Unlock Crystal-Clear Underwater Views with Advanced Sonar Technology

Imagine cruising through open waters on your larger vessel, effortlessly spotting fish schools, submerged structures, and drop-offs from hundreds of feet away—both below and to the sides. The Humminbird SSTH 14 HW MSI+ stainless steel thru-hull transducer delivers this precision with MEGA Side Imaging+, MEGA Down Imaging+, and Dual Spectrum CHIRP sonar. Built for serious anglers and boaters who demand top-tier performance, this rugged transducer mounts seamlessly through your hull, providing reliable readings even at higher speeds without the drag of transom-mount alternatives.

Its stainless steel construction withstands harsh marine environments, from salty ocean swells to freshwater lakes, ensuring long-term durability. With a built-in temperature sensor, you'll also track water conditions in real-time, helping you make smarter decisions on lure selection and fishing spots.

Superior Imaging Capabilities for Deeper Insights

This transducer excels in delivering high-resolution images that reveal the underwater world like never before. MEGA Side Imaging+ scans up to 400 feet side-to-side at speeds that keep you moving, while MEGA Down Imaging+ peers straight down to 200 feet with stunning detail. Dual Spectrum CHIRP offers customizable 2D sonar views—switch between wide coverage for searching large areas or narrow beams for pinpoint accuracy, reaching depths up to 1200 feet.

• MEGA Side Imaging+: 1075-1150 kHz for 400ft (122m) range; 800 kHz (790-850 kHz) up to 250ft (76m); 455 kHz (440-500 kHz) up to 800ft (244m).
• MEGA Down Imaging+: 1075-1150 kHz to 200ft (61m); 800 kHz to 250ft (76m); 455 kHz to 400ft (122m).
• Dual Spectrum CHIRP: Full (150-220 kHz), Narrow (180-240 kHz), Wide (140-200 kHz) for versatile 2D sonar up to 1200ft (365m).

These frequencies—83/200 kHz Dual Beam, plus 455/800 kHz and 1.2 MHz—cut through thermoclines and clutter, painting a vivid picture of wrecks, reefs, and bait balls that portable or trolling motor units simply can't match.

Seamless Integration with Your Humminbird Setup

Designed for compatibility with premium Humminbird units, this 14-pin transducer connects directly to all APEX models and SOLIX G2/G3 series featuring MEGA Side Imaging+. For HELIX 8-15 MSI+ G3N/G4N models, a simple adapter cable ensures plug-and-play ease. The 20-foot cable length gives you flexibility in routing to your helm, keeping your installation clean and professional.

Whether you're upgrading from basic sonar or outfitting a new offshore rig, it pairs perfectly with larger displays for split-screen views—Side Imaging on one side, Down Imaging and CHIRP on the other—for unmatched situational awareness.

Built for Big Boats: Why Thru-Hull and Stainless Steel Matter

On larger vessels, transom mounts falter at speed due to cavitation and hull interference. A thru-hull design like this one positions the transducer in undisturbed water for consistent, high-quality returns. The stainless steel stem resists corrosion far better than plastic alternatives, ideal for extended saltwater exposure.

Key advantages include:

• Speed-Resistant Performance: Maintains clear images while planing or trolling fast.
• Rugged Fairing Block: Streamlines water flow to minimize drag and turbulence.
• Temp Sensor Integration: Monitors surface temps to locate baitfish and predict fish behavior.

Perfect for offshore adventures, tournament fishing, or surveying bottom contours—this transducer turns your boat into a sonar powerhouse.

Effortless Installation for Lasting Results

Setting up the SSTH 14 HW MSI+ involves precise hull drilling and fairing block alignment to optimize sonar beams. Use the included stainless steel hardware for a secure, vibration-free mount. Position it forward of props and rudders, ideally amidships, for the cleanest readings. The composite design and waterproof connector simplify wiring, while the fairing ensures laminar flow.

Pro tip: Fair the block slightly upward (5-10 degrees) on stepped hulls to account for trim, maximizing coverage during turns and straight runs.

What's Included for a Complete Package

• High-performance transducer with 20' cable
• Fairing block for optimal water flow
• Stainless steel mounting hardware

Everything you need to elevate your sonar game right out of the box.