Leviathan is a horror comic series created by Ian Edginton and D'Israeli, which appeared in the British magazine 2000 AD starting in 2003.
The story is set on a mile-long ocean liner (the Leviathan of the title) which has been transported to some sort of parallel world with no land or landmarks.
Lament has barely begun his investigation before it is curtailed and ship's security arrest a member of staff who was caught stealing supplies—food being in short order—believing him to be the murderer.
Later McLean approaches Lament and again asks for his help, suspecting that the steward was correct and unnatural forces are at work—the engine room has been off limits for 5 years and, despite having lights, heat and power, "the Leviathan should have run out of fuel decades ago".
Hastur keeps his word, and after healing Lament removes Leviathan from the alien world and drops it almost on top of New York, where it crashes into the docks, dwarfing the city outline.