OceanGate has been slammed after it took eight hours to report the missing Titanic submarine before a "catastrophic implosion" killed all five passengers on board.
The submarine, named Titan, departed at 6am on Sunday with five passengers on board but the vessel went missing 12,000ft below sea level 435 miles south of St John's, Newfoundland, Canada, after an hour and a half into the Titanic wreckage journey.
The time lag has yet to be explained by the company that owns the submersible but it may not have made any difference, according to the Coast Guard, who said the vessel imploded near the Titanic wreckage, killing all five men.
