Draining New York: What Lies Beneath?

Channel 5, 9pm

Experts use the latest sonar technology to reveal the shipwrecks beneath Manhattan’s skyline in New York harbour, and how these vessels contributed to the city’s meteoric rise. As the water drains away, a feat of engineering is also unveiled, as well as a record-breaking icon and a casualty of First World War stealth warfare. ★★★★★