Contents of the PackageGPSMAP 378
Preloaded with inland detailed maps with roads
Trip & Waypoint Manager
Universal friction mount
Vehicle power cable
Quick reference guide
FeaturesOn the Water
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.
On the Land
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 real-time weather 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 let you view real, detailed aerial photos of harbors, marinas and other important marine landmarks and places, right on your chartplotter.
The GPSMAP® 378 comes preloaded with U.S. Inland Lakes and City Navigator NT data. These two detailed sets of maps are combined together in the 378 to form one large, comprehensive set of data that covers both land and sea.
Because of the unique way the map data has been combined and loaded, the GPSMAP 378 is not compatible with Garmin's City Navigator NT North America DVD, which is sold separately. For example, if you use this City Navigator NT DVD to plan routes on your computer and transfer them to the 378, the unit will recalculate each transferred route.
Physical & Performance:
Unit dimensions, WxHxD: 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)
Battery: rechargeable internal lithium-ion
Battery life: up to 9 hours
Waterproof: yes (IPX7)
NMEA input/output: NMEA 0183
RoHS version available: no
Maps & Memory:
Preloaded maps: yes (inland maps)
Ability to add maps: yes
Built-in memory: none (cannot load maps to internal memory)
Accepts data cards: Garmin data cards
Track log: 10,000 points; 20 saved tracks
Garmin radar compatible: no
Garmin sonar compatible: yes
CANet® compatible: no
Garmin Marine Network™ compatible: no
Supports AIS (tracks target ships' position): no
Supports DSC (displays position data from DSC capable VHF radio): yes
Audible alarms: yes
Tide tables: yes
Hunt/fish calendar: yes
Sun and moon information: yes
3-D map view: no
Auto Guidance: no
Automatic routing (turn by turn routing on roads): yes
XM WX Weather & Radio for U.S. compatible: yes
Voice prompts (e.g. "Turn right in 500 ft."): yes (12v/speaker)
Speaks street names (e.g. "Turn right ON ELM STREET in 500 ft."): no
Remote control: no
Headphone jack/audio line-out: yes
Audio/video input/output: no