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We may earn a commission when you buy thru our links.

Garmin GPSMAP 178C – For Sale

• New / Used Garmin 178C •

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Built-In 500W Sounder | 50/200kHz

December 6, 2023 7:38 pm EST

Garmin 178C Specifications

Dimensions	6.3″ x 4.9″ x 2.8″
Weight	1.2 lb (553 g)
Waterproof	IPX7
Display Type	256-color CSTN
Display Size	3.2″ x 3.2″
Display Resolution	320 x 320 pixels
Mounting Options	Bail with Swivel or Flush
Accepts Data Cards	1 Garmin Data Card
Waypoints	3,000
Navigation Routes	50
Receiver	GPS Receiver
NMEA 0183 Compatible	Yes
DSC	Yes
NMEA0183 Input Ports	2
Video Input Ports	None
Video Output Ports	None
Garmin Marine Network Ports	None

• Current Listings •

Garmin GPSMAP 178C – Show All Listings

Garmin 178C Replacement | Upgrade | Best Price

Downloadable Manual

Garmin 178C – Manual

Garmin 178C – Features

Performance

High-contrast, 256-color LCD screen with backlighting
12-channel GPS for fast, accurate positioning
WAAS Capable – receive signals from the additional set of WAAS satellites for better accuracy
Differential-Ready – optional Garmin beacon receiver for better than 5-meter accuracy
Waterproof to IPX7

Advanced Navigating & Plotting

3000 alphanumeric waypoints | selectable icons | comments | depths & water temp
Built-in Worldwide marine basemap to 20 miles | detailed ocean, river and lake coast-lines
50 reversible routes with up to 50 waypoints each
Uploadable maps using Garmin’s MapSource™ PC products & BlueChart™ Data Cards
Coordinates: Lat/Lon, UTM/UPS, Loran TD, plus over 20 grids, including Maidenhead
TracBack route feature to quickly retrace your track to a starting position
15 Saved Tracks
Built-in simulator mode
Built-in tide information from over 3,000 tide stations | USA coastline, Alaska, Hawaii, western Canada and several Caribbean Islands

Superior Fishfinder

Dual Frequency 50/200kHz | 500w Power output
Whiteline feature provides a clear image of both bottom hardness and structure
See-Thru® technology helps separate fish returns from thermoclines and structure
Multiple zoom levels with a moving view window
Underwater waypoint marking
Map/Sonar split screen combines navigation and fishfinding information
Fish and depth alarms

Garmin 178C – Sonar

Garmin GPSMAP 178C - Dual Frequency Sounder

Garmin 178C – Dual Frequency Sounder

Garmin GPSMAP 178C

Garmin 178C Power / Data

Power/Data Connections – The power/data cable connects the GPSMAP 178C to a DC system and provides interface capabilities for connecting external devices.

The color code in the diagram above shows harness connections.