Raymarine Transducers for Multifunction Displays, Sonar Fishfinders and Instrument Displays | Marine Electronics by Raymarine

Raymarine Transducers

Compatible with Multifunction Displays, Sonar / Fishfinders and Instrument Displays

The transducer is the heart of a sonar / fishfinder system. The device converts electrical pulses into acoustic energy or sound waves and transmits these waves into the water. When the transducer receives the reflections (echoes), the sonar / fishfinder module convertes the sound waves back to electrical pulses to interpret what is below the surface of the water.

Sonar transducers can be used to detect fish, bottom structures and the sea / river bed topography. They can record the depth and temperature of the water, the speed of the boat and can generally aid in navigation by rendering images of what's below the boat.

Raymarine offers a wide range of depth, speed and temperature transducers that work with instruments, multifunction displays and sonar modules.


Transducer Cables & Accessories

Find extension cables, adapter cables and accessories for the full range of Raymarine transducers.




The CPT-S In-hull transducer provides a simple-to-install depth only transducer solution for non-cored fiberglass hulls. Ideal for sailing, cruising, and small powerboat applications, the CPTS-S In-hull transducer supports CHIRP operation centered on 200kHz.

Compatible with: Element, Axiom, Axiom+, Axiom Pro & Legacy Multifunction Displays


Full specifications be can found in the product sections above.


Transducers are available in transom mount, in-hull, or through hull configurations and are available in plastic composite, bronze or stainless steel to fit practically any boat on the water.

With a range of mounting styles, it's important to learn which type of transducer in correct for your boat and boating needs.

Hull Material Reference Guide
Hull Material Recommended Transducer Material
Fibreglass Plastic / Urethane / Bronze
Metal - Steel Hull | Aluminium Hull | Other Stainless Steel | Stainless Steel | Plastic / Urethane
Wood Bronze
View our buying guide for more information

Transom Mount Transducers

Types of Transducers - Transom Mount | Marine Electronics by Raymarine

As the name implies, transom mount transducers are installed on the boat's transom, directly in the water and typically sticking a little below the hull. Transom mounts are composed of plastic and tend to be less expensive than other transducers.

Transom mount transducers are recommended for planing hulls of less than 27 feet (8 meters), such as personal watercraft and powerboats with outboard, inboard-outboard and jet drives. They are not recommended for large or twin screw inboard boats because aerated water from the propeller reduces performance. They are also not recommended for operation at very high speeds.

Transom mounts adjust to transom angles from 3° – 16°. For angles greater than 16°, a tapered plastic, wood or metal shim will be needed. However, the transducer should be adjusted so it is angled slightly forward when the boat is in the water.

In-Hull Transducers

Types of Transducers - In Hull | Marine Electronics by Raymarine

In-hull (a.k.a. shoot-through) transducers are epoxied directly to the inside of the hull. These are only used in fiberglass hulls. In-hulls will not work with wooden, aluminum, or steel hulls, or in foam sandwich/hulls that have air pockets. Any wood, metal, or foam reinforcement must be removed from the inside of the hull.

With an in-hull transducer, the signal is transmitted and received through the hull of the boat. As a result, there is considerable loss of sonar performance.

In other words, you won't be able to read as deep or detect fish as well with an in-hull transducer as with one that's transom mounted or thru-hull mounted.

Fiberglass hulls are often reinforced in places for added strength. These cored areas contain balsa wood or structural foam, which are poor sound conductors. The transducer will need to be located where the fiberglass is solid and there are no air bubbles trapped in the fiberglass resin. You'll also want to make sure that there is no coring, flotation material, or dead air space sandwiched between the inside skin and the outer skin of the hull.

Through-Hull Transducers

Types of Transducers - Through Hull | Marine Electronics by Raymarine

Through-hull transducers are mounted through a hole drilled in the bottom of the boat and protrude directly into the water. This type of transducer generally provides the best performance.

Through-hulls are recommended for displacement hulls and boats with straight-shaft inboard engines. You'll also need a fairing block that allows the transducer to be mounted properly. Through-hull transducers must be installed with a fairing to ensure proper alignment and a secure fit.

Through-hull transducers must be positioned in front of the propeller, rudder, keel or anything else that may create turbulence. They must be mounted in a position that is always underwater and angled straight down.

Tilted Element Transducers

Types of Transducers - Tilted Element | Marine Electronics by Raymarine

Tilted Element transducers are mounted through a hole drilled in the bottom of the boat and protrude directly into the water. Tilted Element transducers offer performance similar to through-hulls.

Tilted Element transducers are mounted flush against the hull. Unlike traditional Through-Hull transducers, Tilted Elements do not need a fairing block. The element inside the transducer acts as a leveling agent, working with the deadrise (angle) of your hull to ensure the transducer's beam is directed straight down.

These transducers will generally come in two configurations based on your hull type, a 12º and 20º version. Select a 12º tilt when the deadrise of your hull falls in the 8º to 15º range. Select the 20º tilt if your hull's deadrise is in the 16º to 24º range.

When installing a Tilted Element transducer make sure to position it in front of the propeller, rudder, keel or anything else that may create turbulence. They also must be mounted in a position that is always underwater and angled within the appropriate deadrise range.