The Garmin GPSMAP 431 Compact Chartplotter with U.S. Inland Lake Maps features an ultra-bright 4 inch 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 basemap preloaded with U.S. Inland Lakes and an easy-to-use interface designed to help you navigate the open waters with ease. This unit also accepts BlueChart g2 Vision cards for added features and functionality such as high-resolution satellite imagery, 3D views and Auto Guidance technology.
50 of 52 people found the following review helpful
Awesome Chartplotter, best price at Amazon!, December 7, 2010
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Adam - See all my reviews
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This review is from: Garmin GPSMAP 441s 4-Inch Waterproof Marine GPS and Chartplotter with Sounder (Electronics)
If you are looking for a compact, user friendly GPS Chartplotter/Sounder; buy this one. Garmin is the best, most fairly priced plotter/sounders available. My only regret was not buying the 541s. That 1 inch make a difference. I've been on the water ny whole life and for the money the 441s and 541s are the best plotters available. Amazon has the best prices on them too. WOuld have recieved 5 stars but add and tech infor doesn't state how long the transducer wire is. I took a chance and it fit with some room to spare. Transducer wire is 25-30 ft long. I also recommend buying the transducer with speed and water temp.
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32 of 35 people found the following review helpful
NO Map included/ don't like alphabet scroll when naming a position, August 13, 2010
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Geneva - See all my reviews
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This review is from: Garmin GPSMAP 421 4-Inch Waterproof Marine GPS and Chartplotter (Electronics)
The description leads one to believe it has a U.S. base map installed. Unless I'm doing something wrong it has no map what so ever. Be prepared to spend another $99 to upload any kind of map. Yes, it is of good quality. Installation is a snap. Most of us will only use the ground and hot wire. More advanced installation will provide you with leads to your radio and other communication devices. Ease of use is good, you will have to page through a lot to find what you want though. One thing I really don't like is once you mark your position you have to page forward twice to name it then scrolling through the alphabet characacters is like pulling teeth. Don't get me wrong. I will rate it good for value, just remember you get what you pay for. If I had to do it all over I would spend the extra money for a better model.
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35 of 39 people found the following review helpful
A bit confusing to set up but very nice once you read the instructions, June 26, 2010
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I'm A Retired Biker now "Da-retired Biker" (South West, Florida, US) - See all my reviews
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This review is from: Garmin GPSMAP 421 4-Inch Waterproof Marine GPS and Chartplotter (Electronics)
Not bad just a little hard to set up the different screens on it.
But with nothing added right out of the box you can do quite a few things it has a tracking thing it has a speedometer and charts of where you are going and where you have been it has a chart plotter a man over board maker a track marker quite a lot and it does quite a bit without adding the transducer or antenna or any of the other add-on's it is easy to wire up to the boat there are a lot of wires when you open it up and it scared the crap out of me they were maybe 20 or 30 wires but do not worry you only need couple of them A Positive and a ground and thats pretty much it for the basic operation and like I said you really get a lot in my opinion..
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