US Navy detected implosion sounds during Titanic sub search.

The US Navy detected sounds "consistent with an implosion" shortly after OceanGate's Titan submersible lost contact during a dive to the Titanic wreck on Sunday. The loss of the sub was confirmed on Thursday after a huge search mission. All five people aboard Titan had been killed following what was probably a "catastrophic implosion", based on patterns of debris discovered. Efforts are continuing to map the debris field and to search the sea floor around the Titanic.