Replacement for the Map 451.  New features include:

• Improved high-speed digital design for increased map drawing and panning speeds.
• Now NMEA 2000 Compatible 

The sleek GPSMAP 451 features preloaded detailed maps for the U.K. as well as an ultra-bright 10 cm QVGA display; built-in, satellite-enhanced worldwide basemap and simplified user operation.

The MAP 451 is supplied with internal GPS antenna, however an external antenna can be bought as an optional accessory (see accessories button).

Navigate with Ease

The 451 includes detailed coastal maps for the U.K. as well as a worldwide basemap of satellite images for other areas. The 450 also has an SD™ card slot that makes it easy to add additional maps without connecting to a computer. With just a few buttons and a simple, intuitive interface, the 450 makes navigating your way through the water easy.

Add Sonar

The sounder version, GPSMAP 451s, has the option of connecting a powerful dual frequency transducer that clearly paints depth contours, fish targets and structure when you're fishing. The 451 and 451s 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 chart 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.

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 input/output:	NMEA 0183

Maps & Memory:
Basemap:	yes
Preloaded maps:	yes
Ability to add maps:	yes
Built-in memory:	none (cannot load maps to internal memory)
Accepts data cards:	SD™ card slot
Waypoints/favorites/locations:	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
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:	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