Meet the Garmin GPSMAP 1242xsv 12-inch Chartplotter/Sonar Combo — an all-in-one navigation and sonar powerhouse designed for serious boating in U.S. and Canadian waters. This unit is a "No transducer" configuration, giving you the freedom to pair the transducers you prefer (transducers sold separately) while you unlock a comprehensive suite of tools for planning, navigating, and scanning.
Brilliant display and intuitive control
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Large, bright 12" screen paired with a tactile keypad and multifunction control knob for fast, precise operation in any conditions.
Extensive mapping and charting
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Preloaded Navionics+ charts for coastal and inland waters in the U.S. and Canada, plus support for optional Navionics Vision+ premium map content for even greater detail.
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Auto Guidance+ technology helps with planning routes (note: Auto Guidance+ is for planning purposes and does not replace safe navigation operations).
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Quickdraw Contours software and access to the Quickdraw Community on Garmin Connect for easy map creation and sharing.
Advanced sonar and real-time scanning
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Built-in CHIRP sonar with CHIRP ClearVü and SideVü scanning for crisp, live underwater views.
- Supports Panoptix and LiveScope sonar products (LiveScope Plus System and other transducers sold separately) for real-time perspective below and around your boat.
- Live sonar integration combined with the powerful 12" display for a truly immersive fishing and navigation experience.
Connectivity and networked versatility
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Built-in Wi‑Fi to pair with the free ActiveCaptain app for OneChart, smart notifications, Quickdraw Community data, and more.
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Garmin Marine Network collaboration lets you share sonar, maps, radar, IP cameras, and data across multiple units, with NMEA 2000/0183 network support for autopilots, weather, VHF, AIS and other sensors.
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ANT connectivity for use with compatible quatix watches, gWind Wireless transducers, GNX Wind marine instrument, and wireless remotes (sold separately).
Performance and compatibility
- See RPMs, fuel flow, temperature, trim, and more for up to four Mercury engines via the SmartCraft Connect gateway.
- Integrated support for autopilots, digital switching, weather, media, and other sensors through Garmin Marine Network and NMEA connections.
Why choose the GPSMAP 1242xsv 12" Comb
Designed for precision navigation and rich sonar insight, this Garmin combo delivers a robust, scalable platform that grows with your rig — whether you’re charting new waters, chasing bites with LiveScope, or coordinating a multi-display network on deck. Its no-transducer setup means you can tailor your sonar array to your specific needs while enjoying Garmin’s industry-leading mapping, community-driven data, and advanced planning tools.
| 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 |
| 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 |
