Garmin GPSMAP® 923, Non-Sonar With Worldwide Basemap

🐟 Premium 9" marine chartplotter from Garmin GPSMAP series, chartplotter only, no built-in sonar. Worldwide Basemap. Priced at $1399.

Garmin GPSMAP 923 9" Marine Chartplotter

The Garmin GPSMAP 923 is part of Garmin's premium GPSMAP marine chartplotter line, different from the ECHOMAP line in both positioning and capability. While ECHOMAP is primarily a fishfinder with chartplotter integration, GPSMAP is primarily a chartplotter with optional sonar. This one is a chartplotter-only unit, it does NOT have built-in sonar processing. Use as a primary navigation unit on a networked boat where another GPSMAP or ECHOMAP handles sonar, and ships with a basic worldwide basemap, no regional Navionics+ or BlueChart pre-loaded.

Understanding the name: The "7/9" is the screen size. The first digit after is the series (2 = Worldwide basemap, 4 = U.S. Coastal). The "3" is the generation. "Xsv" on the end means the unit supports CHIRP + ClearVü + SideVü sonar. So "723Xsv" = 7" GPSMAP with Worldwide basemap and sonar capability. "943" = 9" GPSMAP with U.S. Coastal maps and NO sonar. Garmin naming is cryptic but consistent.

GPSMAP vs ECHOMAP: GPSMAP is designed for serious marine applications, offshore boats, sportfishers, charter operations, commercial vessels. Full Garmin Marine Network support includes radar (GMR Fantom/xHD), cameras (GC series), Reactor autopilot integration, thru-hull transducer support, and premium multi-display networking. ECHOMAP is designed for bass boats and recreational anglers first. If your boat is a bass boat or pontoon, ECHOMAP UHD2 or Ultra 2 is probably the right family. If your boat is a center console, sportfisher, or charter rig, GPSMAP is probably the right family.

The "non-sonar" designation means this unit is a chartplotter ONLY, it does not have built-in CHIRP, ClearVü, or SideVü sonar processing. This is typical of multi-display setups where one unit handles sonar and another handles navigation/charts.

Key Features

• ✅ 9" Premium Marine Display, high-contrast sunlight-readable IPS touchscreen with premium construction
• ✅ Worldwide Basemap
• ❌ No Built-In Sonar, this is the chartplotter-only variant. For sonar, step up to the Xsv version or network with a separate sonar unit
• ✅ Full Garmin Marine Network (Ethernet), radar, cameras, autopilot, multi-display, premium marine integration
• ✅ NMEA 2000 + NMEA 0183, engines, fuel, tanks, sensors, marine instruments
• ✅ Wi-Fi + ActiveCaptain App, wireless updates, waypoint sharing, smart notifications
• ✅ Premium Cartography Support, BlueChart g3, Navionics+, Navionics Vision+, LakeMaster VX, CoastMaster, C-MAP Genesis Edge
• ✅ Dual microSD Card Slots, expand mapping for any region
• ✅ Panoptix Compatible, PS22, PS31, LVS32, LVS34 live sonar support (with GLS 10 for LiveScope)
• ✅ Reactor Autopilot Compatible, integrated autopilot control
• ✅ Thru-Hull Transducer Support, premium marine transducer options beyond transom-mount
• ✅ Marine-Specific Features, tide stations, currents, sunrise/sunset, fish forecasts

Who This Is For

This unit is best for offshore charter captains, commercial fishing operations, serious sportfishing boat owners, and multi-display rig builders, particularly captains, commercial boat operators, and multi-display rig builders who have dedicated sonar on a separate unit. Anglers who travel internationally, run multi-region boats, or prefer to spec their own premium cartography chip (navionics+, bluechart g3 vision, lakemaster vx). The 9" GPSMAP is the sweet spot between the 7" compact and the 10"+ large-console tiers. Enough real estate for meaningful split-screens on a sportfishing or charter boat helm.

Choose This If...

• You're running a center console, sportfisher, or charter boat, GPSMAP is designed for this buyer. Bass boat anglers are typically better served by ECHOMAP UHD2 or Ultra 2.
• You need full Garmin Marine Network integration, radar, cameras, autopilot, multi-display. ECHOMAP gets limited Marine Network; GPSMAP gets full.
• You want premium marine cartography support, BlueChart g3 Vision, Navionics Vision+, full chip flexibility across regions.
• You run a multi-display rig with dedicated sonar on another unit, the non-sonar chartplotter saves money when another unit handles sonar.
• International travel, multi-region use, or spec-your-own cartography, this variant's Worldwide Basemap is ideal for that use case. For pre-loaded U.S. coastal BlueChart g3 maps, pick the 943 variant.
• Your budget is around $1399, premium marine chartplotter tier, below the 10"+ GPSMAP 1000-series and 8000-series flagship territory.

Specifications

• Display: 9" sunlight-readable IPS touchscreen
• Head Unit Dimensions: 10.8" W x 7.1" H x 2.5" D
• Head Unit Weight: 4.5 lbs
• Power: 12V DC
• Connectors: NMEA 2000, NMEA 0183, Garmin Marine Network (Ethernet), Wi-Fi, dual microSD slots
• Sonar: NOT supported on this unit. No sonar port. Pair with a separate networked sonar unit.
• Cartography: Worldwide Basemap
• Waterproof rating: IPX7
• SKU: 010-02366-00

Compatibility Reference

The GPSMAP 923 integrates with the full Garmin premium marine ecosystem:

• Transducers: Not applicable, non-sonar unit (pair with networked sonar source)
• Live Sonar: LiveScope Plus / XR / Original (via networked GLS 10), Panoptix (via networked unit)
• Radar: GMR Fantom series (solid-state), GMR xHD series (magnetron), full integration
• Autopilot: Garmin Reactor series (40/Hydraulic/Mechanical), integrated control
• Cameras: GC series marine cameras, multi-camera networking
• Trolling Motors: Garmin Force, Force Pro, Force Kraken (for offshore/bay boat applications)
• Networking: NMEA 2000, NMEA 0183, Garmin Marine Network (Ethernet), Wi-Fi
• Cartography: BlueChart g3, BlueChart g3 Vision, Navionics+, Navionics Vision+, LakeMaster VX, CoastMaster Premium, C-MAP Genesis Edge
• Apps: ActiveCaptain, Garmin Quatix marine smartwatches

Warranty

Covered by Garmin's 1-year limited warranty. GPSMAP installations are almost always done by marine electronics professionals, Carolina Sportsman Outfitters can help coordinate with qualified installers in the Carolinas, or answer pre-purchase questions about networking, transducer selection, autopilot integration, or multi-display setups. Call 252-431-6001.

Frequently Asked Questions

What's the difference between GPSMAP and ECHOMAP?

GPSMAP is Garmin's premium marine chartplotter line, designed primarily for offshore, charter, commercial, and serious sportfishing use. ECHOMAP is Garmin's mainstream fishfinder line, designed for bass boats, recreational anglers, and budget-to-mid-tier pricing. GPSMAP has premium features ECHOMAP doesn't: full Garmin Marine Network (not limited), integrated radar/camera/autopilot support, premium cartography chip support, professional marine interfaces. ECHOMAP has sonar-first integration that GPSMAP offers as an option (Xsv) or leaves out (non-sonar). Price is roughly 2x ECHOMAP at comparable screen sizes.

Do I need the Xsv variant or can I use the non-sonar version?

If this is your ONLY display on the boat, get the Xsv variant, it has sonar capability. If you're running a multi-display rig where another unit (ECHOMAP UHD2, another GPSMAP Xsv, etc.) handles sonar and this unit's job is primarily navigation/chartplotting, the non-sonar version saves $100. Common multi-display setups put a 12" sonar-primary unit on the helm and a 7"/9" non-sonar GPSMAP as the chartplotter/navigator.

What's the difference between the 2 and 4 in the model number (e.g., 723 vs 743)?

The "2" means Worldwide basemap (no pre-loaded regional cartography). The "4" means U.S. Coastal BlueChart g3 pre-loaded. So 723 = 7" Worldwide, 743 = 7" U.S. Coastal. Same hardware, different pre-installed maps. If you fish the U.S. coast, the 4 variants save you the cost of adding a BlueChart chip.

Is LiveScope supported?

Yes. GPSMAP 7"/9" units support LiveScope Plus, LiveScope XR, and LiveScope Original via the GLS 10 black box. Panoptix PS22/PS31 live sonar is also supported.

Can I use this with a Force trolling motor?

Yes. GPSMAP units integrate with Garmin Force, Force Pro, and Force Kraken trolling motors. This is more common on bay boats and inshore offshore-rigged boats than on bass boats (where ECHOMAP is the typical Garmin chartplotter choice).

Do I need professional installation?

Strongly recommended for GPSMAP units. These are typically installed in networked multi-display rigs with radar, cameras, autopilot, and thru-hull transducers, the networking, cable routing, and integration work benefits from an experienced marine electronics installer. Budget $500-$1,500 for professional installation depending on complexity.

How does this compare to the GPSMAP 1022 or GPSMAP 1222?

The 1022 (9") and 1222 (12") are the next steps up in the GPSMAP line, larger displays, same premium Marine Network support. For multi-display charter boats or offshore sportfishers, many operators run a 1242Xsv as the primary helm and 7"/9" GPSMAP units at secondary stations (flybridge, cabin), the 923 is a common secondary-display choice in that scenario.

Is this used in offshore tournaments?

Yes, commonly on center console and offshore tournament rigs. Offshore tournament circuits including IGFA events, major billfish tournaments, and kingfish circuits routinely use GPSMAP units at the helm. The premium Marine Network integration with radar and autopilot is typical for offshore tournament operations.

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Carolina Sportsman Outfitters has been outfitting anglers with Garmin marine electronics since 2015. For GPSMAP series installations, we often work with customers on multi-display rig specification, head units, transducers, radar, autopilot, networking. Call 252-431-6001 before you buy if you want to talk through whether GPSMAP or ECHOMAP is the right family for your boat and fishing.