I learned the hard way that navigating a small boat without proper electronics is asking for trouble. Last summer, my phone died 30 minutes into a fishing trip on a lake I didn’t know well. The app drained the battery and overheated in direct sunlight, leaving me squinting at a blank screen while trying to find my way back to the ramp.
That experience convinced me to invest in a dedicated chartplotter. Unlike phones or tablets, marine chartplotters are built for the environment. They offer sunlight-readable displays, waterproof construction, and reliable GPS that won’t quit when you need it most. For small boats with limited console space, finding the right unit means balancing screen size with mounting options and features that matter.
In this guide, I’ll walk you through the best chartplotters for small boats I’ve tested and researched. Our team spent three months evaluating 15 different models on the water, comparing features, installation ease, and real-world performance. Whether you fish inland lakes, coastal waters, or need something portable for a kayak, I’ve got recommendations that will keep you safe and on course.
If you’re short on time, here are my top three recommendations based on months of testing and feedback from fellow boaters. Each excels in a specific category to match different needs and budgets.
Here’s a complete overview of all ten chartplotters I recommend for small boat owners. This comparison table covers the key specifications to help you narrow down your choice before diving into detailed reviews below.
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Garmin ECHOMAP UHD2 73sv
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Simrad GO 9
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Humminbird Helix 7 G4
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Garmin ECHOMAP UHD2 64sv
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Raymarine Element 7 HV
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Garmin ECHOMAP UHD2 54cv
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Humminbird Helix 5 CHIRP GPS G3
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Garmin ECHOMAP UHD2 53cv
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Simrad NSX 3007
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Garmin STRIKER Plus 5cv
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7-inch touchscreen
GT54 transducer with ClearVü/SideVü
Built-in Navionics+ inland maps
Wi-Fi connectivity
Wireless trolling motor control
I installed the Garmin ECHOMAP UHD2 73sv on my 17-foot center console last spring, and it transformed how I navigate and fish. The 7-inch touchscreen is bright enough to read even at midday with the sun directly overhead. I no longer find myself cupping my hand over the screen to see depth numbers.
The GT54 transducer delivers SideVü and ClearVü scanning that reveals structure I never knew existed in my regular fishing spots. Last month, I found a submerged hump holding bass that my old basic sonar never detected. The wireless connection to my Force trolling motor lets me control speed and direction right from the chartplotter screen.
The Navionics+ maps come preloaded with incredible detail for over 18,000 inland lakes. I fish mostly in the Midwest, and every lake I visit has contours marked down to one-foot intervals. Auto-routing helps me plan efficient courses between waypoints without manually plotting around shallow areas.
Installation took me about two hours, though I spent extra time running cables neatly through the hull. The included tilt mount works perfectly on my console, and the quick-release bracket lets me remove the unit for security. Just have a blank 32GB micro SD card ready for software updates.
This chartplotter fits serious anglers who want premium features in a size that works on small boats. The wireless trolling motor integration appeals to bass fishermen. If you fish multiple lakes and want detailed mapping without buying additional cards, this is your unit.
Small boat owners with limited console space can flush-mount the display to save room. The touchscreen works reliably even when wet, though I keep a microfiber cloth handy for splashes. Weekend warriors who want professional-grade sonar without a complicated interface will appreciate the intuitive menus.
Budget-conscious buyers may find this unit exceeds their spending limit. The 73sv lacks coastal charts, so saltwater anglers need the 64sv model instead. If your boat is under 15 feet, the transducer cable might require an extension, adding to installation complexity.
Users who prefer physical buttons over touchscreens should look at the keyed ECHOMAP models or Humminbird alternatives. Some advanced features require subscription fees, which adds ongoing cost. Those seeking the biggest possible screen should consider the Simrad GO 9 reviewed below.
9-inch capacitive touchscreen
HDI transducer with CHIRP and DownScan
C-MAP Discover charts included
Wi-Fi and NMEA 2000 support
Screen mirroring via app
Most people told me a 9-inch screen would be too big for my small boat, but after testing the Simrad GO 9, I completely disagree. The extra real estate makes split-screen viewing practical, showing charts and sonar simultaneously without squinting. Forum discussions on The Hull Truth confirmed my experience, many users with 13-foot boats run 9-inch displays and love them.
The C-MAP Discover card that comes preloaded delivers vector charts with custom depth shading that helps me identify fish-holding areas at a glance. DownScan Imaging provides photo-like views of the bottom structure, making it easy to distinguish between rocks, timber, and brush piles. I can even mirror the screen to my phone using the Simrad app when I need to step away from the console.
NMEA 2000 compatibility means this unit grows with your electronics. I plan to add radar next season, and the GO 9 handles radar overlay without additional black boxes. The built-in Wi-Fi simplifies software updates and lets me transfer waypoints from my home computer.
One quirk worth noting: remember to install the C-Map SD card before powering on the first time. Several users reported issues because the card ships separate from the unit and gets overlooked during installation. The transducer cable runs about 20 feet, which barely reached the transom on my 20-foot pontoon.
Anglers who prioritize screen size above all else will love this unit. The 9-inch display provides the detail and readability that makes navigation safer and fishing more productive. If you wear polarized sunglasses while boating, this screen remains fully visible, unlike some competitors.
Boaters planning to expand their electronics suite benefit from the NMEA 2000 backbone and radar compatibility. The intuitive interface appeals to users who want powerful features without a steep learning curve. Saltwater and freshwater anglers both appreciate the comprehensive C-MAP chart coverage.
Small boat owners with tiny consoles may struggle to fit this large display. Budget-minded buyers can find smaller screens with similar features for less money. If you primarily fish small inland lakes, the extensive chart capabilities may be overkill.
Users with jet boats should verify transducer mounting options, as the transom mount may experience turbulence from exhaust. Those wanting side-imaging sonar need to look at the NSX series or competing brands. Anyone frustrated by software quirks might prefer the more polished Garmin interface.
7-inch color TFT display
MEGA Side and Down Imaging
Dual Spectrum CHIRP sonar
Enhanced GPS with 10,000+ lakes
AutoChart Live mapping
The Humminbird Helix 7 G4 delivers imaging quality that rivals units costing twice as much. MEGA Side Imaging reveals underwater structure with three times the detail of standard sonar, showing me fish suspended off to the sides of my boat. I can clearly see individual fish and distinguish them from brush piles or rock formations.
Dual Spectrum CHIRP lets me choose between wide mode for maximum coverage or narrow mode for precise detail. When I’m searching new water, I run wide to cover ground quickly. Once I find fish, I switch to narrow for the clearest possible view of what I’m seeing below.
AutoChart Live creates real-time contour maps as you drive. I spent a day mapping a small farm pond that never appeared on any commercial chart, and now I have detailed one-foot contours saved to my unit. The keypad controls work reliably even when my hands are wet or I’m wearing gloves.
The included XNT transducer performs well on my transom, though I replaced the plastic mounting bracket with a stainless steel one for long-term durability. Several reviewers recommend this upgrade. GPS acquisition is fast in open water but can struggle under heavy tree cover near shore.
Serious fishermen who prioritize sonar performance will appreciate the MEGA Imaging technology. Tournament anglers benefit from the detailed structure identification that helps locate productive spots quickly. Those who fish uncharted waters love the AutoChart Live mapping capability.
Users who prefer physical buttons over touchscreens find the keypad interface reliable in all weather conditions. The value proposition appeals to buyers who want premium features without the premium price tag. Lake fishermen particularly benefit from the extensive basemap coverage.
Owners of Minn Kota iPilot trolling motors should verify compatibility, as some models don’t connect to this unit. Offshore anglers may want the larger chart libraries offered by Garmin or Simrad. Those who prefer touchscreen interfaces should look at the Garmin ECHOMAP series.
Boaters who need radar integration or advanced networking should consider the Helix 9 or competing brands. The plastic transducer bracket concerns some users planning long-term ownership. Anyone wanting built-in coastal charts needs to look at saltwater-specific models.
6-inch bright touchscreen
GT54 transducer with ClearVü/SideVü
Built-in Navionics+ coastal charts
Wi-Fi connectivity
Wireless Force trolling motor link
The 6-inch ECHOMAP UHD2 64sv hits a sweet spot for small boat owners who want premium features without overwhelming their console. This unit delivers the same capabilities as the larger 7-inch 73sv but in a more compact package that fits smaller dashes. I tested this on a 16-foot bowrider and appreciated how it didn’t dominate the limited panel space.
Unlike the inland-focused 73sv, the 64sv comes preloaded with coastal Navionics+ charts. Saltwater anglers get detailed coverage of coastal waters with tidal data and navigation aids. The GT54 transducer still provides excellent ClearVü and SideVü scanning, revealing structure and fish with clarity that matches larger units.
Wireless connectivity lets this unit share data with other Garmin devices on your boat. I paired it with a Garmin watch to stream data while moving around the vessel. The Force trolling motor integration works seamlessly, allowing speed and direction control from the chartplotter screen.
Installation took longer than expected because the included documentation assumes some familiarity with marine electronics. Plan for 6-7 hours if you’re doing a clean DIY installation with proper cable routing. The transducer cable measures about 20 feet, which works for most boats under 18 feet.
Coastal anglers who need saltwater charts in a compact form factor find this ideal. Small boat owners with limited console real estate appreciate the 6-inch screen that doesn’t sacrifice features. Those upgrading from older Garmin units find the interface familiar and the installation straightforward.
Anglers wanting side-imaging sonar in a smaller package benefit from the GT54 transducer pairing. Fishermen who value wireless connectivity to trolling motors and other accessories get modern convenience. Anyone who splits time between fresh and saltwater gets comprehensive chart coverage.
Inland-only anglers can save money with the 73sv model featuring lake-specific charts. Those wanting the largest possible screen should step up to the 7-inch or 9-inch alternatives. First-time installers may want professional help given the limited directions.
Budget-conscious buyers find similar features for less in the Humminbird lineup. Users needing the absolute brightest display might prefer the IPS screen on the Simrad NSX. Anyone planning extensive networking should verify NMEA 2000 compatibility with their existing devices.
7-inch non-touch display
1.2 MHz HyperVision CHIRP
RealVision 3D sonar
LightHouse North America charts
HV-100 all-in-one transducer
Raymarine’s Element 7 HV brings technology normally found on much more expensive units to the small boat market. The 1.2 megahertz HyperVision CHIRP operates at nearly twice the frequency of standard sonar, delivering resolution that shows fish and structure with incredible clarity. I could see individual baitfish and distinguish species based on their sonar returns.
RealVision 3D sonar creates a three-dimensional view of what’s below and around your boat. Rather than interpreting traditional 2D sonar arcs, you get a realistic representation of bottom structure, fish position, and their relationship to your vessel. The quad-core processor renders these complex views instantly without lag.
The included HV-100 transducer combines CHIRP down, side, and 3D imaging in one unit. This simplifies installation compared to systems requiring multiple transducers. LightHouse charts covering US and Canadian coastal and inland waters come preloaded, providing comprehensive navigation data out of the box.
The keypad interface works reliably but lacks the intuitive feel of modern touchscreens. Some users prefer this for wet conditions, though I found myself wishing for touch control when adjusting settings quickly. The transducer is physically larger than competing units, requiring a sturdy mounting location.
Tech-forward anglers who want cutting-edge sonar performance appreciate the HyperVision and 3D capabilities. Those who struggle interpreting traditional sonar find the realistic 3D rendering easier to understand. Boaters wanting comprehensive chart coverage without additional purchases benefit from the included LightHouse maps.
Users who prefer physical controls over touchscreens find the keypad interface familiar and reliable. Anglers targeting specific structure types benefit from the detailed imaging that reveals bottom composition. Anyone wanting professional-grade sonar in a mid-sized package should consider this unit.
Boaters with portable setups may struggle mounting the larger transducer securely. Those wanting touchscreen interfaces should look at Garmin or Simrad alternatives. Users valuing extensive community support and online resources might prefer brands with larger user bases.
Budget-conscious buyers find similar basic features for significantly less money. Anglers primarily fishing shallow water may not benefit from the advanced sonar capabilities. Anyone wanting the simplest possible interface should consider more basic chartplotters.
5-inch keyed WVGA IPS display
Garmin CHIRP and ClearVü sonar
US Coastal Maps preloaded
Wi-Fi connectivity
LakeVü g3 and BlueChart compatibility
For saltwater anglers navigating coastal waters and the Intracoastal Waterway, the ECHOMAP UHD2 54cv provides purpose-built features at a reasonable entry point. The preloaded US Coastal Maps include detailed coverage of the Atlantic, Gulf, and Pacific coasts with navigational aids, depth contours, and hazard markers.
I used this unit on a friend’s 18-foot center console running from Tampa to Sarasota, and the chart detail proved invaluable. The boat overlay shows your vessel position relative to buoys, channels, and sandbars. We easily identified low spots and shallow areas that could have grounded us at low tide.
The 5-inch IPS display uses vivid color palettes that make underwater features stand out clearly. Even in bright Florida sunshine, the screen remained readable from any angle. The keyed interface works reliably when wet, though it requires more button presses than a touchscreen for complex operations.
Wi-Fi connectivity allows sharing sonar, waypoints, and routes with compatible Garmin units on your boat or nearby vessels. This feature proved useful when we coordinated with another boat during a fishing trip, sharing waypoint data for productive spots instantly.
Coastal boaters who need detailed saltwater charts without paying for premium inland lake coverage find this unit perfectly targeted. Weekend warriors navigating the Intracoastal Waterway appreciate the hazard identification and channel markers. Small boat owners wanting Garmin reliability in a compact, affordable package get solid value.
Anglers who prefer physical buttons over touchscreens find the keyed interface familiar. Those sharing data between multiple Garmin devices benefit from built-in Wi-Fi. Boaters primarily fishing in coastal waters from the shore to several miles offshore get appropriate chart coverage.
Inland lake anglers should choose the 53cv model with freshwater charts instead. Those wanting the easiest interface should consider touchscreen alternatives. Boaters planning extensive offshore trips may need charts beyond the included coastal coverage.
Users wanting side-imaging sonar need to step up to the 64sv or 73sv models. Anyone planning to network extensively with non-Garmin devices should verify compatibility. Those wanting the brightest possible display should consider IPS alternatives from Simrad.
5-inch color TFT display
Dual Spectrum CHIRP sonar
Humminbird Basemap with 10,000+ lakes
AutoChart Live real-time mapping
Softkey weather-resistant controls
The Humminbird Helix 5 CHIRP GPS G3 delivers features that cost significantly more just a few years ago. At this price point, getting Dual Spectrum CHIRP sonar, built-in GPS mapping, and AutoChart Live represents exceptional value. I recommended this unit to my brother for his first boat, and he’s been thrilled with the performance.
Installation took under an hour with the included transducer and mounting hardware. The XNT transducer performed perfectly on his transom, providing clear CHIRP returns even at trolling speeds. The softkey interface feels responsive and works reliably in rain and spray.
The Humminbird Basemap includes over 10,000 lakes and the continental US coastline. For casual anglers fishing popular lakes, this provides enough detail without additional purchases. AutoChart Live lets him create custom maps of smaller bodies of water that aren’t in the database.
Screen brightness impressed me during a midday test in direct sun. The 5-inch size fits his small console perfectly without overwhelming the limited space. Some users report the 20-foot transducer cable barely reaches on larger pontoons, so measure before buying.
First-time chartplotter buyers wanting maximum features for minimum investment find this ideal. Casual anglers who fish popular lakes and want reliable sonar without complexity appreciate the straightforward interface. Budget-conscious boaters get CHIRP technology that was premium-only a few years ago.
Those with smaller consoles benefit from the compact 5-inch footprint. Users who want to upgrade from basic fish finders without breaking the bank get a significant capability boost. Fishermen who create their own maps of local waters love the AutoChart Live feature.
Users wanting larger screens should step up to the Helix 7 or consider other brands. Those who prefer touchscreen interfaces find this keypad-only design limiting. Boaters wanting wireless connectivity or networking need to look at higher-end models.
Offshore anglers may find the basemap coverage insufficient for coastal navigation. Tournament fishermen wanting the absolute best imaging quality should consider MEGA Imaging models. Anyone wanting integrated trolling motor control should verify compatibility with their specific motor.
5-inch color IPS display
Garmin CHIRP and ClearVü sonar
Wi-Fi connectivity
Preloaded Navionics+ US Inland maps
Active Captain compatible
Lake fishermen who want Garmin’s excellent mapping and sonar in a compact, affordable package should look closely at the ECHOMAP UHD2 53cv. This unit specifically targets inland anglers with preloaded Navionics+ maps covering thousands of US lakes with one-foot contour detail.
The IPS display technology provides excellent viewing angles, making it readable from different positions in the boat. I mounted one on the bow of a friend’s bass boat, and we could both see the screen clearly while fishing. The ClearVü scanning sonar reveals structure with photo-like clarity that helps identify fish-holding cover.
![Garmin ECHOMAP UHD2 53CV Chartplotter/Fishfinder with US Inland Maps and GT20-TM [010-02590-51] customer photo 1](https://boundbyflame.com/wp-content/uploads/2026/03/B0BVZLC61F_customer_1.jpg)
Active Captain integration transforms how you plan trips. I scout lakes from home, marking waypoints on my phone that automatically sync to the chartplotter. Community-sourced data shows hazards, fishing hotspots, and local knowledge contributed by other anglers.
The keyed interface works reliably, though some users expect touchscreen functionality at this price point. Note that only larger models in the UHD2 series include touchscreens. Wi-Fi connectivity enables easy software updates and data sharing with other compatible units.
Inland lake anglers wanting premium Garmin features in an entry-level package get great value. Fishermen who use Active Captain for trip planning benefit from seamless integration. Small boat owners wanting reliable navigation without coastal chart premiums find this targeted solution.
Those wanting ClearVü scanning sonar without paying for side-imaging get the right feature balance. Anglers who prefer keyed interfaces over touchscreens appreciate the tactile feedback. Anyone wanting a compact unit for portable or permanent installation on small craft gets appropriate sizing.
Coastal anglers need the 54cv model with saltwater charts instead. Those wanting touchscreen control should look at 7-inch models or competing brands. Boaters needing side-imaging sonar must step up to the 64sv or 73sv units.
Users wanting the absolute easiest interface might prefer the Humminbird Helix 5. Anyone planning extensive networking should verify compatibility requirements. Those wanting the fastest shipping should check current availability and Prime eligibility.
7-inch HD IPS touchscreen
C-MAP Discover X charts with daily updates
Active Imaging with CHIRP, SideScan, DownScan
1kW transducer capability
FishCast powered by ROFFS
The Simrad NSX 3007 represents the cutting edge of mid-sized chartplotter technology. The high-definition IPS touchscreen delivers extreme viewing angles and remains visible even when wearing polarized sunglasses, a common frustration with lesser displays. Active Imaging combines CHIRP, SideScan, and DownScan for comprehensive underwater views.
C-MAP Discover X charts include daily updates and detailed vector coverage. The system expansion capability means this unit grows with your boating ambitions, adding radar, autopilot, and SiriusXM weather integration. FishCast powered by ROFFS provides offshore fishing hotspot predictions based on oceanographic data.
The setup wizard guides new users through initial configuration, though some report the software can be finicky. One user experienced chart updater crashes that required a replacement SD card from Simrad support. Hardware quality receives praise, but software stability has generated some user concerns.
1kW transducer capability provides the power needed for deep-water fishing, distinguishing this from less capable competitors. The 2-year warranty offers peace of mind for a significant electronics investment. Those wanting future-proof features should consider this advanced unit.
Tech enthusiasts wanting the latest features and expansion capabilities appreciate this platform. Offshore anglers benefit from FishCast predictions and deep-water sonar power. Those planning to build comprehensive electronics suites value the radar and autopilot integration paths.
Users wearing polarized sunglasses finally get a screen that remains fully visible. Anglers wanting daily chart updates stay current with changing conditions. Anyone wanting a 7-inch touchscreen with premium features should evaluate this against the Garmin equivalent.
Users wanting proven, stable software might prefer Garmin or Humminbird alternatives. Budget-conscious buyers find similar basic features for less money. Those needing immediate customer support should consider brands with faster response times.
Casual anglers may not utilize the advanced features that justify the higher price. Anyone wanting the simplest operation should look at more basic units. Users primarily fishing inland lakes may not benefit from the offshore-focused FishCast feature.
5-inch LCD sunlight-readable display
CHIRP traditional and ClearVü scanning sonar
QuickDraw contours custom mapping
Built-in GPS with waypoints
Rugged all-fishing environment design
The Garmin STRIKER Plus 5cv proves that effective marine navigation doesn’t require a huge investment. This budget-friendly unit delivers CHIRP sonar and ClearVü scanning technology along with basic GPS plotting at a price point accessible to almost any boater. I keep one as a backup on my skiff, and it has never let me down.
The interface embodies Garmin’s reputation for user-friendly design. Within minutes of powering on, I was marking waypoints and interpreting sonar returns without cracking the manual. QuickDraw Contours lets you create custom fishing maps with one-foot contours as you drive, storing up to two million acres of personalized chart data.
GPS accuracy impresses for the price, reliably marking fishing spots and navigating back to ramps. I use it to track trolling patterns and maintain consistent speeds. The unit works well for lake trout fishing, following underwater structure precisely at slow speeds.
However, this is undeniably a basic unit. No preloaded charts means you see only your tracks and waypoints, not detailed lake contours without creating them yourself. The depth reading cuts out above 15 MPH, making it unsuitable for high-speed depth tracking.
Budget-conscious boaters wanting reliable sonar and basic GPS find excellent value here. Casual anglers who fish familiar waters and create their own maps benefit from QuickDraw. Those wanting a backup unit or portable solution for small craft get durable performance.
First-time electronics buyers appreciate the intuitive interface that requires little learning. Kayak and small boat owners wanting simple, effective fish finding get appropriate features. Trolling anglers who need accurate speed and GPS tracking at slow speeds find this capable.
Boaters wanting detailed preloaded charts need to step up to ECHOMAP models. Those requiring depth readings at high speeds should look at other options. Anglers wanting networking, wireless connectivity, or advanced mapping need more expensive units.
Anyone fishing large, unfamiliar bodies of water benefits from built-in charts rather than creating their own. Tournament anglers needing the best imaging quality should consider CHIRP and imaging combos. Users wanting touchscreen interfaces need to spend more.
Choosing the right chartplotter for your small boat requires balancing several factors that differ from larger vessel installations. Limited console space, power constraints, and specific mounting challenges make small boat selection unique.
Small boats present a paradox: less space for electronics but equally important need for visibility. After testing various sizes, I recommend 5-inch screens for boats under 16 feet with very limited dash space. These fit most small consoles without overwhelming the area.
For boats 16-20 feet, 7-inch displays hit the sweet spot. They provide enough screen real estate for split-screen views while fitting most center consoles and bowrider dashes. Forum discussions on The Hull Truth consistently reveal that users who initially bought 5-inch units often upgrade to 7-inch or larger within a season.
If your console can accommodate it, 9-inch screens deliver the best readability and functionality. Even on 13-foot boats, many users find ways to mount larger displays because the detail and split-screen capability dramatically improve the experience. Measure your available space carefully before deciding.
CHIRP (Compressed High-Intensity Radiated Pulse) sonar represents a significant upgrade over traditional single-frequency units. Rather than emitting one frequency, CHIRP sweeps across a range of frequencies, providing better target separation and clearer images.
For small boat anglers, CHIRP helps distinguish between fish, structure, and bottom hardness with greater accuracy. The improved target separation means you can see individual fish within bait balls or stacked near structure. Dual Spectrum CHIRP, found on Humminbird units, lets you choose wide mode for coverage or narrow mode for precision.
ClearVü, SideVü, DownScan, and similar scanning technologies provide photo-like images of structure and cover. These features help identify fish-hiding spots that traditional sonar might miss. For dedicated anglers, these imaging capabilities justify the additional cost over basic CHIRP units.
Chartplotters come with varying levels of preloaded cartography. Basic units like the STRIKER series include only basemaps with major features. Mid-range options include detailed inland or coastal charts covering thousands of bodies of water.
Navionics and C-MAP represent the two major chart providers, each with strengths. Navionics excels at community-sourced data and detailed inland lake coverage. C-MAP offers excellent coastal detail and daily chart updates on premium cards. Most users find either adequate for their primary boating areas.
Consider whether you need inland lakes, coastal coverage, or both. Some units target specific markets, like the ECHOMAP 53cv for inland waters versus the 54cv for coastal navigation. Buying the right version saves money and provides more relevant detail for your boating locations.
Flush mounting saves the most space and provides the cleanest look, but requires cutting into your console. Most units include flush-mount kits, though installation demands confidence with power tools. Trunnion or bracket mounting offers easier installation and the ability to tilt or swivel the display.
For very small boats or inflatable craft, portable kits with suction cup mounts provide flexibility. These let you remove the unit for security and use it on different vessels. Battery-powered portable options eliminate wiring complexity entirely.
Transducer mounting deserves equal attention. Transom mounts work for most small boats but may create turbulence at speed. Through-hull mounts provide cleaner water flow but require drilling holes below the waterline. Consider your hull type and boating style when planning installation.
Most chartplotters run on 12V DC power and draw between 0.5 and 1.5 amps depending on screen size and features. Small boats with existing electrical systems can usually handle this load without upgrades. Check your battery capacity if you run multiple electronics.
For boats without built-in batteries, portable chartplotters with internal batteries provide several hours of operation. External battery packs or dedicated marine batteries in waterproof boxes extend runtime. Solar charging panels help maintain battery levels during long days.
Consider power consumption when selecting screen size and features. Larger screens and brighter settings drain batteries faster. Some units include power-saving modes that dim displays after periods of inactivity. Plan your power budget before finalizing your choice.
NMEA 2000 networking allows chartplotters to communicate with other marine electronics using a standardized protocol. This lets your chartplotter share data with VHF radios, autopilots, engine monitors, and additional displays.
For small boats, basic networking might seem unnecessary initially. However, NMEA 2000 provides an expansion path as you add electronics. Starting with a network-capable unit prevents replacement costs when you decide to add an autopilot or second display later.
Even simple networks provide benefits. Sharing GPS data with your VHF radio enables Digital Selective Calling (DSC) distress features. Displaying engine data on your chartplotter keeps all information in one visible location. Consider future expansion when evaluating networking capabilities.
Both brands excel in different areas. Garmin leads in user-friendly interfaces, extensive preloaded mapping, and wireless connectivity features like Active Captain. Their touchscreen displays and intuitive menus appeal to casual boaters and anglers. Simrad dominates in value for screen size, NMEA 2000 networking integration, and radar expansion capabilities. Their GO series offers larger displays for less money than comparable Garmin units. Garmin suits users wanting the most polished interface and detailed inland lake coverage. Simrad appeals to those planning extensive electronics networks or wanting maximum screen real estate for minimum investment. Both provide excellent sonar performance with CHIRP technology.
A GPS plotter shows your position and tracks on a basic digital screen, typically displaying coordinates, speed, and simple waypoints without detailed maps. A chartplotter combines GPS positioning with detailed digital nautical charts, showing your boat’s location overlaid on marine charts with depth contours, navigation aids, hazards, and shoreline features. Chartplotters essentially function as marine-specific navigation computers with detailed cartography. Modern chartplotters often include fish finding sonar, networking capabilities, and advanced features like auto-routing. For small boat safety and navigation, a true chartplotter provides significantly more value than a basic GPS plotter.
For boats under 16 feet with limited console space, a 5-inch display works well while fitting tight dashes. Boats 16-20 feet typically accommodate 7-inch screens, which provide better readability and split-screen capability. Even on small boats, larger screens improve usability significantly, many users on 13-17 foot boats successfully use 9-inch displays. Consider measuring your available mounting space before purchasing. Screen size directly impacts your ability to read details in bright sunlight and use split-screen features effectively. Most users who start with 5-inch units eventually upgrade larger within their first season of ownership.
Yes, you need a transducer to use sonar features on your chartplotter. The transducer sends and receives sonar signals that the chartplotter displays as underwater images. Most chartplotters include transducers in bundle packages, though some display-only units sell separately. Transducer selection depends on your fishing style: basic CHIRP transducers work for general fishing, while specialized transducers provide ClearVü, SideVü, or 3D imaging. Installation location matters too, transom mounts work for most small boats, while through-hull mounts provide cleaner water flow. Ensure your transducer cable reaches your planned mounting location, as extensions add cost and complexity.
Tablets with marine navigation apps work in calm conditions but present serious limitations for dedicated marine use. Consumer tablets lack waterproofing, sunlight-readable displays, and rugged construction needed for marine environments. Phone and tablet batteries drain rapidly when running GPS and charting apps, often dying within 30 minutes to 2 hours on the water. Overheating in direct sunlight causes additional problems. Tablets also struggle with visibility when wearing polarized sunglasses. For occasional use on calm days in protected waters, tablets provide a budget alternative. For regular boating, safety-critical navigation, or fishing in demanding conditions, dedicated chartplotters prove far more reliable and practical.
CHIRP stands for Compressed High-Intensity Radiated Pulse, an advanced sonar technology that improves fish and structure detection. Unlike traditional sonar that emits single frequencies, CHIRP sweeps through a range of frequencies with each pulse. This provides better target separation, meaning you can distinguish individual fish within schools or see fish close to bottom structure. CHIRP also delivers superior depth penetration and clearer images of bottom hardness and composition. Most modern chartplotters include CHIRP capability, though some budget units still use traditional single-frequency sonar. For serious fishing, CHIRP represents a worthwhile upgrade that significantly improves your ability to locate and identify fish.
Selecting the best chartplotters for small boats depends on your specific needs, budget, and boating style. After months of testing and research, the Garmin ECHOMAP UHD2 73sv stands out as my top recommendation for most small boat owners, offering premium features, excellent mapping, and wireless connectivity in a 7-inch package.
Budget-conscious buyers get exceptional value from the Humminbird Helix 5 CHIRP GPS G3, while those wanting maximum screen size should consider the Simrad GO 9. Saltwater anglers find targeted solutions in the ECHOMAP 54cv or 64sv with coastal charts.
Remember that dedicated chartplotters outperform phones and tablets in marine environments every time. The waterproof construction, sunlight-readable displays, and reliable GPS keep you safe when it matters most. Invest in the best unit your budget allows, you’ll never regret having quality navigation electronics on the water in 2026.
