The head of the missing Titanic search has admitted there's still hope the submarine can be found but revealed the "banging" noises heard were probably just “background ocean noise”.
Rear Admiral John Mauger, from the US Coast Guard, has said the operation to find a missing submersible is "still an active search and rescue", but the initial attempt to locate the submarine “yielded negative results” after the Canadian P-3 aircraft picked up the sound on Tuesday evening and Wednesday.
The noise was being detected every thirty minutes and then four hours later after additional sonar devices were sent to try and track where the sound was coming from.
