Episode 1
Episode: 1x01 | Airdate: Apr 26, 2021
Research teams win special permission to investigate two wrecks from World War I lost in the Orkney islands, the warships HMS Hampshire and HMS Vanguard.
Season 1
Episode 2
Episode: 1x02 | Airdate: May 3, 2021
The story of two of the greatest failed invasions in naval warfare - the defeat of the Spanish Armada, and the catastrophe of the Dardanelles in 1915
Episode 3
Episode: 1x03 | Airdate: May 10, 2021
The stories behind two sunken ocean liners a century apart - the Empress of Ireland, which sank in heavy fog in 1914, and El Faro, which was struck by a tropical storm in 2015.
Episode 4
Episode: 1x04 | Airdate: May 17, 2021
Episode 5
Episode: 1x05 | Airdate: May 24, 2021
Episode 6
Episode: 1x06 | Airdate: Jul 1, 2021
Episode 7
Episode: 1x07 | Airdate: Jul 8, 2021
Episode 8
Episode: 1x08 | Airdate: Jul 15, 2021
Episode 9
Episode: 1x09 | Airdate: Jul 22, 2021
Episode 10
Episode: 1x10 | Airdate: Jul 29, 2021