I have Bluechart Mobile on my
Ipad. With excellent
WiFi connection, I have attempted to display any of the GRIB file
forecast data (wind, wave etc). The only result is my
screen turns black and the video progress bar appears, but won't progress when I press the play button. How I did it: view my area of interest on the map. Lower-right corner, press the map button, press
Forecast, select GRIB, select Winds (or Wave Direction, Wave Period, Surface Pressure, Wave Height).