Re: Uss achilles from Voyager Fleet??
Exactly. If memory serves, CotS states in the Appendice somewhere that Achilles was just over 900 meters or so... if I recall correctly. With a Vesta about the same length as a Sovereign, the Achilles would need to be over 1500 meters if it could not only fit in a Vesta, but also house crew and equipment needed to service and repair a ship. Not to mention everything needed just to operate and maintain the Achilles herself, like warpdrive, fusion reactors, crewquarters, stuff like that....
It wasn't in either of the appendices but it may've been in the text. You're right though, there's no way it was that long.
Underachievement - Because soaring with the eagles requires so much more effort.