The Garmin GPSMAP 1243 is a 12-inch chartplotter designed for serious coastal and inland navigation in the U.S. and Canada. With a bright edge-to-edge WXGA touchscreen and flexible connectivity, it delivers precise planning and confident command at the helm.
-
Display: 12.1" diagonal WXGA touchscreen (1280 x 800) with edge-to-edge glass for sharp, sunlight-readable viewing and slim borders that minimize mounting footprint.
-
Preloaded Maps: Garmin Navionics+ coastal and inland water charts for the U.S. and Canada.
-
Optional Maps: Supports Navionics Vision+ premium maps for enhanced detail.
-
Navigation & Positioning: 10 Hz high-sensitivity GNSS receiver (GPS, GLONASS, Galileo) for accurate positioning and smooth speed and COG data.
-
Connectivity & Networking: Built-in Wi‑Fi for ActiveCaptain with OneChart, smart notifications, and software updates; NMEA 2000 and NMEA 0183 networking; Garmin Marine Network ports (2).
-
System Integration: OneHelm support for connecting to compatible third-party devices; J1939 engine connectivity for easy integration with engines; ANT connectivity with quatix watches, gWind Wireless 2 transducer, GNX Wind marine instrument, and wireless remotes (sold separately).
-
Storage & Data: Two microSD card slots; 5,000 waypoints; 50,000 track points; 50 saved tracks; 100 routes.
-
Physical & Durability: Dimensions 12.1" x 8.9" x 3.2" (30.8 x 22.8 x 8.2 cm); weight 6.6 lbs; IPX7 water rating.
-
Chartplotter Features: Garmin Radar compatible; Garmin Sonar compatible with external black box (sold separately); SmartMode for customizable monitor presets; AIS (tracks target ships); DSC (displays position data from DSC-capable VHF radio); FrontVü forward-looking sonar compatibility (sold separately).
-
Additional Capabilities: Tide tables; Auto Guidance+ planning (for planning purposes only).
-
Maps & Memory: Preloaded maps.
With Navionics+ maps preloaded, you can quickly plan routes across U.S. and Canadian waters. Auto Guidance+ helps you plan your path while keeping safety in mind, and OneChart with ActiveCaptain keeps charts, updates, and notifications at your fingertips. The GPSMAP 1243 is engineered for flexible integration, enabling you to build a full marine system with radar, sonar, autopilots, cameras, and more, all while maintaining precise positioning and reliable data at the helm. Optional Vision+ maps, FrontVü sonar, and additional accessories expand your capabilities as your needs grow.
| General |
| PHYSICAL DIMENSIONS |
12.1" x 8.9" x 3.2" (30.8 x 22.8 x 8.2 cm) |
| DISPLAY SIZE |
10.3" x 6.4"; 12.1" diagonal |
| DISPLAY RESOLUTION |
1280 x 800 pixels |
| DISPLAY TYPE |
WXGA display |
| WEIGHT |
6.6 lbs. (3.0 kg) |
| WATER RATING |
IPX7 |
| POLARIZED SUPPORT |
Yes |
| POWER CONSUMPTION |
Max power usage at 10 Vdc: 26.5 W
Typical current draw at 12 Vdc: 1.7 A
Max current draw at 12 Vdc: 2.2 A |
| ANTENNA |
Internal or external over NMEA 2000 |
| MOUNTING OPTIONS |
Bail, flush or flat |
| RECEIVER |
10 Hz high-sensitivity |
| GARMIN MARINE NETWORK™ PORTS |
2 |
| Maps & Memory |
| PRELOADED MAPS |
Garmin Navionics+ coastal and inland water charts for the U.S. and Canada |
| ACCEPTS DATA CARDS |
2 microSD™ cards (back of unit) |
| WAYPOINTS |
5,000 |
| TRACK LOG |
50,000 points; 50 saved tracks |
| ROUTES |
100 |
| Outdoor Recreation |
| TIDE TABLES |
Yes |
| Chartplotter Features |
| GARMIN RADAR COMPATIBLE |
Yes |
| GARMIN SONAR COMPATIBLE |
Yes (with external black box, sold separately) |
| GARMIN SMARTMODE COMPATIBLE (CUSTOMIZABLE MONITOR PRESETS) |
Yes |
| SUPPORTS AIS (TRACKS TARGET SHIPS POSITION) |
Yes |
| SUPPORTS DSC (DISPLAYS POSITION DATA FROM DSC-CAPABLE VHF RADIO) |
Yes |
| SUPPORTS FUSION-LINK™ COMPATIBLE RADIOS |
Yes |
| GSD™ BLACK BOX SONAR SUPPORT |
Yes |
| GCV™ BLACK BOX SONAR SUPPORT |
Yes |
| ACTIVECAPTAIN COMPATIBLE |
Yes |
| GRID™ (GARMIN REMOTE INPUT DEVICE) COMPATIBLE |
Yes |
| WIRELESS REMOTE COMPATIBLE |
Yes |
| SAILING FEATURES |
Yes |
| Sonar Features & Specifications |
| DUAL-FREQUENCY (50/200 KHZ) SONAR CAPABLE |
Yes (with external black box, sold separately) |
| DUAL-BEAM (77/200 KHZ) SONAR CAPABLE |
Yes (with external black box, sold separately) |
| CHIRP SONAR TECHNOLOGY |
Yes (with external black box, sold separately) |
| CLEARVü |
Yes (with external black box, sold separately) |
| SIDEVü |
Yes (with external black box, sold separately) |
| Connections |
| NMEA 2000® COMPATIBLE |
Yes |
| NMEA 0183 INPUT PORTS |
1 |
| NMEA 0183 OUTPUT PORTS |
1 |
| VIDEO INPUT PORTS |
1 BNC |
| VIDEO OUTPUT PORTS |
1 HDMI |
| WIRELESS CONNECTIVITY |
Yes |
| J1939 COMPATIBLE |
Yes |
