A wreck hunter has said 'tapping' has been heard during the search for a missing Titanic submersible amid fears the chance of rescue is just one per cent.
David Mearns is a friend of billionaire Brit Hamish Harding - one of the five people onboard the vessel - and says he had seen reports of “tapping” being heard in the water.
Among the five people inside the 22ft long single windowed sub were three Britons; Harding, 58, British-based Pakistani businessman Shahzada Dawood, 48, and his son Sulaiman Dawood, 19.
