GPSMAP® 8422 MFD | Marine Chartplotter Review

Brand: Garmin | Model: 010-01511-00 | Our Score: 5/5

The GPSMAP® 8422 MFD is a top-tier marine chartplotter for anglers and sailors, offering advanced navigation and sonar capabilities.

The Helm Premium 22-inch full HD marine display with pinch-to-zoom touchscreen control offers high resolution, 1-touch settings for docking, cruising, fishing, and anchoring. It features a high-performance processor for faster map drawing and video processing. It also has a sunlight-readable IPS touchscreen, Garmin Navionics+™ for coastal and inland mapping, and Wi-Fi® and ANT® technology networking options.

It supports traditional CHIRP and scanning sonars (ClearVü and SideVü) for detailed underwater imaging. Installation is simplified with mounting options and the optional GRID™ 20 remote control.

The review discusses the specifications, key features, and FAQs of the GPSMAP 8422 Multifunction Display (MFD) Unit.

Gpsmap 8422 Multifunction Display Unit, Item model number _010-01511-00
GPSMAP® 8422 MFD With Worldwide Basemap Part Number 010-01511-00

GPSMAP® 8422 MFD Specifications

SpecificationsGarmin GPSMAP 8422 MFD
Dimension20.8″ x 13.8″ x 2.8″ (52.8 cm x 35.1 cm x 7.1 cm)
Weight15.63 lbs (7.09 kg)
Display TypeFHD, IPS
Display Size18.8″ x 10.6″; 21.5″ diagonal, 47.8 cm x 27.0 cm; 54.6 cm diagonal
Display Resolution1920 x 1080 pixels
Mounting OptionsFlush or flat
Accepts Data Cards2 SD Cards (with Garmin SD card reader accesory)
Track Points50,000
Tracks50 saved tracks
Navigation Routes100
NMEA 2000 CompatibleYes
NMEA 0183 CompatibleYes
Tide TablesYes
Bluechart G3Yes
Bluechart G3 VisionYes
LAKEVÜ G3 UltraYes
Topo 100KYes
Standard MappingYes
Garmin Quickdraw ContoursYes
Raster Chart SupportYes
Smart Mode CompatibleYes
Supports Fusion-Link Compatible RadiosYes
GSD Black Box Sonar SupportYes
GCV Black Box Sonar SupportYes
Activecaptain® CompatibleYes
Grid (Garmin Remote Input Device) CompatibleYes
Wireless Remote CompatibleYes
Sailing FeaturesYes
Spoken Audio AlertsYes
Onehelm SupportYes
Power Input10-35 Vdc
Typical Current Draw At 12 VDC3.9 A
Maximum Current Draw At 12 VDC4.9 A
Maximum Power Usage At 10 VDC59W
Displays SonarYes
Traditional Sonar (Dual Frequency/Beam)Yes (with external black box, sold separately)
Clearvüyes (with GCV black box, sold separately)
Sidevüyes (with GCV black box, sold separately)
Panoptix SonarYes
NMEA 2000® Ports1
Connections NMEA0183 Input Ports4
NMEA 0183 Input (TX) Ports2
Video Input Ports1 (BNC composite); 1 HDMI (HDCP compliant)
Video Output Ports1 HDMI
J1939 Ports1
Garmin Marine Network Ports4
Usb PortsYes
Bluetooth® PairingYes
ANT+ (Connectivity)Yes
Garmin Wi-Fi Network (Local Connection)Yes

GPSMAP® 8422 MFD Key Features

General Design and Display

This fish finder/chartplotter is designed with practicality and efficiency in mind. It has a compact size of 20.8″ x 13.8″ x 2.8″, and it weighs 15.63 lbs, making it a solid yet manageable addition to any vessel. It is also waterproof with an IPX7 rating, ensuring it can handle wet marine conditions. The device features a convenient touchscreen, making it easy to navigate. The screen is large and clear, with a size of 18.8″ x 10.6″ and a Full HD resolution of 1920 x 1080 pixels, providing excellent visibility. You can mount it either flush or flat, depending on your boat’s setup.

Maps and Memory

When it comes to storing maps and navigation data, this device is quite capable.

It has slots for two SD cards, allowing for plenty of extra storage.

It can save up to 5000 waypoints, 50,000 track points, and 50 tracks.

Additionally, it can manage up to 100 navigation routes, making it great for planning trips in various water bodies.

Sensor Compatibility

This unit works well with other marine equipment, as it’s compatible with both NMEA 2000 and NMEA 0183 systems.

This means it can easily share data with other devices on your boat, helping you navigate and find fish more effectively.

Mapping Options

The device is equipped with built-in tide tables, which are essential for coastal navigation. It also supports various Garmin maps, including Bluechart G3 and LAKEVÜ G3, which are helpful for detailed and accurate marine charting. Additionally, it can use Garmin Quickdraw Contours for personalized mapping.

Chartplotter Features

In terms of chartplotting, the device has several advanced features. It’s compatible with Smart Mode, which makes it easier to use. It supports marine networks like AIS and DSC, and can connect with Fusion-Link™ compatible radios. For sonar, it works with both GSD and GCV Black Box Sonar. The unit is also compatible with Activecaptain® and supports wireless remote control. It even offers sailing features and spoken audio alerts, adding to its versatility.

Power Usage

The fish finder/chartplotter is energy-efficient, operating within a 10-35 Vdc range.

It typically draws 3.9 A at 12 VDC and can go up to 4.9 A.

Its maximum power usage is 59W at 10 VDC, making it a good choice for long outings.

Sonar Technology

The device is equipped to display various types of sonar readings. It supports Traditional, Clearvü, and Sidevü sonar, as well as Panoptix™ and Livescope, though some of these require additional equipment.

This makes it a versatile tool for different fishing conditions.


This unit offers a range of connectivity options. It has one NMEA 2000® port, multiple NMEA0183 and J1939 ports, and four Garmin Marine Network ports. For video, it has BNC composite and HDMI ports. It also includes USB ports, supports Bluetooth® pairing, ANT+ connectivity, and can connect to a local Garmin Wi-Fi network.

What’s In The Box?


  • Robust Waterproof Design: IPX7 rating ensures durability in marine environments.
  • High-Resolution Touchscreen: Full HD, IPS display provides clear and detailed visuals.
  • Extensive Memory Capacity: Accommodates up to 5000 waypoints and 50,000 track points.
  • Versatile Mapping Support: Compatible with a range of Garmin charts and features integrated tide tables.
  • Advanced Chartplotter Features: Supports Smart Mode, AIS, DSC, and various sonar types for enhanced navigation.
  • Efficient Power Management: Operates within a 10-35 Vdc range, ensuring power efficiency.
  • Comprehensive Connectivity Options: Includes multiple ports and supports Bluetooth®, ANT+, and Wi-Fi connections.


  • High Cost: Expensive due to advanced features.
  • Complex Interface: Can be challenging for beginners.
  • Limited Non-Garmin Compatibility: Best suited for use with Garmin-specific accessories.

FAQs for GPSMAP® 8422 MFD | Marine Chartplotter Review

The GPSMAP® 8422 MFD features a premium 22-inch full HD display with pinch-to-zoom touchscreen control, offering the highest resolution available in the marine market. Its sunlight-readable, anti-glare display ensures clear visibility in various lighting conditions.
This device allows 1-touch setting access for different modes like docking, cruising, fishing, and anchoring, simplifying the navigation process. Its high-performance processor delivers fast map drawing and enhanced video processing, providing a superior user experience across the network.
Yes, the GPSMAP® 8422 integrates with various sonar technologies, autopilot, apps, engine data, and multimedia. It supports a full digital switching system with CZone technology, enabling control of the boat’s functions like lighting and pumps from the helm or remotely via a tablet app.
The GPSMAP® 8422 includes SmartMode™ control, allowing customizable layouts for sonar, radar, cameras, media, and digital switching. Users can change all screens at a helm in sync to a preset mode, such as fishing or docking, with one-touch access.
The device is fully network-compatible, supporting radar, autopilot, instruments, multiple screens, sensors, and more. It allows sharing of features with compatible GPSMAP units, including radar, maps, user data, and images from Garmin cameras.
Yes, the GPSMAP® 8422 MFD can display various sonar sources like GSD™ 26 CHIRP professional sonar and Garmin Panoptix™ sonar simultaneously on one or multiple screens in a multi-display setup.
It offers extensive connectivity options, including built-in Wi-Fi®, ANT® technology, Ethernet ports, NMEA 2000, HDMI, and USB ports. This enables easy connection with peripheral devices and enhances the user experience with Garmin Helm and BlueChart® Mobile apps.
The device includes SailAssist features with laylines, enhanced wind rose, heading and course-over-ground lines, and tide/current/time sliders. It also provides racing features with pre-race guidance and a synchronized race timer for competitive sailing.
Yes, the GPSMAP® 8422 MFD can be updated via a microSD card or wirelessly using the ActiveCaptain app. The update process is straightforward, with detailed instructions provided, and it ensures that all networked devices and sensors are up-to-date.


The GPSMAP® 8422 MFD is a high-end marine chartplotter that offers advanced technology, user-centric design, and versatile functionality. It features a 22-inch full HD touchscreen with the highest resolution in the marine market, making it ideal for various lighting conditions.

The device is highly regarded for its ease of navigation and control, with one-touch setting access for different modes and a high-performance processor for fast map drawing. It excels in integration, connecting with various sonar technologies, autopilot, apps, engine data, and multimedia. The chartplotter’s network compatibility is extensive, supporting radar, multiple screens, sensors, and more.

It offers robust connectivity options, including Wi-Fi®, Ethernet, and HDMI. SailAssist features add value for sailing activities, and the device is easy to update.

Overall, the GPSMAP® 8422 MFD is a top-tier choice for marine navigation, suitable for both recreational and professional applications.