Draining the North Sea:..

Channel 5

Friday 10 September 2021  21:00 - 22:00 (60 mins)
...Submarines at War. Latest sonar technology uncovers hundreds of shipwrecks around the British Isle and reveals how the U-Boat almost won the war when it took on the British Royal Navy.[S]

Draining the North Sea:.. may be available on playback
Draining the North Sea:.. (Channel 5) Friday 10 September 2021 21:00 - 22:00