Navionics Mobile v4.0 (www.navionics.com) is a charting program that works on app-enabled mobile devices—including the iPhone, iPad, iPod Touch, and Android smartphones. While they're not necessarily quite ready for full-on navigation, they're definitely interesting from the perspective of the immense amounts of available data, where it lives, and how simple it is to keep up to date. They are powerful backup devices as they stand now—they can record tracks and routes, access the Navionics database of points of interest—an immense resource for the marina resources alone, and check tides and currents. As these devices get more powerful, we would not be surprised to see route planning and other functions automatically uploaded to the helm array as the user steps aboard in cloud-computing fashion. Stay tuned.