The U.S. coast guard says a Canadian aircraft has detected underwater noises while scanning the North Atlantic for the tourist submersible lost during an expedition to the Titanic wreck. It comes as experts say the vessel may have little more than a day's worth of oxygen left, with time running out for a rescue attempt.
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Titanic Submersible
Crews have found the wreckage of a submersible that vanished on an expedition to the wreck of the Titanic, with all five onboard killed.