Actually, this is the MV Blue Marlin, a "heavy lift ship" with a deck as long as two football fields, designed to transport all sorts of enormous objects over water -- not just other ships but entire gas refineries and ... whatever the hell this is.
If you're still having trouble getting a sense of scale of this thing, let's look at it compared to a Navy warship. After the USS Cole was bombed in 2000, the hole in it made it unable to sail. The Marlin stepped in and was able to ship the whole destroyer back to the naval yard for repairs, and it looked like it had room to carry two more of them:
NHHC Photograph Collection
They removed the giant red pegs first to make it easier to load.