Maptech's Offshore Navigator 2002 turns your Windows-based PC laptop into a chart plotter when used in conjunction with a GPS unit and Maptech Digital Charts. The software offers a new Spherical-Horizon View, which the manufacturer describes as "draping a paper chart over a beach ball," and provides the user with the important information for the area at hand, while also giving insight into what lies ahead. With a simple On-Water mode, Offshore Navigator guides the user with just essential information. Various icons put useful views - your planned route, course settings, the maximum-size chart for the screen and other information - just a single click away. Offshore Navigator 2002 sells for $199.95. Maptech, Amesbury, MA; (888) 839-5551; www.maptech.com.