Thorny Path Puerto Plata, Dominican Republic to the Virgin Islands Maptech has worldwide coverage for digital navigation. Maptech raster scans charts produced by government and private charting agencies. The result is faithful replicas of charts from around the world. Charts come bundled on CD-ROMS in regional groupings of 1-80 charts. For Windows 95/98/NT users, we've also included a free chart viewer on every CD. Maptech offers over 3,000 charts covering international waters. From the English Channel to the Mediterranean, from Panama to Grand Bahamas to Asia and the Pacific, Maptech helps navigators find their way.