There is a new tutorial on using vrtool "Firefox Cache Importer" (FCI) to
update winds and boat data without direct downloads from game server (off-line)
This method automatically locates and loads files from local browser folders.
http://www.tecepe.com.br/nav/vrtool/offline/tutorialFCI.htm
p.s. Some users reported that this is not working for them, for reasons I ignore.
For those, there is the Copy-Paste alternative. Check the links page for more
information on this.
http://www.tecepe.com.br/nav/vrtool/links.htm