1. Queen Elizabeth's Lost Guns

A mile off the coast of Alderney in the Channel Islands lies a 16th-century shipwreck that could rewrite England's naval history. Here, Saul David joins a team of divers and experts as they try to raise the ship's timeworn cannons. By recasting and firing one of them, the team hopes to provide an insight into how Elizabeth I became the mother of British naval dominance. NEW SEASON 1/7.