Here are the passages, parts where the ships are described highlighted:
The passageway made a sudden turn, and they came to a partially demolished wall. Auben stepped over the stones and jumped into a chamber a little larger than the one they left."There's a whole system of passageways that were once hidden," she explained. "I guess the big monks used to spy on the rest."
That sounded like standard Sith procedure to Anakin. Trust was not part of Sith doctrine. It seemed to Anakin to be a bleak way to live.
Auben led them down a bigger hallway. They went steadily downward, deeper and deeper into the complex. The walls began to weep with moisture. Anakin guessed they were now in the part of the monastery buried in the mountain.
They went through so many twists and turns that Anakin wondered if they'd have to use tracking devices to get out again. Even with his Jedi memory skills, he was beginning to feel disoriented.
At last, Auben paused. "What I'm about to show you isn't visible from above." She pushed open a rotted door.
Anakin followed. An ancient ship stood in the middle of a large space. He had never seen anything like it. Crude and clunky, it must have been state-of-the-art at one time. The afterburner tanks were huge.
"This was probably from before the sublight engine was perfected," Anakin said, half to himself. Under normal circumstances, he would love to investigate the ancient technology of the ship.
Around it, various decaying parts of what looked like droids were littered, models so old he couldn't identify them. He saw sheets and shards of durasteel and other metals on the floor and realized they had once been servodrivers, valves, and pumps, the hoses long decayed.
"It's a service bay," he said. "We must be near a landing hangar."
"You got it," Auben said. "Look."
She led them through the open arch, into the darkness. Anakin stepped out and released a breath. The hangar was so vast, it ended in darkness. Service bay after service bay ran down each side of the hangar, waiting to repair the ships that no longer arrived. Hulking wrecks of ships still littered the floor, bits of metal that had once been droids, decayed tanks. Huge statues of terrifying creatures from many worlds marched on either side down the hangar. The statues had crumbled and cracked over the years. Some were headless, and the huge heads had fallen and crumbled into blocks of stone.
"Keep your focus loose," Obi-Wan warned him in a low tone. "He will come from anywhere when he comes."First of all we are dealing with a large landing hangar lined with service bays in which to repair and refuel ships, presumably something like this:"This time I'll be prepared."
"Don't be so confident," Obi-Wan answered. "You probably won't be."
They were nearing the end of the hangar. He sensed it rather than saw it. The corroded vehicles were more numerous now, lined up like dark, giant phantoms.
Like phantoms..
Phantoms that move...
Obi-Wan wrenched his gaze away. He could have sworn the ancient ships were moving.
Then he knew.
"This way!" he yelled, as the first vehicle suddenly flipped over. It would have crushed them if Obi-Wan hadn't dashed to the side with Anakin on his heels. He flattened himself against the wall as another vehicle moved, its jagged wing a lethal weapon, capable of slicing them to ribbons. A cruiser suddenly zoomed toward the wall, straight at them.
"Drop!" Anakin and Obi-Wan hit the floor, hugging the stones as the cruiser passed over them and smashed into the wall.
Vehicle parts began to fall like rain. The crashes were deafening. They leaped, twisted, and dived to avoid them, using the Force to deflect them when they could. Finally they came to rest in the shadow of one of the giant statues. Obi-Wan leaned against a clawed foot and squinted into the darkness.
He could not see the Sith, but he felt the Sith's amusement, his triumph.
The vehicles now smashed into one another, creating a solid mass of screaming metal, effectively blocking them from the front of the hangar.
Anakin ran to the mountain of metal and tried to climb over it. Obi-Wan felt the dark side rise in a crest and then fall, leaving a vacuum behind.
"It's no use," he told Anakin. "The Sith is gone."
Not necessarily in size but certainly in design.
More to the point it is likely to be something uniform, it beggars both reason and belief that we would be dealing with a hangar designed to service both capital ships hundreds of meters in size, and vessels less than of that. Obviously they'd have separate hangars, with one hangar servicing similar sized ships.
Point being, the sizes of the ships in this hangar are unlikely to vary by much, the size of one ship is likely to be similar to the size of the rest.
So with that in mind I'll go over again why I believe the vessel(s) in question to be Sith escort gunships:
http://starwars.wikia.com/wiki/Sith_escort_gunship
And/or vessels of similar size and purpose.
1. One of the ships is described as having "huge" "afterburner tanks". Simply by looking at that image you can see it has big fat engines. More to the point afterburners are for jet engines, and jet engines are, in RL, for vessels typically travelling at supersonic speeds i.e. fighter aircraft. As an attack gunship this certainly fits that criteria, a massive, slow-moving capital ship does not.
2. One of the ships is described as having a "jagged wing", again, you can see the above ship has just that. The larger capital ships of the Sith Empire did not.
So we have two different ships bearing features that can be tied to this vessel, and this vessel alone, in terms of known Sith warships. And again I refer back to the logic that the hangar is likely designed to service vessels of a similar size, not ones varying widely in dimensions.
Now what is the evidence we are dealing with 200+ capital ships.
They are described as big, or rather "huge" "hulking" "giant" - except the above vessel I listed, though not as large, remains 75 meters in length. Or rather more than twice as big as the Millenium Falcon. Which is already pretty ****ing big:
Anything twice that length qualifies as "huge" "hulking" "giant" in every way. On the other hand they are not quite so big that the characters can't get a full sense of it from a single perspective, in a dark space no less. But besides that no, there is no proof we are dealing with capital ships of the aforementioned size, but rather vessels in the sub 100m range.
