Garmin GPSMAP 478

usability, performance, screen, memory, route planning

value for money

88% of reviews on Amazon.com give this product a positive rating.

Outstanding product! Kit contains everything you need for boating and automobile usage and its user friendly converting easily from water to street applications. Large screen with great backlighting making it easy to see while on the water in poor...

This is a wonderful gps-very accurate. This is the first one I have used and it is very easy to understand. I wish I had read description better-there are no fresh water lakes included. The value is great for this product.

The 478 is perfect for roads and coastal waters. However, the chip available for additional information regarding inland lakes does not include the Army Corps of Engineers flood control lakes in the Northern PA area.

Does everything it claims to do and does it well, on both land and sea. Great battery life and good sensitivity and satellite reception.

Much better than I expected...I wish I had it 2 months earlier. The mapping details are excellent...it has street maps & coastal charts. The screen size, coloring & resolution makes it quick & easy to read at a glance. It is user friendly. It is much...

Worked great with wonderful definition and visuals--there were even tracks for entering difficult harbors. One thing to note, the marine charts for the Canadian shore of Lake Superior (the chip) are a bit off. The US charts for the GPS are perfect. The...

I bought the unit NEW from Amazon and received it on Jan 3 2009. The sound didn't work, so after dealing with Garmin's customer service I sent my 12V cord/speaker to Garmin waited three weeks and received a replacement. Still no sound. Garmin then...

This is the best Sea to Land to Road GPS I have found and certainly the best GPS I've ever owned (and I've had many). I seamlessly use the 478 on my Sailboat, Motorcycle and Car. The XM Weather feature is outstanding, which I use both on the boat and...

I chose the Garmin 478 chartplotter because I needed a portable unit for my truck and bayboat. Navagating though Louisiana coastal marshes with its maize of cuts and islands is quite challenging.Before going on the water, I made navagational waypoints...