3-D Radar. Dubbed the "most highly advertised, least-used feature" currently on the marine-electronics market, 3-D radar offers a fantastic perspective on your surroundings. While the marketing name is a misnomer (actual "3-D radar" doesn't exist), several manufacturers incorporate a graphics-overlay application that blends satellite photos and charts into a multidimensional image, much like the "Street View" function on Google Earth. "3-D radar is a perspective view of the radar picture," said Peter Prowant, Furuno's Southeast regional manager. "It's like a heads-up display. Buoys and vessels appear to float on the surface level." Interestingly, how each manufacturer presents this view differs substantially. For example, Furuno's NavNet 3D offers a full-time 3-D perspective, whereas Simrad and B&G use TurboView technology that allows a user to choose between a 2- or 3-D perspective.