The best we had wasn't too satisfactory. We needed to spend a lot more time describing it between renditions than we did.
The rendition of the Flying Castle Habitat by itself came close. It looked rather like a sleek flying saucer, with a gridded, transparent dome.
The Thrust Ring hosted over six hundred Shuttle/Thrusters, each with two Gas-Cooled Nuclear Reactor/Rocket Engines. Thrust from each shuttle was well over a million pounds.
600 million pounds of thrust....isn't that a little under powered for towing asteroids?
Yeah... but do you have a link to the graphic? Maybe give rottndog an glimmer of a glimpse of an idea?