Garmin GPSMAP 188
Sounder
The GPSMAP 188/188C Sounder install easily in open cockpit and
overhead boxes, and feature a quick map redraw using a high-speed RISC
processor. These units combine chartplotter and sounder capabilities in one
unit, with split-screen capability so you can view your position and sounder
information at the same time. For the GPSMAP 188 Sounder, detailed marine
cartography is presented on a high-resolution (240 x 360 pixels), 10-level
grayscale, liquid crystal display. For the GPSMAP 188C Sounder, the display is a
high-resolution (234 x 320 pixels), 16-color TFT display.
Featuring a built-in worldwide basemap, the GPSMAP 188/188C
Sounder is fully compatible with Garmin's new BlueChart® marine cartography and
many MapSource® CD-ROM products, including Fishing Hot Spots. These units are
designed to provide precise GPS positioning using correction data obtained from
the Wide Area Augmentation System (WAAS). They also provide position accuracy to
less than three meters when receiving WAAS corrections. The GPSMAP 188/188C
Sounder also accept RTCM-104 differential corrections.
The GPSMAP 188C Sounder offers daylight-viewable color as an
option to the monochrome display of the GPSMAP 188 Sounder.
Specifications
Plotter/Moving
Map Features
Basemap:
Built-in Worldwide Marine basemap to 32 nm with coastlines, rivers, lakes,
political boundaries, tide data for the U.S., cities and interstates.
Data Cartridge: Preprogrammed micro cartridges containing
detailed BlueChart® marine cartography
MapSource: Compatible with most Garmin MapSource™ products
including MapSource BlueChart™ marine cartography and Fishing Hot Spots™. Garmin
data card required.
MapSource®: Compatible with most Garmin® MapSource products
including MapSource BlueChart marine cartography and Fishing Hot Spots. Garmin
data card required.
Navigation Features
Waypoints/icons: 3000 with name, symbol and comments; support for
proximity waypoints
Routes:
GPSMAP® 188: 50 reversible routes with up to 50 points each,
plus MOB and TracBack® modes
GPSMAP 188c: 50 reversible routes with up to
254 points each, plus MOB and TracBack modes
Tracks: 3000 point automatic
track log, 15 saved tracks; 500 points per saved track, lets you retrace your
path in both directions
Trip computer: Current speed, average speed, resettable max.
speed, trip timer and trip distance
Alarms: Anchor drag, arrival, off course, proximity waypoint and
clock
Tables: Built-in celestial tables with sun and moon rise, set,
and location; tide tables for the U.S.
Map datums: More than 100, plus user datum
Position format: Lat/Lon, UTM/UPS, Loran TDs and other grids,
including user grid
GPS Performance
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 5 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: 2-RS232 with NMEA 0183, RTCM 104 DGPS data format
and proprietary Garmin
Antenna: GA 29 remote marine mount with 30' cable or bail mount
antenna
Depth Sounder Features
Frequency: 50/200 kHz (40'/10')
Sonar power output: 500 watts (RMS), 4000 watts (peak to
peak)
Depth: 1500 foot max depth**
See-Thru®¨ technology: Shows weak/strong returns
simultaneously
Depth control gain (DCG®¨): Automatically adjusts fishfinder
sensitivity according to
depth
Power
Source: 8-35
Vdc
Usage: 8 watts max. at 13.8 Vdc
Physical
Size: 6.3" W x 6.2" H x 2.6" D
Weight: 1.7 lbs. (.77 kg)
Display:
GPSMAP 188 — 5.5" diagonal (14.0 cm) high-resolution, 10-level
grayscale LCD with backlighting (240 x 360 pixels)
GPSMAP 188C — 5.0"
diagonal (12.7 cm) high-resolution, 16-color TFT with backlighting (234 x 320
pixels)
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)
Specifications are subject to change without
notice.
* Subject to accuracy degradation to 100m 2DRMS under the U.S.
Department of Defense-imposed Selective Availability (SA) Program.
** Depth capacity is dependent on water salinity, bottom type,
and other water conditions.
Package includes:
GPSMAP®
188/188C
Basemap:
Worldwide Marine
Power/Data cable
Owner's manual
Quick reference
guide
