10 Best Ocean Chartplotters With Sonar for 2026: Top Garmin Picks for Coastal Navigation and Fishing

If you want a single display for navigation and fishfinding, an ocean chartplotter with sonar can simplify every trip offshore or along the coast. The right combo helps you read charts, scan structure, and track your route with less clutter at the helm.

In this roundup, we focus on Garmin options that balance screen size, sonar capability, map support, and ease of use so you can choose the best fit for your boat and your style of fishing.

Best 10 Ocean Chartplotter with Sonar Picks for 2026

Premium Coastal Chartplotter – Garmin ECHOMAP UHD2 94sv

If you want an ocean chartplotter with sonar that combines a large display, detailed coastal charts, and advanced scanning, the Garmin ECHOMAP UHD2 94sv is built for that job. The 9-inch sunlight-readable touchscreen makes it easier to interpret charts and sonar at a glance, while the included GT56 transducer adds Garmin traditional, ClearVü, and SideVü scanning sonar for broader coverage.

Best For: Coastal boaters who want a touchscreen chartplotter with advanced sonar and Garmin Navionics+ mapping.

Pros:

• Bright 9-inch touchscreen is easy to read in sunlight.
• GT56 transducer supports traditional, ClearVü, and SideVü sonar.
• Built-in Garmin Navionics+ U.S. Coastal charts add useful mapping detail.
• Wi-Fi lets you share sonar, waypoints, and routes with another ECHOMAP UHD2.

Cons:

• Designed around coastal use, so it may be more than some inland anglers need.
• Requires compatible gear to take advantage of wireless chartplotter sharing.

Overall, this model stands out if you want a feature-rich marine display with sonar and charting in one package. It brings together mapping, sonar, and connectivity in a format that suits serious coastal navigation and fishing.

Easy Sonar Fishfinder – Garmin STRIKER Vivid 7cv

The Garmin STRIKER Vivid 7cv is a straightforward choice if you want an ocean chartplotter with sonar-style fishfinding features without a complicated setup. Its 7-inch color display, vivid sonar palettes, and included GT20 transducer make it easier to spot fish and structure, while built-in GPS and Quickdraw Contours add practical mapping tools.

Best For: Anglers who want a simple fishfinder with sonar, GPS, and basic mapping tools.

Pros:

• Easy-to-use 7-inch color display with vivid scanning sonar palettes.
• GT20 transducer supports Garmin CHIRP traditional sonar and ClearVü scanning sonar.
• Built-in GPS helps mark waypoints, build routes, and view boat speed.
• Quickdraw Contours mapping and Wi-Fi add useful convenience.

Cons:

• It is a fishfinder rather than a full touchscreen chartplotter.
• Display size is smaller than the larger ECHOMAP models.

For boaters who value simplicity, this model delivers the core sonar and GPS features most people need. It is a practical pick when you want easy operation and dependable fishfinding tools in a compact unit.

Compact Touchscreen Coastal Plotter – Garmin ECHOMAP UHD2 64sv

If you need an ocean chartplotter with sonar in a smaller package, the Garmin ECHOMAP UHD2 64sv keeps the same easy-to-use touchscreen approach in a 6-inch format. It includes built-in Garmin Navionics+ U.S. Coastal charts and can wirelessly share sonar, waypoints, and routes with another ECHOMAP UHD2, making it a practical fit for streamlined coastal setups.

Best For: Boat owners who want a compact touchscreen chartplotter with coastal charts and wireless sharing.

Pros:

• 6-inch sunlight-readable touchscreen is compact and easy to use.
• Built-in Garmin Navionics+ U.S. Coastal charts add ready-to-use mapping.
• Wi-Fi supports wireless sharing of sonar, waypoints, and routes.
• Can connect with a Force trolling motor for route and control features.

Cons:

• Smaller screen offers less viewing area than the 9-inch model.
• Sonar transducer details depend on the selected device configuration.

This is a strong option if you want Garmin chartplotter features without the bulk of a larger display. It balances coastal mapping, touchscreen convenience, and wireless connectivity in a compact unit.

Budget Sonar Pick – Garmin STRIKER 4cv

The Garmin STRIKER 4cv is a compact, easy-to-read option if you want a basic ocean chartplotter with sonar features in a simple package. It includes CHIRP traditional sonar and ClearVü scanning sonar, plus built-in GPS and Quickdraw Contours mapping software for creating your own maps.

Best For: Budget-minded anglers who want a compact fishfinder with sonar and GPS.

Pros:

• Includes transducer for CHIRP traditional sonar and ClearVü scanning sonar.
• Built-in GPS lets you mark waypoints, create routes, and view speed.
• Quickdraw Contours can build custom maps with 1-foot contours.
• Bright 4.3-inch display and simple interface are easy to use.

Cons:

• Smaller 4.3-inch screen limits detail compared with larger units.
• Not a touchscreen chartplotter.

For a compact sonar-first unit, the STRIKER 4cv covers the essentials without adding complexity. It is best viewed as a straightforward fishing tool rather than a full-featured coastal navigation system.

Coastal Chartplotter Pick – Garmin ECHOMAP UHD2 54CV

If you want an ocean chartplotter with sonar for nearshore trips and casual coastal fishing, the Garmin ECHOMAP UHD2 54CV gives you a simple 5″ keyed display with chartplotter and fishfinder functions in one unit. It includes Garmin CHIRP traditional sonar and ClearVü scanning sonar, plus BlueChart and LakeVü g3 mapping with Navionics data for better route and structure awareness.

Best For: Anglers who want a compact coastal chartplotter with bundled sonar and map support.

Pros:

• 5″ keyed display is built for quick, convenient operation
• Includes CHIRP traditional and ClearVü scanning sonar
• High-contrast vivid color palettes improve underwater detail visibility
• Wi-Fi between compatible chartplotters makes info sharing easier

Cons:

• Smaller display may feel limited for users who want a larger split-screen view
• Designed around coastal mapping, so it may not be the best fit if you only need inland use

This model is a practical all-in-one option when you want dependable sonar plus coastal mapping without moving up to a larger, more complex system. Its convenience-focused controls and map ecosystem make it easy to use on smaller boats.

Simple Sonar Starter – Garmin Striker Vivid 4cv

The Garmin Striker Vivid 4cv is a straightforward fishfinder for buyers who want sonar first and extra complexity later. While it is not a full ocean chartplotter with sonar, it does provide Garmin CHIRP traditional sonar, CHIRP ClearVü scanning sonar, GPS waypoint marking, and built-in Quickdraw Contours mapping on a compact 4″ display.

Best For: Anglers who want an easy-to-use sonar fishfinder with basic mapping features.

Pros:

• Easy-to-use 4″ color display with vivid sonar palettes
• GT20 transducer adds CHIRP traditional and ClearVü scanning sonar
• High-sensitivity GPS helps mark waypoints and view boat speed
• Built-in Quickdraw Contours mapping adds useful extra navigation detail

Cons:

• It is a fishfinder rather than a dedicated chartplotter
• Smaller screen size limits visibility compared with larger marine displays
• Best suited to simpler setups instead of feature-heavy navigation systems

For buyers prioritizing sonar clarity and an easy learning curve, this model keeps the essentials in a compact package. It is a solid fit for smaller boats or anyone who wants fishfinding plus simple built-in mapping.

Inland Chartplotter Value – Garmin ECHOMAP UHD2 53CV

For shoppers looking for an ocean chartplotter with sonar style setup but focused on inland waters, the Garmin ECHOMAP UHD2 53CV combines a 5″ color display, CHIRP traditional sonar, and ClearVü scanning sonar in one compact package. It also comes preloaded with Garmin Navionics+ U.S. Inland Mapping, making it a practical choice when you want chartplotting and sonar without a larger display.

Best For: Boaters who want a compact chartplotter/fishfinder with inland maps and easy sharing.

Pros:

• 5″ IPS color display keeps the unit compact and readable
• CHIRP traditional and ClearVü scanning sonar come included
• Preloaded Garmin Navionics+ U.S. Inland Mapping adds ready-to-use charts
• Wi-Fi between compatible chartplotters makes sharing information easier

Cons:

• Mapping is geared toward U.S. inland waters rather than coastal charting
• 5″ screen may feel small for users who want more room for split views

This is a strong pick if you want Garmin chartplotter features and sonar in a portable-friendly size. It stands out most for inland boaters who value built-in maps and simple network sharing.

Premium 12-inch sonar chartplotter – Garmin ECHOMAP Ultra 126sv with GT56UHD-TM

If you want an ocean chartplotter with sonar that doubles as a powerful navigation hub, the Garmin ECHOMAP Ultra 126sv is built for that job. Its 12-inch keyed-assist touchscreen gives you plenty of room to view detailed sonar returns, charts, and structure at once, while the included GT56UHD-TM transducer brings crisp fishfinding detail to the screen. Built-in Garmin Navionics+ mapping and ActiveCaptain app support make it a strong pick for boaters who want a feature-rich system that can grow with their setup.

Best For: Anglers and boaters who want a large-screen chartplotter with detailed sonar, built-in mapping, and networked data sharing.

Pros:

• Large 12″ touchscreen with keyed assist for easier operation on the water
• Included GT56UHD-TM transducer delivers crisp sonar detail on fish and structure
• Built-in Garmin Navionics+ mapping supports confident navigation
• Can share sonar, charts, and data with other compatible devices

Cons:

• Larger display may be more than you need for smaller boats
• Best value comes if you plan to use its network and mapping features

This model stands out if you want a premium plotter that combines navigation, sonar, and onboard connectivity in one package. The broad display and included transducer make it especially appealing for users who want a single, integrated fishing and charting solution.

Compact keyed chartplotter/fishfinder – Garmin ECHOMAP UHD2 73CV with GT20-TM

The Garmin ECHOMAP UHD2 73CV is a practical ocean chartplotter with sonar for boaters who want a smaller, easy-to-read unit without giving up useful fishing tools. Its bright 7-inch keyed display is designed for convenience, and the included GT20-TM pairs Garmin CHIRP traditional sonar with ClearVü scanning sonar so you can see what’s below with more detail. With Wi‑Fi sharing and built-in map support, it fits well on boats where simplicity and clear sonar matter most.

Best For: Boat owners who want a compact chartplotter/fishfinder with simple controls and strong sonar basics.

Pros:

• Bright 7″ keyed display is easy to use and read
• Includes Garmin CHIRP traditional and ClearVü scanning sonar
• Wi‑Fi lets compatible chartplotters share information more easily
• Supports Garmin mapping with LakeVü g3 and BlueChart with Navionics data

Cons:

• Smaller screen offers less viewing space than larger models
• Focused on core sonar and mapping rather than a premium large-display experience

This is a solid pick if you want a straightforward unit that covers the essentials without a lot of complexity. It balances sonar performance, map support, and wireless convenience in a compact footprint.

Compact coastal sonar-ready chartplotter – Garmin ECHOMAP UHD2 64sv without transducer

If you need an ocean chartplotter with sonar for coastal use and want a compact touchscreen setup, the Garmin ECHOMAP UHD2 64sv is built to deliver a lot in a small package. Its 6-inch touchscreen with keyed assist is easy to read and operate, and it supports Garmin traditional, ClearVü, and SideVü sonar for a fuller view of what’s around your boat. Because it ships without a transducer, it works best for buyers who already have a compatible sonar setup or want to choose their own.

Best For: Coastal boaters who want a compact chartplotter and plan to add or match their own transducer setup.

Pros:

• 6″ touchscreen with keyed assist for simple operation
• Supports Garmin traditional, ClearVü, and SideVü sonar
• Can support LiveScope live-scanning sonar
• Built-in Wi‑Fi and Garmin Navionics+ compatibility add useful navigation features

Cons:

• Sold without a transducer, so setup may require an extra purchase
• Smaller display leaves less room for split-screen viewing

This model makes sense if you want a capable coastal plotter and prefer to configure the sonar hardware yourself. It combines strong mapping, multiple sonar support options, and wireless sharing in a compact unit.

How We Picked These Ocean Chartplotter with Sonar Options

We focused on Garmin combo units that pair chartplotting with built-in sonar or bundled transducers, since that gives you the most value for coastal and inland use. Priority went to models with practical screen sizes, modern sonar compatibility, clear mapping support, and a setup that makes sense for real-world boating.

We also favored units that fit different budgets and boat sizes, from compact displays for smaller consoles to larger screens for serious offshore navigation.

Quick Comparison: What Stands Out

The lineup splits into three broad groups: compact 4- to 7-inch units for smaller boats and simple installs, mid-size 9-inch models for a stronger balance of visibility and detail, and larger 12-inch displays for users who want more chart area and sonar space at a glance. Some models are chartplotter/fishfinder combos with included transducers, while others are chartplotter-only for buyers who already have compatible sonar hardware.

Key Buying Factors for an Ocean Chartplotter with Sonar

Display Size and Visibility

On a moving boat, screen size matters. A larger display makes split-screen views easier to read, but it also takes more dash space and usually costs more. Smaller units are fine for tight helms, kayaks, and small center consoles.

Sonar Type and Transducer Bundle

Check whether the unit includes a transducer and what sonar it supports. CHIRP traditional sonar is useful for general depth and fish detection, while scanning sonar helps reveal structure and bait with more detail. If you want an Ocean Chartplotter with Sonar for mixed-use fishing, bundled transducers reduce guesswork and extra purchases.

Charts and Coastal Coverage

Coastal boaters should pay close attention to map bundles and chart compatibility. U.S. coastal maps are especially helpful for nearshore navigation, while inland map versions are better suited to lakes and rivers. Make sure the unit matches where you actually run the boat.

Mounting, Networking, and Expansion

If you plan to add radar, second displays, or autopilot later, choose a model with the connectivity and screen size to grow with your setup. A more expandable chartplotter can save money over time even if the initial purchase is higher.

Who Should Buy Which Ocean Chartplotter with Sonar?

Choose a compact 4- to 7-inch model if you want an affordable, easy-to-install unit for smaller boats or simpler fishing trips. Step up to a 9-inch display if you want a better all-around balance of chart readability and sonar detail for coastal runs. Go with the largest display if your boat has the helm space and you want maximum visibility for navigation, split-screen sonar, and multi-function use.

If you already have compatible sonar hardware, a chartplotter-only unit may be the smarter buy. If you want a simpler plug-and-play setup, a combo with an included transducer is usually the better starting point for most buyers.