Missing Titanic sub: Estimated 40 hours of oxygen left on vessel as search ongoing

The U.S. Coast Guard says the crew aboard a missing submersible ship in the Atlantic Ocean only has roughly 40 hours of oxygen left. U.S. Coast Guard Capt. Jamie Frederick told reporters in Boston Tuesday that rescuers are working hard to find Titan, a OceanGate Expeditions submersible that was reported overdue on Sunday some 700 kilometers south of St. John’s, N.L.