The CEO of OceanGate, who died alongside four other passengers during a voyage to the Titanic wreck, allegedly ignored repeated warnings regarding the safety of the submersible.
Stockton Rush dismissed concerns raised by leading specialist Rob McCallum who warned the Titan sub was a risk until it had been classified by an independent body.
In an email seen by the BBC, McCallum, a consultant for OceanGate when the company started in 2009, warned Rush that he could be placing clients in a 'dangerous dynamic'.
