RealVision 3D Plastic Thru-Hull Transducer Pack (RV-312P/S or RV-320P/S)

The Raymarine RealVision 3D Plastic Thru-Hull Transducer Pack (T70320) unlocks an immersive underwater view by combining multiple sonar technologies in one integrated system. This pack includes two plastic through-hull transducers – one for the port side and one for the starboard side of your hull. Working in tandem, these twin transducers provide full 180° coverage beneath your boat, ensuring you see everything from port to starboard under the water. In practical terms, that means you’ll not only know what’s directly below, but also get detailed imagery of fish and structure to the left and right of your path, all rendered in a lifelike 3D perspective.

The RealVision 3D™ system in this pack is a 4-channel CHIRP sonar platform, consisting of:

• DownVision™: A high-frequency, fan-shaped beam that yields photorealistic views of the seabed directly beneath the vessel. It’s like shining a spotlight downwards to see bottom structure (rocks, wrecks, vegetation) in photo-like detail.
• SideVision™: CHIRP sonar beams looking up to 180m (600ft) to each side of your boat, scanning the water and bottom outwards. This helps detect fish schools and structure off to the sides that a traditional downward-looking sonar would miss.
• High-Frequency CHIRP Fishfinder: A conical beam (centered downward) for classic fishfinding – showing fish arches, depth readings, and bottom profiles with the clarity of CHIRP.
• RealVision 3D™: A fusion of all the above plus onboard motion sensing, constructing a three-dimensional model of everything under your boat. This unique 3D view displays the bottom terrain and targets (like fish) in three dimensions, which you can rotate and examine from different angles on your Raymarine display. It’s akin to having an underwater drone’s perspective, all generated in real time as you drive the boat.

This plastic thru-hull pack comes in two tilt-angle variants: RV-312 and RV-320, referring to the internal element tilt of the transducers:

• RV-312 (12° tilt): Suited for moderate hull deadrise (roughly 8°–15°). The internal 12° offset aims the sonar beams vertically when installed on V-hulls of that slope, ensuring accurate returns. This is ideal for many leisure craft and sportfishers with moderate V-hulls.
• RV-320 (20° tilt): Suited for steeper hull deadrise (approximately 15°–25°). With a 20° internal tilt, these transducers can be mounted on deep-V hulls (common in offshore racing boats, center consoles, etc.) and still shoot sonar straight down.

In both cases, you get a dedicated Port and Starboard transducer that operate as a pair. One transducer covers to the port side + down, the other covers starboard + down, and together they stitch a complete view without any blind spots. Each transducer is equipped with an AHRS (Attitude and Heading Reference System) – essentially an internal gyro and accelerometer – which continuously measures the boat’s motion (pitch, roll, yaw). The system uses this data to stabilize the sonar imagery, so even if the boat is rocking in waves or turning, the displayed 3D model remains steady and accurate. This means you can trust the 3D view to represent true positions of fish and structure, without distortion from boat movement.

Included in the pack:

• 1 × RV-312P or RV-320P transducer – Plastic thru-hull (Port side) with 2 m pigtail cable.
• 1 × RV-312S or RV-320S transducer – Plastic thru-hull (Starboard side) with 2 m pigtail cable.
• 1 × RealVision 3D Y-Cable – Combines the port and starboard transducer outputs into a single connector for the MFD/sonar module.
• 1 × 8 m (26 ft) Extension Cable – Connects from the Y-cable to your Raymarine system, giving an overall reach of ~10 m (33 ft) from each transducer.
• Mounting hardware and anti-rotation kit – Ensures secure installation of the transducers in the hull.
• Installation manual and setup instructions.

Advantages of the plastic RealVision 3D transducer pack:

• Complete 3D Underwater Visualization: With this system, you’re essentially painting a 3D map of everything around your boat. You’ll see bottom contours and hardness differences, submerged structures like wrecks or drop-offs, and even individual fish – all plotted in three dimensions relative to your boat. You can pan, zoom, and rotate the 3D view on your Raymarine display to examine fishing spots or anchorage sites from any angle, gaining insights that 2D sonar can’t provide.
• Elimination of Blind Spots: Traditional single transducers have areas they can’t “see” due to the hull blocking one side. By using a split transducer array (port and starboard), RealVision covers both flanks of your boat. Even if you have a keel or other protrusion, one of the two transducers will capture what the other might miss. This results in seamless left-right coverage – you won’t have a gap directly under the boat or on either side.
• Low-Profile, No Fairing Installation: The plastic thru-hull transducers in this pack are designed to mount flush to the hull, protruding only a small amount. Unlike some older multi-element thru-hulls, these do not require a large fairing block to fair them to the hull shape. This keeps drag to a minimum – important for high-speed boats – and avoids altering the boat’s running characteristics. The plastic material is also inert to metal, making it safe to install on aluminum or steel hulls (with proper isolation of the stainless steel bolts, for example).
• Built for Raymarine Axiom family: The pack is intended to plug directly into Raymarine’s Axiom Pro RVX or Axiom RV multifunction displays (as well as the newer Axiom 2 Pro RVM models). These MFDs have the built-in 3D sonar processing to fully utilize the RealVision 3D data. Once connected, setup is straightforward – the system will detect both transducers and calibrate the 3D sonar automatically. You can then access all the combined views: 3D, DownVision, SideVision, and conventional CHIRP sonar, with easy split-screen or full-screen options.
• Depth and Range Capabilities: The RealVision 3D transducers operate across a wide CHIRP frequency spectrum, enabling them to provide detailed imaging at depth. Generally, the effective range for the 3D/Side/DownVision channels extends to about 90–120 m (300–400 ft), depending on water conditions. The high-frequency fishfinder channel can often reach greater depths (upwards of 300 m in ideal conditions) for basic depth and fish readings. This coverage is more than sufficient for most coastal fishing and bottom mapping tasks. In shallow water, the detail is incredible; in deeper water, you still get valuable insight into structure and schools that can transform your fishing or diving strategy.

With the Raymarine RealVision 3D Plastic Transducer Pack, you bring a professional-grade sonar suite to your vessel, rivaling systems on much larger boats. This pack is designed to outperform competitor offerings by delivering unmatched clarity and a true 3D understanding of the underwater environment. Installation is straightforward, and once in the water, the system offers an intuitive view that can drastically improve fish-finding efficiency and situational awareness. Whether you’re dropping lines over a reef, scouting a complex wreck site, or simply ensuring a safe depth under your keel, the RealVision 3D transducer pack gives you the knowledge and confidence to make the most of your time on the water.