Furuno DFF3D System




Multibeam technology has been around for a long time in the Commercial Survey and fishing sectors and is now starting to make big inroads into the recreational market. This product was partly developed here in New Zealand by the WASSP engineers working at ENL, and works really well for the type of inshore fishing which is common around the country. The 350M maximum range is very handy!

Currently only available as a thru hull version, the transom mount version (which looks very much like a TM260) will be available shortly.


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. The new DFF3D gives you real-time 120 port-starboard view of the water column and seabed in over 650 feet. The DFF3D allows you to explore fishing spots and find fish in deep water far faster than conventional single beam sounders. The main beam penetrates right under the boat at a depth of over 1,000 feet, depending on water conditions. Installation is made easy thanks to a compact transducer design. The built-in motion sensor in the transducer stabilizes the display to give clear and stable images, even under rough sea conditions.

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 water column conditions.

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 fishing hotspots and assessing the seabed condition.

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


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 sea floor structure.



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

Spare Parts, Installation Materials

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