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Garmin GPSMAP 238 Sounder    

The dual frequency 238 Sounder combines chartplotter and sounder capabilities in one unit which installs easily in open cockpit and overhead boxes.

With a built-in worldwide basemap, the GPSMAP 238 Sounder will accept data cards programmed with GARMIN BlueChart marine cartography or data from most MapSourceT CD-ROM products.

GPSMAP 238 Sounder is designed to provide precise GPS positioning using correction data obtained from the Wide Area Augmentation System (WAAS). GPSMAP 238 Sounder will provide position accuracy to less than three meters when receiving WAAS corrections and also accepts RTCM-104 differential corrections.

• 3000 user waypoints with name and graphic symbol; 50 reversible routes with 50 waypoints/route
• Audible alarms for anchor drag, arrival, off-course, proximity waypoint and clock
• 2500 point automatic track log; 15 saved tracks let you retrace your path in both directions, 500 points/saved track
• Position formats include Lat/Lon, UTM, Loran TDs, Maidenhead, MGRS and user grid
• Course and speed filtering
• Built-in celestial tables
for sun and moon calculations
• 7.5"H x 7.7"W x 2.6"D
• Remote quad helix receiving antenna, with 30 ft. cable
• Transmit frequency: 50/200 kHz (40°/10°)
• Transmit power: 500 watts RMS, 4000 watts peak-to-peak
• Auto bottom tracking with 2X, 4X zoom levels
• Split screen combining both map and sounder data
• Simultaneous display of both 50kHz and 200 kHz frequencies
• Graphic whiteline for clear image of bottom hardness and structure
• Underwater waypoints to capture position and depth
• See-Thru®
technology separates fish from thermoclines and structure

NOTE: A transducer is required for operation of the GPSMAP 238 Sounder. A plastic, transom mount transducer with depth and temperature and a separate speed sensor is supplied with 010-00250-11. If you wish to use another type of transducer you could purchase the GPSMAP 238 Sounder without a transducer (010-00250-10) and pair it with one of GARMIN's range of dual-frequency transducers. Click here for a list of compatible transducers.


Ships with: Unit, GA29 External Antenna and 30' Cable, Power/Data Cable, Protective Cover, Gimbal Mount and Knobs, Owner's Manual, Quick reference guide  

GPSMAP 238 Sounder With Transducer
GPSMAP 238 Sounder Without Transducer
(Transducer required for operation)

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