The Normandy SR-2 is the main location of action in the Twitterverse. Not to be mistaken with the Normandy SR-1, Zach's Normandy or SR-X, the Normandy SR-2 is based on the ship from the second Mass Effect game as opposed to the first, but with a few alterations.
Unlike its canon counterpart, the SR-2 has several key differences. First of all, it seems to be capable of either carrying infinite fuel or making its own. The Twitterverse SR-2 seems to be able to house and carry any amount of people, possibly due to the addition of guest rooms as opposed to the one room in the game with about four beds and a table. It also has the nicest and largest mess hall known to mankind, as well as a gym and firing range.