Imagine scanning the underwater world in stunning detail, spotting fish schools darting left or right, and mapping the seabed like never before. The Furuno DFF3D transforms your NavNet TZtouch or TZtouch2 multifunction display into a powerful multi-beam sonar system. With its wide 120-degree port-to-starboard coverage, you get real-time insights into fish movements and bottom structures, making it a game-changer for serious anglers chasing deep-water trophies.
Unlike traditional single-beam sounders that only peek straight down, this sonar sweeps a broad area, revealing baitfish distributions and hidden hotspots faster. Whether you’re trolling offshore or bottom fishing, the DFF3D’s main beam dives deep—often beyond 1,000 feet—while side beams cover over 650 feet sideways, all stabilized by a built-in motion sensor for crystal-clear images even in choppy waters.
Powerful Viewing Modes for Every Fishing Scenario
The DFF3D offers versatile display options tailored to how you fish, letting you switch seamlessly between modes on your MFD.
Cross-Section View
Get a live, vertical slice of the water column across 120 degrees. This mode shines for tracking baitfish layers and current influences, helping you position your boat perfectly over active zones.
3D Sounder History
Relive your path with a rotatable 3D seabed map, complete with fish school markers. Ideal for pinpointing wrecks, drop-offs, or ledges that hold big game, it turns past scans into future success.
Triple-Beam Fish Finder
Monitor straight down, left, and right simultaneously. Adjustable beam angles and widths let you customize for precise targeting, revealing fish depth and movement direction in one glance.
Side Scan Imaging
High-definition portraits of underwater structures emerge port and starboard. Perfect for scouting reefs or searching vast flats without missing a thing.
Standout Features That Deliver Results
Expansive Coverage: Side detection exceeds 650 feet (200m) across a 120-degree swath, capturing what’s lurking off to the sides.
Deep Penetration: Central beam reaches over 1,000 feet (350m) under the boat, excelling in varied water conditions.
Rock-Solid Stability: Integrated motion sensor compensates for boat roll and pitch, ensuring steady visuals in rough seas.
Flexible Installation: Choose thru-hull or transom-mount transducers for easy setup on most vessels.
Customizable Interface: Layer multiple modes side-by-side, with intuitive menus for quick adjustments on the water.
Why Anglers Swear by the DFF3D for Bigger Catches
This isn’t just sonar—it’s your underwater scout. Traditional fish finders leave you guessing about fish direction and seabed details. The DFF3D eliminates that, letting you:
Locate structure-oriented species like snapper or grouper hiding in complex bottoms.
Follow pelagics like tuna as they swing wide, adjusting your drift in real time.
Save time exploring new grounds with historical 3D overlays.
Boost confidence in deep water, where single beams fall short.
Compact design means straightforward integration into your existing NavNet setup, without major hull modifications.
Technical Specifications at a Glance
Category
Details
General
Transmit Frequency
165 kHz
Output Power
800 Watts
Minimum Range
3 meters
Basic Range
5-1200 meters
Detection Range
200m side beam (best performance); 300m+ main beam under boat (varies by conditions)
Beam Angle (Triple Beam)
20-50 degrees from vertical
Display Modes
Triple/single beam, Side Scan, Cross Section, 3D Sounder History
Interface
LAN
1 port (Ethernet 10/100Base-TX)
External KP
1 port (optional)
Power
Voltage
12-24 VDC
Current Draw
1.4/0.7 Amps
Everything You Need to Get Started
DFF3D Multibeam Network Sonar unit
Fuse (FGBO 5A x 2)
M5 x 20 Tapping Screws (x4)
5m Network Cable
Power Cable Assembly
Crimp Lug (Red 1.25)
Conductive Tape
Operator’s Manual
Frequently Asked Questions
What makes the Furuno DFF3D different from standard fish finders?
It uses multi-beam technology for 120-degree side coverage, showing fish direction and seabed in 3D, far beyond single-beam limits.
How deep can the DFF3D detect fish and structure?
Side beams reach over 650 feet (200m), with the main beam penetrating beyond 1,000 feet (350m) under the boat, depending on water clarity and bottom type.
