With only one or two appearances there isn't much to say about this ship. The sizes come from the scale diagram on page 581 of the Encyclopedia (2nd edition), the background info is invented by me, and the story about Dukat naturally comes from "Return to Grace". The idea that the cargo containers are modular in nature is my own - the cargo units occupying the centre of the ship form a repeating pattern, and it just seemed like an obvious possibility. I doubt the front and rear sections of the ship are entirely separate - instead I imagine them being connected by some sort of relatively thin central spine, perhaps something that can telescope to a longer length to accommodate more cargo pods, but more likely something that each cargo pod has built in so they can just plug together. I would guess that this process would take a couple of hours.