New York Harbor and its rivers have swallowed centuries of wrecks, and this episode uses CGI water removal alongside diver footage and historian interviews to put them back on dry land. The technique strips away the Hudson and East Rivers to expose sunken ferries, scuttled ships, and debris fields that trace the city's rise from a Dutch trading post to a global port. Archaeologists and maritime historians walk through what specific wrecks reveal about New York's growth, from colonial-era shipping to the engineering that let the city build outward into the water itself. Along the way the film ties submerged wreckage to specific turning points in the city's economic history, using the drained seabed as a kind of physical timeline. It is part of the long-running Drain the Oceans series, which applies the same visualization approach to different bodies of water each episode, and this installment keeps its focus tightly on how New York's underwater debris explains its rise to a major port city.