GPSMAP® 378

Part Number: 010-00542-00

Overview

Go straight from the box to your boat to your vehicle with the portable GPSMAP 378. Along with its counterpart, the GPSMAP 478, this combination color chartplotter and street navigator comes preloaded with detailed marine maps and detailed street maps, so you can find your way anywhere.

Head Straight for the Water

Ready for action right out of the box, the GPSMAP 378 comes preloaded with detailed U.S. Inland Lakes data, which boasts 10-meter resolution for more than 3200 lakes, many with depth contours. In addition, these built-in freshwater maps provide shoreline detail, river and creek channels, islands, boat ramps, campgrounds and more for tens of thousands of lakes across the continental U.S. — giving you the freedom to boat and fish anywhere in the states. The maps also show streams and rivers, tide stations and predictions, a wrecks and obstructions database and U.S. Coast Guard aids to navigation.

Go from Water to Land

When you're ready to drive home, take your 378 out of its marine mount and pop it into the automotive mount in your vehicle. Then press one button, and your 378 is ready to navigate you on the roads, with turn by turn directions and voice prompts that take you straight to your destination. The 378 is preloaded with detailed City Navigator maps for all of North America and contains over 6 million points of interest, including hotels, restaurants, gas stations, marinas, attractions and more.

Add Optional Weather, Audio and Sonar

See weather data on the 378's high-resolution TFT with the purchase of a GXM 30 XM antenna and a subscription to XM Satellite Weather and Radio services. View vital weather data, including NEXRAD radar, storm cells, wind speeds, surface temperatures, forecasts and more than a dozen other weather attributes, so you can enjoy the water without worrying about the weather. You can also subscribe to XM Satellite Radio to receive over 100 channels of commercial-free music, sports, news and talk radio.

For serious fishing, pair the 378 with the GSD™ 21 remote sounder, which offers 4,000 watts of power peak-to-peak (500 watts RMS) with a dual-frequency transducer (purchased separately).

Add More Marine Maps

The 378 accepts optional MapSource data cards, so you can add new maps without connecting to your computer. Optional BlueChart g2 data cards bring you 3D maps, tides and currents, depth contours, navaids, port plans, marine services, fishing charts and more.

GPSMAP 378: Loaded and ready for action, right out of the box

*Important Note About GPSMAP 378 Maps

WAAS enabled BlueChart g2 Compatible Here XM Satellite Weather

Specs

PDF Download detailed specs

Physical & Performance

Physical dimensions 5.7" x 3.2" x 1.9" (14.5 x 8.1 x 4.8 cm)
Display size, WxH 3.0" x 2.2" (7.6 x 5.6 cm)
Display resolution, WxH 480 x 320 pixels
Display type 256-color TFT
Weight 13.6 oz (385 g)
Water rating IPX7
Antenna Internal with external connection
NMEA 0183 compatible
SiriusXM™ Weather & Radio compatible
Mounting options Bail
Garmin Marine Network™ ports None

Maps & Memory

Preloaded maps Yes (lakes and roads)
Accepts data cards 1 Garmin Data Card
Waypoints 3,000
Routes 50
Track log 10,000 points; 20 saved tracks

Chartplotter Features

Garmin Sonar compatible Yes (with GSD 20 or GSD 21)
Supports DSC (displays position data from DSC-capable VHF radio)
Tide tables
GSD™ Black Box sonar support

Sonar Features & Specifications

Dual-frequency (50/200 kHz) sonar capable Yes (with compatible black box sonar)
Dual-beam (77/200 kHz) sonar capable Yes (with compatible black box sonar)

Connections

NMEA 0183 input ports 1
NMEA 0183 output ports 1
Video input ports None
Video output ports None

In the Box

  • GPSMAP 378
  • Preloaded with inland detailed maps with roads
  • Trip & Waypoint Manager
  • USB cable
  • Power/data cable
  • Marine mount
  • Automotive mount
  • Universal friction mount
  • Vehicle power cable
  • AC charger
  • Protective cover
  • Owner's manual
  • Quick reference guide

*Important Note About GPSMAP 378 Maps

Maps

Maps for New Regions

Need maps for other regions? See all maps that are compatible with this device.

Need a map update?

Update the maps that came with your device for the best navigation experience.

Check for Updates

Accessories

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