| Introduction |
∙ Raster – | A paper chart that has been scanned into |
| a high resolution image. A raster chart |
| has the advantage of being virtually |
| identical to the original paper chart from |
| which it was scanned. The MapTech |
| NOAA/BSB and PCX charts are |
| examples of raster charts. |
∙Aerial Imagery – A high resolution,
Comprehensive Weather/Oceanographic Reporting
Navigator offers you the capability to download and display the latest weather and ocean conditions, and then superimpose this information upon your charts in several layers. Weather and oceanographic (sea tides and currents) files (in GRIB format) can be downloaded directly from the internet or requested via email. After you have acquired your files, you can fully animate them to show the predicted weather and ocean currents over a specified period of time. Typical weather files contain information in 6, 12, and 24 hour intervals, covering a period of several days. Navigator can further break this information down into intervals as small as 30 minutes, giving you a comprehensive presentation of atmospheric and marine conditions.