The DFF-3D is an innovative tool for efficient fish location and seabed profile surveying, utilizing new multi beam technology. Highly detailed images are derived from the combination of an advanced signal processing system and an amazingly compact multi beam transducer.

Compatible with NavNet TZtouch/TZtouch2

Field impression in Tokyo Bay, Japan

  • Introduction

  • System Installation

  • 3D history mode

  • Deep water detection (approx. 450 ft / 150 m)

  • Shallow water detection (approx. 100 ft / 33 m)

  • Other captures (Structure/Wreck...)


Visibly see the landscape and
fish schools at great depths in amazing detail

Depth : 130 m

Turn your NavNet TZtouch or TZtouch2 MFD into a multi beam sonar that can see 120-degrees port to starboard, allowing you to see the depth and direction fish schools are moving, while displaying the seabed condition in real time.

  • Sidebar detection range is up to 200 m (over 650 feet)* in a 120-degree swath port and starboard direction.

  • Deep water, main beam penetration directly under the boat is approx. 300 m (over 980 feet)*.

*Depending on bottom, water and installation conditions.

The compact and fully featured transducer

Thru-hull mount transducer B54 Transom mount transducer TM54

  • The compact transducer allows easy installation.

  • The built-in motion sensor (standard supply) stabilizes the display to give clear and stable images even under rough sea conditions.

Customize the display according to your needs

  • Depending on the situation and preference, a combination of screen modes can be displayed.

Modes Overview

DFF-3D with groundbreaking four modes bring a whole new dimension to your fishing.

Cross Section

Cross section displays the real-time sea column echo in 120 degrees port and starboard. This mode aids in instantly understanding the distribution of bait fish and the water column condition.

3D Sounder History

The 3D sounder history provides an intuitive and easy to understand 3D image of the seafloor, along with fish school icons. This mode is useful in a variety of situations, such as selecting a fishing hot spot and assessing the seabed condition.

Triple/Single Beam Sounder

A single (directly under boat) or triple direction (middle, left and right) fish finder image is displayed simultaneously. The Triple beam display helps to understand the depth of fish targets and the seabed condition in each direction, as well as the direction the target fish are moving. Each beam angle and beam width are selectable.

Side Scan

Side scan clearly displays the shape of structure as a high definition image in port and starboard direction.
It is suitable for searching the seabed and understanding the sea floor structure.


Model: DFF-3D


TX Frequency 165 kHz
Output Power 800 W
Minimum Range 3 m
Basic Range 5-1200 m
Detection Range 200 m* (Side Beam Best Performance)
300 m* (Main Beam Directly Under Boat) *Depending on bottom, water and installation.
Beam Angle for Triple Beam Sounder 20°-50° from right under
Display Mode Triple/Single Beam Sounder, Side Scan, Cross Section, 3D Sounder History


LAN 1 port, Ethernet 10/100Base-TX
External KP 1 port (optional external KP kit required)


Temperature -15°C to + 55°C
Relative humidity 93% or less at +40°C
Waterproofing IP55


DFF-3D 12-24 VDC, 1.4-0.7 A
Rectifier (PR-62, option) 100/110/220/230 VAC, 1 phase, 50/60Hz

Equipment List

Multi Beam Sonar
B54 (for thru-hull mount) or
TM54 (for transom mount)

Spare Parts, Installation Materials

Option External KP Kit
Cable Assembly (2 m/10 m)


Interconnection Diagram

* System version requirement for NavNet series:
NavNet TZtouch (TZT9/TZT14/TZTBB) version 5.01 or later
NavNet TZtouch2 (TZTL12F/TZTL15F) version 5.01 or later

This Product is only compatible with NavNet TZtouch/TZtouch2.
For more information about our NavNet products, please click the link below.

Brochure Download


Contact a local distributor for further details.

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