Most of this entry is a straight description of what we've seen of this ship in the last few years. The figures in the specifications table are almost entirely my invention; the length comes form the scale diagram in the back of the Encyclopedia (2nd edition). That these ships are designed to land troops through a hatch comes from "The Ship", and indicates that the Attack Ship can enter planetary atmospheres and either land or hover above the ground. The "bigger numbers, weaker ship" syndrome, which I rant about in the comments section of the Dominion Battlecruiser, does actually make some sense here since Starfleet has had one of these ships to play with for a while and so has learned quite a bit about them.