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Navigating small boats without proper electronics is like driving at night without headlights. After testing chartplotters on everything from 14-foot skiffs to 20-foot center consoles over the past three years, I’ve learned that the right marine GPS transforms your time on the water. The best chartplotters for small boats combine accurate positioning, clear sonar, and displays you can actually read in direct sunlight.
Small boat navigation comes with unique challenges. Limited dash space, exposed mounting locations, and power constraints mean you can’t just install whatever the big boats use. You need equipment designed for compact vessels that still delivers reliable performance when you’re miles from shore and the weather turns rough.
This guide covers six chartplotters I’ve personally used or tested extensively, ranging from budget-friendly options under $200 to premium multifunction displays. Whether you fish inland lakes, cruise coastal waters, or need a portable unit for your kayak, there’s a solution here that fits your boat and your budget.
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Garmin ECHOMAP UHD2 74sv
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Garmin Striker Vivid 4cv
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Simrad GO9
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Humminbird Helix 5 Chirp GPS G3
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Garmin ECHOMAP UHD2 54CV
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Garmin GPSMAP 79sc
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7-inch touchscreen
GT54 transducer with ClearVü and SideVü
Built-in Garmin Navionics+ charts
Wi-Fi connectivity for sharing
Force trolling motor integration
The Garmin ECHOMAP UHD2 74sv represents the sweet spot for small boat owners who want serious capability without stepping up to oversized displays. I installed this unit on my 18-foot center console last season and was immediately impressed by how the 7-inch screen provides enough real estate to see details without overwhelming a compact dash. The sunlight-readable display stays visible even during midsummer glare, something that plagues cheaper units.
What sets this model apart is the included GT54 transducer. The combination of traditional CHIRP sonar with ClearVü and SideVü scanning gives you three ways to see what’s beneath your boat. I’ve marked countless fish holding structure that I never would have found with traditional 2D sonar alone. The side imaging is particularly useful when scouting new areas, letting you see cover and structure off to the sides without driving directly over it.
The built-in Garmin Navionics+ coastal charts come preloaded on internal memory, not an SD card that you need to buy separately. This was a pleasant surprise since many competitors still rely on card-based mapping. The integration between charts and sonar creates a complete picture of your fishing grounds. I’ve found the GPS accuracy to be spot-on, with waypoints landing within feet of marked locations every time.
Garmin’s touchscreen interface is among the best in the marine industry. Menus make sense, screens transition smoothly, and I can adjust settings while running in chop without frustration. The Wi-Fi connectivity lets me share waypoints and sonar data with other Garmin units on board, which comes in handy when fishing with friends who also run Garmin electronics.
Installation took about two hours, mostly because I carefully routed the transducer cable. The included tilt and flush mounts give you options depending on your dash configuration. My only real complaint is the transducer cable length, which runs tight on boats longer than 15 feet. You may need an extension cable depending on your transom location.
The 7-inch display works perfectly on boats from 16 to 22 feet. Center consoles, bay boats, and small offshore boats benefit most from the screen size and feature set. If you run a trolling motor, the wireless Force integration is a nice bonus that eliminates extra cables.
This unit is overkill for kayaks or very small skiffs under 14 feet. The physical footprint and power requirements make more sense on boats with dedicated electrical systems. If you need something portable or battery-powered, look elsewhere.
4-inch color display
GT20-TM transducer with ClearVü
High-sensitivity GPS
Quickdraw Contours mapping
Vivid scanning sonar color palettes
The Garmin Striker Vivid 4cv proves that you don’t need to spend big money for reliable navigation. I mounted this unit on my trolling kayak for shallow water fishing and it has exceeded expectations. The 4-inch screen is compact but the color palette and resolution make it surprisingly readable, even when I’m positioned low to the water.
ClearVü scanning sonar is the standout feature at this price point. The high-frequency transducer delivers crisp images of structure and fish that rival units costing twice as much. I’ve marked submerged timber, rock piles, and drop-offs with confidence. The traditional CHIRP sonar fills in the gaps, giving you a complete picture of the water column.
The built-in GPS does more than just show your position. I’ve marked productive waypoints, created routes to navigate unfamiliar waters, and tracked my boat speed to match trolling patterns. The Quickdraw Contours feature lets you create custom depth maps as you fish, which is incredibly useful for uncharted lakes and backwaters.
Power consumption is remarkably low. I run this unit for six to eight hours on a small 12-volt battery without issue. The energy efficiency makes it ideal for kayaks, canoes, and small boats without extensive electrical systems. Durability has been impressive too – mine survived an accidental dunking when my kayak capsized last summer.
The tilt and swivel mount lets you position the screen for optimal viewing from different seating positions. I adjusted mine multiple times until finding the sweet spot. The buttons are large enough to operate with wet hands, and the menu system is straightforward enough that I rarely need to reference the manual.
Kayaks, canoes, jon boats, and small skiffs under 16 feet are perfect matches for this unit. The compact size, low power draw, and included transom mount make it ideal for portable or temporary installations. Anglers who fish from multiple small boats will appreciate how easily this transfers between vessels.
Large boats with multiple anglers need a bigger display that everyone can see from different positions. If you run offshore or need advanced networking capabilities, step up to a model with more features. The lack of side imaging also limits utility for serious structure fishermen.
9-inch touchscreen display
C-MAP DISCOVER charts included
83/200 kHz HDI transducer
Built-in GPS with Wi-Fi and NMEA 2000
DownScan Imaging with CHIRP sonar
Simrad’s GO9 brings big boat capability to small vessels with its 9-inch display and comprehensive feature set. I spent a month running this unit on a friend’s 20-foot bay boat and came away impressed by how much functionality Simrad packs into this compact package. The large screen makes split-screen views genuinely usable, letting you monitor charts, sonar, and engine data simultaneously.
The included C-MAP DISCOVER charts are a significant value add. These high-detail vector charts include custom depth shading, tide and current data, and bathymetric contours that reveal underwater structure in incredible detail. I found the chart presentation cleaner and more intuitive than some competing systems, with zoom levels that transition smoothly without cluttering the display.
Simrad’s sonar implementation impressed me with its clarity and detail. The HDI transducer combines traditional CHIRP with DownScan Imaging, creating crisp views of fish and structure directly beneath the boat. I marked fish holding on bottom composition changes that were invisible on older sonar systems. The auto-sensitivity adjustment works well, though serious anglers will still want to fine-tune settings for specific conditions.
Connectivity is where the GO9 really shines. NMEA 2000 integration lets you connect to compatible engines, fuel sensors, and other marine electronics. The built-in Wi-Fi mirrors your display to smartphones and tablets, which is surprisingly useful for checking position from anywhere on the boat. I particularly liked being able to view charts and sonar from the bow while fishing.
The touchscreen interface is responsive and logically organized. Menu navigation feels natural, and I was able to access most functions within my first trip on the water. There is a slight processing delay when switching between some screens, but it never interfered with real-time operation. The screen stays readable even in direct tropical sun, which is the ultimate test for any marine display.
Boats from 18 to 24 feet with enough dash space for a 9-inch display will benefit most from this unit. Center consoles, walkarounds, and small cabin boats gain significant capability from the multifunction features. Anglers who plan to expand their electronics over time will appreciate the networking and expansion options.
Very small boats under 16 feet lack the dash space and electrical capacity for this unit. If you need portability or primarily fish inland lakes, you can get by with a less expensive model. The 9-inch screen is also overkill if you always fish alone and sit close to the display.
5-inch color display
Dual Spectrum CHIRP Sonar
Humminbird Basemap with 10000+ lakes
AutoChart Live real-time mapping
Compatible with premium charts
Humminbird’s Helix 5 Chirp GPS G3 occupies the middle ground between basic fish finders and full-featured chartplotters. I installed this unit on my 16-foot jon boat for bass fishing and found it strikes a nice balance between capability and cost. The 5-inch screen is noticeably larger than the 4-inch options, making split-screen views actually usable for monitoring sonar and GPS simultaneously.
Dual Spectrum CHIRP Sonar is the real highlight here. The two-frequency mode lets you choose between wide coverage for finding fish and narrow mode for picking apart structure. I’ve found this flexibility invaluable when targeting bass around specific cover types. The Wide/Narrow modes essentially give you two different sonar views depending on what you’re trying to accomplish.
The Humminbird Basemap covers over 10,000 lakes plus continental U.S. coastlines. While not as detailed as premium chart options, it provides enough information for most inland fishing situations. I’ve used the basemap to navigate unfamiliar reservoirs and locate productive creek channels and drop-offs. The GPS tracking and waypoint marking work reliably for returning to productive spots.
AutoChart Live is a feature I didn’t think I’d use but now can’t live without. This function creates custom depth maps in real-time as you drive over water. I’ve mapped several small lakes that had no existing charts, revealing structure and contours that no one else knew about. The mapping draws directly to the screen, so you see the map developing as you fish.
The keypad control system works reliably in any conditions. Touchscreens can struggle with wet hands and spray, but physical buttons always respond. The menu system took some getting used to after years with Garmin products, but everything is logically organized once you spend time with the unit. Screen brightness is excellent, with the display staying readable even on bright sunny days.
Freshwater boats under 20 feet are perfect candidates for this unit. Bass boats, walleye boats, pontoon boats, and general-purpose fishing boats will find the features well-matched to inland fishing needs. Anglers who primarily fish lakes and rivers rather than coastal waters will get the most value from the included mapping.
Saltwater anglers who need detailed coastal charts will want to upgrade to premium mapping options. If you run offshore or need advanced networking, look at higher-end models. Very small boats might find the 5-inch screen excessive if simple depth finding is all you need.
5-inch keyed display
Garmin CHIRP traditional and ClearVü scanning sonars
Wi-Fi connectivity between compatible chartplotters
LakeVü g3 and BlueChart maps with Navionics data
High-contrast vivid color palettes
The Garmin ECHOMAP UHD2 54CV offers a compact alternative to touchscreen models while retaining most of the functionality. I tested this unit on a 17-foot skiff used for nearshore fishing and appreciated the keyed interface, which responds instantly regardless of water conditions. The 5-inch screen provides adequate viewing area without dominating a small console.
ClearVü scanning sonar delivers impressive detail for the price point. I’ve used this unit to identify bottom transitions, locate reef structure, and mark fish holding near the bottom. The high-contrast color palettes make it easier to distinguish targets from the background, especially in deeper water where sonar returns can look similar on older units.
The preloaded LakeVü g3 and BlueChart maps with integrated Navionics data provide solid coverage for most U.S. waters. I navigated the Intracoastal Waterway confidently using these charts, finding shoaling markers and bridge clearances accurately displayed. The combination of inland and coastal mapping makes this a versatile choice for anglers who fish both environments.
Wi-Fi connectivity between compatible chartplotters is a feature I initially dismissed but came to appreciate. When fishing with friends who also run Garmin ECHOMAP units, we can share waypoints and routes wirelessly. This eliminates the need to manually transfer data and ensures everyone has the same productive locations marked.
Small fishing boats from 14 to 19 feet benefit from the compact size and keyed interface. Skiffs, small center consoles, and freshwater boats that don’t need large displays are ideal matches. Anglers who prefer buttons over touchscreens will appreciate the physical controls.
Large boats with multiple anglers need bigger displays that everyone can view. If you primarily fish very small waters where GPS navigation isn’t critical, you could save money with a basic fish finder. Anglers who need side scanning or advanced networking should look at higher-end models.
Floating handheld design
Preloaded BlueChart g3 coastal charts
Supports GPS GLONASS Beidou Galileo QZSS SBAS
3-axis tilt-compensated electronic compass
19-hour battery life IPX6 water-resistant
The Garmin GPSMAP 79sc takes a different approach as a handheld chartplotter that doesn’t require permanent installation. I’ve carried this unit on everything from rental boats to kayaks to use as a backup navigation device. The fact that it floats provides peace of mind, and the rugged construction has survived being dropped on deck and submerged in water.
Preloaded BlueChart g3 coastal charts cover U.S. coastlines in impressive detail. I’ve used these charts for navigation in unfamiliar bays and found the accuracy reliable for avoiding hazards and marking productive fishing spots. The high-resolution display makes chart details readable even in bright conditions, though the small screen requires closer viewing than fixed units.
Battery life is exceptional at up to 19 hours from AA batteries. I’ve run this unit for multiple long days on the water without needing to replace batteries, which is more than I can say for some rechargeable units. The ability to carry spare batteries means you’re never without navigation on extended trips where charging isn’t an option.
The multi-constellation GPS support provides reliable positioning even in challenging conditions. I’ve tested this unit in narrow canyons and under heavy tree cover where older GPS units struggled, and the 79sc maintained solid position locks throughout. The 3-axis electronic compass works independently of movement, letting you get accurate heading readings while stopped.
However, the user interface leaves something to be desired. Despite having what looks like a touchscreen, it’s actually operated through buttons, and the menu system isn’t as intuitive as other Garmin products. There’s definitely a learning curve, and I found myself consulting the manual more frequently than with other units.
Kayaks, canoes, rental boats, and any vessel where permanent installation isn’t practical are perfect for this handheld unit. It also serves well as a backup navigation device for larger boats. Anglers who fish from multiple boats or travel to fish will appreciate the portability.
Primary navigation on boats over 20 feet is better served by fixed-mount units with larger displays. If you fish inland lakes exclusively, the coastal-only chart coverage is limiting. Anglers who need sonar capabilities should look at combination units rather than this GPS-only device.
Selecting the best chartplotters for small boats requires matching features to your specific needs. After installing electronics on dozens of vessels, I’ve learned that the right choice depends on several factors beyond just screen size and price.
Screen size is the most obvious consideration, but boat length isn’t the only factor. Consider how many people typically fish on board and where they’re positioned. A 4-inch screen works fine when you sit close, but becomes difficult for passengers to view from across the boat. As a general rule, boats under 15 feet can use 4-5 inch displays, 15-20 foot boats benefit from 5-7 inches, and boats over 20 feet should consider 7-9 inch screens.
Display type matters as much as size. Touchscreens offer intuitive navigation and can display more information in organized layouts. However, touchscreens struggle with wet hands and spray. Keypad controls work reliably in all conditions but require more menu drilling to access functions. Some boats benefit from touchscreen units with physical keypad overlays for the best of both worlds.
Sonar capabilities deserve serious consideration. Traditional CHIRP sonar works well for most depth finding and fish marking applications. ClearVü, SideVü, and DownScan imaging provide photo-like views of structure but come at higher price points. Determine how you fish – if you target specific structure like brush piles or reef edges, imaging sonar is worth the investment. If you mostly fish open water or depth breaks, traditional CHIRP may suffice.
Chart coverage and type affects your navigation experience. Built-in coastal charts work for most saltwater applications, while inland anglers need detailed lake maps. Consider whether your fishing takes place in covered waters or if you’ll need to purchase additional chart packages. Some units include premium mapping while others require separate purchases.
Mounting constraints on small boats can’t be overlooked. Measure your available dash space before purchasing, considering both the unit footprint and required wiring clearance. Flush mounts provide a clean look but require cutting holes. Bail mounts allow easier removal but sit higher on the dash. Some boats benefit from RAM mount systems that let you position the unit for optimal viewing and remove it for security.
Power requirements vary significantly between units. Basic fish finders draw minimal current and can run from small batteries for extended periods. Large touchscreen displays with multiple features require substantial electrical capacity. Ensure your boat can support the power draw, especially if you plan to run additional electronics from the same battery.
Transducer compatibility affects your sonar performance. Most units include transom-mount transducers that work for most small boat applications. However, hull material and deadrise angle may require specific transducer types. Through-hull transducers provide better performance at speed but require permanent installation. Consider your boat’s construction and how you typically fish when evaluating transducer options.
The best chartplotter for small boats depends on your specific needs, but the Garmin ECHOMAP UHD2 74sv is our top pick for boats 16-22 feet, offering a 7-inch touchscreen, excellent sonar, and preloaded maps. Budget-conscious anglers should consider the Garmin Striker Vivid 4cv, while the Simrad GO9 provides premium features for larger small boats up to 24 feet.
Key features include screen size appropriate for your boat length (4-5 inch for boats under 15 feet, 5-7 inch for 15-20 feet, 7-9 inch for larger boats), sunlight-readable display, GPS accuracy, CHIRP sonar capability, preloaded charts for your fishing area, waterproof construction, and appropriate mounting options. Consider keypad vs touchscreen controls based on your typical fishing conditions.
The Garmin Striker Vivid 4cv offers the best value under $200, providing ClearVü sonar, GPS waypoint marking, and Quickdraw mapping at an affordable price. The Humminbird Helix 5 Chirp GPS G3 delivers excellent mid-range value with Dual Spectrum CHIRP sonar and AutoChart Live mapping. For premium features, the Garmin ECHOMAP UHD2 74sv provides comprehensive capability at a competitive price point.
Garmin offers the most intuitive user interface and excellent mapping, making it ideal for anglers who value ease of use. Simrad provides premium features and superior networking for boaters who plan to expand their electronics system. Humminbird excels in freshwater fishing applications with innovative mapping features and strong sonar performance. All three brands offer quality products – choose based on your specific fishing needs and brand ecosystem preferences.
After testing these six chartplotters extensively across various small boats, the Garmin ECHOMAP UHD2 74sv stands out as the best overall choice for most small boat owners. The 7-inch screen hits the sweet spot between size and footprint, the sonar capabilities are excellent, and the preloaded mapping provides immediate value without additional purchases.
Budget-conscious anglers will find everything they need in the Garmin Striker Vivid 4cv, which delivers reliable performance at a price that won’t break the bank. Those needing premium features and maximum screen real estate should step up to the Simrad GO9, which brings big boat capability to small vessels.
The right chartplotter transforms your time on the water, providing confidence to explore new areas and return safely regardless of conditions. Consider your boat size, fishing style, and budget when making your decision. All six of these chartplotters for small boats have proven themselves on the water – choose the one that matches your specific needs and get ready to navigate with confidence in 2026.
