Discover the Power of Crystal-Clear Underwater Visibility

Imagine gliding through open waters with a vivid, real-time 3D map of the seafloor, fish schools darting in sharp detail, and hidden structures popping into view without guesswork. That's the edge the Raymarine RV-400 stainless steel thru-hull transducer delivers to inboard and outboard powerboat owners. Crafted for those who demand precision in every outing—whether chasing trophy fish or navigating tricky shallows—this all-in-one sensor transforms your display into a window to the underwater world.

Unlike traditional sonar that flattens the ocean floor into vague lines, the RV-400's RealVision 3D technology renders life-like images by blending multiple sonar modes. Boat motion? No problem. Its integrated attitude and heading reference system (AHRS) keeps imagery steady, filtering out the chaos of waves and turns for consistently reliable views.

Advanced Sonar Technologies Packed into One Rugged Unit

The RV-400 stands out as a 4-channel powerhouse, harnessing Wide Spectrum CHIRP across DownVision for pinpoint bottom detail, SideVision for wide-area scanning up to hundreds of feet on each side, conical CHIRP for targeting individual fish, and RealVision 3D for immersive modeling. A fast-response water temperature sensor rounds it out, giving you instant data to track thermoclines where baitfish—and predators—gather.

• RealVision 3D: Photo-realistic sonar that reveals wrecks, drop-offs, and bait balls in stunning 3D clarity.
• DownVision & SideVision: High-definition imaging straight down and to the sides, perfect for structure fishing.
• Conical CHIRP: Traditional fish arches with exceptional target separation at depths up to 300 feet or more.
• AHRS Stabilization: Automatic compensation for heave, pitch, roll, and yaw ensures rock-solid sonar even in choppy conditions.

Built from durable stainless steel, it thrives in fiberglass, wooden, or metal hulls. The 0° offset suits flat-bottom boats perfectly, while the low-profile design minimizes drag and cavitation—ideal for speed-conscious skippers or trailered vessels that need hassle-free beaching.

Effortless Installation for Real-World Boating

Setting up the RV-400 means no complex fairing blocks or custom cuts. Its near-flush mount slides through the hull with ease, and the included isolation kit prevents galvanic corrosion on dissimilar metals. With a generous 26-foot cable, routing to your Raymarine multifunction display is straightforward, compatible with Axiom, Axiom+, Element, and legacy units running Lighthouse 3 or later software.

Pro tip: Position it forward of props and struts for clean water flow, typically 1/4 to 1/3 of the hull length from the bow. Dead simple for weekend warriors or pros alike, getting you back on the water faster.

Key Specs at a Glance

• Mount: Thru-hull, 0° for flat hulls
• Housing: Stainless steel with isolation kit
• Cable: 26 feet (8 meters)
• Sensors: AHRS + water temperature

Why Boaters Choose the RV-400 for Unmatched Performance

Stainless steel construction laughs off saltwater abuse, while the AHRS tech—rare in thru-hull designs—delivers pro-level stability without external stabilizers. Anglers report spotting fish hugging structure in ways 2D sonar misses, and cruisers appreciate the drag-free hydrodynamics that preserve top speeds. It's not just gear; it's the confidence to push further, fish harder, and explore safer.

Pair it with Raymarine's ecosystem for seamless integration, overlaying sonar with charts, radar, and autopilot data. From bass boats to center consoles, it's the transducer that elevates everyday trips into epic adventures.

What's Included for Quick Setup

• RV-400 transducer with 26-foot cable
• Anti-rotation bolt kit
• Transducer locknut
• Detailed installation guide

Frequently Asked Questions

Got questions about integrating the RV-400 into your setup? Here's what fellow boaters often ask.

Level Up Your Boating Game Today

From dawn patrols to sunset cruises, the RV-400 equips you with sonar smarts that reveal what's below. Invest in clarity that catches more fish and uncovers safer paths—because on the water, seeing is winning.