Chilling new video shows the moment the doomed Oceangate underwater craft began its perilous descent to the wreck of the Titanic.
Rescue workers are continued the hunt for the missing 'Titan' submersible on Thursday morning, with the oxygen supply on board expected to run out at 12.08pm today, according to a US Coast Guard spokesperson.
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 shipwreck off the coast of Canada.
