Available in three models:
- GPSMAP 421 : 010-00764-00 Chartplotter only, will not accept a transducer
- GPSMAP 421S : 010-00764-02 Display Only, No Transducer
- GPSMAP 421S : 010-00764-01 Dual Frequency Transducer
The GPSMAP 421 is a compact chartplotter that features an ultra-bright 4” QVGA color display along with an improved high-speed digital design for increased map drawing and panning speeds. It’s ready to go with a built-in, satellite-enhanced worldwide basemap and an easy-to-use interface designed to help you navigate the open waters with ease. The GPSMAP 421 also accepts BlueChart® g2 Vision cards for added features and functionality such as high-resolution satellite imagery, 3D views and Auto Guidance technology.
View Satellite-enhanced Worldwide Basemap
The GPSMAP 421 basemap contains worldwide satellite images in place of traditional maps. The GPSMAP 421 also comes standard with a high-sensitivity GPS receiver for superior satellite tracking and quicker acquisition times. In addition, the GPSMAP 421 can receive U.S. graphical weather data via optional GXM 51 satellite receiver/antenna. And with an SD card slot, it’s easy to add additional maps without connecting to a computer.
Add Sonar
Where applicable, the sounder version, GPSMAP 421s, comes with a powerful dual-frequency transducer that clearly illustrates depth contours, fish targets and structures whether you’re fishing in freshwater or off the coast. The GPSMAP 421 and GPSMAP 421s are also NMEA 2000-certified for easy connectivity with sensors, instruments and future marine offerings.
Add Extras with BlueChart g2 Vision
With the optional BlueChart g2 Vision SD card, you can add a whole new dimension of exceptional features to your chartplotter.
- 3D Mariner’s and Fish Eye view provides you with a 3-dimensional perspective of map information, both above and below the waterline
- High-resolution satellite images and aerial photographs help you orient yourself in unfamiliar areas
- Auto Guidance technology searches through all relevant charts to create a route you can actually follow — one that avoids obstacles, shallow water, buoys and other obstructions
Specifications:
- Unit dimensions, WxHxD: 5.7" x 5.0" x 2.7" (14.5 x 12.7 x 6.9 cm)
- Display size, WxH: 2.4" x 3.2", 4.0" diagonal (6.1 x 8.1 cm, 10.2 cm diagonal)
- Display resolution, WxH: 240 x 320 pixels
- Display type: QVGA display
- Weight: 1.3 lb (590 g)
- Waterproof: yes (IPX7)
- High-sensitivity receiver: yes
- Antenna: internal
- NMEA input/output: NMEA 0183 compatible and NMEA 2000 certified
Maps and Memory:
- Basemap: yes
- Preloaded maps: no
- Ability to add maps: yes
- Built-in memory: none (cannot load maps to internal memory)
- Accepts data cards: SD card slot
- Waypoints/favorites/locations: 3,000
- Routes: 100
- Track log: 10,000 points; 50 saved tracks
Features:
- Garmin radar compatible: no
- Garmin sonar compatible: yes (421s model)
- CANet compatible: no
- Garmin Marine Network compatible: no
- Touchscreen: no
- Supports AIS (tracks target ships' position): yes
- Supports DSC (displays position data from DSC capable VHF radio): yes
- Audible alarms: yes
- Tide tables: yes
- Hunt/fish calendar: no
- Sun and moon information: yes
- 3-D map view: yes (with optional BlueChart g2 Vision card)
- Auto Guidance: yes (with optional BlueChart g2 Vision card)
- Automatic routing (turn by turn routing on roads): no
- XM WX Weather & Radio for U.S. compatible: yes
