Sinking of the “Titan”: a recording of noises heard during research revealed for the first time. Noises heard by Canadian rescuers allows us to hear “thumping” noises that had been reported by rescuers during their search for the ‘Titanic’ exploration ship.

The recording, which has never been made public, was given to the documentary's producers by a Canadian air force team that led the submersible's search and rescue mission.