Maptech's U.S. Boating Charts with Tides and Currents is an economically priced software and electronic chart product for use on PCs and laptops. U.S. Boating Charts with Tides and Currents includes detailed Raster NOAA Charts of the entire U.S. Coast and Army Corps of Engineers' Inland Waterway Charts. Powered by Maptech's Offshore Navigator Lite, which provides the tools for route planning and navigating in real time, plus tide and current information for U.S. waters. U.S. Boating Charts With Tides and Currents can be interfaced with NMEA 0183 GPS.PC Minimum requirements for Offshore Navigator Lite: Windows 2000, NT, XP, Vista 7, 8, or 10; DVD Drive, 120MB of RAM; 256 color, 800x600 display; One GB of hard disc space; mouse or drawing equivalent.GPS connection requires: industry-standard NMEA 0183 GPS; connection cable; one available COM port.Note: A GPS is not required to run Offshore Navigator Lite. BSB Chart Format: Digital Charts supplied are in the Maptech BSB4 file format. The Offshore Navigator Lite software included is BB4 compatible. If you intend to use the included charts with another navigation program, please confirm with the manufacturer that it is BSB4 compatible.