April 15, 2026

No matter your skill level, sonar is an essential tool for any angler exploring the underwater world. When you outfit your boat with the proper sonar equipment, you’ll spend less time guessing and more time catching fish.

Luckily, Garmin has plenty of sonar options including underwater perspectives from the side of, around or in front of your boat. With enhanced 2D and 3D multidimensional sonar visuals, anglers can find nooks and crannies in bottom structure as well as uncover fish patterns and positioning.

Keeping reading to learn more about Garmin sonar and the benefits of utilizing on your next fishing trip.

What is Garmin sonar?

At Garmin, sonar offerings span from captured images (scanning sonar) to real-time footage (live sonar) that can be seen on your compatible chartplotter.

Whether you just got your first fishfinder or you’re a seasoned angler, CHIRP sonar is ideal. CHIRP sonar uses multiple frequencies to bring you high-resolution images with even better target separation. CHIRP kHZ allows you to adjust your settings to low, medium or high depending on the depths you’re exploring. High settings are preferable for shallow waters and identifying smaller targets while low CHIRP is meant for deep water and marking targets at various depths.

When you first get out on the water, you need big picture details. That’s where scanning sonar comes into play. Begin your trip by finding bottom structure and cover, both potential hiding spots for fish, with ClearVü™, SideVü™ and OneVü™. When you have a Garmin transducer, use ClearVü to see directly below your boat and SideVü to see details to the side of you. Broaden your scope even more with OneVü. If you have Spy™ Pole and the GT360UHD transducer onboard, get a 360-degree view of life below your boat in both 2D and 3D. Plus, scan up to a whole football field worth of data.

Now that you have an idea of where you might find some fish, use Garmin LiveScope™ to home in on them with live sonar footage. Live sonar allows you to see fish in relation to your boat in 3 different modes. Forward mode shows you the surroundings in front of your boat, down mode details underwater surroundings directly below your boat and perspective mode gives you a horizontal field of view — preferable for fishing in shallow water.

Benefits of having sonar onboard

1. Finding fishing spots

Instead of lingering in an area where baiting fish would be hard to do, scanning sonar, like ClearVü, SideVü and OneVü, makes it undeniably easy to see bottom structure where fish might be hiding. Now, you’ll be able to cover water quickly and detect hard-to-find spots.

2. Precision and efficiency

Time is valuable when you’re on the water, especially in tournaments. Once you’ve quickly identified potential fishing spots, turn to live sonar to study fish patterns and movement. Cast your line and see your positioning in relation to the fish or bottom structure below on your chartplotter. Plus, watch as fish interact with your line to detect early bites and better understand behavior towards your bait.

3. Navigate confidently

Sonar can be used for more than just catching fish. See water depths and avoid bottom structure when viewing below the surface imagery on your chartplotter. When in shallow water, be aware of rocks and reefs so you can prevent potential collisions.

4. GPS integration

You’ve found a fishing spot that consistently provides results. Come back time and time again when you mark a waypoint on your chartplotter. Then, you can easily navigate back. Plus, if you have a Force® trolling motor mounted, let it take over and automatically route you back.

And, if you have a Garmin GT360UHD transducer, built-in TrueMotion technology lets you spend more time catching fish. Even if your boat moves, the technology integrates with GPS and allows you to roam within the scanned area.

Help ensure a successful fishing trip with when you take advantage of Garmin sonar capabilities. Prepare for your next outing and learn more about getting sonar on your boat.