GPSMAP® 298 Sounder

Part Number: 010-00507-00


Own the lake with the GPSMAP 298 Sounder and its counterpart, the GPSMAP 292. With a powerful built-in sounder and enhanced worldwide basemap, the 298 can handle any fishing adventure.

Catch Some Fish

The 298 comes with a built-in dual-frequency 500-watt (RMS) sounder with Garmin’s exclusive See-Thru® fish targeting technology. The sounder features Ultrascroll® for high-speed screen updates and can show both the sonar and map on the screen at the same time. And, it can even connect to another chartplotter or sounder with Garmin's proprietary CANet™ connection.

Chart Your Course

The GPSMAP 298 features an enhanced worldwide basemap that depicts shorelines, roads and surface features in richer detail. The 5-inch screen shows details in bright, crisp color. And for even more detail, the 298 also accepts preloaded BlueChart® g2 data cards, including bathymetric data.

The 298 is available in several versions: The UK version comes preloaded with UK and Ireland BlueChart g2 detailed maps. The Australian and New Zealand versions also comes preloaded with BlueChart g2 marine map detail for that region. All versions come preloaded with over 15 languages for ease of use.

GPSMAP 298 Sounder: Ready for adventure on the high seas

WAAS enabled BlueChart g2 Compatible


Physical & Performance

Physical dimensions 6.3" x 6.2" x 3.1" (16.0 x 15.7 x 7.8 cm)
Display size, WxH 3.0" x 4.0", 5.0" diagonal (7.6 x 10.2 cm, 12.7 cm diagonal)
Display resolution, WxH 234 x 320 pixels
Display type 256-color TFT
Weight 2.0 lb (908 g)
Water rating IPX7
Antenna Internal with external connection
NMEA 0183 compatible
Power consumption 14 watts max. at 13.8 vDC
Mounting options Bail with Swivel or Flush
Garmin Marine Network™ ports None

Maps & Memory

Accepts data cards 1 Garmin Data Card
Waypoints 3,000
Routes 50
Track log 10,000 points; 15 saved tracks

Chartplotter Features

Garmin Sonar compatible
Supports AIS (tracks target ships position)
Supports DSC (displays position data from DSC-capable VHF radio)
Tide tables

Sonar Features & Specifications

Dual-frequency (50/200 kHz) sonar capable
Dual-beam (77/200 kHz) sonar capable
Frequencies supported 50/77/200 kHz
Transmit power 500 watts (RMS); 4,000 watts (peak to peak)
Maximum depth 1,500 ft (dual frequency); 900 (dual beam)
Bottom lock (shows return from the bottom up)
Water temperature log and graph


NMEA 0183 input ports 1
NMEA 0183 output ports 1
Video input ports None
Video output ports None

In the Box

  • GPSMAP 298C Sounder
  • Internal or external antenna
  • Transom-mount transducer (optional)
  • Swivel mount bracket
  • Protective front cover
  • Power/data cable
  • Owner's manual
  • Quick reference guide