Ideal for boaters, fishermen and water sports enthusiasts of all kinds. Any downloaded chart data stays resident on your iPhone and is visible even when outside of wireless coverage! You can plan your on-the-water adventures, check tides, set your routes and markers, and search for marinas. Record your track, capture geo-tagged pictures, and create a virtual adventurelogue of your entire trip and then share it with your friends and family via email, Facebook, Twitter and the Navionics community. Join the UGC revolution and contribute to building the best localized data available. With a few simple steps, you can edit your charts to indicate local data like Rocks, Wrecks, Obstructions, Buoys, Beacons & Signs, Lights, Shops & Repairs, Ports & Marinas and Anchorages, Moorings and more. In sharing your UGC, a community of users will benefit and it is visible almost instantly! Learn more about Navionics Mobile: www.navionics.com and join us on Facebook or Twitter