5 Best Side Sonar Fish Finder Models Compared (2026)

Updated November 2026

A side sonar fish finder shows you what sits to either side of your boat, not just straight down. That matters when you are looking for bait balls, structure edges, submerged wrecks, or fish holding tight to a reef line. Choosing one comes down to a handful of practical factors: screen size and readability in bright sun, side imaging range and resolution, whether GPS and mapping are built in, transducer compatibility, and how easily the unit mounts to your boat. The five models below are compared against those criteria using manufacturer specifications and the patterns owners commonly report.

Our Top Picks

Quick Comparison

Product	Best for	Key feature
Garmin Striker Vivid 7cv with GT20-TM Transducer	Overall balance of screen, sonar and value	CHIRP sonar with ClearVü and SideVü scanning options
Garmin Striker Vivid 7sv	Compact helm spaces and small boats	7-inch color display with Vivid scanning sonar palettes
Humminbird XPLORE 9 GPS Fish Finder	Side imaging detail and GPS mapping	MEGA Side Imaging+ with touchscreen control
Humminbird XPLORE 10 GPS Fish Finder	Large-screen mapping and route planning	Larger touchscreen with MEGA Side Imaging+
Garmin Striker Vivid 9sv	Bigger screen without a full chartplotter	9-inch display with Vivid scanning sonar

Garmin Striker Vivid 7cv, U.S. with GT20-TM Transducer

Best for: Overall balance of screen, sonar and value

This is a good fit for anglers who want a 7-inch unit that can handle both traditional depth readings and side-view scanning from a single helm. It suits center consoles, bay boats and small offshore boats where you need detail without a large footprint.

Key specs

• 7-inch color display
• Includes GT20-TM transducer (per listing name)
• Vivid scanning sonar color palettes

Pros

• Clear color presentation that is easy to read in bright conditions
• Good balance between screen size and footprint
• Scanning sonar gives a usable side-view picture for locating structure

Cons

• Side-view coverage is narrower than the dedicated side imaging units in this list
• Smaller screen can feel cramped for detailed chart work

Bottom line: A strong first choice for most saltwater anglers who want side-view capability without stepping up to a chartplotter-class unit.

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Garmin Striker Vivid 7sv

Best for: Compact helm spaces and small boats

The 7sv is aimed at anglers with limited dash space, such as kayak and small skiff users who still want scanning sonar. It is also a practical option as a second unit on a bow mount.

Key specs

• 7-inch color display
• Vivid scanning sonar color palettes
• Sold with transducer per the listing name

Pros

• Compact footprint for tight mounting locations
• Easy menu layout for quick adjustments on the water
• Vivid palettes help separate fish arches from bottom returns

Cons

• Less screen real estate for split views than larger models
• Side-view range may feel limited in deep open water

Bottom line: Choose this if space is the main constraint and you mostly fish shallower inshore or nearshore water.

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Humminbird XPLORE 9 GPS Fish Finder with Transducer

Best for: Side imaging detail and GPS mapping

This model is built for anglers who rely heavily on side imaging to read bottom texture, cover and fish position, and who want GPS mapping on the same screen. It fits offshore runs, reef and wreck fishing, and structure-focused freshwater work.

Key specs

• 9-inch touchscreen display (per listing name)
• MEGA Side Imaging+ (per listing name)
• GPS fish finder with transducer included

Pros

• Detailed side imaging that shows bottom texture clearly
• Touchscreen controls simplify switching between views
• GPS mapping supports waypoints and route marking

Cons

• Mapping features take time to learn for newer users
• Larger footprint than the 7-inch Garmin options

Bottom line: A good pick for anglers who want high-detail side imaging and charting in a mid-size package.

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Humminbird XPLORE 10 GPS Fish Finder with Transducer

Best for: Large-screen mapping and route planning

The 10-inch version suits larger boats and anglers who run multiple views at once, such as side imaging alongside a map. Owners running two-person offshore setups often prefer the extra screen area.

Key specs

• 10-inch touchscreen display (per listing name)
• MEGA Side Imaging+ (per listing name)
• GPS with transducer included

Pros

• Larger screen makes split-view layouts easier to read
• Strong side imaging detail for locating bottom features
• Good fit for route planning and waypoint management

Cons

• Larger size requires more dash space and a sturdy mount
• Overkill for small boats or kayak setups

Bottom line: Best for anglers on mid-to-large boats who want the biggest display and full mapping capability.

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Garmin Striker Vivid 9sv

Best for: Bigger screen without a full chartplotter

This model gives you a 9-inch display and scanning sonar without the added complexity of full GPS chart features. It works well for anglers who mainly want to see fish and structure clearly.

Key specs

• 9-inch color display (per listing name)
• Vivid scanning sonar color palettes
• Sold with transducer per the listing name

Pros

• Larger display is easier to read at a glance
• Simple interface suited to fishing-focused use
• Scanning sonar palettes help with target separation

Cons

• Lacks the dedicated side imaging range of Humminbird models
• Limited mapping compared with GPS-equipped units

Bottom line: A solid choice if you want a bigger screen for fish-finding and do not need advanced chart functions.

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Buying Guide

Side imaging range and resolution

Side imaging range determines how far from the boat you can see on each side. Manufacturers typically list range per frequency setting, and higher frequencies give sharper detail at shorter range. For reef and wreck work, look for a unit that lets you adjust range to match the depth and the target size.

Good picks for this: Humminbird XPLORE 9 GPS Fish Finder, Humminbird XPLORE 10 GPS Fish Finder

Screen size and readability

A 7-inch screen fits small consoles, while 9 and 10-inch displays make split views easier to read. Check whether the screen is sunlight readable and whether it supports the palettes you prefer. Owners of bright-sky boats often mention glare as their main frustration.

Good picks for this: Garmin Striker Vivid 7sv, Garmin Striker Vivid 9sv

Transducer compatibility and included hardware

Confirm which transducer is included and whether it matches the sonar types you want. Some setups require a separate transducer for side imaging, so read the listing carefully before buying.

Good picks for this: Garmin Striker Vivid 7cv with GT20-TM Transducer, Humminbird XPLORE 9 GPS Fish Finder

GPS and mapping needs

If you run offshore or fish unfamiliar water, built-in GPS and charts help with waypoints and route planning. Inshore anglers who fish known spots may not need full mapping and can save space with a simpler unit.

Good picks for this: Humminbird XPLORE 10 GPS Fish Finder, Humminbird XPLORE 9 GPS Fish Finder

Boat size and mounting

Measure your dash or console before choosing a screen size. A 10-inch unit needs a sturdy mount and clear sight lines. Consider whether you will use a bracket, a flush mount or a portable setup, and check that your transducer can be placed in clean water with minimal turbulence.

Good picks for this: Garmin Striker Vivid 7sv, Garmin Striker Vivid 7cv with GT20-TM Transducer

Durability and water exposure

Marine electronics face spray, UV and temperature swings. Look for a waterproof rating in the manufacturer’s specifications and use sun covers when the unit is not in use. Proper sealing of cable connections matters as much as the housing itself.

Good picks for this: Garmin Striker Vivid 9sv, Humminbird XPLORE 9 GPS Fish Finder

Care and maintenance

Rinse the screen with fresh water after saltwater trips, avoid abrasive cleaners, and keep the transducer face free of growth. Check software updates periodically and inspect cables for wear. Consult the manufacturer’s manual for approved cleaning methods.

Good picks for this: Garmin Striker Vivid 7cv with GT20-TM Transducer, Garmin Striker Vivid 7sv

FAQ

What is a side sonar fish finder?

A side sonar fish finder uses sonar beams aimed to the left and right of the boat to produce a picture of the bottom and objects beside the hull. It helps anglers find structure, wrecks and fish that are off to the side rather than directly below.

How far can side imaging see?

Range depends on the transducer, frequency and water conditions. Manufacturers list maximum ranges per setting, and actual coverage is usually shorter in murky or deep water. Check the specifications for the model you choose.

Do I need GPS with a side imaging unit?

Not always. GPS helps with waypoints, mapping and returning to productive spots. Anglers who fish well-known areas may be satisfied with a unit that has side imaging but no full chart functions.

Can a side sonar fish finder work in saltwater?

Yes, but you should confirm that the transducer is rated for saltwater use and that the housing is protected from corrosion. Rinse equipment after trips and follow the manufacturer’s care instructions.

What screen size is best for a small boat?

A 7-inch display is often the practical choice for small consoles and kayaks because it fits in tight spaces. Larger screens are better suited to boats with more dash room and anglers who run split views.

Is side imaging the same as scanning sonar?

They are related but not identical. Side imaging typically produces a high-detail picture of the bottom at a set range, while scanning sonar is a broader view that can show fish and structure in a different format. Many modern units offer both.

Conclusion

For most saltwater anglers, the Garmin Striker Vivid 7cv with GT20-TM Transducer offers a practical balance of screen, sonar and value. Anglers who need compact mounting should look at the Garmin Striker Vivid 7sv, while those who prioritize high-detail side imaging and charting will find the Humminbird XPLORE 9 or XPLORE 10 better suited. The Garmin Striker Vivid 9sv is a good choice if you want a larger screen for fish-finding without full mapping. Match the choice to your boat size, your need for GPS, and how far you typically fish from shore.

Sources

• Nautical charting, depth data and marine navigation resources for U.S. coastal waters (noaa.gov)
• Boating safety guidance, including equipment and navigation recommendations (uscg.mil)
• Information on fish habitat, structure and regional saltwater fisheries management (fisheries.noaa.gov)

Related reading

• Side Scanning Sonar Fish Finder: How It Works and How to Use It (2026)
• Side Scan Sonar Fish Finder: How It Works and How to Use It (2026)
• Sonar Fish Finder Portable (2026): Which Should You Choose?
• Side Scanning Fish Finder: How It Works and How to Use One (2026)
• Side Scanner Fish Finder: How It Works and How to Use One (2026)

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