For boaters and watersports enthusiasts who want to run with the best, the rugged GPSMAP 78 features crisp color mapping, high-sensitivity receiver, new molded rubber side grips, plus a microSD™ card slot for loading additional maps. And it floats!
Automatic routing (turn by turn routing on roads)
Custom maps compatible
Sun and moon information
Ability to add maps
Custom POIs (ability to add additional points of interest)
Explore - GPSMAP 78 comes with built-in worldwide basemap, so you can navigate anywhere with ease. And, like the rest of the 78-series, the 78 is IPX7 waterproof and even floats in water.
Keep Your Fix - With its high-sensitivity, WAAS-enabled GPS receiver and HotFix™ satellite prediction, GPSMAP 78 locates your position quickly and precisely and maintains its GPS location even in heavy cover and deep canyons. The advantage is clear — whether you’re in deep woods or just near tall buildings and trees, you can count on GPSMAP 78 to help you find your way when you need it the most.
Add Maps - Adding more maps is easy with our wide array of detailed marine, topographic and road maps, available on microSD card. Conveniently plug in BlueChart® g2 preloaded cards (sold seperatley) for a great day on the water or City Navigator NT® map data (sold seperatley) for turn-by-turn routing on roads. The card slot is located inside the waterproof battery compartment, so you don't have to worry about getting it wet. GPSMAP 78 also supports BirdsEye™ Satelitte Imagery (required subscription through Garmin), that lets you download satellite images to your device and integrate them with your maps.
Get Connected - You've been busy exploring and now you want to store and analyze your activities. With a simple connection to your computer and to the Internet, you can get a detailed analysis of your activities and send tracks to your outdoor device using Garmin Connect™. This one-stop site offers an activity table and allows you to view your activities on a map using Google™ Earth. Explore other routes uploaded by millions of Garmin Connect users and share your experiences on Twitter® and Facebook®. Getting started is easy, so get out there, explore and share.
Find Fun - The GHP Reactor features patented Shadow Drive technology. This gives you the security of knowing you maintain control even when the autopilot is engaged. The Shadow Drive system automatically disengages the autopilot if the helm is turned, giving you the freedom to maneuver the boat. The autopilot automatically re-engages when you hold a steady course.
In the Box:
GPSMAP 78 Physical Specifications
Display size (w x h)
Display resolution (w x h)
3.6 x 5.5 cm
(1.43 x 2.15 in)
160 x 240 pixels
(65-K color TFT)
6.6 x 15.2 x 3.0 cm
(2.6 x 6.0 x 1.2 in)
GPSMAP 78 Maps and Memory Specifications
Accepts data cards
10000 points, 200 saved tracks
microSD™ card (not included)
GPSMAP 78 Battery and Interface Specifications
2 AA batteries (not included);
NiMH or Lithium recommended