Patrick Lahey, the chief executive of Triton submersibles – a leading manufacturer of deep sea crafts – testified at the Titan inquiry on Friday “I don’t believe that we should be operating experimental vehicles in the deep sea,” he said The hearing also heard from Antonella Wilby, who worked as a contractor for OceanGate, the company behind the Titan, who chose to leave the mission early Earlier the public hearing into the implosion in which five people died last June heard from an OceanGate mission specialist, a paying passenger taken on an expedition to see the Titanic “It was clear that it was dangerous,” Fred Hagen says, but adds “you don’t do [a dive] because it’s safe, you do it because it’s an adrenaline rush” Dave Dyer, an engineer from the University of Washington’s Applied Physics Lab, tells the hearing he originally thought the sub could be viable