OceanGate’s ill-fated Titan sub relied on a hand-typed Excel spreadsheet

A former OceanGate contractor, Antonella Wilby, testified earlier than a U.S. Coast Guard panel on Friday that the corporate’s Titan submarine, which imploded final yr throughout a dive to the Titanic’s wreckage, relied on an extremely convoluted navigation system.

As Wilby described it throughout the US Coast Guard Marine Board of Investigation listening to, the Titan’s GPS-like ultra-short baseline (USBL) acoustic positioning system generated knowledge on a sub’s velocity, depth, and place utilizing sound pings.

That info is usually mechanically loaded into mapping software program to maintain monitor of a sub’s place. However Wilby mentioned that for the Titan, the coordinate knowledge was transcribed right into a pocket book by hand after which entered into Excel earlier than loading the spreadsheet into mapping software program to trace the sub’s place on a hand-drawn map of the wreckage.

The OceanGate group tried to carry out these updates no less than each 5 minutes, but it surely was a gradual, guide course of accomplished whereas speaking with the gamepad-controlled sub through quick textual content messages. When Wilby really useful the corporate use customary software program to course of ping knowledge and plot the sub’s telemetry mechanically, the response was that the corporate wished to develop an in-house system, however didn’t have sufficient time.

Wilby was later taken off the group and flew house after telling supervisors, “That is an idiotic technique to do navigation.” She additionally testified that after Dive 80 in 2022, a loud bang / explosion was heard throughout the Titan’s ascent and that it was loud sufficient to be heard from the floor.

This mirrors testimony given yesterday by OceanGate’s former scientific director, Steven Ross. Like Wilby, he mentioned that the sound was attributed to a shifting of the stress hull in its plastic cradle, though Wilby testified that there have been solely “a couple of microns” of harm.

Based on Ross, six days earlier than the Titan submarine imploded, the sub’s pilot and the corporate’s co-founder, Stockton Rush, crashed the vessel right into a launch mechanism bulkhead whereas the vessel was making an attempt to resurface from Dive 87. The incident was attributable to a malfunction with a ballast tank, which inverted the submarine, inflicting different passengers to “tumble about,” in accordance with the Related Press. Nobody was injured throughout the incident, however Ross mentioned he didn’t know if an inspection of the sub was carried out afterward.