At a Coast Guard hearing, submarine builder Karl Stanley recounted a harrowing trip that he took on OceanGate's Titan sub in 2019.

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

Remember the Titan submersible? Stockton Rush, founder and owner of the underwater tourism company OceanGate, took himself, a Titanic expert, and three tourists on a trip down to

OceanGate used a hand-typed Excel spreadsheet to track its ill-fated Titan submersible, according to a former ­contractor for the firm.

A former OceanGate contractor revealed that the Titan submersible used a hand-typed Excel spreadsheet for navigation, which caused delays and raised safety concerns before its implosion during a Titanic expedition.