Just started playing today and I named my little Light Cruiser U.S.S Brightstar, this was the name of a Character I had in CoH and thought it would actually work as the name of a Starship, also If some of my SG mates join me here from there then it will be easy to recognize me.
My current ship name (in sig) was chosen because I've always gravitaed toward that word since Revell used it for one of their "Robotech Defenders" model line. It was also used in City of Heroes MMO for a historical character that had a big role in the game's history. Regardless, getting the Constitution II was my chance to use it I kept the default Registry number because ... why not?
My main ship is called the USS Horizon, simply because I liked the name.
My Gorn ship is called Ventus 1, it's a made up word, but I wanted something I liked the sound of. I added the 1 at the end, because of Boba Fett's ship, Slave 1. I think it sounded cool. It also mean't that I could call the next ship Ventus 2 and avoid the problem the feds have of not being able to have two ships with the same name when you progress from A to B, etc.