The system's chart plotter mode operates conventionally, using cartography from one or two plug-in C-MAP NT cartridges. Full-scale display choices range from one-eighth of a mile to 4,000 nm. The system's reasonably fast processor provides sufficient track memory for storage of 10,000 points on each of five tracks. Track recording intervals range from one second to 60 minutes, and from 0.01 nm to five nm. Waypoint storage is equally impressive: 1,000 waypoints stored in five groups of 200 each. Route storage allows for as many as 50 routes, each with as many as 20 waypoints. Screen redraw is fast. Typical of C-MAP systems, access to specific data about navigational aids requires a number of inputs to select the appropriate dialog box and access the information. This is apparently the price you have to pay for keeping the basic information display clear and uncluttered.