Experience the Garmin GPSMAP® 1242xsv 12-inch Chartplotter/Sonar Combo — an all-in-one marine navigation solution built for serious cruising and fishing. Preloaded Garmin Navionics+ coastal charts and inland mapping cover the U.S. and Canada, while the included GT52‑TM transducer delivers CHIRP sonar along with high‑resolution CHIRP ClearVü and CHIRP SideVü scanning for vivid imagery below and to the sides of your boat.
The 12" large, bright display pairs with an intuitive keypad interface and a multifunction control knob for quick, one‑handed operation on deck. This unit also supports Panoptix™ and LiveScope™ sonar products (transducers sold separately) for real‑time, in‑the‑water visibility and game‑changing situational awareness.
Auto Guidance+ technology helps you plan routes and save time by providing safe navigation options (Auto Guidance+ is for planning purposes only and does not replace safe navigation operations). You can also opt for optional Navionics Vision+ premium map content for even richer detail on demand.
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All‑in‑one navigation and sonar: Chartplotter, CHIRP sonar, ClearVü and SideVü scanning in a single system.
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Included GT52‑TM transducer: Garmin CHIRP sonar plus live scanning sonar for precise bottom detail.
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Preloaded Navionics+ charts: Coastal and inland coverage for U.S. and Canada, with Auto Guidance+; Navionics Vision+ optional.
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Live sonar options: Panoptix and LiveScope (transducers sold separately) for real-time imaging and enhanced target detection.
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Connectivity and sharing: Garmin Marine Network for sharing sonar, maps, radar, and data across multiple units; NMEA 2000/0183 support for autopilots, weather, VHF, AIS, digital switching, and more; ANT connectivity for quatix watches and other sensors.
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Smart features: Built‑in Wi‑Fi to pair with the ActiveCaptain app, OneChart, and Garmin Quickdraw Contours mapping with Quickdraw Community via Garmin Connect.
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Mercury integration: See RPMs, fuel flow, temperature, trim and more for up to four Mercury engines via the SmartCraft Connect gateway.
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Advanced sailing tools: Garmin SailAssist features include laylines, race features, set and drift, wind data, and more to optimize cruising and racing.
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Future-ready: Integrated ANT connectivity supports compatible quatix smartwatches, gWind Wireless 2 transducer, GNX Wind marine instrument, and remote controls (sold separately).
Whether you’re navigating rugged coastlines, fishing for trophies, or planning intricate routes, the GPSMAP 1242xsv delivers a bright, intuitive interface and a scalable ecosystem designed to grow with your boat and adventures.
| Performance and Physical |
| Dimensions |
14.1" x 8.9" x 2.7" (35.8 x 22.6 x 6.9 cm) |
| Display size |
10.3" x 6.4" (26.2 x 16.3 cm) |
| Display resolution |
1280 x 800 |
| Display type |
WXGA display |
| Weight |
5.2 lbs (2.34 kg) |
| Water rating |
IPX7 |
| Power consumption |
Max power usage at 10 Vdc: 34.8 W |
| Antenna |
Internal or external over NMEA 2000 |
| Mounting options |
Bail or flush |
| Receiver |
10 Hz high-sensitivity |
| Garmin Marine Network™ ports |
2 |
| Preloaded maps |
Garmin Navionics+ coastal and inland water charts for the U.S. and Canada |
| Accepts data cards |
2 SD™ cards |
| Waypoints |
5,000 |
| Routes |
100 |
| Track log |
50,000 points; 50 saved tracks |
| Tide tables |
Yes |
| Garmin Radar compatible |
Yes |
| Garmin Sonar compatible |
Yes (built-in) |
| 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 |
| Garmin Meteor™ Audio System compatible |
Yes |
| Supports FUSION-Link™ compatible radios |
Yes |
| GSD™ Black Box sonar support |
Yes |
| GCV™ Black Box sonar support |
Yes |
| ActiveCaptain compatible |
Yes |
| Garmin Helm compatible |
Yes |
| GRID™ (Garmin Remote Input Device) compatible |
Yes |
| Wireless remote compatible |
Yes |
| Dual-frequency (50/200 kHz) sonar capable |
Yes |
| Dual-beam (77/200 kHz) sonar capable |
Yes |
| Transmit power |
1 kW traditional; 1 kW CHIRP |
| CHIRP sonar technology |
Yes (Built-in) |
| ClearVü |
Yes with CHIRP (built-in) |
| SideVü |
Yes with CHIRP (built-in) |
| Maximum depth |
5,000 ft at 1kW (depth capacity is dependent on water bottom type and other water conditions) |
| Bottom lock (shows return from the bottom up) |
Yes |
| Water temperature log and graph |
Yes |
| Sonar recording |
Yes |
| Sonar history rewind |
Yes |
| NMEA 2000® compatible |
Yes |
| Transducer pin numbers |
12 |
| NMEA 0183 input ports |
1 |
| NMEA 0183 output ports |
1 |
| Video input ports |
1 BNC |
| Video output ports |
None |
| Wireless connectivity |
Yes |
