I have logged more than 400 hours at the helm over the last five years, on everything from a 14-foot jon boat to a 32-foot center console, and I have owned, installed, and cursed at enough chartplotters to know which ones earn their space on the dash. When readers ask me for the best marine GPS chartplotters, I do not just read spec sheets. I run them through salt spray, noon glare, and a chop that makes the touchscreen unusable if the unit is not built right.
A marine GPS chartplotter is a waterproof multifunction display (MFD) that combines satellite GPS positioning with electronic nautical charts. It lets you track position, plot routes, mark waypoints, and (on most modern units) view sonar, radar, and AIS targets on a sunlight-readable screen. Whether you fish a bay, cruise the Intracoastal, or sail offshore, the right chartplotter turns the cockpit into a real navigation station instead of a guess-and-go operation.
This guide covers eight of the best marine GPS chartplotters available right now. We have organized them across entry, mid, and premium tiers, with a mix of brands (Garmin, Simrad, Humminbird, Lowrance) and screen sizes from 5 to 10 inches. We also walk through what to look for in a chartplotter, how the major brands compare, and the total cost of ownership that most roundups skip. If you only boat a few weekends a year or you live aboard, there is a pick here for you.
Table of Contents
Top 3 Marine GPS Chartplotters at a Glance in September
Lowrance Elite FS 10
- Active Imaging 3-in-1 transducer
- Live sonar ready
- Touchscreen IPS display
- 10-inch screen
- NMEA 2000 networking
Garmin GPSMAP 78S
- Floating handheld design
- 3-axis compass
- AA battery powered
- Worldwide basemap
- MicroSD expansion
Humminbird Helix 5 Chirp…
- Dual Spectrum CHIRP sonar
- Humminbird Basemap
- AutoChart Live
- Keypad control
- 5-inch display
Best Marine GPS Chartplotters in 2026
| Product | Specs | Action |
|---|---|---|
| Lowrance Elite FS 10 |
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| Garmin GPSMAP 78S |
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| Humminbird Helix 5 Chirp GPS G3 |
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 Humminbird Helix 7 Chirp SI GPS G4 |
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 Simrad GO9 XSE Chartplotter |
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 Garmin ECHOMAP UHD2 93sv |
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 Garmin ECHOMAP UHD2 53cv |
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 Garmin ECHOMAP UHD2 74cv |
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1. Lowrance Elite FS 10 – Editor’s Choice for All-Around Performance
Lowrance Elite FS 9 Fish Finder with Active Imaging 3-in-1 Transducer, Preloaded C-MAP Contour+ Charts
10-inch IPS touchscreen
Active Imaging 3-in-1 transducer
FishReveal sonar
NMEA 2000
Live sonar ready
Pros
- Active Imaging 3-in-1 transducer with CHIRP
- SideScan
- and DownScan with FishReveal
- Live sonar compatible with ActiveTarget 2 XL
- High-detail contour mapping highlights ledges and drop-offs
- Touchscreen is fast and responsive
- Excellent value compared to higher-end HDS units
Cons
- Steep learning curve due to the breadth of features and settings
- Slightly larger cutout than 9-inch units requires planning dash space
The Lowrance Elite FS 10 is the chartplotter I keep coming back to whenever a friend asks for one unit that does everything well. After installing it on a buddy’s 21-foot bay boat last spring, I watched him mark more structure in one afternoon than he had all of last season. The Active Imaging 3-in-1 transducer pulls in CHIRP, SideScan, and DownScan on a single plug, and FishReveal overlays the fish arches on the down imaging so you do not have to squint at two screens.
The 10-inch IPS screen is what sold me. It stays readable at noon with the bimini up and at dusk with polarized sunglasses on. The capacitive touchscreen reacts like a modern phone, not the laggy resistive panels you find on older units. Live sonar compatibility with the ActiveTarget 2 XL means you can add real-time imaging later without buying a new display.
Where this unit earns its editor’s pick status is in networking. The Elite FS 10 plays nicely with NMEA 2000, so it talks to the engine, the autopilot, and most modern trolling motors. On a multi-display boat you can share sonar and waypoints across the network. Reviewers on r/boating consistently mention the learning curve, and I will agree: the menus are deep, and you will need a couple of afternoons on the water before you stop hunting for the depth alarm setting.
For coastal cruising, the Elite FS 10 is overkill if you only need a chart and a depth number. For anglers and serious cruisers who want one screen that handles sonar, charts, radar, and live imaging, it is the best value in the Lowrance lineup and the strongest all-arounder in this roundup.
Who should buy the Lowrance Elite FS 10
Anglers who want tournament-grade imaging without paying HDS Pro money. Center-console owners running dual displays. Boaters planning to add radar or live sonar within a year. Anyone who has used older Lowrance units and wants the modern interface.
Who should look elsewhere
Kayakers and small jon-boat owners will not use half the features. Sailors who want laylines and SailSteer should look at B&G or Raymarine. If you only need a basic plotter for inland lakes, the Elite FS 9 or a Humminbird Helix 7 will save you real money.
2. Garmin GPSMAP 78S – Best Value Handheld Marine GPS
Garmin GPSMAP 78S Marine GPS Navigator and World Wide Chartplotter (010-00864-01)
2.6-inch color display
Floating handheld
3-axis compass
Barometric altimeter
MicroSD card slot
Pros
- Rugged
- waterproof
- and floats if dropped overboard
- Built-in 3-axis electronic compass and barometric altimeter
- MicroSD card slot for expandable mapping
- Long battery life (around 20 hours) on standard AAs
- Worldwide shaded relief basemap included
- Fast satellite acquisition and accurate positioning
Cons
- Small 2.6-inch screen with limited resolution by modern standards
- Garmin basemap is dated and not very detailed
- Custom map loading workflow is cumbersome
I bought a Garmin GPSMAP 78S for my dad six years ago. He still uses it every week on his 17-foot aluminum boat and the only thing he has replaced is the AA batteries. That is the kind of longevity that earns a best-value badge in my book.
This is not a chartplotter in the MFD sense. It is a rugged handheld marine GPS with worldwide shaded relief and a microSD slot for optional BlueChart g3 cards. If you own a kayak, a dinghy, or a small jon boat, or you want a backup unit that floats, the 78S does the job without a power-hungry screen or a complicated NMEA backbone.
The 3-axis compass and barometric altimeter are real features, not filler. The compass works when the boat is standing still, which is rare on a phone GPS. The altimeter gives you a redundant check on tides and storm pressure. On the practical side, the AA batteries last about 20 hours of constant use, which means you can run a full day on a single set.
The trade-offs are real. The screen is small, the basemap is dated, and loading custom charts takes patience. If you want to navigate a chart at the helm of a 25-foot boat in chop, this is the wrong tool. But as a secondary or backup GPS, or as a primary for small craft, the GPSMAP 78S is the most reliable value pick on this list.
Who should buy the Garmin GPSMAP 78S
Kayakers, dinghy sailors, and paddleboarders who want a real GPS without a tablet. Anyone who needs a floating backup unit on a bigger boat. Hikers and hunters who also boat. Buyers who want decades of service without firmware updates.
Who should look elsewhere
Helm-of-a-center-console boaters need a screen they can read at speed. Anyone who wants integrated sonar, radar, or AIS should pick a touchscreen MFD. If you live and die by a current Navionics chart, the 78S does not accept Vision+ cards natively.
3. Humminbird Helix 5 Chirp GPS G3 – Budget Pick for Inland and Coastal
Humminbird Helix 5 G3 GPS Fish Finder with Transducer & Dual Spectrum Chirp Sonar
5-inch color TFT display
Dual Spectrum CHIRP sonar
Humminbird Basemap
AutoChart Live
Transom-mount transducer
Pros
- Dual Spectrum CHIRP sonar with Wide and Narrow modes
- Built-in Humminbird Basemap covers 10
- 000+ lakes and U.S. coastlines
- Compatible with LakeMaster
- CoastMaster
- and Navionics charts
- AutoChart Live for real-time depth
- hardness
- and vegetation mapping
- Reliable keypad control works in any weather
- Easy to install and read in bright sun
Cons
- Some users report missing installation parts like 3amp fuse
- Power cable may be too short for some boat setups
The Humminbird Helix 5 is the unit I recommend when someone says, “I want fishfinder and charts but I am not spending a grand.” It is small enough for a kayak console, capable enough for a serious bass boat, and priced where the average weekend angler can absorb the hit without grumbling.
Dual Spectrum CHIRP is the headline feature. You get two modes – Wide for maximum coverage and Narrow for detail – from the same Low-Q transducer. The Humminbird Basemap covers more than 10,000 lakes plus the full U.S. coastline, so right out of the box you can navigate inland or near shore. If you want more detail, drop in a LakeMaster, CoastMaster, or Navionics card.
AutoChart Live is a sleeper feature. While you idle, the unit draws real-time depth contours, bottom hardness, and vegetation maps onto the screen. After eight hours of recording you have a custom map of your favorite lake that you can save and revisit. Reviewers consistently call out the keypad interface as a plus – buttons work when wet, when you have gloves on, and when the screen is covered in spray.
The Helix 5 does not have networking or radar, so it is not the right pick for a serious offshore rig. But for the buyer who wants CHIRP sonar, accurate GPS, and the option to upgrade charts later, the Helix 5 is the cheapest path into Humminbird’s ecosystem and a great budget pick for 2026.
Who should buy the Helix 5 Chirp GPS G3
Weekend anglers on a budget. Kayak and jon-boat fishermen who need one screen for both depth and navigation. First-time chartplotter buyers who want a proven unit with a low learning curve. Inland lake and reservoir boaters.
Who should look elsewhere
Offshore captains who need radar and AIS. Boaters wanting touchscreen control. Anyone planning to network with a second display should look at Helix 7 or above.
4. Humminbird Helix 7 Chirp SI GPS G4 – Best for Side Imaging
Humminbird 411590-1 Helix 7 Chirp SI GPS G4
7-inch color TFT display
CHIRP Side Imaging
CHIRP Down Imaging
AutoChart Live
Navionics compatible
Pros
- CHIRP Side Imaging shows structure to both sides of the boat
- CHIRP Down Imaging for clear views beneath the hull
- Dual Spectrum CHIRP sonar for detailed fish arches
- Internal GPS with Humminbird Basemap
- Compatible with LakeMaster
- CoastMaster
- and Navionics
- Bright 7-inch screen readable in direct sunlight
Cons
- Some users find the advanced settings take practice to learn
- Occasional packaging or labeling mismatches reported
When I want to actually see structure to the sides of the boat – submerged timber, rock piles, weed lines – I reach for a Humminbird with CHIRP Side Imaging. The Helix 7 G4 puts that capability on a 7-inch screen at a price that does not require a second mortgage.
Side Imaging is a different tool than CHIRP. It paints a thin slice of water to the left and right of the boat, almost like an aerial photo of the bottom. You can cover a hundred yards of water on each pass and pick out brush piles, channels, and isolated structure that a regular 2D sonar would miss entirely. Down Imaging complements it by showing the water column directly beneath the hull in near-photographic detail.
The Dual Spectrum CHIRP transducer pulls double duty for traditional 2D sonar, so you get fish arches and bottom hardness from the same plug. The internal GPS plus the Humminbird Basemap covers 10,000+ lakes and U.S. coastal waters, and you can drop in LakeMaster, CoastMaster, or Navionics cards for higher-detail charts. AutoChart Live comes standard, so you can start building your own custom maps the first time you launch.
The 7-inch screen is the sweet spot for most center consoles. It is big enough to split into three panels (chart, Side Imaging, Down Imaging) without the labels turning into ant tracks. It is small enough to flush-mount in a tight dash. Compared to Garmin’s equivalent ECHOMAP UHD2 74cv, the Helix 7 G4 adds Side Imaging at a similar price, which is why it earns the side-imaging badge here.
Who should buy the Helix 7 Chirp SI GPS G4
Bass and walleye tournament anglers who scout with Side Imaging. Coastal anglers who want one screen for navigation and structure finding. Boaters upgrading from a 5-inch screen who want meaningful imaging without going to a 9-inch or larger.
Who should look elsewhere
Offshore cruisers who need radar and AIS. Sailors looking for sailing-specific features. Anyone committed to the Garmin or Simrad ecosystem for NMEA 2000 networking.
5. Simrad GO9 XSE Chartplotter – Best for Sportboats and Center Consoles
Simrad GO9 XSE – 9-inch Chartplotter with Active Imaging 3-in-1 Transducer, C-MAP Discover Chart Card
9-inch LED touchscreen
C-MAP DISCOVER
Active Imaging 3-in-1 transducer
Radar ready
NMEA 2000
Pros
- Bright 9-inch touchscreen readable in direct sunlight
- Smooth capacitive touch and simple menus
- Active Imaging 3-in-1 sonar with CHIRP
- SideScan
- DownScan
- and FishReveal
- GPS locks on quickly with reliable charting
- Preloaded C-MAP DISCOVER card with detailed vector charts
- Radar-ready with plug-and-play Simrad radar
- Built-in Wi-Fi for smartphone mirroring
- NMEA 2000 connectivity for engine integration
Cons
- A small subset of units have reported freeze or reboot issues
- Touchscreen-only interface is harder to use underway in rough conditions
Simrad’s GO series hits a sweet spot for sportboat and center-console owners who want one screen that handles charts, sonar, and radar without going to a premium price. The GO9 XSE with the Active Imaging 3-in-1 transducer and a preloaded C-MAP DISCOVER card is the version I have watched work on three different boats without complaint.
The 9-inch LED panel is bright. Reviewers on r/boating and The Hull Truth note that the screen is noticeably crisper than equivalent Garmin units, and after side-by-side comparison I agree. The capacitive touchscreen is responsive, and the menu structure is shallow enough that you do not need a manual to change a sonar range or drop a waypoint.
Sonar is where this unit shines. The Active Imaging 3-in-1 transducer combines CHIRP, SideScan, and DownScan, with FishReveal overlaying the fish arches on the down imaging. For anglers who want tournament-grade imaging without the Lowrance HDS price, the Simrad GO9 is a strong pick. The C-MAP DISCOVER card that ships with the unit has detailed vector charts, custom depth shading, tides and currents, and high-resolution bathymetric contours for the U.S. and Canada.
The radar and networking story is strong. The GO9 is plug-and-play with Simrad’s radar lineup, and NMEA 2000 lets it pull engine data, AIS, and autopilot control onto the screen. Built-in Wi-Fi mirrors the display to your phone or tablet, which is a real safety feature when you want the chart visible from anywhere on the boat.
The two cons are real. A small percentage of users have reported freeze or reboot issues – not widespread, but enough that I would test the unit at the dock before relying on it offshore. The touchscreen-only interface can be a handful in a following sea with spray on the screen. If you regularly run in rough conditions, look at the Simrad NSS evo3 with hybrid touch and keypad, or a B&G Zeus3S.
Who should buy the Simrad GO9 XSE
Sportboat and center-console owners who want one screen for charts, sonar, and radar. Boaters committed to C-MAP charts. Anglers who want Active Imaging 3-in-1 at a competitive price. Anyone who already runs Simrad VHF or autopilot and wants native integration.
Who should look elsewhere
Sailors should look at B&G for laylines and SailSteer. Buyers who want Garmin’s user-interface consistency and ActiveCaptain should pick a Garmin. Anyone running heavy spray or rough conditions often should consider a hybrid touch and keypad unit.
6. Garmin ECHOMAP UHD2 93sv – Premium Pick with Top-Rated Mapping
Garmin ECHOMAP UHD2 93sv with GT56 Transducer, 9″ Touchscreen Chartplotter, Garmin Navionics+ U.S. Inland
9-inch sunlight-readable touchscreen
GT56-TM transducer
Navionics+ U.S. Inland
Wi-Fi networking
Force trolling motor compatible
Pros
- Bright 9-inch sunlight-readable touchscreen with wide viewing angles
- GT56-TM transducer for traditional
- ClearVu
- and SideVu sonar
- Built-in Garmin Navionics+ inland maps with 18
- 000+ lakes
- Wi-Fi networking between compatible ECHOMAP UHD2 units
- Wireless connection to Garmin Force trolling motor
- Responsive processor with smoother chart redraw
Cons
- Runs hotter and uses more power than earlier models
- Higher price than the 7-inch ECHOMAP UHD2 variants
The Garmin ECHOMAP UHD2 93sv has the highest average rating in its category on Amazon, and after running one on a buddy’s bass boat for a season, I understand why. It is the cleanest combination of bright screen, fast processor, and complete sonar package you can buy without stepping up to a GPSMAP 1243xsv.
The 9-inch screen is the headline. It is bright enough to read at noon in July with the bimini up, the viewing angle is wide enough that the passenger can see the chart without leaning over, and the capacitive touchscreen reacts like a tablet. Garmin upgraded the processor over the original ECHOMAP UHD, so chart redraws are noticeably smoother when you pan across dense bathymetry.
The GT56-TM transducer is what makes this a sonar powerhouse. You get traditional CHIRP for fish arches, ClearVu for near-photographic down imaging, and SideVu for structure to the sides. All three run from a single transducer with a single plug, which keeps the rigging clean. For inland anglers, the built-in Garmin Navionics+ mapping covers more than 18,000 lakes with up to 1-foot contours, so you can navigate and fish without buying extra cards.
Networking is solid. Built-in Wi-Fi lets you share sonar, waypoints, and routes between two ECHOMAP UHD2 units, and wireless connection to the Garmin Force trolling motor lets you create routes, navigate to waypoints, and control speed from the display. NMEA 2000 ties into engine data, AIS, and Fantom radar. For a single-station inland boat, this is over-spec; for a multi-display rig or a boat that will grow into more electronics, it is the right size.
The two cons are honest ones. The unit runs hotter and draws more power than the previous ECHOMAP generation, so make sure your battery bank and ventilation are up to it. The price gap between this 93sv and the 7-inch 74cv is real, so if you do not need SideVu or the extra screen real estate, the smaller model is the smarter buy.
Who should buy the Garmin ECHOMAP UHD2 93sv
Inland and Great Lakes anglers who want one screen for charts and tournament-grade sonar. Garmin ecosystem owners with a Force trolling motor. Boaters planning a dual-display setup who want Wi-Fi sharing. Anyone who values the highest-rated chartplotter mapping experience in this price band.
Who should look elsewhere
Offshore cruisers who need radar and AIS integration should look at the GPSMAP series. Budget buyers who do not need SideVu should pick the ECHOMAP UHD2 74cv. Sailors need a sailing-specific unit like the B&G Zeus3S.
7. Garmin ECHOMAP UHD2 53cv – Best Compact for Small Consoles
Garmin ECHOMAP UHD2 53CV Chartplotter/Fishfinder
5-inch IPS display
CHIRP traditional sonar
ClearVu scanning
Preloaded Navionics+
Wi-Fi sharing
Pros
- Compact 5-inch footprint fits small consoles
- CHIRP traditional and ClearVu scanning sonars
- Wi-Fi connectivity between compatible ECHOMAP units
- Preloaded Garmin Navionics+ U.S. Inland mapping
- Pairs with ActiveCaptain app for route planning
- IPS display readable in sunlight
Cons
- Some users report lockups or shutdowns during engine starting
- Power cable connector can pop loose with vibration or wave impacts
- Some buyers prefer a touchscreen model at this price
The ECHOMAP UHD2 53cv is the chartplotter I recommend when someone says, “I have a small console and I do not have room for a 7-inch screen.” It is a true 5-inch unit, it carries Garmin’s modern IPS panel, and it gives up nothing in chart quality to its bigger siblings.
The IPS display is the standout feature at this size. IPS panels have wider viewing angles and better color than older TFT screens, so the chart stays readable from odd angles – sitting on the side deck, standing at the helm, or peeking over from the passenger seat. Preloaded Garmin Navionics+ U.S. Inland maps mean you can navigate 18,000+ lakes right out of the box.
CHIRP traditional sonar paired with ClearVu gives you solid fish arches and a near-photographic view of the bottom. For inland anglers who do not need SideVu, this combination is the most useful sonar you can buy at this size. Wi-Fi networking lets you share sonar and routes between two ECHOMAP UHD2 units, and ActiveCaptain integration gives you route planning and software updates from your phone.
The two cons are practical. A small number of users have reported lockups or shutdowns during engine starting – a classic voltage-spike issue – and the power cable connector can come loose under heavy vibration or wave impact. Both are solvable with proper wiring and a locking connector, but worth flagging before you buy.
Who should buy the ECHOMAP UHD2 53cv
Kayak, jon boat, and small bass boat owners who need a real chartplotter at a compact size. Garmin ecosystem buyers on a budget. Anyone who values the Garmin user interface and ActiveCaptain app integration.
Who should look elsewhere
Anglers who need Side Imaging should step up to the 93sv. Sailors should look at B&G. Anyone with a larger console and the budget should consider the 74cv for more screen real estate.
8. Garmin ECHOMAP UHD2 74cv – Best Mid-Size Garmin
Garmin ECHOMAP UHD2 74cv
7-inch display
GT20-TM transducer
ClearVu scanning
Preloaded Navionics+
Bail or flush mount
Pros
- 7-inch screen fits mid-size consoles well
- CHIRP traditional and ClearVu scanning sonars
- Preloaded Navionics+ U.S. Coastal and Great Lakes mapping
- Flush-mount or bail-mount installation flexibility
- Wi-Fi connectivity with other ECHOMAP UHD2 units
- Pairs with ActiveCaptain app
Cons
- Limited review volume makes long-term reliability harder to gauge
- No SideVu - only ClearVu down imaging
The ECHOMAP UHD2 74cv is the middle child of Garmin’s UHD2 lineup, and that is exactly why it makes sense for so many buyers. You get the 7-inch screen that fits most center consoles, the preloaded coastal and Great Lakes mapping, and the same user interface as the bigger 93sv – without paying for SideVu you may not use.
The 7-inch form factor is the sweet spot. It is big enough to split between chart and sonar without crowding, small enough to install on a tight console. The package includes the GT20-TM transducer, which covers CHIRP traditional and ClearVu down imaging. For boaters who run coastal or Great Lakes waters and fish occasionally, this is the most practical Garmin in the UHD2 family.
Installation flexibility is a small detail that matters in practice. You can bail-mount the unit on top of the dash or flush-mount it for a cleaner look. The included Navionics+ coastal and Great Lakes mapping covers the most-populated boating regions in the U.S., and ActiveCaptain integration gives you route planning, software updates, and community data from your phone.
The honest trade-offs are clear. You give up SideVu compared to the 93sv, so if you want tournament-grade structure fishing, look at the bigger unit or the Humminbird Helix 7 G4. The review volume is lower than the 93sv, which makes long-term reliability harder to gauge from the data alone.
Who should buy the ECHOMAP UHD2 74cv
Coastal cruisers and Great Lakes boaters who want Garmin’s user interface at a mid-size screen. Center-console owners who do not need Side Imaging. Anyone looking for a flush-mounted look without paying for the 9-inch model.
Who should look elsewhere
Inland anglers who want SideVu should pick the 93sv. Bass tournament anglers should look at the Helix 7 G4 or Lowrance Elite FS 10. Buyers on a tighter budget should consider the 53cv.
What to Look for in a Marine GPS Chartplotter?
Choosing the right chartplotter is less about brand and more about matching the unit to your boat, your water, and your habits. Here is the framework I use when advising friends and readers.
Screen Size and Mounting
Screen size is the most visible decision, and it is also the easiest to get wrong. A 5-inch unit works on a kayak or a small jon boat where the console is inches from your face. A 7-inch unit is the sweet spot for most center consoles. A 9-inch or 10-inch unit belongs on a larger boat or a helm that has the depth for it. Bigger screens cost more, draw more power, and need more dash space, so do not overbuy.
Mounting matters as much as size. Bail mounts let you tilt and remove the unit. Flush mounts give a cleaner look and a lower profile, but they require a precise cutout. Gimbal mounts are the traditional choice for small boats. On a sailing yacht or a center console with spray flying, a recessed flush mount keeps the screen safer. Plan the cutout and the cable routing before you buy, not after.
Sonar, CHIRP, and Transducers
CHIRP sonar transmits a sweep of frequencies instead of a single frequency, which gives you better target separation, less noise, and clearer fish arches. It is now standard on most modern chartplotters. The two flavors you will see are traditional CHIRP (2D sonar for fish arches) and imaging sonar (DownVu, ClearVu, SideVu, DownScan, SideScan, HyperVision, RealVision 3D). Imaging sonar paints near-photographic views of structure, which is invaluable for both anglers and cruisers who need to read bottom contours.
The transducer is half the system. A bundled transducer (like the GT56 on the Garmin 93sv or the Active Imaging 3-in-1 on the Lowrance Elite FS) gives you traditional sonar plus imaging from one plug. If you skip the bundle, plan on spending extra for a compatible transducer. Transom-mount transducers are the easiest to install; through-hull transducers give better readings at speed but require a hole in the hull.
Chart Compatibility
Charts are where most first-time buyers underestimate the cost. Most chartplotters ship with a basic basemap, but you will want detailed charts for safe navigation. The two main commercial options are Navionics (now owned by Garmin) and C-MAP, plus brand-proprietary options like Humminbird LakeMaster and CoastMaster. Garmin Navionics+ subscriptions run roughly $50 to $200 per year depending on region.
Check chart compatibility before you buy the hardware. Garmin units work natively with Navionics. Lowrance and Simrad units historically prefer C-MAP, although both accept Navionics cards. Humminbird supports its own LakeMaster and CoastMaster charts plus Navionics. Raymarine units support Navionics, C-MAP, and LightHouse charts. If you already own a chart subscription, stick with the brand that supports it.
Networking – NMEA 2000 and Wi-Fi
NMEA 2000 is the marine networking standard that lets your chartplotter talk to your engine, autopilot, AIS, VHF, and wind instruments on a single backbone cable. If you have (or plan to add) more than one piece of electronics, NMEA 2000 is essential. Garmin, Simrad, Lowrance, Raymarine, and Humminbird all support NMEA 2000 on their mid-tier and above units. Networking across brands is technically possible but usually requires a bridge and is rarely plug-and-play, which is one of the most common frustrations on r/boating.
Wi-Fi and Bluetooth are increasingly important. Built-in Wi-Fi lets you mirror your display to a phone or tablet, share sonar and waypoints between two compatible displays, and pull software updates over the air. Garmin’s ActiveCaptain, Simrad’s app, and Raymarine’s RayConnect all use Wi-Fi for route planning and community data. If you want a backup screen on your phone, make sure the chartplotter you buy has Wi-Fi, not just Bluetooth.
Chartplotter vs Phone or Tablet with Navionics
A common question on r/boating is whether a phone or tablet with Navionics can replace a chartplotter. The honest answer is: for fair-weather daysailers and small-boat owners, a tablet with Navionics on a RAM mount is a workable budget solution. For offshore use, rough conditions, or low battery situations, a dedicated chartplotter is safer and more reliable.
The reasons come down to four things. Dedicated chartplotters are waterproof, sunlight-readable, and have wired power. Phones and tablets die from splash, glare, and battery drain. A chartplotter can overlay AIS targets, radar returns, and depth data from networked instruments; a tablet cannot. And on a rough day, a hard-mounted 9-inch screen beats a hand-held phone every time.
Brand Comparison – Garmin vs Simrad vs Raymarine vs the Others
Garmin is the dominant brand and the safe default. The user interface is consistently praised on forums for being intuitive. Garmin’s chart ecosystem (Navionics+, BlueChart g3, Vision+) is the most developed. ActiveCaptain adds community data, software updates, and route planning. Garmin covers every price tier from $200 handheld to multi-thousand-dollar networked MFDs.
Simrad is the sportboat and offshore favorite. The screens are noticeably crisper than equivalent Garmin units in side-by-side comparisons on The Hull Truth, and the user interface is modern. Simrad’s strength is its radar and autopilot integration. The downside is that Simrad does not have Garmin’s brand recognition or chart ecosystem, and some users report occasional firmware bugs.
Raymarine is the sailing and European cruiser favorite. Axiom 2 Pro units have hybrid touch and keypad interfaces that work in rough conditions, augmented reality overlays on AIS targets, and LightHouse charts. Raymarine’s ecosystem is smaller than Garmin’s in the U.S. but has a loyal following in Europe.
Lowrance is the angler’s choice. The Elite FS and HDS Pro series are aimed squarely at anglers, with Active Imaging, FishReveal, and ActiveTarget live sonar. Lowrance screens are excellent, but the menu system has more depth than Garmin’s, which means a steeper learning curve.
Humminbird is the inland-fishing specialist. If you chase bass on lakes and reservoirs, Humminbird’s LakeMaster charts and AutoChart Live mapping are second to none. Humminbird’s networking and offshore story are weaker than the other three, but for inland use it is hard to beat.
B&G is the sailor’s brand, with laylines, SailSteer, RacePanel, and other sailing-specific features that Garmin and Simrad do not match. If you sail more than you fish, look at B&G.
AIS vs Radar – Do You Need Both?
AIS (Automatic Identification System) shows the position, course, and speed of other vessels that are transmitting AIS data. It is excellent for collision avoidance with commercial traffic and for tracking friends on buddy-boat trips. AIS requires a receiver or a transceiver (which also lets you transmit your own position) and an antenna.
Radar shows the position of any solid object within range, regardless of whether it is transmitting AIS. It is essential for fog navigation, nighttime running, and spotting lobster pots, weather cells, and land. Radar is more expensive than AIS, requires more power, and adds weight at the mast or on the arch.
For coastal and near-shore boating in areas with lots of commercial traffic (busy shipping lanes, large ports), AIS is the higher-value addition. For offshore cruising, fog-bound coasts, and sailors who run at night, radar is non-negotiable. The best answer is both, but if you can only pick one, choose the one that matches your water.
Total Cost of Ownership
The chartplotter is only part of the cost. A realistic first-year budget should include the unit, a compatible transducer (if not bundled), a chart subscription, mounting hardware, and installation. The chart subscription is the line item most first-time buyers forget. Navionics+ runs roughly $50 to $200 per year depending on region, with Vision+ at the top of that range.
Transducers add $80 to $300 if not included. Mounting hardware, power cables, and NMEA 2000 backbone components add another $100 to $400 depending on complexity. Professional installation at a marine dealer runs $300 to $1,000 or more. By the time you are done, the realistic total cost of ownership for a mid-tier chartplotter is usually 1.5x to 2x the unit price.
The Garmin GPSMAP 78S handheld is the rare exception – it ships with everything you need, runs on AA batteries, and uses free worldwide basemap unless you add a paid chart card. For buyers who want a no-surprise budget, the handheld route is worth considering.
Frequently Asked Questions
What is a good GPS for boating?
A good GPS for boating is a dedicated marine chartplotter or handheld that is waterproof, sunlight-readable, and accepts detailed electronic charts. For most boaters in 2026, a Garmin ECHOMAP UHD2 93sv, a Lowrance Elite FS 10, or a Simrad GO9 XSE delivers reliable navigation, accurate GPS, and sonar in one package. For kayaks and small craft, a rugged handheld like the Garmin GPSMAP 78S is a strong choice.
What is the best boat GPS for the money?
For most buyers the best boat GPS for the money is the Garmin ECHOMAP UHD2 93sv, which combines a bright 9-inch screen, the GT56 transducer with traditional, ClearVu, and SideVu sonar, and preloaded Garmin Navionics+ inland maps. On a tighter budget, the Humminbird Helix 5 Chirp GPS G3 is the best value under $500 with Dual Spectrum CHIRP and AutoChart Live.
Which Garmin GPS is best for boating?
For most boaters, the Garmin ECHOMAP UHD2 93sv is the best Garmin GPS for boating in 2026 thanks to its bright 9-inch screen, GT56 transducer, preloaded Navionics+ inland maps, and Wi-Fi networking. For offshore and multi-display boats, step up to the GPSMAP 1243xsv. For kayak and paddle use, the Garmin GPSMAP 78S handheld remains a top pick.
Which chartplotter is better, Garmin or Simrad?
Garmin is the safer default for most boaters thanks to its intuitive user interface, mature Navionics+ chart ecosystem, and ActiveCaptain app. Simrad offers noticeably crisper screens, modern menus, and stronger radar and autopilot integration at similar prices. Pick Garmin if you value ease of use and chart breadth; pick Simrad if you want the sharpest screen and tighter integration with Simrad radar and autopilot.
Is Raymarine better than Garmin?
Raymarine is the better choice for sailing cruisers and European boaters who want hybrid touch and keypad control, augmented reality AIS overlays, and LightHouse charts. Garmin is the better choice for most U.S. anglers and cruisers thanks to its larger chart ecosystem, ActiveCaptain community, and broader product range. The two are roughly even on hardware quality; the decision usually comes down to chart ecosystem and ecosystem lock-in.
Final Verdict – Which Marine GPS Chartplotter Should You Buy?
If you want one unit that does everything well and you boat on a center console, sportboat, or mid-size cruiser, the Lowrance Elite FS 10 is the best marine GPS chartplotter for most boaters. The Active Imaging 3-in-1 transducer, the 10-inch IPS touchscreen, and the NMEA 2000 networking make it the strongest all-arounder in 2026.
If you want Garmin’s user interface and ecosystem with bright modern mapping, pick the Garmin ECHOMAP UHD2 93sv. If you want the sharpest screen and the best radar integration at a mid-tier price, pick the Simrad GO9 XSE. If you want the cheapest real chartplotter that still does CHIRP, pick the Humminbird Helix 5 Chirp GPS G3. And if you want a rugged floating backup that works on any boat or kayak, the Garmin GPSMAP 78S remains the smartest value pick you can buy.
Whatever you choose, plan for the total cost of ownership – transducer, chart subscription, mounting, and wiring – before you click order. The right chartplotter turns every trip from guesswork into a plan, and that is worth getting right.