National Geographic: Uncovering the Secrets of New York City- Drain the Oceans

As part of the Drain the Ocean series, National Geographic uncovers shipwrecks right in downtown New York City. Using the latest sonar technology, this documentary covers secrets of the past right beneath Manhattan's skyline, including a shipwreck at Ground Zero found when excavating the site. Come learn about this, the feat of engineering, and a record-breaking icon and casualty of World War I stealth warfare by viewing this dynamic documentary.