Tier1: U.S.S. Arturia. An hommage to the anime Fate/Stay Night, featuring King Arthur as a girl.
Tier2: U.S.S. Treveris-A. The latin name of the city where I go to college, Trier in Germany, and the A because I felt like it.
I seem to have a faible for latin names, so maybe I'm gonna name my next ship Marcus Aurelius after the roman emperor and because the owner of a pizzeria where I used to live always called me by that name. ^^