Car Electronics

The Best Marine GPS Units & Chartplotters

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Our picks are based on Amazon bestseller rankings, verified customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.

Navigating the open water safely and efficiently relies heavily on accurate positioning and clear charting. A high-quality marine GPS unit or chartplotter is an essential tool for any boater, whether for recreational cruising, fishing, or offshore passage. Investing in the right device ensures peace of mind and enhances your overall experience on the water.

SaleNo. 1
Garmin GPSMAP 79sc, Marine GPS Handheld Preloaded with BlueChart g3 Coastal Charts, Rugged Design and Floats...
  • Rugged, floating, water-resistant (IPX6 — unit level only) handheld GPS with a high-resolution color display and scratch-resistant, fogproof glass.Special Feature:Designed to Float; Accurate Tracking; Increased Memory; Built-in Compass; BlueChart...
  • Increased memory to save and track 10,000 waypoints, 250 routes and 300 fit activities
  • Supports multiple satellite constellations (GPS, GLONASS, Beidou, Galileo, QZSS and SBAS) for reliable tracking around the world
  • Includes preloaded BlueChart g3 coastal charts
  • Built-in 3-axis tilt-compensated electronic compass shows heading while standing still
  • Barometric altimeter tracks changes in pressure to pinpoint your precise altitude
  • Battery life: up to 20 hours in GPS mode
No. 2
C-MAP Reveal X - US Lakes North West, Map Card for Marine GPS chartplotters
  • FULL- FEATURED VECTOR CHARTS: Making navigation easy by giving you accurate, up-to-date vector chart detail derived from official Hydrographic Office information
  • HI-RES BATHYMETRY LAYER - Helps you identify shallow areas, drop offs, ledges, holes or humps. Now includes the very best of C-MAP HRB data, with integrated Genesis social map data
  • SUBSCRIPTION-FREE AUTOROUTING - Automatically plot the shortest, safest route based on detailed chart data and your personalized vessel information
  • SHADED RELIEF: Bring the world around you to life, with 3D rendered land and underwater elevation – including areas of Ultra-High-Res Bathymetric imagery – a game-changer for anglers and divers
  • CUSTOM DEPTH SHADING: Set a clear safety depth, maintain a paper-like view or create your own custom shading
  • COMPATIBILITY: This REVEAL X Chart is only compatible with the latest Simrad and B&G chartplotters running NEON
  • INSTALLATION: This product comes programmed on a Micro-SD fitted in a SD card, most chart plotters come with a Micro SD card reader. To use this chart the Micro-SD card needs to be removed from the SD adapter
No. 3
Garmin GPSMAP 79s, Marine GPS Handheld with Worldwide Basemap, Rugged Design and Floats in Water
  • Rugged, floating, water-resistant (IPX6 — unit level only) handheld GPS with a high-resolution color display and scratch-resistant, fogproof glass
  • Increased memory to save and track 10,000 waypoints, 250 routes and 300 fit activities
  • Supports multiple satellite constellations (GPS, GLONASS, Beidou, Galileo, QZSS and SBAS) for reliable tracking around the world
  • Includes worldwide basemap
  • Built-in 3-axis tilt-compensated electronic compass shows heading while standing still
  • Barometric altimeter tracks changes in pressure to pinpoint your precise altitude
  • Battery life: up to 20 hours in GPS mode
No. 4
Garmin GPSMAP 78 2.6-Inch Marine GPS Navigator and Worldwide Chartplotter
  • battery: 2 aa batteries (not included); nimh or lithium recommended
  • memory: 1. 7 gb
  • display resolution: 160 x 240 pixels
  • "display size: 1. 43" x 2. 15"; 2. 6" diagonal"
  • "physical dimensions: 2. 6" x 6. 0" x 1. 2"
  • marine-friendly handheld with high-sensitivity gps receiver and 2. 6-inch color tft display
  • perfect for boating/watersports-waterproof to ipx7 standards; floats in water
  • built-in worldwide basemap; microsd card slot for loading additional maps
  • get a detailed analysis of your activities and send tracks to your outdoor device using garmin connect
  • supports geocaching gpx files for downloading geocaches and details straight to your uni
No. 5
Garmin quatix® 7 Standard Edition, Marine GPS Smartwatch, Tide Changes and Anchor Drag Alerts, Waypoint...
  • Rugged, sophisticated design features an always-on 1.3” display, stainless steel bezel, buttons, rear case and QuickFit band system
  • Traditional button controls that work in any environment are matched with a highly responsive touchscreen interface for quick, convenient access to selections
  • Provides comprehensive connectivity with compatible Garmin chartplotters and remote control of key MFD features, including chart zoom, layout shortcut, Fusion stereo, autopilot and other compatible marine devices
  • Access to key information such as tide data on watch face and new alarms to notify you of anchor drag or imminent tide changes on compatible marine devices
  • Support for optional BlueChart g3 coastal charts and LakeVü g3 inland maps
  • When paired with your compatible smartphone, smartwatch features include smart notifications, preloaded activity profiles, built-in sports apps and training features, Garmin Pay contactless payments (with a supported country and payment network) and more
  • Get 24/7 health and wellness monitoring with wrist-based heart rate, Pulse Ox, stress and enhanced sleep tracking (This device is intended to give an estimate of your activity and metrics. Pulse Ox not available in all countries; it is not a medical...
  • Check out preloaded maps for thousands of golf courses and ski resorts worldwide; download TopoActive maps for any region via Wi-Fi connectivity to keep your explorations on track
  • Water-rated to 10 ATM (100 meters) (Withstands pressures equivalent to a depth of 100 meters)
No. 6
Garmin GPSMAP 78S Marine GPS Navigator and World Wide Chartplotter (010-00864-01)
  • 2.6-inch TFT LCD display. Display size-1.43 x 2.15 inches. 2.6 inch diagonal
  • Worldwide shaded relief basemap; microSD card slot for optional mapping
  • 3-Axis compass & barometric altimeter
  • Floats, buoyant
  • Built-in 3-axis electronic compass; Barometric altimeter
  • 1.7MB built-in memory
No. 7
B&G Zeus SR 10" SolarMAX HD Display GPS Chartplotter with C-MAP Discover X North America Chart Card...
  • INSTANT RESPONSE: Zeus SR enters a new phase of chartplotting power. Our most powerful 8-core processor delivers a smoother, faster user experience. Say goodbye to annoying lag, and switch instantly from one app to the next
  • SUPREME SIMPLICITY: A redesigned interface makes Zeus SR quicker and easier to use. The smartphone-like display is immediately familiar, helping sailors navigate with ease between their favourite apps pinning those they use most often for easy access
  • EVOLVED CONTROL: Taking onboard feedback from the world's best sailors, we know the details that matter when you're out on the water. That's why Zeus SR features a trio of hybrid control options. The glass-to-edge touchscreen is backed up by a rotary dial...
  • SOLARMAX IPS HD DISPLAY: Touchscreen is viewable from all angles and in all conditions, even with polarised sunglasses
  • FULL INTEGRATION: Compatibility with HALO Radars, Triton 2 Sailing Auto Pilots, Triton 2 and Nemesis Instruments, sensors, sonar, and more
No. 8
C-MAP Reveal Coastal - Hawaii, Marshall Islands, French Polynesia, Map Card for Marine GPS Navigation
  • SHADED RELIEF: Bring the world around you to life, with 3D rendered land and underwater elevation – including areas of Ultra-High-Res Bathymetric imagery – a game-changer for anglers and divers.
  • FULL-FEATURED VECTOR CHARTS: Making navigation easy by giving you accurate, up-to-date vector chart detail derived from official Hydrographic Office information.
  • HIGH-RES BATHY: Helps you identify shallow areas, drop-offs, ledges, holes or humps. Now includes compiled and quality-controlled Genesis detail as part of singular HRB layer.
  • CUSTOM DEPTH SHADING: Set a clear safety depth, maintain a paper-like view or create your own custom shading.
  • DYNAMIC RASTER CHARTS: Providing the traditional chart look and feel, coupled with easy access to all objects on the chart.
SaleNo. 9
Simrad GO9 XSE - 9-inch Chartplotter with HDI Transducer, C-MAP Discover Chart Card,Black...
  • MULTIFUNCTION DISPLAY: With GO9, add GPS navigation, sonar support, radar capability, and much more to your boat: perfect for sportboats, center-consoles, and smaller cruisers
  • C-MAP DISCOVER: Included C-MAP DISCOVER card with full-featured Vector Charts, Custom Depth Shading, Tides & Currents, C-MAP high-resolution Bathymetric contours, and ultra-wide coverage in the US and Canada
  • HDI TRANSDUCER: HDI Med/High/455/800kHz transducer supports Medium and High CHIRP, plus DownScan Imaging. Offers clear detection of fish and creates a picture-like view of fish-holding structures beneath your boat
  • RADAR READY: GO9 offers safer cruising and more productive fishing with plug-and-play connectivity to Simrad radar solutions for powerboats of all sizes
  • BUILT-IN CONNECTIVITY: Mirror your display to a smartphone or tablet and get access to charts, radar and other functionality from anywhere on board. NMEA 2000 connectivity offers more integration options
  • Included components: GO9 XSE MFD, Mounting Bracket, Dash Mount Kit, Edge Bezel, Power Cable, Sun Cover, HDI Transducer
  • Display type: LED
No. 10
Humminbird 788ci 5-Inch Waterproof Marine GPS and Chartplotter with Sounder (Navionics Gold and HotMaps...
  • 640 vertical pixels
  • 256 color TFT screen
  • DualBeam PLUS sonar
  • 1,500 ft depth capability
  • Tilt and Swivel Quick Disconnect Mount

Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Marine GPS Units & Chartplotters

Screen Size and Visibility

Consider the size of the display based on your vessel and how you'll use it. Larger screens are easier to read from a distance and provide more detailed chart views, but they also take up more space. Ensure the display is sunlight-readable and has good anti-glare properties for use in bright conditions.

Features and Functionality

Determine the essential features for your needs. Basic GPS units offer navigation and tracking, while chartplotters integrate chart display, sonar, radar, and autopilot controls. Think about whether you need advanced features like weather overlays, fishfinding capabilities, or NMEA 2000 connectivity for integrating with other marine electronics.

Ease of Use and Interface

A user-friendly interface is crucial, especially when operating under pressure. Look for intuitive menus, responsive touchscreens, or well-placed physical buttons. Test the interface if possible or read reviews that specifically mention usability. A steep learning curve can detract from your time on the water.

Frequently Asked Questions

What is the difference between a GPS and a chartplotter?
A GPS unit primarily provides location data, speed, and bearing. A chartplotter builds on this by displaying this information on a digital map or chart, offering a more comprehensive navigational view.
Do I need an internet connection for a marine GPS to work?
No, most marine GPS units and chartplotters do not require an internet connection to function. They rely on signals from GPS satellites to determine your position.
How important is screen resolution for a chartplotter?
Screen resolution is important for clarity, especially when viewing detailed charts and identifying potential hazards. Higher resolution allows for sharper images and more distinct rendering of navigational data.
Can I update the charts on my marine GPS?
Yes, most modern units allow for chart updates, either through SD cards, direct downloads, or Wi-Fi connections. Keeping your charts updated ensures you have the latest navigational information and aids.