I pity my brother...

[Adrian Laguna]

Actually, you need three to do it in an hour. A single ISD can do it in less than a day, though we don't know how much less.

[Surlethe]

Actually, you need three to do it in an hour. A single ISD can do it in less than a day, though we don't know how much less.

I'm fairly certain a single destroyer has the ability to do it in several hours, at most; the three destroyer figure, IIRC, is to encircle the planet and prevent escape or evacuation.

Here's the SWTC page on BDZ.