Titanic tourist submarine 'may be stuck in ship's wreckage 12,500ft below Atlantic': Cold War sonar plane and second sub deployed in race against time hunt for vessel that has 60 hours of air left and has been missing for more than 24 hours.
The missing tourist submersible with five people onboard including British billionaire Hamish Harding has been missing since Sunday afternoon, and may have become stuck in the wreckage of the Titanic that it was diving to admire.
The sub, owned and operated by OceanGate Expeditions, was taking a crew of five people - including company CEO Stockton Rush, French explorer PH Nargeolet and Harding - 12,500ft underwater as part of its $250,000-a-head Titanic tour.
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