We're starting to get the feeling that every engineer's life goal is to make something really fucking huge. All the jaw-dropping objects on this list are surely quite useful, and some of them might even need to be this gigantic to do their jobs. But we think that mainly somebody just wanted to see how big they could make them:

5 The Massive Ship That Carries Other Massive Ships

Freek van Arkel

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Here's a prime example: We suspect this giant ship that is carrying a bunch of other giant ships is the result of a drunken bet between millionaires who wanted to see just how many boats they could pile on top of each other without sinking them.

W.J.Hordijk/Vessel Tracker

Rich man's Jenga isn't for pussies.

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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.

U.S. Navy

It's a doomsday device.

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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: