Titan tragedy: US Coast Guard recovers more debris and human remains 4 months after sub imploded

The recovery and transfer of the final parts was finished last Wednesday, the Coast Guard announced

Titan tragedy: US Coast Guard recovers more debris and human remains 4 months after sub imploded
The Titan submersible had 5 people onboard when it disappeared (ET Tonight, ET Canada, CBS/YouTube)

LOS ANGELES, CALIFORNIA: More debris from the Titan sub wreckage has been recovered by the US Coast Guard, including what are believed to be human remains.

The Coast Guard released a picture of the 22-foot vessel's intact titanium endcap and announced that the recovery and transfer of the final parts was finished last Wednesday, as reported by Daily Mail.

The Coast Guard also reported that additional presumed human remains were carefully recovered from Titan's debris and transported for analysis by medics.

The salvage operation, carried out following a contract with the US Navy, was a continuation of earlier recovery efforts on the ocean floor, about 1,600 feet from the Titanic.

More debris discovered at unnamed port

The new materials were discharged at an unnamed port. Previously, the Coast Guard claimed that after the Titan's debris field was discovered at a depth of 12,500 feet, it recovered presumed human remains as well as Titan parts, as reported by ABC.

The Titan tragedy

The Titan is thought to have imploded as it descended into deep North Atlantic waters on June 18. Investigators from the US National Transportation Safety Board and the Transportation Safety Board of Canada joined the salvage expedition, according to the Coast Guard's Marine Board of Investigation.

The Coast Guard is working with international investigative agencies to schedule a joint review of the evidence in order to determine the next steps for forensic testing.

In the meantime, the Marine Board of Investigation will continue its investigation and witness depositions before a public hearing on the tragedy, officials said Tuesday.

Who were aboard when Titan imploded?

Stockton Rush, the CEO of OceanGate, Paul-Henri (PH) Nargeolet, a veteran of the French navy, Hamish Harding, a British billionaire, and Pakistani businessman Shahzada Dawood and his 19-year-old son Suleman were all killed, as reported by ABC7Chichago.

Some of the men had each spent up to $250,000 to view the infamous shipwreck. Debris was found on the seafloor following a significant search and rescue operation, and it was determined that the submarine had experienced a "catastrophic implosion."

Experts who claimed the vessel was unfit for the deep waters it visited had frequently raised concerns about safety.

Critics expressed concern about the viewport's lack of certification to such depths and claimed the carbon fiber hull was unfit for the purpose.

High-level investigation into tragedy 

As its highest level of investigation, the Coast Guard claimed to have established a Marine Board of investigation (MBI). The Titan submersible's hauled-ashore debris was discovered in June during a previous find.

The Horizon Arctic ship's massive metal pieces, including the nose with the porthole the five men would have used to see the Titanic, were unloaded at the Canadian Coast Guard pier in St John's, Newfoundland, Canada. 

They were swiftly wrapped in sizable tarpaulins and hoisted by cranes onto trucks that took them away for inspection. A large, white, curved metal section was among the pieces. Cables and other mechanical components were apparently stacked up inside another object.