OpenPlotter has many excellent features that we explored in previous posts. Weather information is critical for sailors and OpenPlotter features a GRIB file viewer as well as the ability to overlay this information on OpenCPN. The weather information is contained in GRIB files that can be downloaded over an internet connection either from cable/wifi/ssb/satellite etc.
BlogPost:
https://jeremyclark.ca/wp/telecom/openplotter-grib-files/
Celestial Navigation Basics & Equipment:
https://www.clarktelecommunications.com/celnav.htm
