This is the Sheerleg, a 3000-ton crane that snaps together "megablocks," or massive pieces of a ship that are assembled together LEGO-style. In the above time-lapse video, the giant crane places a 10-story megablock on a $750-million, 750-long, 137-foot-deep Samsung offshore drillship.

This entire operation took six hours, as well it should — the Sheerleg has only millimeters worth of error when snapping these megablocks together.

[GCaptain via The Scuttlefish]