On the inside, the GPSMAP 176 and 176C come equipped with a built-in basemap and are enhanced by Garmin's BlueChart™ marine cartography, a miniature-size chip that inserts into the unit and provides additional offshore map detail. The cartography includes detailed depth contours, inter-tidal zones, spot soundings, wrecks, navaids, port plans, restricted areas, cable areas, anchorages and much more. For use in a car, the GPSMAP 176 and 176C can accept downloadable information from most Garmin MapSource products such as MetroGuide U.S.A. CD-ROM (data card and usb card programmer required). A special mounting bracket is available that will allow this product to be temporarily mounted in a car.

Specifications

Basemap: Built-in Americas Highway, Atlantic Highway or Pacific Highway basemap with oceans, lakes, rivers, cities, interstates or major motorways, principal and major thoroughfares and political boundaries.

Data Cartridge: Preprogrammed micro cartridges containing detailed BlueChart™ marine cartography.

MapSource: Compatible with most Garmin MapSource™ products including MapSource BlueChart™ marine cartography, MetroGuide™, and Fishing Hot Spots™. Garmin data card required.

Navigation Features


Waypoints/icons: 3000 with name and graphic symbol, and comments, as well as proximity support

Routes: 50 reversible routes with up to 254 points each, plus MOB and TracBack® modes

Tracks: 2500-point automatic track log; 15 saved tracks; 500 points per saved track let you retrace your path in both directions

Trip computer: Trip odometer, stopped time, moving average, moving time, total average, total time, maximum speed, odometer

Alarms: Anchor drag, arrival, off-course and proximity waypoint, clock, shallow water, and deep water

Tables: Built-in celestial tables for best times to fish and hunt, sunrise and sunset, sun and moon by date and position

Map datums: More than 100 plus user datum

Position format: Lat/Lon, UTM/UPS, Maidenhead, MGRS, Loran TDs and other grids, including user grid

GPS Performance


Uploadable Maps: Compatible with most MapSource™ products including Garmin BlueChart™ marine cartography, MetroGuide™ and Fishing Hot Spots™
Receiver: WAAS-enabled, 12 parallel channel GPS receiver continuously tracks and uses up to 12 satellites to compute and update your position

Acquisition times:

Warm: Approximately 15 seconds
Cold: Approximately 45 seconds
AutoLocate™: Approximately 2 minutes
Update rate: 1/second, continuous

GPS accuracy:

Position: < 15 meters, 95% typical*
Velocity: 0.05 meter/sec steady state
DGPS (USCG) accuracy:
Position: 3-5 meters, 95% typical*
Velocity: 0.05 meter/sec steady state
DGPS (WAAS) accuracy:
Position: < 3 meters, 95% typical*
Velocity: 0.05 meter/sec steady state
Dynamics: 6 g's

Interfaces: RS232 with NMEA 0183, RTCM 104 DGPS data format and proprietary Garmin

Antenna: Removable quad-helix

Differential: DGPS (USCG and WAAS capable)

Power


Source: Four "AA" batteries (not included)

Battery Life: 4 to 16 hours based on backlight setting

Physical


Size: 3.40"H x 6.18"W x 2.25"D

Weight: Approx. 1.5 lbs. with batteries

Display:

3.8" diagonal, high resolution
320 x 240 pixels
(GPSMAP 176C) 16-color transflective display with backlighting
(GPSMAP 176) 12-level gray high-contrast FSTN with backlighting
Case: Fully gasketed, high-impact plastic alloy, waterproof to IEC 529 IPX7 standards

Temperature range: 5°F to 158°F (-15°C to 70°C)

User data storage: Indefinite, no memory battery required

Specifications are subject to change without notice.

* Subject to accuracy degradation to 100m 2DRMS under the United States Department of Defense-imposed Selective Availability Program.

**These units are also able to transfer waypoints, routes, and tracks between the PC and GPS using MapSourceª.