Massive cruise ships are not built "in the water" in the traditional sense, but rather in specialized dry docks or on massive land-based slipways. A dry dock is a giant concrete basin that can be sealed off from the ocean and pumped dry, allowing engineers to construct the ship's hull on a solid, dry floor. This is essential for the precision welding of the giant steel "blocks" that make up the vessel. Once the hull is structurally sound and watertight, the dock is "flooded" by opening the sea gates, allowing the ship to float for the first time—a milestone known as the "float-out." In 2026, many of the world's largest ships are built in "covered" dry docks, such as the Meyer Werft shipyard in Germany, to protect the high-tech interior outfitting from the weather. After the float-out, the ship is towed to an "outfitting pier" where the finishing touches, like the luxury cabins and waterparks, are completed while the ship is technically in the water, but the core structural birth always happens on dry land to ensure the integrity of the lower decks and the propulsion systems.