When a ship is constructed now-a-days it is begun, after the blocks components are cut and assembled from steel that is, by lowering and welding together the large blocks in a drydock. When the ship is watertight and seaworthy, they flood the drydock. With the assistance of tugs, she makes her way out of the drydock and docks at the fitting-out dock/pier.
This event occurred last moth in Italy with the Nieuw Amsterdam. The new Holland America vessel is currently being fitted out in Fincantieri yards in Marghera, Italy.