Boatbuilders today typically frame a vessel first, then add the hull's planking. The Khufu boat was shell-built, meaning the outer skin of planks came first, then the interior timbers and framing. The workmanship is exceptional. The pharaoh's craftsmen shaped the ship's 30 hull planks from logs as long as 76 feet. They also sculpted the planks to follow the shape of the hull, and they joggled them along the edges, meaning they carved them in such a way that they lock together like puzzle pieces.