True that ships are not propelled by the weather. However I was commenting on Timo's "The thing is, though, the environment never seems to play any role in starship propulsion. Our heroes never discuss "winds" of any sort, or subspace density, or even gravity..." which isn't true.
In the movie generations, when the magnetic fields in a section space changed suddenly, a starship was compelled to make a slight course change.
It somehow effected how the ship was getting to where it was going.