The U.S.S. Icarus (test registry 'X-1') was used to test hyperwarp propulsion in the 2260s. The prototype vessel consisted of a saucer-shaped primary hull three to five decks high and two cylindrical, tapered warp engines attached at either side of the saucer. On it's maiden test flight, it disappeared in the Gamma Canaris region when it accelerated to 2,200 times light speed, which at that time was warp factor 13. It was rediscovered almost 200 years later, crashed on the surface of a planet on the other side of the galaxy. Although Starfleet are still piecing together what they can from the damaged logs, there may be sufficient evidence to suggest travel into several alternate universes or parallel realities...*UPDATE* I've changed the top of the bridge dome slightly to fit in better with the interior layout of the ship, which I'll be releasing soon.