As you progress along a passage, you will be downloading new weather forecasts and updating your weather routing solution. There are a few ways of working with the system to accomplish this.
The workflow that is encouraged is to follow this order:
When you follow this workflow, the position report you create will help in the proccess of updating the GRIB request region, giving you the context of where you are, as well as being used by the weather routing system as the start point and time for the weather route generated.
LuckGrib Weather Routing is currently only available on macOS. Support for iOS and iPadOS is under development.