The Titan submersible imploded, killing all 5 on board, the US Coast Guard says

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The race against time to find a submersible that disappeared on its way to the Titanic wreckage site entered a new phase of desperation as the final hours of oxygen left on board the tiny vessel ticked off the clock. (June 22)

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A renowned Titanic expert, a world-record holding adventurer, two members of one of Pakistan’s wealthiest families and the CEO of the company leading an expedition to the world’s most famous shipwreck are facing critical danger aboard a small submersible that went missing in the Atlantic Ocean. (June 21)

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A surveillance vessel has detected underwater noises in the area where rescuers are searching for a submersible that went missing in the North Atlantic while bringing five people down to the wreck of the Titanic, authorities said Wednesday. (June 21)

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FILE - This undated image provided by OceanGate Expeditions in June 2021 shows the company’s Titan submersible. Rescuers are racing against time to find the missing submersible carrying five people, who were reported overdue Sunday night. (OceanGate Expeditions via AP, File)

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In this satellite image provided by Maxar Technologies, from top to bottom, the vessels Horizon Arctic, Deep Energy and Skandi Vinland search for the missing submersible Titan, Thursday, June 22, 2023 in the Atlantic Ocean. (Satellite image ©2023 Maxar Technologies via AP)

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U.S. Coast Guard Rear Adm. John Mauger, commander of the First Coast Guard District, center at microphone, talks to the media Thursday, June 22, 2023, at Coast Guard Base Boston, in Boston. The U.S. Coast Guard says the missing submersible imploded near the wreckage of the Titanic, killing all five people on board. Coast Guard officials said during a news conference that they’ve notified the families of the crew of the Titan, which has been missing for several days. (AP Photo/Steven Senne)

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U.S. Coast Guard Rear Adm. John Mauger, commander of the First Coast Guard District, talks to the media, Thursday, June 22, 2023, at Coast Guard Base Boston, in Boston. The missing submersible Titan imploded near the wreckage of the Titanic, killing all five people on board, according to the U.S. Coast Guard. (AP Photo/Steven Senne)

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This photo provided by OceanGate Expeditions shows a submersible vessel named Titan used to visit the wreckage site of the Titanic. In a race against the clock on the high seas, an expanding international armada of ships and airplanes searched Tuesday, June 20, 2023, for the submersible that vanished in the North Atlantic while taking five people down to the wreck of the Titanic. (OceanGate Expeditions via AP)

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FILE - OceanGate CEO Stockton Rush emerges from the hatch atop the OceanGate submarine Cyclops 1 in the San Juan Islands, Wash., on Sept. 12, 2018. Rescuers are racing against time to find the missing submersible carrying five people, who were reported overdue Sunday night, June 18, 2023. (Alan Berner/The Seattle Times via AP, File)

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FILE - Submersible pilot Randy Holt, right, communicates with the support boat as he and Stockton Rush, left, CEO and Co-Founder of OceanGate, dive in the company’s submersible, “Antipodes,” about three miles off the coast of Fort Lauderdale, Fla., June 28, 2013. Rescuers are racing against time to find the missing submersible carrying five people, who were reported overdue Sunday night, June 18, 2023. (AP Photo/Wilfredo Lee, File)

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FILE - In this image released by Action Aviation, the submersible Titan is prepared for a dive into a remote area of the Atlantic Ocean on an expedition to the Titanic on Sunday, June 18, 2023. Rescuers are racing against time to find the missing submersible carrying five people, who were reported overdue Sunday night. (Action Aviation via AP, File)

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U.S. Coast Guard Rear Adm. John Mauger, commander of the First Coast Guard District, right, listens as Paul Hankins, U.S. Navy civilian contractor, supervisor of salvage, left, talks to the media, Thursday, June 22, 2023, at Coast Guard Base Boston, in Boston. The U.S. Coast Guard says the missing submersible imploded near the wreckage of the Titanic, killing all five people on board. Coast Guard officials said during the news conference that they’ve notified the families of the crew of the Titan, which has been missing for several days. (AP Photo/Steven Senne)

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FILE - The U.S. Coast Guard Cutter Warren Deyampert is docked as a member of the Coast Guard walks past, Tuesday, June 20, 2023, at Coast Guard Base Boston, in Boston. Rescuers are racing against time to find the missing submersible carrying five people, who were reported overdue Sunday night, June 18, 2023. (AP Photo/Steven Senne, File)

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FILE - The logo for an OceanGate Expeditions 2019 Titanic expedition is seen on a marine industrial warehouse office door in Everett, Wash., Tuesday, June 20, 2023. Rescuers are racing against time to find the missing submersible carrying five people, who were reported overdue Sunday night. (AP Photo/Ed Komenda, File)

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CORRECTS SPELLING OF THE NAME TO HENRI, INSTEAD OF HENRY This photo combo shows from left, Shahzada Dawood, Suleman Dawood, Paul-Henri Nargeolet, Stockton Rush, and Hamish Harding are facing critical danger aboard a small submersible that went missing in the Atlantic Ocean. The missing submersible Titan imploded near the wreckage of the Titanic, killing all five people on board, the U.S. Coast Guard announced Thursday, June 22, 2023. (AP Photo/File)

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U.S. Coast Guard Capt. Jamie Frederick, right, faces reporters as Royal Navy Lt Cdr Rich Kantharia, left, looks on during a news conference, Wednesday, June 21, 2023, at Coast Guard Base Boston, in Boston. The U.S. Coast Guard says sounds and banging noises have been heard from the search area for Titanic submersible. (AP Photo/Steven Senne)

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U.S. Coast Guard Capt. Jamie Frederick, left, faces reporters as Carl Hartsfield, director and senior program manager Oceanographic Systems Laboratory, center, and Paul Hankins, U.S. Navy civilian contractor, supervisor of salvage, right, look on during a news conference, Wednesday, June 21, 2023, at Coast Guard Base Boston, in Boston. The U.S. Coast Guard says sounds and banging noises have been heard from the search area for Titanic submersible. (AP Photo/Steven Senne)

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In this satellite image provided by Maxar Technologies, from top to bottom, the vessels L’Atalante, Horizon Arctic, Deep Energy, and Skandi Vinland search for the missing submersible Titan, Thursday June 22, 2023 in the Atlantic Ocean. (Satellite image ©2023 Maxar Technologies via AP)

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U.S. Coast Guard Capt. Jamie Frederick, center at microphone, faces reporters during a news conference, Wednesday, June 21, 2023, at Coast Guard Base Boston, in Boston. The U.S. Coast Guard says sounds and banging noises have been heard from the search area for Titanic submersible. (AP Photo/Steven Senne)

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FILE - This 2004 photo provided by the Institute for Exploration, Center for Archaeological Oceanography/University of Rhode Island/NOAA Office of Ocean Exploration, shows the remains of a coat and boots in the mud on the sea bed near the Titanic’s stern. Rescuers are racing against time to find the missing submersible carrying five people, who were reported overdue Sunday night, June 18, 2023. (Institute for Exploration, Center for Archaeological Oceanography/University of Rhode Island/NOAA Office of Ocean Exploration, File)

By PATRICK WHITTLE, HOLLY RAMER and LOLITA C. BALDOR

A submersible carrying five people to the Titanic imploded near the site of the shipwreck and killed everyone on board, authorities said Thursday, bringing a tragic end to a saga that included an urgent around-the-clock search and a worldwide vigil for the missing vessel.

The sliver of hope that remained for finding the five men alive was wiped away early Thursday, when the submersible’s 96-hour supply of oxygen was expected to run out following its Sunday launch and the Coast Guard announced that debris had been found roughly 1,600 feet (488 meters) from the Titanic in North Atlantic waters.

“This was a catastrophic implosion of the vessel,” said Rear Adm. John Mauger, of the First Coast Guard District.

After the craft was reported missing, the U.S. Navy went back and analyzed its acoustic data and found an anomaly that was “consistent with an implosion or explosion in the general vicinity of where the Titan submersible was operating when communications were lost,” a senior Navy official told The Associated Press on Thursday.

The official spoke on condition of anonymity to discuss a sensitive acoustic detection system.

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The Navy passed on that information to the Coast Guard, which continued its search because the Navy did not consider the data to be definitive.

OceanGate Expeditions, the company that owned and operated the submersible, said in a statement that all five people in the vessel, including CEO and pilot Stockton Rush, “have sadly been lost.”

The others on board were two members of a prominent Pakistani family, Shahzada Dawood and his son Suleman Dawood; British adventurer Hamish Harding; and Titanic expert Paul-Henri Nargeolet.

“These men were true explorers who shared a distinct spirit of adventure, and a deep passion for exploring and protecting the world’s oceans,” OceanGate said in a statement. “We grieve the loss of life and joy they brought to everyone they knew.”

OceanGate has been chronicling the Titanic’s decay and the underwater ecosystem around it via yearly voyages since 2021. The company has not responded to additional questions about the Titan’s voyage this week.

The company’s office was “closed indefinitely while the staff copes with the tragic loss of their team member,” according to a statement Thursday by the Port of Everett, which is about 30 miles (50 kilometers) north of downtown Seattle and is home to OceanGate.

The Coast Guard will continue searching for more signs about what happened to the Titan.

While the Navy likely detected the implosion Sunday through its acoustics system, underwater sounds heard Tuesday and Wednesday — which initially gave hope for a possible rescue — were probably unrelated to the submersible. The Navy’s possible clue was not known publicly until Thursday, when The Wall Street Journal first reported it.

With a search area covering thousands of miles — twice the size of Connecticut and in waters 2 1/2 miles (4 kilometers) deep — rescuers all week rushed ships, planes and other equipment to the site of the disappearance.

Broadcasters around the world started newscasts at the critical hour Thursday with news of the submersible. The Saudi-owned satellite channel Al Arabiya showed a clock on air counting down to their estimate of when the air could potentially run out.

The White House thanked the U.S. Coast Guard, along with Canadian, British and French partners who helped in the search and rescue efforts.

“Our hearts go out to the families and loved ones of those who lost their lives on the Titan. They have been through a harrowing ordeal over the past few days, and we are keeping them in our thoughts and prayers,” it said in a statement.

The Titan launched at 6 a.m. Sunday and was reported overdue that afternoon about 435 miles (700 kilometers) south of St. John’s, Newfoundland. By Thursday, when the oxygen supply was expected to run out, there was little hope of finding the crew alive.

In 2021 and 2022, at least 46 people successfully traveled on OceanGate’s submersible to the Titanic site, according to letters the company filed with a U.S. District Court in Norfolk, Virginia, that oversees matters involving the shipwreck. But questions about the submersible’s safety were raised by former passengers.

One of the company’s first customers likened a dive he made to the site two years ago to a suicide mission.

“Imagine a metal tube a few meters long with a sheet of metal for a floor. You can’t stand. You can’t kneel. Everyone is sitting close to or on top of each other,” said Arthur Loibl, a retired businessman and adventurer from Germany. “You can’t be claustrophobic.”

During the 2 1/2-hour descent and ascent, the lights were turned off to conserve energy, he said, with the only illumination coming from a fluorescent glow stick.

The dive was repeatedly delayed to fix a problem with the battery and the balancing weights. In total, the voyage took 10 1/2 hours.

Nicolai Roterman, a deep-sea ecologist and lecturer in marine biology at the University of Portsmouth, England, said the disappearance of the Titan highlights the dangers and unknowns of deep-sea tourism.

“Even the most reliable technology can fail, and therefore accidents will happen,” Roterman said. “With the growth in deep-sea tourism, we must expect more incidents like this.”

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Associated Press writers Jon Gambrell in Dubai, United Arab Emirates; Ben Finley in Norfolk, Virginia; Frank Jordans in Berlin; Danica Kirka in London; and John Leicester in Paris contributed to this report.