Missing Titanic submersible 'less sophisticated,' David Pogue recalls | USA TODAY

CBS News Sunday Morning correspondent David Pogue recalls his trip inside the now-missing OceanGate submersible.
RELATED: Search underway for missing submersible used to see Titanic wreckage tinyurl.com/4f...
As U.S. and Canadian crews continued to search Wednesday for a missing submersible that may have only a day's supply of oxygen left, more information was emerging about experts' attempts to warn the company that owns the underwater vessel about the perils of its operations.
The 22-foot submersible was carrying five people in a dive to the wreckage site of the Titanic when it lost contact with a support ship Sunday. Among those aboard are a British adventurer, two members of a Pakistani business family, a Titanic expert and the CEO of OceanGate, the privately owned, Washington-based company that operates the vessel.
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