Perhaps most important, though, is the way 3-D makes chart and overlay data more naturally correlate with what you’re actually seeing from your helm as you move through the water, so that it’s easier to make the correct connections. However, it’s fairly freaky how different 3-D is from the conventional 2-D view, and I know numerous boaters who’ve tried it just once, at a dock. That’s a mistake, because 3-D really shines when under way, while 2-D does remain the sensible mode in which to plan a voyage when tied up. A north-up, top-down view lets you look around a chart without losing overall orientation, and no one particular spot needs your bird’s-eye focus until you’re moving. In practice, creating a route over a traditional chart view, and then running it in 3-D, can go together like lobster and butter. That’s why adjusting a route in 2-D but driving it in 3-D is standard operating procedure when it comes to electronic automobile navigation. It’s just that when you climb into your car, you don’t have to overcome centuries of powerful tradition to look at a 3-D map.