Opphaler. According to Google Translate, it's Norwegian for "Hauler"
Could just call it "Bob" however. Nice, Simple, gets job done.

Man, the Nameless is such a cool name for a ship, though. Maybe we could have one in-lore as some kind of hero ship?
As for class names,
Hakobu
Rifuta
Morigana
Aliana
Kamotsu
Unso
Takiko
Arixis
"Nameless" sounds more like a name that goes to a mysterious and powerful warrior who's actions have inspired fear...That should be saved for a extremely powerful ship.
Random idea for a cruiser class ship called that: Low armor and hull but fast and maneuverable with a narrow but tough shield. Narrow profile with no rear defense and limited broadside defense. 2 hidden large weapon hardpoints that are tailor-made purely for the ship. Only 3-5 small ballistic mounts, intended for defense. Low flux capacity and vent points, but with a active system that vents flux rapidly when used. Dark coloring with nothing to make it stand out except that there is
nothing to make it stand out.
Basically a quiet harmless looking cruiser who, if you let your guard down, will kill you before you realize something is wrong.
Think this plane for design.
http://www.desktopas.com/files/2012/11/18/lockheed-sr-71-blackbird-1920x1200.jpg
Example lore
Spoiler
A terrifying relic of ancient times. Next to nothing is known about this strange cruiser sized vessel. What little the Domain managed to learn of this strange vessel of almost humanlike design seemed to terrify them even more. It's shape is barely known, it never comes up on even the most powerful of scanners. The only thing that the Domain of Man managed to learn was it's name, which has since been lost. It now goes by many names, but it is most commonly known as "The Nameless Hunter", on account that it only hunts the most powerful of prey.