'Presumed human remains' found at Titan debris site, says U.S. coast guard

The U.S. coast guard says it will conduct a formal analysis of what it calls "presumed human remains" that have been recovered from the wreckage area of the Titan submersible.

The remains were "carefully recovered" from the site, almost 700 kilometres off the coast of St. John's, the coast guard said in a news release Wednesday evening.

The vessel Horizon Arctic returned to port today, carrying the presumed remains and shattered pieces of the Titan, 10 days after it went missing with five souls on board. All five were deemed lost at sea last week, when debris was found near the wreck of the Titanic.

"The evidence will provide investigators from several international jurisdictions with critical insights into the cause of this tragedy," said Jason Neubauer, chair of the Marine Board of Investigation.  

"There is still a substantial amount of work to be done to understand the factors that led to the catastrophic loss of the Titan and help ensure a similar tragedy does not occur again."

Neubauer expressed his gratitude for the inter-agency and international recovery effort. 

A crane lifted the submersible's nose cone, pieces of its hull and a section of the tail into the air and lowered them to the Canadian Coast Guard dock in St. John's.

"It's just a very eerie feeling here this morning, knowing that people were on that, and that's all that's left," said Sarah Grenning, who stopped her morning run to watch the pieces being offloaded. "Those are people's sons and fathers and relatives. It's just unfortunate."

All five people on board are believed to have been killed by a sudden implosion. That includes OceanGate Expeditions CEO Stockton Rush, whose company built the Titan with an experimental design using carbon fibre and titanium. 

In previous interviews, Rush acknowledged the materials were not standard for deep-sea submersibles.

"I'd like to be remembered as an innovator," Rush told vlogger Alan Estrada in 2021. "I've broken some rules to make this. I think I've broken them with logic and good engineering behind me. The carbon fibre and titanium, there's a rule you don't do that. Well, I did."

The remnants of the submersible — those pieces of carbon fibre and titanium — will now be turned over to investigators to figure out what went wrong. Transportation safety boards from the United States and Canada, as well as the U.S. Coast Guard and RCMP are now probing the incident.

They may try to piece the vessel back together, according to a marine investigations expert who spoke with CBC News earlier this week.

"Just like an airline crash, they may try to reassemble the sub to put the parts together like a puzzle to determine where the failure point was," said Tom Maddox, founder and CEO of Underwater Forensic Investigations. "In the case of a massive implosion that's not going to be an easy task because much of the craft would have disintegrated."