During a recent US Coast Guard Marine Board of Investigation hearing, Wilby revealed that OceanGate relied on an Excel spreadsheet to map the submersible’s navigation. Furthermore, the data was manually entered by hand into the Excel spreadsheet.

OceanGate’s Titan submarine relied on ‘idiotic’ Excel spreadsheet - Former employees tell hearing into sub’s implosion last year that they raised safety concerns

A former OceanGate contractor revealed that the Titan submersible used a hand-typed Excel spreadsheet for navigation, which caused delays and raised s

A former OceanGate contractor claims teams would hand-write notes and input data into Microsoft Excel spreadsheets to help track the vessel.