Thanks for the tip, Ulco. I'm a bit afraid to change anything about the ship's position or rotation, because the wake and everything is exactly adjusted to the actual animation.
Anyway at the moment I'm still testing the sails animation. I'm not quite sure yet, why it didn't work yet. I now copied the power fractal and the transform shader out of the original file I used for the NWDA animation. Hopefully this will work.