What to know about the Titan submersible testimony and who’s next The Washington PostWatch: Coast Guard releases new footage of Titan submersible after implosion CNNOceanGate’s ill-fated Titan sub relied on a hand-typed Excel spreadsheet The Verge’Titan’ Passenger Says Anyone Who ‘Felt Safe’ Diving in Submersible Was ‘Delusional’: ‘Wasn’t Supposed to Be’ PEOPLETitan sub co-founder says cause of disaster that killed 5 may never be known USA TODAY