OceanGate Expeditions' Titan submersible.OceanGate Expeditions via AP, FileA former OceanGate contractor said that the company used a partially manual system to track the submersible.They would first transcribe the details into a notebook and then transfer it to Excel, she said.She said she was removed from the team shortly after calling the navigation system "idiotic."A contractor for OceanGate's ill-fated Titan submersible says that the team tracked the vessel's position using a system that involved a notebook and an Excel spreadsheet.Antonella Wilby, a former OceanGate contractor, said during a Friday hearing on the Titan submersible's implosion that the team would manually update the vessel's coordinate data.According to Wilby's testimony, OceanGate's team would first transcribe the details into a notebook and then transfer the numbers to Microsoft Excel.She said the data was then imported into a mapping software to track the submersible's position.