Garmin GPSMAP 451 and 451s
Garmin GPSMAP 451 and 451s are standalone chartplotters and feature a 4-inch colour display. Both versions of the 451 marine systems come preloaded with BlueChart g2 marine charts for UK and Ireland and a worldwide basemap. The difference between the 451 and 451s is the s version comes with a sounder for defining depth contours, finding fish and locating objects underwater. You will need to purchase a transducer to enable the sounder to operate.
You can also add further mapping capabilities to the system using BlueChart g2 Vision mapping which provide satellite images and also has an Auto Guidance feature.
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The GPSMAP 451 is a compact chartplotter for use on the water. The 451 features high resolution, bright 4-inch QVGA colour display. The 451 is waterproof to IPX7 standards and the screen has also been enhanced to speed up the map drawing and panning features.
The GPSMAP 451 comes preloaded with marine charts for the UK and Ireland. There is also a basemap with satellite images. To make navigation quick and simple there is a high-sensitivity GPS receiver. You can also quickly mark and navigate to 3,000 waypoints or 100 routes.
The GPSMAP 451s version includes a sounder. The sounder enables the chartplotter to define the depth of the water, define where fish are and find objects underwater up to 610 metres (2000 feet) below the waters surface. However, for the sounder to function you'll need to separately buy a transducer. There are three types of transducers available. The specific one to buy depends on type of vessel/boat/rib and where or how you'd like to mount the transducer. The three are:
Transom Mount - for outboard powered boats and fits to the transom of the boat.
The 451s also has an alarm for fish size, shallow and deep water.
Both the GPSMAP 451 and 451S are NMEA 2000-compatible making it simple to connect to sensors, instruments and future marine products providing information such as engine, fuel, wind, VHF, autopilot and other data monitoring.
The GPSMAP 451/451s is preloaded with BlueChart g2 for the entire coastal waters of the UK and Ireland, plus Northen France, Belguim Netherlands and North West Germany which may be all you ever need.
However, the GPSMAP 451 also features an microSD card slot so you can load additional marine charts to the chartplotter. Also available are BlueChart g2 Vision, the g2 Vision version provides extra features including; 3D Mariners Eye for 3D information above the waterline and 3D Fish Eye for 3D information below the waterline. BlueChart g2 Vision maps also feature high-resolution satellite images for help when navigating unfamiliar waters. There is also an Auto Guidance feature that will navigate you along you chosen route avoiding shallow water, buoys and other obstacles.
Garmin g2 Vision are available in a variety of sizes from small areas e.g. The Solent and Channel Islands right up to a large area e.g. all the French coast. For more information about Garmin g2 Vision charts/maps click here.
Please note: g2 and g2 Vision versions are available for all charts.
Garmin GPSMAP 451 Features
4-inch VGA display
Sounder functions - GPSMAP 451s model ONLY
Sounder power: 500W (RMS), 4,000 W (PTP), with dual frequency transducer
Garmin GPSMAP 451 and 451s marine chartplotters are preloaded with Garmin BlueChart g2 UK and Ireland mapping (pictured right).
The chart features detailed marine cartography coverage of the British Isles in their entirety, including the Thames Estuary, Caledonian Canal, Outer Hebrides, Shetland and Orkney Islands, Isle of Wight, Isle of Man, and the Irish Sea.
Coverage across the English Channel from Douarnenez, France to Emden, Germany, including the Channel Islands, and the Seine River to Rouen, France Detailed coverage includes Antwerp, Belgium, Rotterdam, Netherlands, Amsterdam, Netherlands, and the Ijsselmeer in full. For more information about Garmin marine Bluecharts click here.
What's in the box? (when purchased from ActiveGPS.co.uk)
Garmin GPSMAP 451/451s
Garmin GPSMAP 451 Technical Specification