Not to belabor the point, but when referring to the movies, please say something like "according to canon sources" or "according to the movies". In this case, they're the same thing. "Canon movies" is a bit redundant since there aren't any non-canon movies in Star Wars. I hope LeHah thinks I'm using it right.
Just a bit of fun semantics. Oh, and please keep in mind that there are differing levels of SW canon, which is really funny to me.
That's not quite right - there are actually movies that aren't considered "G-Level" canon. The Ewok Movies are one set that come to mind.
More importantly, there is one specific flim (or pieces of film) that has no level of canon in the Star Wars universe at all, but also happens to contain the first appearance of Boba Fett: The Star Wars Holiday special.
That being said, the attempts above to refer to "canon movies" was NOT an attempt to admit any of these things (that there are movies and film material that is not canon material) but rather an attempt to say that their post was 'righter' then everyone elses because it came from the
movies.
Regarding the Vindicator:
As LeHah has strongly implied, the Vindicator is a fan creation that was created in the Technical Commentaries* to explain one scene in Return of the Jedi that involves the Falcon flying along the dorsal shaft of a Star Destroyer that doesn't seem to fit with the other features we've seen on the base of a Star Destroyer before. To my knowledge, no official explanation has been offered explaining what model this was or where it came from.
Additionally, the above debate is factual incorrect - there are multiple types of Star Destroyers beyond the "ISD" and "SSD" show in the films. This is because a handful of Star Destroyer were given their own 'look' for the flim, meaning that they are all technically of the same class with some slight variations and modifications. (This is not counting, obviously, the Prequel trilogy ships.) This number actual doubles because some of these ships had the flim flipped to use footage of them AGAIN allegedly representing a different ship.
If you look at the highest level of
written canon authority: there is the Executor, a 'Super Star Destroyer' and an Imperial Star Destroyer in the writing. No other ship classes or types (such as that Vindicator dribble) are mentioned.
*The technical commentaries are the Star Wars equivalent of the Wing Commander Aces club. The author made up whatever he wanted to make things make scientific sense - so long as you were applying his science in his manner to ensure things worked properly, and they have found their way into unofficial sources (like Wookieepedia) where people now accept them as god speak despite their obvious contradictions to the films and novels. (Like the fact that Endor still exists.)