This is a ship from The Player of Games, a novel by Iain M. Banks. Its full name is Murderer-class General Offensive Unit (D)GOU Limiting Factor. This is the second ship for the Player of Games illustration series after the previous superlifter. Next one will be a big chunk: Plate-class General System Vehicle Little Rascal (50 kilometers long).
(D)GOU means demilitarized general offensive unit, a former warship. The Limiting Factor is on a Special Circumstances mission, in the Azhad Empire. One of the Culture is that spaceships are also characters, hosts of minds. Minds are artificial sentient beings.
good enough for now
almost
maybe
nope