Program to download and view Grib file weather forecasts. These are freely available on the internet and are highly compressed so can easily be downloaded over slow internet links. Will also generate emails to download custom area forecasts from Saildocs.com The program includes utilities to decompress and join grib files and to extract specific areas from large files. Passage plans can also be set up and displayed on the forecasts, showing the expected boat position at the time of the forecast.