Rescuers searching for a missing submersible near the wreck of the Titanic on Wednesday concentrated their efforts on a remote area of the North Atlantic where a series of undersea noises have been detected, though officials cautioned the sounds may not have originated from the vessel.
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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.