Summary: Bought this to replace a 376c that stopped working. Garmin no longer makes or repairs these. All my mounts, maps and equipment are for this style of gps. This also has XM radio like the 376c did. This unit is used in my truck, boat and atv.
Summary: I purchased my first Garmin 478 in 2007. We took a cross country trip and three days into the trip my wife got very ill she was passed out and was throwing up blood on the highway in the middle of nowhere. I revived her got back in the truck search for a hospital and we were 15 miles away from a hospital if it hadn't been for the Garmin I would've probably turned around and went back to the town and we came from which was about 100 miles back.
Summary: The GPSMAP 478 GPS has all the features necessary for motorcycle tourers and rallyists. Combined with a Garmin X30 antenna, and weather service, the GPSMAP 478 combined excellent routing, XM Radio, and NEXRAD weather capability. Routing is easy, and detail maps for North America fit within its memory. It uses the latest map system, so map updates are available. Sadly, it is discontinued, so you'll probably pay list or more fro it used on eBay. But it is worth it.
Summary: This staff is great. I put onto my cruising bike, and went for long touring. The map is not very updated, but it is a great advantage to know where the rain would be. I could choose the different way to avoide wetty riding, or prepared before got wet. It's not touch screen type, but same as handy GPS which I used to use. and the visibility under heavy sunshine is perfet. And credibility for the vibration, weather is excellent. Of course, I enjoyed XM radio, too.
Summary: I use this GPS on a motorcycle and this is the best GPS I have found for that use. Because it's also made for marine use the GPS is waterproof and the screen doesn't wash out in the sun. The screen also has an excellent resolution. I like having buttons instead of a touch screen, especially when wearing gloves. I've owned a 276c and 376c. The 478 is nicer as it will hold a complete mapset without the need for memory sticks.
Summary: The GPSMAP 478 unit has both land and US coastal navigation on board. The screen is bright and easy to read with the aviation sun hood in place. It takes a bit of button pushing to operate it, but is not too bad once you master the process. The included non-slip auto mount works and the unit is waterproof. Excellent unit for my needs. If you want inland lake data, you will need the GPSMAP 378.
Summary: I think its good and will help you a lot with both of marine and land areas. software is easy to use screen qqait good but there is one problem the battry live is not enough for some situation.
Summary: I thought I did a thorough job of researching and picking out this unit for my boat and car. I don't use my boat that often or go where the channel is not marked. I thought this GPS unit would work like the Garmin unit I got for my wife's, car but that is not the case. You have to create the route using a lot of way points. If you use just your destination, you get a straight line route that could go over land and outside of the channel markers.
Summary: Have added a separate very detailed chart map of Lake Winnepesaukee in NH. Between using that and the automobile road maps I will never be lost again. VERY sharp and clear display. On the minus side it is fairly complicated to set up routes because so many features are available. practice will be needed but worth it.
Summary: Complicated and time consuming to learn and utilize most land and marine features. Lack of touch key pad make this GPS far more cumbersome to create a route than on newer, less expensive auto models. Garmin offers online support and downloadable updates; however, buyers would be wise to seriously consider units with a touch screen which are far more user friendly.