Summary: I love this GPS-Sounder. I bought it from epal.com on sale with a free in hull mount transducer. It has all the features even the professional Captains need. The only negative is it uses magnets to hold the sim card door closed, so you cannot mount it within 32 inches of your compass.(Read installation guide) I don't use my compass now, why would I need it with a GPS, but the magnets do cause true north reading errors. Garmin has out done themselves with this one.
Summary: I would like to respond to some confusion created in other reviews. The 740s has excellent built in maps useful for navigation. These internal maps can be transferred to an SD card for use at home with your computer with Homeport software. You do not have to transfer the map every time, but you DO have to have the SD card plugged into your computer to use Homeport. IN ADDITION to the built in maps, one may purchase cards with more detail and more features.
Summary: Well above what I have been using for navigation. I love the adaptability to update and add items like radar, sonar, ais and more detailed charts. The size of the screen is small enough to not dominate my dash and yet large enough for me to see without my glasses. well lit screen. You can split screens or overlay radar over the nav chart, so you don't need to split screens between chart and radar!
Very cute and tekky, but their maps are not very functional
steve in arkansas, Amazon
1 November 2012
Summary: I fish the marshes of south Louisiana. I purchased their map chip for this area for detailed maps because the navigating the cuts and bayous is critical. What I discovered is that the map overlays for a given area are so DARK that they are virtually useless. Who in the world designed this feature? It is obvious that some tech dude, who's never been outdoors, developed these screens indoors with no outside light.
There's really, really good and really, really bad...
9 May 2012
Summary: Love the device. But, if you plan to try to use the built-in or puchased charts with HomePort software be prepared to be frustrated and unhappy. You'll hate Garmin's clunky software and there's a pretty good chance that you're going to damage your downloaded charts as you learn to use the HomePort interface. When it comes to software Garmin makes protection of their revenue stream a priority over usabilty.
Summary: I investigated this unit thoroly before I bought it. All reviews were very positive. So far, I have installed it and networked it (NMEA 0183) to my Simrad AP25 Autopilot and my Furuno 582 depthsounder. It is working very well but I am still learning to use it. I am impressed by its ease of use and think it will be a real asset to my fishing and cruising.