Rescue teams detected bizarre banging sounds from the wrecked Titan submarine. The mysterious knocking sounds heard for the first time beneath the Atlantic Ocean gave hope of life to the families of those trapped inside the doomed Titan submersible.
Banging noise from doomed Titanic sub every 30 minutes led to survivor mystery dailystar.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from dailystar.co.uk Daily Mail and Mail on Sunday newspapers.
Experts have revealed for the first time the theories surrounding the notorious banging noises heard by rescuers hunting for the doomed Titan submersible.