The New Republic has revealed OceanGate faced a lawsuit in 2018, after an employee claimed they were fired for raising concerns about the depths its submersible could safely travel to.
Court documents obtained by the US-based magazine revealed OceanGate employee David Lochridge - then the company's director of marine operations - filed a counterclaim against them for alleged wrongful termination. He was also sued by the company for disclosing confidential information about the Titan.
In his counterclaim, Mr Lochridge alleged he initially told OceanGate's executive management team about his safety concerns, which included "potential danger to passengers of the Titan as the submersible reached extreme depths", but was ignored.
He claimed to learn the main viewing window in the submersible was only certified to withstand pressures at depths of up to 1,300 meters - while OceanGate intended to take passengers down to more than three times that depth, and said the manufacturer would only certify to the lower depth due to experimental design of OceanGate's viewport.
Mr Lochridge alleged passengers who paid for a spot on the Titan voyages would not be told about his safety concerns, according to his complaints. The case between him and OceanGate was settled out of court a few months later, The New Republic reported.