The GPSMAP 420 is a sleek, space-saving chartplotter that features an ultra-bright 4” QVGA display; built-in, satellite-enhanced worldwide basemap and simplified user operation. The 420 also has an SD card slot so you can add additional features with the optional BlueChart® g2 Vision card.

View Satellite-enhanced Maps

The 420’s basemap contains worldwide satellite images in place of more traditional maps, and its SD card slot makes it easy to add additional maps without connecting to a computer. With fewer keys and a simple, intuitive interface, the 420 makes navigating your way through the water easy.

Add Sonar

Where applicable, the sounder version, GPSMAP 420s, comes with a powerful dual frequency transducer that clearly paints depth contours, fish targets and structure whether you’re fishing in freshwater or off the coast. The 420 and 420s are also CANet™ compatible, so you can share sounder data with another chartplotter on your boat.

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 eye view or fish eye view provides you with a 3-dimensional perspective of map information, both above the waterline and below it.
• 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.

Sounder Features:

• New sounder design featuring excellent shallow water performance
  
• Power output: 500 watts (RMS) 4000 watts (peak to peak), dual frequency
  
• Depth: 1,500 feet (dual frequency)
  
• Dual frequency transducer 50kHz (45°), 200kHz (10°) for maximum saltwater performance
  
• Patented transom/trolling mount transducer
  
• UltraScroll™ high rep rate sonar provides lightning-fast screen updates
  
• New AutoGain technology enhances target visibility
  
• See-Thru technology: shows weak and strong returns simultaneously
  
• Water temperature log graphically records water temp data
  
• Round flasher display mode (in dual beam mode) and A-scope (in dual frequency mode)
  
• Whiteline
  
• Adjustable depth line helps gauge desired fishing levels and bottom clearance
  
• Split zoom display offers a closer look at fish targets and bottom structure
  
• 2X, 4X and bottomlock zoom
  
• Adjustable keel offset
  
• Alarms for fish size, shallow water, deep water and low battery

Physical & Performance:
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)
Battery:	none
Battery life:	none
Waterproof:	yes (IPX7)
Antenna:	internal
NMEA output:	NMEA 0183
RoHS version available:	no

Maps & 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:	1,500
Routes:	20
Track log:	10,000 points; 20 saved tracks

Features:
Garmin radar compatible:	no
Garmin sonar compatible:	yes
CANet™ compatible:	yes
Garmin Marine Network™ compatible:	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
3D 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:	no
Voice prompts (e.g. "Turn right in 500 ft."):	no
Remote control:	no
Headphone jack/audio line-out:	no
Audio/video input/output:	no
Portable:	no
Automotive/motorcycle-friendly:	no

Standard Configuration:
GPSMAP 420

built-in receiving antenna,

power/data cable,

transom mount transducer,

crimp connectors,

mounting bracket with tilt/swivel,

protective front cover,

owner's manual and quick reference guide.

Product SKU: 010-00516-22