Garmin GPSMAP 1243 12" Chartplotter GN+
Garmin GPSMAP 1243 12" Chartplotter GN+ — Product description
The Garmin GPSMAP 1243 12-inch Chartplotter GN+ (MPN 010-02367-60, UPC 753759285241) is the 12-inch high-resolution IPS touchscreen marine chartplotter with Garmin Navionics+ US and Canada chart preloaded - the premium 12-inch class chartplotter in Garmin's current GPSMAP lineup for serious helm installations on mid-to-large fishing and cruising boats. The 1243 is the chartplotter-only configuration (no built-in fishfinder sonar) - the right pick for boats where the chartplotter handles chart / navigation / radar functions and a separate sonar module or networked sonar handles fishfinder duties. For boats wanting a single all-in-one chartplotter / fishfinder, the 1243xsv variant adds built-in sonar capability. 12-inch high-resolution IPS touchscreen delivers significantly better sunlight readability and substantially wider viewing angles than the previous-generation 12-inch GPSMAP units. IPS (in-plane switching) panel technology stays fully readable at 70+ degree off-axis viewing angles vs the 45-degree limit of legacy TN panels - matters for passengers behind the helm, anglers working the bow, and crew sharing the chartplotter view. Slimline edge-to-edge glass design with reduced unit footprint - easier retrofit into existing dashboard configurations than previous-generation units with their thicker bezels. Fast and responsive processing references 10 Hz GNSS (GPS, GLONASS, and Galileo - three satellite constellations simultaneously for the most accurate positioning available). Preloaded Garmin Navionics+ coastal charts and inland mapping covering US waters with Auto Guidance+ technology that calculates suggested routes between your starting position and destination based on your boat's draft, beam, height, and other parameters. Support for optional Garmin Navionics Vision+ premium map content for additional chart features. Full marine network integration via HTML 5.0, NMEA 2000, NMEA 0183, J1939 for engines, and Garmin Marine Network Ethernet. Add compatible sonar modules, FrontVu forward-looking sonar (sold separately), autopilots, radar, IP cameras, multimedia / audio systems, and other compatible Garmin devices. Pair with quatix smartwatches, wind transducers, and wireless remote controls. 12.7 lb shipping weight. The 1243 is the premier 12-inch chartplotter for boats wanting maximum screen real estate at the helm without the sonar functionality the xsv variants add.
The Garmin GPSMAP 1243 12-inch Chartplotter GN+ is the 12-inch high-resolution IPS touchscreen marine chartplotter with Garmin Navionics+ US and Canada chart preloaded. It's the premium 12-inch class chartplotter in Garmin's current GPSMAP lineup for serious helm installations on mid-to-large fishing and cruising boats.
1243 vs 1243xsv - what's the difference. The GPSMAP 1243 line is offered in two main variants: (1) GPSMAP 1243 (this model) - chartplotter only. No built-in fishfinder sonar. The right pick for boats where the chartplotter handles chart / navigation / radar functions and a separate sonar module (Garmin GSD 25 or similar standalone sonar) or networked sonar from another GPSMAP unit handles fishfinder duties. Common for cruising boats, sailboats, and fishing boats with dedicated separate sonar setups. (2) GPSMAP 1243xsv - chartplotter plus built-in fishfinder sonar (Ultra HD SideVu, ClearVu, 1 kW CHIRP traditional sonar). The all-in-one configuration for boats wanting chartplotter and fishfinder in a single integrated unit. Most fishing boats want the xsv. Cruising boats and boats with dedicated separate fishfinder typically prefer the 1243 chartplotter-only to avoid paying for built-in sonar capability they won't use.
The 12-inch IPS touchscreen. 12-inch screen size is the workhorse premium-large helm display - substantially more screen area than the 7, 9, and 10-inch GPSMAP variants, enabling comfortable multi-pane display layouts (chart + radar + engine instruments + AIS) simultaneously without overwhelming individual view legibility. IPS (in-plane switching) panel technology delivers significantly better sunlight readability and substantially wider viewing angles than the previous-generation 12-inch GPSMAP units. Practical viewing-angle impact: IPS stays fully readable at 70+ degree off-axis viewing angles vs the 45-degree limit of legacy TN panels. Matters for passengers behind the helm, anglers working the bow, crew sharing the chartplotter view, or operators looking at the display from a non-direct angle. Touchscreen interface for direct interaction with chart, menus, and configurable widgets.
Slimline design for easy retrofit. Edge-to-edge glass face with reduced unit footprint vs previous-generation 12-inch GPSMAP units. Practical install benefit: easier retrofit into existing dashboard configurations where the older bulkier units had to be cut around. For boats upgrading from a previous-generation GPSMAP 1242 (or similar predecessor), the 1243 typically fits the existing dash cutout without modification. For new installs, the slimmer footprint fits more dashboard layouts without major modifications.
10 Hz GNSS with three satellite constellations. The 1243 uses 10 Hz GNSS receiver that references three satellite constellations simultaneously: GPS (US), GLONASS (Russian), and Galileo (European). Three-constellation reception delivers: (1) Maximum positioning accuracy - more satellites visible at any time = more accurate position fixes. Typical accuracy under 1 meter under normal conditions. (2) Better coverage in challenging environments - urban canyons, mountain valleys, dense forest canopy near shore, where single-constellation receivers can lose lock. Three constellations dramatically increase the chance of having enough satellites visible for accurate positioning. (3) 10 Hz update rate - position updates 10 times per second, vs the 1 Hz update of standard receivers. Smoother chart tracking at speed, more accurate speed-over-ground readings, better course-over-ground display. For boats operating at speed, the 10 Hz update is meaningfully smoother than 1 Hz.
Navionics+ US and Canada preloaded. The 1243 ships with the Garmin Navionics+ chart pack covering US and Canadian coastal waters, Great Lakes, and major inland lakes / rivers. Navionics is the premium chart product in the US market - more detailed depth contours, structure data, navigation markers, and dock-level resolution than basic chart products. Includes Auto Guidance+ technology: enter your destination, the chartplotter calculates a suggested route between your starting position and destination based on your boat's draft, beam, height, and other parameters. Auto Guidance+ is for planning purposes only and does not replace safe navigation operations - always verify suggested routes against your visual / radar observation of actual conditions. The chart pack includes one year of free chart updates from activation date.
Optional Navionics Vision+ premium content. For owners wanting additional chart features beyond the base Navionics+ included with the unit, Garmin Navionics Vision+ premium map content is available as an upgrade. Vision+ adds: high-resolution satellite imagery overlay on the chart, 3D bottom imaging in supported areas, enhanced port / marina detail, and additional point-of-interest data. Vision+ is sold separately as an annual subscription or one-time chart card purchase.
Comprehensive networking. The 1243 supports the full marine electronics networking ecosystem: (1) HTML 5.0 for compatible web-based interfaces. (2) NMEA 2000 - the current marine instrument standard, connects engine data, fuel sensors, weather instruments, AIS, autopilots, and modern instrumentation. (3) NMEA 0183 - the older serial interface, still supported for legacy equipment integration. (4) J1939 for engines - direct connection to compatible diesel and gas engine ECUs for engine data display. (5) Garmin Marine Network Ethernet - share charts, waypoints, sonar data, and IP camera video between multiple GPSMAP units in multi-display configurations. For complex marine electronics setups, the 1243's networking flexibility integrates with virtually any current marine electronics equipment.
Compatible accessories. The 1243 networks with the broader Garmin marine ecosystem: (1) Sonar modules - separate Garmin GSD 25 or compatible sonar modules connect via Ethernet for fishfinder capability (since the 1243 doesn't have built-in sonar). (2) FrontVu forward-looking sonar - shows underwater obstructions ahead of the boat for avoiding collision with submerged objects. Sold separately. Note: FrontVu effectiveness decreases as speed rises above 8 knots. (3) Garmin Marine Radar - dome or open-array radars overlay on the chart display. (4) Autopilots - hands-off course holding integration. (5) IP cameras - display network camera video on the chartplotter. (6) FUSION-Link audio systems for boat audio control. (7) quatix smartwatches - wearable integration for boat data on your wrist. (8) Wind transducers, wireless remote controls, and other Garmin marine devices.
Install. Plan for 4-6 hours for an experienced installer. Tasks: install the GPSMAP 1243 at the helm (the slimline design eases dash retrofit), wire 12V power and ground through an appropriately-sized fuse (5A is the standard recommendation), connect the Garmin Marine Network Ethernet for multi-display configurations, connect NMEA 2000 backbone for instrument data, configure J1939 engine connection if applicable, power on and run through initial setup, activate the Navionics+ chart pack via Wi-Fi during initial setup. Most installers handle this in an afternoon. For network installations (multiple GPSMAP displays, sonar modules, radar, etc.), plan additional time for full system integration and configuration.
Warranty. Garmin standard 2-year limited warranty (with extended warranty available as a purchase option). Save the receipt and the original packaging. Warranty service runs through Garmin's authorized service network worldwide. Most field failures Garmin sees are install-related (improper sealing of dash mounts allowing water intrusion, undersized power wiring causing brown-out shutdowns) rather than head unit defects - careful install delivers many years of reliable service.
Key Features
- Garmin GPSMAP 1243 12-inch Chartplotter GN+
- Chartplotter-only configuration (NO built-in fishfinder sonar)
- For 1243xsv with built-in sonar, see the xsv variant
- 12-inch high-resolution IPS touchscreen display
- Improved sunlight readability vs previous-generation 12-inch GPSMAP units
- Wide-angle viewing - readable at 70+ degree off-axis vs 45-degree TN panel limit
- Slimline edge-to-edge glass design with reduced unit footprint
- Easier dash retrofit than previous-generation bulkier units
- 10 Hz GNSS receiver (GPS, GLONASS, Galileo - three constellations simultaneously)
- Sub-meter typical positioning accuracy
- Better coverage in challenging GPS environments
- 10 Hz position update rate for smooth chart tracking at speed
- Garmin Navionics+ US and Canada chart pack preloaded
- Auto Guidance+ technology for route suggestion based on boat parameters
- Auto Guidance+ for planning only - does not replace safe navigation
- 1 year of free chart updates from activation
- Optional Garmin Navionics Vision+ premium content upgrade available
- HTML 5.0 for compatible web-based interfaces
- NMEA 2000 for instrument and engine data integration
- NMEA 0183 for legacy equipment integration
- J1939 for direct engine ECU connection
- Garmin Marine Network Ethernet for multi-display configurations
- Compatible with Garmin Marine Radar (dome or open-array)
- Compatible with FrontVu forward-looking sonar (sold separately)
- Compatible with Garmin autopilots
- Compatible with IP cameras, FUSION-Link audio, multimedia
- Pair with quatix smartwatches, wind transducers, wireless remotes
- Wi-Fi for software updates and Garmin app integration
- For mid-to-large fishing and cruising boats
- NOT for very small boats with limited dash space (look at 7-9 inch GPSMAP variants)
- 12V DC operation, 5A fuse recommended
- 12.7 lb shipping weight
- Garmin 2-year limited warranty (extended available)
- Manufacturer Part Number 010-02367-60 / UPC 753759285241
Why Buy from NVN Marine
- Authorized Garmin reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | Garmin GPSMAP 1243 GN+ - 12 Inch High-Resolution IPS Touchscreen Marine Chartplotter with Navionics+ US and Canada Chart Preloaded |
|---|---|
| Brand | Garmin |
| Manufacturer Part Number | 010-02367-60 |
| UPC | 753759285241 |
| Series | GPSMAP 1243 |
| Configuration | Chartplotter only (NO built-in sonar - see 1243xsv for sonar variant) |
| Display Size | 12 inches |
| Display Type | High-resolution IPS (in-plane switching) touchscreen |
| Display Improvements | Better sunlight readability and wider viewing angles vs previous gen |
| Design | Slimline edge-to-edge glass with reduced unit footprint |
| GNSS Receiver | 10 Hz GPS, GLONASS, and Galileo (three constellations) |
| Position Accuracy | Sub-meter typical |
| Position Update Rate | 10 Hz (10x faster than 1 Hz standard receivers) |
| Preloaded Chart | Garmin Navionics+ US and Canada |
| Auto Guidance | Auto Guidance+ (planning only, does not replace safe navigation) |
| Chart Updates | 1 year free from activation |
| Premium Chart Upgrade | Garmin Navionics Vision+ (sold separately) |
| Networking | NMEA 2000, NMEA 0183, J1939, Garmin Marine Network Ethernet, HTML 5.0 |
| Wi-Fi | Yes (chart updates and app integration) |
| Sonar Integration | Via separate Garmin GSD 25 or compatible sonar module (sold separately) |
| FrontVu Compatible | Yes (forward-looking sonar, sold separately - effective up to 8 knots) |
| Radar Compatible | Garmin Marine Radar dome or open-array (sold separately) |
| Autopilot Compatible | Yes |
| Engine Data | J1939 direct connection plus NMEA 2000 |
| Recommended Boat Size | 25-40+ ft fishing and cruising boats |
| Touchscreen | Yes |
| Power | 12V DC |
| Recommended Fuse | 5 amp |
| Shipping Weight | 12.7 lb |
| Warranty | Garmin 2-year limited (extended available) |
Frequently asked questions
What's the difference between 1243 and 1243xsv?
The 1243 (this model) is chartplotter-only - no built-in fishfinder sonar. The right pick for boats where the chartplotter handles chart / navigation / radar functions and a separate sonar module or networked sonar from another GPSMAP unit handles fishfinder duties. Common for cruising boats, sailboats, and fishing boats with dedicated separate sonar setups. The 1243xsv adds built-in fishfinder sonar (Ultra HD SideVu, ClearVu, 1 kW CHIRP traditional sonar) - the all-in-one configuration for boats wanting chartplotter and fishfinder in a single integrated unit. Most fishing boats want the xsv. Cruising boats and boats with dedicated separate fishfinder typically prefer the 1243 chartplotter-only.
What boat size does the 12-inch fit?
12-inch screen size is the workhorse premium-large helm display - the right size for mid-to-large fishing and cruising boats (typically 25-40+ ft) where helm space accommodates the large display without overwhelming the dash. For smaller boats with limited dash real estate (under 20 ft), the GPSMAP 743 (7-inch) or 943 (9-inch) variants may fit better. For tournament-class big-screen helms or very large boats, the GPSMAP 1643 (16-inch) or 2243 (22-inch) deliver even more screen area. The 12-inch is the premium-but-not-extreme size that fits most boat helm installations.
What does IPS display mean?
IPS (in-plane switching) is the modern display panel technology used in the 1243 - significantly better than the legacy TN (twisted nematic) panels used in older marine displays. Two practical benefits: (1) Wider viewing angles - IPS stays fully readable at 70+ degree off-axis viewing angles vs TN panels that go dark / washed out beyond 45 degrees. Matters for passengers behind the helm and crew sharing the chartplotter view. (2) Better sunlight readability - IPS panels deliver better contrast and brightness under direct sunlight than TN panels. Trade-off: IPS panels cost more than TN, reflected in the unit price.
What's GNSS with three constellations?
The 1243 uses a 10 Hz GNSS receiver that references three satellite constellations simultaneously: GPS (US), GLONASS (Russian), and Galileo (European). Three-constellation reception delivers: maximum positioning accuracy (more satellites visible = more accurate position fixes, typical sub-meter accuracy), better coverage in challenging environments (urban canyons, mountain valleys where single-constellation receivers can lose lock), and 10 Hz update rate (position updates 10x per second vs the 1 Hz of standard receivers - smoother chart tracking at speed). For boats operating at speed, the 10 Hz update is meaningfully smoother than 1 Hz.
What's Auto Guidance+?
Auto Guidance+ is the route-suggestion technology built into the included Navionics+ chart pack. Enter your destination, the chartplotter calculates a suggested route between your starting position and destination based on your boat's draft (how deep your hull extends below the waterline - the route avoids water shallower than your draft), beam (boat width - the route avoids passages too narrow), height (mast / bridge clearance - the route avoids overhead obstructions too low), and other parameters. CRITICAL CAVEAT: Auto Guidance+ is for planning purposes only and does not replace safe navigation operations. Always verify suggested routes against your visual / radar observation of actual conditions. Treat Auto Guidance+ as a starting point for route planning, not a finished navigation solution.
What charts come with it?
Garmin Navionics+ US and Canada chart pack preloaded. Coverage: US coastal waters, Great Lakes, major US inland lakes / rivers, and Canadian coastal and inland waters. Navionics is the premium chart product in the US market - more detailed depth contours, structure data, navigation markers, and dock-level resolution than basic chart products. The chart pack includes one year of free chart updates from activation date - download updates via the boat's Wi-Fi. After the first year, chart updates require an annual Navionics subscription. For additional chart features beyond the base Navionics+, the optional Garmin Navionics Vision+ premium content upgrade adds satellite imagery overlay, 3D bottom imaging, enhanced port detail, and more.
Does it integrate with my existing electronics?
Yes - the 1243 supports the full marine electronics networking ecosystem: NMEA 2000 (current marine standard - engines, instruments, AIS, autopilots), NMEA 0183 (legacy serial - older equipment), J1939 (direct engine ECU connection for engine data), Garmin Marine Network Ethernet (multi-display configurations, sonar modules, IP cameras). For most current marine electronics, the 1243 networks via NMEA 2000 without issues. For legacy equipment, NMEA 0183 provides backward compatibility. For multi-GPSMAP setups with shared charts / sonar / radar, Garmin Marine Network Ethernet is the right networking layer.
What's the install like?
Plan for 4-6 hours for an experienced installer. Tasks: install the GPSMAP 1243 at the helm (the slimline design eases dash retrofit), wire 12V power and ground through a 5A fuse, connect the Garmin Marine Network Ethernet for multi-display configurations, connect NMEA 2000 backbone for instrument data, configure J1939 engine connection if applicable, power on and run through initial setup, activate the Navionics+ chart pack via Wi-Fi during initial setup. Most installers handle this in an afternoon. For network installations with multiple displays, sonar modules, radar, etc., plan additional time for full system integration.
Can I add a fishfinder later?
Yes - the 1243 doesn't have built-in sonar but it networks with separate sonar modules to add fishfinder capability later. Standard pairing: add a Garmin GSD 25 or compatible standalone sonar module that connects to the 1243 via Garmin Marine Network Ethernet. The sonar module handles all the sonar processing and feeds the imagery to the 1243 for display. This approach lets you add fishfinder capability without buying the 1243xsv with built-in sonar, useful for boats that want to add fishfinder gradually or that need higher-end sonar performance than the built-in sonar in xsv variants provides.
Can I network multiple displays?
Yes - the 1243 supports Garmin Marine Network Ethernet for multi-display configurations. Common setups: main helm 1243 plus secondary displays at flybridge / cockpit / bow positions sharing charts, waypoints, sonar data, and IP camera video. Also networks with compatible autopilots, VHF radios with DSC integration, AIS transponders, FUSION-Link audio, and digital switching. For multi-display boats and tournament fishing operations, the network configuration is the standard setup. For solo-display boats, the 1243 works equally well as the primary chartplotter without networking.
What's FrontVu forward-looking sonar?
FrontVu (sold separately) is forward-looking sonar that shows underwater obstructions ahead of the boat - helps avoid collision with submerged objects (rocks, logs, shoals, reefs) that aren't visible from the surface. Critical for boats running in shallow or unfamiliar water where chart accuracy may not show all obstructions. IMPORTANT CAVEAT: FrontVu effectiveness decreases as speed rises above 8 knots. Above 8 knots, the boat can travel faster than the sonar can scan ahead, so by the time an obstruction is detected, you may not have time to avoid it. Use FrontVu primarily at low speeds (under 8 knots) where it can effectively warn of obstructions in time to avoid them.
What's the warranty?
Garmin standard 2-year limited warranty applies (with extended warranty available as a purchase option). Save the receipt and the original packaging. Warranty service runs through Garmin's authorized service network worldwide. Most field failures Garmin sees are install-related (improper sealing of dash mounts allowing water intrusion, undersized power wiring causing brown-out shutdowns) rather than head unit defects - careful install delivers many years of reliable service.
