HOLY CRAP!in comparison the NU-E if it is at the 700 m range is insanely HUGE! WERE talking BABYLON 5 & STAR WARS HUGE!
Ships have been that large in Trek for a long time -- like the first TOS production episode.
The Romulan warbird in TNG and DS9 is over 1300 m. The Dominion dreadnaught is about 1500 m. The big Kazon ship is about 1800 m. The Voth city ship is over 9000 m. Borg cubes are about 3000 m. The Varro cruiser was 19 km. There are more examples, but you get the point.
Those sizes are comparable with some SW ships, yes, but B5 routinely had stupidly big ships a few km long.