Among the last words heard from the crew of an experimental submersible headed for the wreck of the Titanic were “all good here”, according to a visual re-creation of the journey of the Titan before it imploded, killing all five on board. The US Coast Guard presented the animation on Monday on the first day of what is expected to be a two-week hearing on the causes of the implosion. Crew aboard the Titan were communicating via text messages with staff aboard the support ship Polar Prince, according to the presentation. The crew lost contact after an exchange of texts about the submersible’s depth and weight as it descended. The Polar Prince then sent repeated messages asking if the Titan could still see the ship on its onboard display. One of Titan’s final responses, which became spotty as it descended, was “all good here”. The Titan imploded on 18 June 2023, setting off a worldwide debate about the future of private undersea exploration. The submersible was left exposed to the elements while in storage for seven months in 2022 and 2023, Coast Guard representatives said in their initial remarks. The hull was also never reviewed by any third parties as is standard procedure, they said. That and its unconventional design subjected the Titan to scrutiny in the undersea exploration community. The hearing’s first witness, Tony Nissen, former engineering director for the company that owned the Titan, testified that he felt rushed to start operations during his time with the company. When asked if there was pressure to get the Titan into the water, he responded: “100%”. The marine board also asked Nissen if he felt that the pressure from Stockton Rush, OceanGate co-founder, compromised safety decisions and testing. After a long pause, he responded: “No … that’s a difficult question to answer, because given infinite time and infinite budget, you could do infinite testing.” Nissen also said that the Titan was struck by lightning during a test mission in 2018, and that might have compromised its hull. He said he was fired in 2019, the same year he would not let the submersible go to the Titanic. He said he also told Rush the Titan was “not working like we thought it would”. The former engineering director said the submersible later went through other tests and adjustments before its subsequent dives to the Titanic. However, he said he did not trust the operations staff and testified that when Stockton asked him to pilot the submersible, he replied: “I’m not getting in it.” Rush could be difficult to work for and was often very concerned with costs and project schedules, among other issues, Nissen testified. He said Rush would fight for what he wanted, which often changed day to day. He added that he tried to keep his clashes with Rush behind closed doors so that others in the company would not be aware. “Most people would eventually just back down to Stockton,” he said. The ongoing marine board of investigation is the highest level of marine casualty investigation conducted by the Coast Guard. When the hearing concludes, recommendations will be submitted to the service branch’s commandant. The National Transportation Safety Board is also conducting an investigation. “There are no words to ease the loss endured by the families impacted by this tragic incident,” said Jason Neubauer of the Coast Guard office of investigations, who led the hearing. “But we hope that this hearing will help shed light on the cause of the tragedy and prevent anything like this from happening again.” OceanGate suspended operations after the implosion. Also scheduled to speak were the company’s former finance director, Bonnie Carl, and former contractor Tym Catterson. Some key OceanGate representatives are not scheduled to testify. They include Rush’s widow, Wendy Rush, who was the company’s communications director. The search for the submersible attracted worldwide attention, as it became increasingly unlikely that anyone could have survived the implosion. Wreckage of the Titan was subsequently found on the ocean floor about 330 yards (300m) off the bow of the Titanic, Coast Guard officials said. The time frame for the investigation was initially a year, but the inquiry has taken longer. The Coast Guard said in July that the hearing would delve into “all aspects of the loss of the Titan”, including both mechanical considerations as well as compliance with regulations and crewmember qualifications. The Titan had been making voyages to the Titanic wreckage site going back to 2021.