Experts fear the five people on board the missing Titanic research vessel won't be found alive.
They say that the oxygen will run out onboard by 12.08pm today. Additional help has been sent to find the missing Titan submersible but so far, it has not been found.
The vessel lost communication with tour operators on Sunday while about 435 miles south of St John's, Newfoundland, during a voyage to the Titanic shipwreck off the coast of Canada. As of Wednesday afternoon, it was thought just 20 hours of oxygen remained.
