iBooks on Route Planning: For Navionics, Garmin BlueChart, MaxSea, iSailor, Imray Navigator, Marine Imray Charts, NavLink, iBoating, and Aqua Maps.

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 MaxSea TimeZero as an iPad nav app navigating tool for

 Tidal Waters Route Planning.

The MaxSea TimeZero and Marine Tides Planner iPad navigation apps can be used to compensate for tidal currents and calculate '1 hour' waypoints.