There’s no doubt that the iPad was a cool invention, but if you’re a mariner, you have to love it twice as much now that Navionics has stepped up with its iPad app. High-definition charts and easy-to-use navigational features make this as compelling as a fancy chart plotter at a fraction of the cost. Easy to carry from home to boat, it’s a perfect planning tool. And — full disclosure — you can download relevant features from Yachting and other marine titles with a tap on the glass as you and your crew approach the next harbor.