scan seamounts for kelp patties packed with yellowfin. Inshore redfish pros dial in oyster bars and grass flats, watching tails twitch in 3D relief. Freshwater guides crush smallmouth on points, dialing casts to exact fish positions amid timber. It's not just sonar; it's your underwater eyes, turning hunches into hauls.

What's Included for Quick Setup

• Stainless steel thru-hull transducer
• Fairing block for optimized mounting
• 30-foot cable

Frequently Asked Questions