The vessel, named Titan, lost communication with tour operators on Sunday while about 435 miles south of St John's, Newfoundland, during a voyage to the Titanic off the coast of Canada. The last 'ping' of its homing device was heard on Sunday afternoon - directly above the world's most famous seawreck. Those stuck onboard, dubbed the Titan Five, includes British billionaire Hamish Harding, OceanGate CEO Stockton Rush, French navy veteran PH Nargeolet and Pakistani businessman Shahzada Dawood and his son Suleman . As of Wednesday afternoon it was said that just 20 hours of oxygen remained in the vessel, meaning it would run out at some point on Thursday morning. Experts have said those inside will be trying to minimise their breathing to preserve the remaining supplies. Above the Titanic is a flotilla of ships and aircraft scanning the Atlantic for any sign of Titan as sonar continues to hear a banging noise from the depths. But the Coastguard has admitted it does not know if it is the five men hammering on the side of their sub or simply the sound of the sea including perhaps debris falling from the Titanic itself at 12,500ft below the surface. A countdown has now begun with the vital oxygen supply expected to run out at 7.08am US eastern time (12.08pm GMT, 9.08pm Sydney), a US Coast Guard spokeswoman has said.
Oxygen on the missing Titanic submersible is expected to run out by the end of this morning with a 'miracle' now needed to find it in time as banging every 30 minutes is still being heard from the depths.
Rescue efforts to find the five people on board have continued overnight - and are becoming ever more desperate - with just hours to pinpoint 'banging' from the deep and save them. Ten ships and at least two remote subs are actively searching with more on the way today.
The vessel, named Titan, lost communication with tour operators on Sunday while about 435 miles south of St John's, Newfoundland, during a voyage to the Titanic off the coast of Canada. The last 'ping' of its homing device was heard on Sunday afternoon - directly above the world's most famous seawreck.
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