Um, clai, I think you need to go look at the essential guide to vehicles again. Turn to page 80 where you will see a so called "imperial class stardestroyer". THIS is the one with the antanae on top. It's labeled as a communication tower. Victoy class is on page 188 and looks EXACTLY like the ones in the film. but as I and Ush and otheers have pointed out, none that other stuff matters. There is one class of star destroyer in the films: star destroyers. Leia and Han and others put "Imperial" in front of it because they're saying they're part of the Empire, not what class they are. The Prequel era versions are not yet called star destroyers so they are neither class, even if the classes counted.
By the way with the different classes of Star Destroyers, Lucas film has now acknowleged these following Star Destroyers as officail ship, regardless of movie appearences or not: Victory I, Victory II, Imperial I(EP IV Ships), Imperial II(EP V and VI), Super(EP V & VI), Eclipse I(Dark Empire comic), Eclipse II(Dark Empire II Comic), and the Defender-class(Never seen it, but it was listed as "Smaller than the Imperial-class Ships, but just as powerful" ships built and used by the new republic. All of this information comes from both the New Essential Guide to Vehicles and Vessels as well as the Starwars.com databank.
I didn't mean that, I just got the impression that you didn't recognize them at all in the SW universe, besides, the VSD is only mentioned at SW.com. I was just stating that there is a difference between the ships. I also wanted to point out that The VSD is NOT in EP III, but I think you already noted that. A new SD will be in EP III
Victoy class is on page 188 and looks EXACTLY like the ones in the film.
No they don't. I've seen many pics of the Victory-class, they're nothing alike.
And just to confirm, the -class designation of these ones will be Venator-class, like the Republic assault ships from Episode II were called Acclamator-class by the EU. They're not called "cruiser" in Episode II, at least, not by the databank, which always seems to use the informal film names for film ships, even though they have a more technical designation.
By the way with the different classes of Star Destroyers, Lucas film has now acknowleged these following Star Destroyers as officail ship, regardless of movie appearences or not: Victory I, Victory II, Imperial I(EP IV Ships), Imperial II(EP V and VI)
That isn't strictly true- in ANH, the model for the Star Destroyer was actually really small (smaller than the Blockade Runner, surprisingly), so when Episode V came around, they made a *much* bigger one (about 250cm long)- but they didn't stop using the ANH model. They just changed it's antenna on the tower so it looked like the bigger model. You can spot which model it is by looking at the engines- the big one has 'rings' on it's engines, while the small one has three square protrusions. But both are used in Episove IV and V (and probably VI too, but I'm not sure).
So that's why they made up the Imperial I and II designations, though the way the films use them, they're obviously meant to be the same ship- you can see that in Episode V, when the ion cannon fires- you see the Star Destroyer closing in, and since you can see it's engines, its obvious its the original ANH model- then they hit it with the ion cannon, the transport and X-Wings go past ... and it's the bigger model all of a sudden, with different engines 🙂
As for Lucas never referring to class, that's not strictly true- the Imperial officer who tells Vader a ship is approaching says "X-Wing-class".
Though for the record I think "Imperial-class" is damn stupid.