titanic submarine tour accident

Search Day 4: Titan submersible debris found, all onboard presumed dead

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All five people aboard the Titan submersible are believed to be dead, and debris discovered in the search area was consistent with a "catastrophic implosion," the U.S. Coast Guard said.

The debris was found off the bow of the sunken Titanic, officials said.

The search for the Titan, which went missing Sunday after it e mbark ed on a mission to survey the wreckage of the Titanic , had been focused on an area where Canadian aircraft detected "underwater noises" Tuesday and again yesterday.

U.S. Coast Guard officials had estimated the five passengers could run out of air just before 7:10 a.m. ET today, and the location of the missing vessel had remained a mystery even as the search intensified.

What to know about the search for the Titan

• The debris found at the seafloor was "consistent with a catastrophic implosion of the vessel," the Coast Guard said.
• The Coast Guard said today that a "debris field" had been found in the search area.
• The submersible disappeared Sunday during a mission to survey the wreckage of the Titanic, which is 900 nautical miles east of Cape Cod, Massachusetts.
• A sound consistent with an implosion was heard Sunday, shortly after the submersible lost communications, the a senior U.S. Navy official said. The sound was not definitive, the official said.
• Those on board have been identified as Stockton Rush, the CEO of OceanGate Expeditions, the company behind the mission; British billionaire Hamish Harding, the owner of Action Aviation; French dive expert Paul-Henri Nargeolet; and prominent Pakistani businessman Shahzada Dawood and his son, Suleman.

White House offers condolences to families of Titan victims

The Associated Press

The White House offered its condolences to the families mourning the five people killed aboard the Titan submersible.

U.S. Coast Guard officials announced their deaths Thursday following the vessel’s catastrophic implosion in the North Atlantic.

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

The statement also thanked the searchers, including the Coast Guard, involved in the international effort to find the submersible.

“This has been a testament to the skill and professionalism that the men and women who serve our nation continue to demonstrate every single day,” the statement said.

David Pogue on the misinformation and misunderstandings swirling around the Titanic sub

Kat Tenbarge

Tech journalist and “CBS Sunday Morning” correspondent David Pogue, who observed an OceanGate Expeditions Titanic shipwreck trip last year, the last before the Titan disappeared this week, said a “massive amount of misinformation” has circulated online this week.

In an interview, Pogue, whose  coverage  of the submersible last year has attracted renewed interest in light of the disaster, also responded to attacks on his reporting over the past two days.

Critics on Twitter have suggested that Pogue and other journalists undersold how dangerous the submersible was or even that he conspired to shield the company from accountability. 

Pogue countered that the safety issues were the “centerpiece” of his OceanGate coverage. “There is a fundamental lack of understanding of the deep-sea diving industry process,” he said. 

Read the full story here.

Paul-Henri Nargeolet 'knew the risks that were possible with this expedition,' stepson says

Tim Stelloh

Paul-Henri Nargeolet, a French diver and Navy veteran who died aboard the Titan, was “fearless” and understood the potential danger of traveling to the Titanic's wreckage, his stepson said in an interview.

"Anyone who gets into those submersibles knows the risks that could happen," stepson John Paschall said, adding: "Going into this, he knew the risks that were possible with this expedition."

Paschall described Nargeolet, who had led several expeditions to the sunken passenger ship and supervised the recovery of at least 5,000 artifacts, as “the world expert on the Titanic.”

The ocean, Paschall said, was Nargeolet’s “home away from home. He was just so comfortable out there and in any ocean and any lake or whatever it was. The water was just so connected to him.”

“And that especially goes for the Titanic,” Paschall said. “He put so much of his life into that ship.”

Paschall also recalled Nargeolet as a “really incredible stepfather” — someone who was respectful, loving and funny. 

While Nargeolet knew the risks of traveling in a submersible, Paschall said, he wanted to know more about how the company that operated the boat, OceanGate, had maintained the vessel and whether it had kept passengers properly informed.

“Were all the safety procedures followed as closely as possible?” Paschall said. “Was everyone aware of everything that was going on? Was there anything that was missed during any kind of inspection?”

19-year-old Titan passenger was ‘terrified’ before trip, his aunt says

Daniel Arkin

In the days before the Titan vessel  went into the ocean  off Newfoundland, Canada, the 19-year-old university student accompanying his father on the expedition expressed hesitation about going, his aunt said in an interview Thursday.

Azmeh Dawood — the older sister of Pakistani businessman Shahzada Dawood — said her nephew, Suleman, informed a relative that he “wasn’t very up for it” and felt “terrified” about the trip to explore the wreckage of the Titanic.

But he ended up going aboard  OceanGate’s 22-foot submersible  because the trip fell over Father’s Day weekend and he was eager to please his dad, who was passionate about the lore of the Titanic, Azmeh Dawood said.

'We will miss him today and every day,' Paul-Henri Nargeolet's family say

Phil Helsel

The family of French dive expert Paul-Henri Nargeolet say they will remember him for the rest of their lives after he and four other people died in the Titan submersible accident.

Nargeolet was an “extraordinary father and husband,” the family said.

"He is a man who will be remembered as one of the greatest deep-sea explorers in modern history. When you think of the Titanic and all we know about the ship today, you will think of Paul-Henri Nargeolet and his legendary work," they said in a statement.

The statement added: "But what we will remember him most for is his big heart, his incredible sense of humor and how much he loved his family. We will miss him today and every day for the rest of our lives."

Nargeolet led several expeditions to the Titanic wreckage site, completing at least 35 dives in submersibles and supervising the recovery of at least 5,000 artifacts, including the recovery of the "big piece" — a 20-ton section of the Titanic’s hull — according to Experiential Media Group, where he was the director of underwater research.

The family thanked everyone involved in the dayslong rescue effort and extended condolences to the families of the others who died.

Hamish Harding remembered as an inspiration

The family of British billionaire Hamish Harding and his company are “united in grief” with the families of four other people all dead in the Titan submersible incident, Action Aviation said in a statement.

“Hamish Harding was a loving husband to his wife and a dedicated father to his two sons, whom he loved deeply. To his team in Action Aviation, he was a guide, an inspiration, a support, and a Living Legend,” the company said.

Harding, a former pilot and explorer, was inducted as a Living Legend of Aviation last year, Action Aviation said.

Family of father and son killed in submersible ask for prayers

Antonio Planas

The family of the father and son who died in the Titan submersible are asking for prayers and said they found strength in rescue efforts.

Pakistani businessman Shahzada Dawood and his son, Suleman, were among the five people killed on the submersible that imploded.

“It is with profound grief that we announce the passing of Shahzada and Suleman Dawood," the family said in a statement released by the Dawood Foundation. "Our beloved sons were aboard OceanGate’s Titan submersible that perished underwater. Please continue to keep the departed souls and our family in your prayers during this difficult period of mourning.”

The family said they were grateful to the people involved in the rescue efforts, saying that "their untiring efforts were a source of strength for us during this time."

"We are also indebted to our friends, family, colleagues, and well-wishers from all over the world who have stood by us during our hour of need," the statement said. "The immense love and support we receive continues to help us to endure this unimaginable loss.”

The Dawood family also offered condolences to the families of the other people aboard the Titan.

Acoustic 'anomaly' consistent with implosion had been detected, Navy official confirms

Mosheh Gains

Courtney Kube

A U.S. Navy analysis of acoustic data “detected an anomaly consistent with an implosion or explosion” near the Titan around the time it lost communications, a senior Navy official said.

The sound consistent with an implosion was heard Sunday, shortly after the submersible lost communications, the official said.

The sound was not definitive, the official said, and it was immediately shared with commanders, who decided to continue searching.

“This information was considered with the compilation of additional acoustic data provided by other partners and the decision was made to continue our mission as a search and rescue and make every effort to save the lives on board,” the Navy official said.

The Wall Street Journal first reported that the sound had been detected.

'Titanic' director James Cameron sees similarities between sunken ship and submersible

“Titanic” director James Cameron said he was astonished by the similarities between the ship that sank in 1912 and the Titan submersible that imploded with five people aboard.

“I’m struck by the similarity of the Titanic disaster itself, where the captain was repeatedly warned about ice ahead of his ship, and yet, he steamed at full speed into an ice field on a moonless night. And many people died as a result,” Cameron said in an interview with ABC News.

“For a very similar tragedy, where warning signs went unheeded, to take place at the same exact site, with all the diving that’s going on all around the world … it’s just astonishing,” he added. “It’s really quite surreal.”

Cameron said submersible diving is a “mature art” and noted many people in the deep submergence engineering community wrote letters to OceanGate Expeditions, the company behind the mission, pleading that what the company was doing was “too experimental to carry passengers.”

The movie director said one of the passengers aboard the Titan, French dive expert Paul Henry Nargeolet, whom he called “PH,” was a friend he had known for 25 years. He said Nargeolet’s death “is almost impossible for me to process.”

Cameron said he's made 33 dives to the Titanic wreckage site and calculated he's “spent more time on the ship than the captain did back in the day.”

Cameron’s 1997 film starring Leonardo DiCaprio and Kate Winslet is among the highest-grossing movies of all time, raking in more than $2 billion.

Ocean depth will make recovering bodies from Titanic submersible difficult

'i hope this discovery provides some solace': coast guard's mauger.

Marlene Lenthang

The desperate search for the missing Titan has ended in tragedy after debris from the submersible was found and its five occupants were presumed dead. 

“On behalf of the United States Coast Guard and the entire unified command, I offer my deepest condolences to the families," Rear Adm. John Mauger of the Coast Guard said this afternoon. "I can only imagine what this has been like for them and I hope that this discovery provides some solace, during this difficult time."

He said the unified command has been in contact with Britain and France, as the nations had citizens aboard the vessel. 

5 major pieces of debris led to identification of Titan, officials say

Undersea expert Paul Hanken said five major different pieces of debris told authorities that it was the remains of the Titan. 

“The initial thing we found was the nose cone, which was outside the pressure hull. We then found a large debris field, within that large debris field we found the front end bell of the pressure hull. That was the first indication that there was a catastrophic event,” he said. 

A second, smaller debris field was also found, which included the other end of the pressure hull, “which basically comprised the totality of that pressure vessel,” Hanken said.

Teams on site will continue to map the debris field on the ocean floor. 

Sonar buoys in search did not detect any implosion sounds

It's not clear exactly when the Titan imploded, but Coast Guard officials said that sonar buoys dispatched "did not hear any signs of catastrophic failure."

"This was a catastrophic implosion of the vessel which would have generated a significant broadband sound down there that the sonar buoys would have picked up," Rear Adm. John Mauger of the Coast Guard said at a news conference today.

Sonar buoys had detected noises in the water Tuesday and yesterday that were being assessed for patterns, but he said today "there doesn't appear to be any connection between the noises and the location [of the debris] on the sea floor."

Debris is consistent with a 'catastrophic implosion' of sub

The debris found at the sea floor was "consistent with a catastrophic implosion of the vessel," Rear Adm. John Mauger of the Coast Guard said.

When asked if it's possible the vessel collided with the Titanic, he said it was found off the bow of the Titanic.

Carl Hartsfield with the Woods Hole Oceanographic Institution said the debris data is consistent with an implosion in the water column.

" It's in an area where there's not any debris of the Titanic, it is a smooth bottom. To my knowledge ... there's no Titanic wreckage in that area and again 200 plus meters from the bow, and consistent with the location of last communication for an implosion in the water column," he said.

Dawood's older sister feels like she's been 'caught in a really bad film'

The older sister of Pakistani businessman Shahzada Dawood feels "absolutely heartbroken" that her brother and her 19-year-old nephew were aboard the Titan vessel.

"I feel very bad that the whole world has had to go through so much trauma, so much suspense," Azmeh Dawood said in a phone interview this afternoon, speaking from the home in Amsterdam she shares with her husband.

"I feel like I’ve been caught in a really bad film, with a countdown, but you didn’t know what you’re counting down to," she said, fighting back tears. "I personally have found it kind of difficult to breathe thinking of them."

Azmeh claimed that her nephew did not want to go on the submarine but agreed to take part in the expedition because it was important to his father, a lifelong Titanic obsessive. Suleman "wasn't very up for it" and "terrified," she claimed, explaining that the 19-year-old expressed his concerns to another family member.

"If you gave me a million dollars, I would not have gotten into the Titan," she said.

Tail cone of Titan found 1,600 feet from bow of the Titanic floor, Coast Guard says

“This morning, an ROV from the vessel Horizon Arctic discovered the tail cone of the Titan submersible approximately 1,600 feet from the bow of the Titanic on the sea floor," Rear Adm. John Mauger, said this afternoon.

Afterward, the ROV found additional debris and it was found to be consistent with the "the catastrophic loss of the pressure chamber," he said.

The families of the five crew members on board were notified afterward.

OceanGate says those aboard sub have 'sadly been lost'

OceanGate issued a statement moments ago on the status of the sub:

"We now believe that our CEO Stockton Rush, Shahzada Dawood and his son Suleman Dawood, Hamish Harding, and Paul-Henri Nargeolet, have sadly been lost.

"These men were true explorers who shared a distinct spirit of adventure, and a deep passion for exploring and protecting the world’s oceans. Our hearts are with these five souls and every member of their families during this tragic time. We grieve the loss of life and joy they brought to everyone they knew.

"This is an extremely sad time for our dedicated employees who are exhausted and grieving deeply over this loss. The entire OceanGate family is deeply grateful for the countless men and women from multiple organizations of the international community who expedited wide-ranging resources and have worked so very hard on this mission.

"We appreciate their commitment to finding these five explorers, and their days and nights of tireless work in support of our crew and their families. This is a very sad time for the entire explorer community, and for each of the family members of those lost at sea. We respectfully ask that the privacy of these families be respected during this most painful time."

Rush 'got unlucky,' friends say

Elizabeth Chuck

Rush, the OceanGate executive who is on board the missing Titan submersible with four other people, is an intelligent explorer who is adept at managing risk, according to longtime friends.

Rush is "one of the most risk-averse people I know,” said Guillermo Söhnlein, who co-founded OceanGate.

Söhnlein said he last spoke with Rush about two weeks before the Titan’s expedition, its third to the Titanic site. Rush did not express any worries about the upcoming voyage.

“If anything, it’s the other way around,” Söhnlein said. “Any explorer will always tell you that on every expedition, on every mission, on every dive, something always goes wrong. You have to anticipate that something is going to go wrong. And the more guides you conduct, the more missions you conduct, the more expeditions you do, the more you start limiting those things.”

Another friend, oceanographer Gregory Stone, said Rush was upfront about the dangers of his missions.

“He wasn’t selling tickets like it was Disneyland. He was telling people exactly what it was — it was a dangerous thing,” Stone said. “He had taken every precaution possible, and he got unlucky. Something happened.”

Pakistani businessman is not a 'risk-taker,' friend says

Dawood, the Pakistani businessman aboard the Titan, is a "quiet and unassuming" person and not a "daredevil" by nature, according to one of his friends.

"I think he would want his legacy and his memory to be one where ... he wouldn't want to be seen as some daredevil, risk-taking explorer," said Bill Diamond, the chief executive of the SETI Institute, a California-based organization that searches for signs of extraterrestrial life. (Dawood is on the group's board of trustees.)

"I think he would want to be remembered as a humble businessman, curious about the world and fascinated by the opportunity to take this excursion and be on this expedition," said Diamond, who spoke to NBC News via Zoom.

Diamond said he believed Dawood would never do anything that would jeopardize the life of his 19-year-old son, Suleman, who is also aboard the Titan.

"I'm sure he would not have brought his son along if he thought this was something seriously dangerous," Diamond said. "I think he knew the risks, at the same time I think he felt that the technology was tried and tested and safe enough."

Coast Guard says 'debris field' found in Titan search area

The Coast Guard said in a tweet at 11:48 a.m. ET that a remotely operated vehicle discovered a "debris field" in the Titan vessel search area.

"Experts within the unified command are evaluating the information," the agency said.

Officials are planning to hold a news briefing at 3 p.m. ET.

Search is a 'needle in a haystack,' expert says

While remaining realistic about the chances of finding the Titan on the vast ocean floor, scientists are still offering a glimmer of hope.

Rob Larter, a marine geophysicist with the British Antarctic Survey, said in London today that it’s incredibly difficult to find an object the size of the Titan in a totally dark environment. He says it’s not going to be found with active sonar from a surface ship, but rather with a towed or autonomous vehicle that’s near the seafloor. Even those vehicles can see just a matter of meters.

“I’ve been involved in searches for hydrothermal vent sites,” he said. “We’ve had the vehicles just a few tens of meters away and missed them and then come back and find them. So it really is, you know, literally it’s just a needle in a haystack situation unless you’ve got a pretty precise location”

Jamie Pringle, an expert in forensic geosciences at Keele University in the United Kingdom, says the first 24 hours are critical in these kinds of rescue operations and that time period has long passed.

“So there’s always a chance. It’s never zero. But I think obviously the longer the time elapses, the lower the chance of success,” he said.

Larter called it a “desperate situation” buy says you try to stay optimistic as long as possible.

“It’s kind of unimaginable if people are alive, trapped in a submersible with oxygen supplies running down,” he said.

Chance of finding survivors 'close to zero,' retired Navy captain says

Corky Siemaszko

With the trapped Titan passengers likely out of oxygen, David Marquet, a retired Navy captain, said today "the probability is perilously close to zero that we will be able to recover them alive."

The Titan had 96 hours worth of oxygen, he told NBC News' Tom Costello.

"Things generally work up to the design spec, but they don’t somehow magically last beyond the design spec," Marquet said, referring to the oxygen estimates.

Dawood's friend says his death would be 'a tremendous loss for the world'

Ammad Adam met Shahzada Dawood at a United Nations conference in February 2020. Dawood gave a speech about empowering women and girls in Pakistan, and Adam was impressed by his remarks. The two kept in touch over the last three years, striking up a friendship via Facebook.

Adam, 34, is now "praying for a miracle" and hoping that Dawood and the four other passengers aboard the Titan will be found alive.

"I can tell you that Shahzada was a real great gentleman, a fine gentleman," he said. "I know everyone says, 'Oh, such and such is a good person,' but he's actually a genuinely kind-hearted person and you could see that in his actions."

Adam said Dawood dedicated much of his adult life to charitable activity, including donating to Covid relief funds in the early days of the pandemic.

"I hope for a miracle from God," Adam said, "because his death would be a tremendous loss for the world. He tries to help people who need help, and we need more people like that."

Teen trapped in missing sub is U.K. business school student

Henry Austin

The youngest of the five people aboard the missing submersible had just completed his first year at the Strathclyde Business School in the Scottish city of Glasgow.

The University of Strathclyde said in a statement that it was “deeply concerned” about Suleman Dawood, 19, “his father and the others involved in this incident.”

“Our thoughts are with their families and loved ones and we continue to hope for a positive outcome,” the statement added.

Weather at site is 'pretty good' for search, marine forecaster says

Julianne McShane

Weather at the scene of the search consists of winds blowing at 14 mph with gusts up to 19 mph, according to a tweet from the Coast Guard , which added that there are 4 to 5 foot swells in the water and the air temperature is about 50 degrees Fahrenheit.

Chris Parker, president and chief forecaster at Marine Weather Center , described those conditions as "pretty good," adding that they are mild to moderate for the area, which he said normally experiences higher waves and stronger winds of 30 to 40 knots on the Beaufort Wind Scale .

"An average 30-foot sailboat would be happy in those conditions unless they're going into the wind," he told NBC News of the conditions today.

"Those conditions should not be at all problematic" for the search, he added.

'A lot of the systems worked, but a lot of them really didn’t,' says Discovery Channel host who tested out the Titan

Josh Gates, the host of Discovery Channel’s "Expedition Unknown," told CNN's Anderson Cooper on Wednesday that he tested out the Titan for a possible segment for his show in 2021 and that "a lot of the systems worked, but a lot of them really didn’t" at the time.

"In the course of going out on Titan and diving down inside of it, it just became clear to us at that time that there was a lot that still needed to be worked out with the sub," he said on "Anderson Cooper 360."

"Ultimately, I just felt by the end of that trip that I just couldn’t get comfortable with Titan at that time. I felt that it needed time to go out and do missions and kind of get into a groove before we were going to go and film with it," Gates added.

Gates said the Titan offers a more comfortable fit inside compared to other submersibles due to the carbon fiber i t is partially made out of , allowing it to be larger than other subs that can only fit two to three people.

"On the one hand you have this incredibly innovative, novel design; on the other hand there are a lot of unknowns," he said of the Titan, adding that it has been “very surreal” and “haunting” to watch the search for the missing submersible.

OceanGate CEO has personal connection to famous Titanic victims

Rush, who developed and piloted the missing sub, had a ''pressing need'' to document the Titanic’s watery graveyard — but he had a personal connection to the wreck, as well.

His wife, Wendy Rush, is a great-great-granddaughter of two of the Titanic’s best-known victims, Isidor and Ida Straus. 

Isidor Straus was the co-owner of the Macy’s department store. His wife, Ida, refused to be separated from him when the Titanic started sinking, giving up her own seat on a lifeboat to stay with him on board. Survivors recount seeing them arm in arm on the ship’s deck as it went down. 

Their fate aboard the Titanic was portrayed in James Cameron’s movie, in which an elderly couple choose to spend their last moments in bed together as water comes rushing onboard. Theirs has been remembered as a '' love story for the ages .''

According to the Straus Historical Society, Wendy Rush is the daughter of Dr. Richard Weil III, who is the son of Richard Weil Jr., a former president of Macy’s New York. Weil Jr. is the son of Minnie Straus, Isidor and Ida’s daughter. 

Wendy Rush, née Weil, married Rush in 1986, according to a New York Times wedding announcement . 

A tale of two disasters: Missing sub captivates the world days after deadly migrant shipwreck

Chantal Da Silva

As  rescuers raced to find  the five people who  vanished after launching a mission  to survey the Titanic, another disaster at sea that’s feared to have  left hundreds of people dead  has been swept from the spotlight.

Last week’s sinking of a fishing boat crowded with migrants trying to get from Libya to Italy sparked arrests, violent protests and questions about authorities’ failure to act or find a long-term solution to the issue. But many human rights advocates are frustrated that the world seems to have already moved on and that the resources and media attention being dedicated to the Titan rescue efforts far outweigh those for the sunken migrant ship.

“It’s a horrifying and disgusting contrast,” Judith Sunderland, associate director for Human Rights Watch’s Europe and Central Asia division, said in a telephone interview, reflecting on the apparent disparities in resources and media attention on the two crises.

“The willingness to allow certain people to die while every effort is made to save others ... it’s a, you know, really dark reflection on humanity,” she said.

Senior British submariner helps with search

Alexander Smith

The British government said today it has dispatched one of its senior submariners, Lt. Cmdr. Richard Kantharia, to assist with the rescue mission.

Kantharia was already embedded in the U.S. Atlantic submarine fleet and joined the rescue effort Tuesday, a spokesperson for No. 10 Downing St. said by email.

Britain is also providing a Boeing C-17 Globemaster aircraft to transport equipment involved with the search.

Dawood family says 'sole focus' is on rescue of father and son

Sabrina Dawood, the sister of Shahzada Dawood, 48, one of the five people on board the Titan along with his 19-year-old son, Suleman, told Sky News in a Facebook message yesterday that "the Dawood family’s sole focus is the rescue of our beloved Shahzada and Suleman Dawood."

"We trust that the family will be granted privacy as we deal with this crisis," she said.

She added the family is also "deeply grateful" for news organizations' "constant coverage" of the missing submersible, but that they "are unable to address any questions or comments at the moment."

Searchers will need to 'get very, very lucky' to find sub, expert says

Simon Boxall, who teaches oceanography at England's University of Southampton, laid out in stark terms the daunting task facing those trying to find the cylindrical vessel. "The only way they are going to succeed is to get very, very lucky," he told NBC News by telephone early today.

On land, he explained, officials would have an array of tools at their disposal, from GPS and infrared tech to old-fashioned binoculars. "Underwater, that all goes out of the window," said Boxall, who believes given the extensive search by air that it's unlikely the craft is still bobbing around on the surface.

One way to scour the seabed is to send a robotic submersible down there with a light and a camera. That would be like going to an area twice the size of Connecticut "with a flashlight and just having a look around for something this small — it’s a big, big task,” he said.

Officials are also relying on sonar: bouncing sound off the seabed to create an image of what's down there, a painstaking task that Boxall likened to painting the Golden Gate Bridge "with a child's paintbrush."

If it lost power, the submersible likely drifted down to the seabed, traveling up to 15 miles on strong, deep-ocean currents that take water all the way to Antarctica, he said. Compounding that, this area is "very bumpy" and there is "this great big thing called the Titanic, which sank in the area, scattering all kinds of things far and wide."

Magellan ROV to assist in today's search efforts

The Magellan “working class” remotely operated vehicle, or ROV, will assist in the day’s search , Rear Adm. John W. Mauger of the Coast Guard said on NBC’s “TODAY” show.

A working class ROV has a manipulator arm that can attach to a hull point and potentially lift it off the surface, Explorers Club President Richard Garriott previously told NBC New York in an interview.

The Explorers Club, a society dedicated to scientific exploration and field study that two Titan passengers — Harding and Nargeolet — are part of, previously criticized the Coast Guard for not permitting the use of the Magellan ROV earlier.

Responding to the criticism, Mauger said: “We really had to start from scratch and bring all the capability that was available to bear on this problem,” adding that officials “made decisions to prioritize” what was closest to the site.

Coast Guard will 'continue with the search and rescue efforts'

Rear Adm. John W. Mauger said on the "TODAY" show that the Coast Guard is "going to continue with the search and rescue efforts" throughout the day despite fears of the oxygen supply on the vessel running out.

"We use all available data and information to prosecute those searches but we continue to find particularly in complex cases that peoples' will to live really needs to be accounted for as well," he said.

Mauger added that "teams were working really hard through the night" and that medical personnel were also moving into the site today.

Two more ROVs deployed

The Horizon Arctic, a Canadian-flagged ship, which is helping with the search and rescue mission, has deployed its remotely operated vehicle, or ROV, which is now on the seabed, the Coast Guard said on Twitter .

Meanwhile, the French government-backed vessel L'Atalante is about to deploy its own ROV, Victor 6000, into the ocean, the Coast Guard said .

Coast Guard's estimated time for oxygen running out reached

It's now 7:08 a.m. ET, the time that the Coast Guard estimated the oxygen on the missing submersible could run out.

The exact situation onboard the vessel, which had 96 hours of oxygen when it set off, according to its specs and Coast Guard officials, is not known.

Experts have pointed out that there are a number of variables that could impact the consumption of oxygen onboard.

"There are so many variables," Simon Boxall, who teaches oceanography at England’s University of Southampton, told NBC News. “We have no idea how long they will actually last in terms of oxygen — all that we know is that it’s imminent.”

Social media users tracking marine traffic in search area via satellite

As the search for the submersible stretched into today, some social media users said they were following the effort and tracking marine traffic in the area via satellite.

"Never in my life would I have thought I’d be awake at 2:50am watching ships, on satellite, looking for billionaires stranded in a sub, AT the Titanic in 2023 but here I am refreshing Twitter again," one user tweeted , writing that the person was using the app MarineTraffic .

"I’ve been checking periodically all night," one user responded just after 4:30 a.m. ET.

"Haven’t been able to tear myself away from the computer for days now," another wrote .

The MarineTraffic app announced yesterday it was “making all positional data, including satellite positions, available for free for the Polar Prince in the ongoing search & rescue mission.”

Impossible to know exactly how much oxygen left in sub, expert says

The Coast Guard predicts the oxygen supply on the submersible will run out at around 7:08 a.m. ET today. But it doesn't quite work like that, according to Simon Boxall, who teaches oceanography at England's University of Southampton.

"There are so many variables," Boxall told NBC News. "We have no idea how long they will actually last in terms of oxygen — all that we know is that it's imminent." One of the main factors governing the rate of oxygen consumption is the physical state of those on board. If their bodies start to shut down due to hypothermia, Boxall said, it would mean "they're using a lot less oxygen" — albeit presenting a new danger for the crew.

Although the Coast Guard has presented this timeline, officials know about these variables, according to Boxall. "It's not like" at 7.08 a.m. the rescuers will "pack up their bags and say, 'Right, we'll do a recovery operation, but we're taking the urgency off," he said. "They will still see this as being very urgent for next couple of days."

2 new vessels arrive on scene, conducting search patterns

Two new vessels have arrived on the scene and are conducting search patterns in the bid to find the Titan, a Coast Guard spokesperson said this morning.

The Canadian CGS Ann Harvey and the Motor Vessel Horizon Arctic, a remotely operated vehicle, or ROV, arrived to aid in the bid to find the missing submersible, Petty Officer Ryan Noel said.

The Coast Guard had previously said the two vessels were en route to the search site.

Noel said rescuers were also in the process of trying to get “one of the newer ROVs onsite down there." He could not confirm which ROV that was, but said the Coast Guard would be providing updates as more information became available.

Search patterns show more sea scanned in bid to find the Titan

The Coast Guard released a new image yesterday showing search patterns so far as efforts expanded in the race to find the missing sub.

It also released search patterns Tuesday, with the difference depicted below.

Searchers had covered an area twice the size of Connecticut on the surface, and the search underwater is about 2 ½ miles deep, officials said yesterday.

Ex-senior naval officer has 'no optimism' about underwater noises

The search and rescue mission was given fresh hope after a Canadian aircraft detected "underwater noises" on Tuesday and yesterday. But Chris Parry, a former rear admiral in the British Royal Navy, says he isn't greatly encouraged.

"I've got no optimism about that at all," Parry told NBC News. "Put your head in the water, you’re going to hear a lot of mechanical noises, particularly in the vicinity of a disintegrating wreck like the Titanic."

He called the optimism "clutching at straws."

The Titanic brought them together, and a tiny vessel could doom them

The five-person crew rescuers are racing to find went missing after departing on a mission Sunday morning from the Polar Prince, a Canadian research vessel, to survey the Titanic firsthand.

The passengers are now at the center of a much higher-stakes race against the clock — a frantic international search and rescue effort that must succeed before the 22-foot vessel runs out of oxygen this morning.

The passengers are Rush, who lives in Seattle and served as the vessel’s pilot; Harding, a British tycoon who lives in the United Arab Emirates; Dawood and his son, Suleman, scions of a Pakistani business dynasty; and the French mariner and Titanic expert Nargeolet, who has been nicknamed “Mr. Titanic.” 

The men are likely bound together forever, no matter what happens next.

French deep sea robot arrives to join search

Due to join the hunt today was Victor 6000, an undersea robot dispatched by the French government that has the rare ability to dive deeper than the Titanic wreck.

The French research vessel L'Atalante, which is carrying the robot, has now arrived in the same area as other ships involved in the search as of 4 a.m. ET., according to the tracking website Marine Traffic.

Victor 6000 is so named because it can dive to 6,000 meters — some 20,000 feet. That puts the Titanic, 12,500 feet down, easily within its range.

It's familiar territory for Ifremer, the state-run French ocean research institute that operates the robot and was part of the team that first located the Titanic wreck in 1985. The institute dispatched the remotely operated vehicle, or ROV, this week at the request of the U.S. Navy.

It isn't able to lift the missing submersible own its own, but it could hook up the 10-ton carbon-fiber and titanium tube to another ship capable of bringing it to the surface, Olivier Lefort, the head of naval operations at Ifremer, told Reuters. “This is the logic of seafarers. Our attitude was: We are close, we have to go,” he said.

Desperate search for sub as oxygen supply dwindles

The search for the missing submersible grew more frantic this morning, with officials fearing the oxygen supply on the vessel could soon run out.

Coast Guard officials estimated that the Titan, which had a 96-hour oxygen supply, could run out of air just before 7:10 a.m. ET, but the exact situation onboard the vessel, including potential efforts to conserve oxygen, is not clear.

The search for the sub, which went missing Sunday after embarking on a mission to explore the Titanic, has been focused on an area where Canadian aircraft detected “underwater noises” Tuesday, and again yesterday.

5 aboard Titanic tourist sub are dead after ‘catastrophic implosion’

The five passengers on a sub that vanished on a trip to explore the Titanic wreckage have died after a catastrophic implosion, U.S. Coast Guard says.

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All five passengers aboard a submersible that vanished while on a dive to explore the Titanic wreck site have died, officials said Thursday after underwater robots discovered seafloor debris from the sub that was “consistent with a catastrophic implosion.”

A robot from the Canadian vessel Horizon Arctic discovered several major pieces of the 21-foot sub, the Titan , in a debris field about 1,600 feet from the bow of the Titanic, U.S. Coast Guard Rear Adm. John W. Mauger said at a news conference.

“The debris is consistent with the catastrophic loss of the pressure chamber,” Mauger said.

The families of the passengers have been notified, he said.

“On behalf of the U.S. Coast Guard and the entire unified command, I offer my deepest condolences to the families,” he said. “I can only imagine what this has been like for them. I hope that this discovery provides some solace during this difficult time.”

The five passengers were Stockton Rush, the pilot of the exploration and chief executive of OceanGate Expeditions, which owns and operates the sub; Hamish Harding , chairman of Action Aviation, a Dubai-based aircraft dealer; Paul-Henry Nargeolet, a veteran and accomplished diver with more than 30 trips to the wreck site; and Pakistani businessman Shahzada Dawood and son Suleman.

OceanGate said in a statement that its “hearts are with these five souls and every member of their families during this tragic time.”

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

World & Nation

‘Catastrophic’ safety concerns raised about sub long before ill-fated Titanic voyage

Long before a submersible vanished on an expedition to explore the wreck of the Titanic, concerns were raised about the safety of the vessel.

June 21, 2023

The sub was reported missing after it lost contact with the Canadian research vessel Polar Prince about 1 hour and 45 minutes into its dive Sunday about 900 miles east of Cape Cod, Mass., the Coast Guard said.

Its disappearance set off an international search-and-rescue effort , as crews raced around the clock using specialized equipment to find the sub, which was designed to have an initial air supply of 96 hours. Officials also said it had only “limited rations” of food and water.

The search grew to 10,000 square miles, roughly the size of Massachusetts, and went 2½ miles deep. Through the days-long effort, officials maintained optimism that the operation would remain a search-and-rescue effort and not a recovery mission.

Assets launched in the search included American and Canadian aerial support vessels that scanned the ocean’s surface and subsurface using sonobuoys; U.S. Navy divers; coast guard and research vessels from Canada, France and Norway, some of which were equipped with highly specialized remote-operated vehicles that could work on the ocean’s floor; and assistance from commercial vessels.

A moment of promise came Tuesday when the Coast Guard confirmed reports that banging noises were detected on the seafloor by sonobuoys dropped from Canadian aircraft. Although officials said the origins of the sounds were unclear, they became the target of search efforts.

Sounds described as ‘rhythmic tapping’ on hull heard in search for Titanic tourist sub

The use of remotely operated vehicles in the search for the Titanic tourist submersible carrying five people has yielded no results, the U.S. Coast Guard said.

At the news conference Thursday, Mauger said the underwater noises , which were also observed Wednesday, did not appear to be connected to the sub’s location. The implosion would generate “significant broadband sound” that would have been picked up by the sonobuoys, he said.

Paul Hankins, a salvage expert for the U.S. Navy, said five major pieces of debris from the Titan were found, including the nose cone, which was outside of the pressure hull. Crews also found a large debris field that contained the front-end bell of the pressure hull.

“That was the first indication there was a catastrophic event,” he said. A second, smaller debris field contained the other end of the pressure hull and other wreckage that compromised the totality of the vessel.

How The Times covered the sinking of the Titanic: ‘The annihilated Leviathan’

June 22, 2023

Officials said that the debris was in an area away from the Titanic wreckage in a patch of smooth ocean floor and that there were no signs the vessel collided with the historic ship. The size of the debris field and the vessel’s last-known location are consistent with an “implosion in the water column,” officials said.

Mauger said it is too early to tell when the vessel imploded, and added that listening equipment used throughout the search did not detect any type of catastrophic event.

However, a U.S. government official familiar with the incident but not authorized to speak to the media told The Times that technology designed to listen to the ocean for movement captured the sound of the submersible imploding around the time communications were lost. The news was first reported by the Wall Street Journal, which noted the sound “anomaly.”

When asked whether the victims’ remains might be recovered, Mauger said he did not have an answer, reiterating the implosion and underlining the ocean’s harsh conditions. “This is an incredibly unforgiving environment down there on the seafloor,” he said.

Like the search-and-rescue efforts, the investigation into what happened will be complex, Mauger said, because of the remote location where the event occurred and because it involves the government agencies of several countries whose citizens were aboard.

The composite material used to build the sub and a lack of safety systems will be the focus of a maritime inquiry, which most likely will involve Canadian and U.S. investigators, according to sources familiar with such operations.

Nine vessels were at the location Thursday, and demobilization efforts are expected to take place over the next 24 hours. But remote-operated vehicles will continue to map the ocean floor, Mauger said, and officials are working to develop a timeline of the implosion.

“I know that there’s also a lot of questions about how, why and when did this happen,” Mauger said. “Those are questions that we will collect as much information as we can on now.”

Entertainment & Arts

Commentary: As those aboard the Titan submersible suffered, social media laughed

The exploitative coverage of the death and terror unfolding in real time as the search for the Titan sub continued was compounded by the public’s reaction on TikTok and Twitter.

OceanGate has been running expeditions with “citizen explorers” to the Titanic since 2021 on its Titan sub, according to its website. But as the search unfolded, new details emerged that submersible industry leaders, oceanographers and former employees had long sent warning signs about the Titan.

The Manned Underwater Vehicles Committee at the Marine Technology Society, which advocates for marine technology and resources, wrote a private letter to Rush in 2018 calling on him to allow for a third-party safety review of the Titan. The letter said the marketing for the Titan was, “at minimum, misleading to the public and breaches an industry-wide professional code of conduct we all endeavor to uphold.”

“Our apprehension is that the current experimental approach adopted by OceanGate could result in negative outcomes (from minor to catastrophic) that would have serious consequences for everyone in the industry,” the letter stated.

That same year, David Lochridge, a former OceanGate employee, raised red flags about the Titan in litigation against the company, “particularly OceanGate’s refusal to conduct critical, non-destructive testing of the experimental design of the hull.”

Lochridge, a submersible pilot hired to do quality and safety inspections, said he was terminated for coming forward. He said he disagreed with Rush’s decision to “subject passengers to potential extreme danger in an experimental submersible.” In court papers, OceanGate denied Lochridge’s claims, and the case was later settled.

Rush had criticized what he considered red tape. “One of the jabs that gets thrown at us is: ‘Hey, you aren’t certified.’ But how can you do something new and get certified?” Rush asked in a 2022 article in Maptia. “If the rules exist for how to do it, then you are operating outside of the rules by doing something different.”

Referring to Gen. Douglas MacArthur, he added: “I think it was MacArthur who said, ‘You are remembered for the rules you break.’ We try to break the rules intelligently and intentionally.”

Times staff writers Richard Winton and Noah Goldberg in Los Angeles contributed to this report.

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Alexandra E. Petri is a former Los Angeles Times staff writer who covered trends and breaking news. She previously covered live news at the New York Times. A two-time reporting fellow with the International Women’s Media Foundation, she graduated from Penn State with a degree in journalism and international studies.

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Missing Titanic Submersible ‘Catastrophic Implosion’ Likely Killed 5 Aboard Submersible

Pieces of the missing Titan vessel were found on the ocean floor, about 1,600 feet from the bow of the Titanic, the Coast Guard said. OceanGate Expeditions, the vessel’s operator, said, “Our hearts are with these five souls.”

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Coast Guard Says Debris of Submersible Has Been Found

The u.s. coast guard said parts of the titan submersible found on the ocean floor indicate a “catastrophic implosion” of the vessel..

This morning, an ROV or remote-operated vehicle from the vessel Horizon Arctic discovered the tailcone of the Titan submersible approximately 1,600 feet from the bow of the Titanic on the seafloor. The ROV subsequently found additional debris. In consultation with experts from within the unified command, the debris is consistent with the catastrophic loss of the pressure chamber. Upon this determination, we immediately notified the families. This is a incredibly unforgiving environment down there on the seafloor, and the debris is consistent with a catastrophic implosion of the vessel. This was a incredibly complex case, and we’re still working to develop the details for the timeline involved with this casualty and the response.

Daniel Victor ,  Jesus Jiménez and Nicholas Bogel-Burroughs

After days of searching, no hope of finding survivors remains. Here’s the latest.

The five people aboard the submersible that went missing on Sunday were presumed dead on Thursday, after an international search that gripped much of the world found debris from the vessel near the wreckage of the Titanic. A U.S. Coast Guard official said the debris was “consistent with a catastrophic implosion of the vessel.”

On Sunday, a secret U.S. network of acoustic sensors picked up indications of a possible implosion in the vicinity of the submersible around the time communications with it were lost, a senior Navy official disclosed on Thursday. The search continued because there was no immediate confirmation that the Titan had met a disastrous end, according to a second senior Navy official. Both officials spoke anonymously to discuss operational details.

However, the revelation is likely to raise further questions about a vast, multinational dayslong search and rescue effort that has ended in failure.

Those presumed lost onboard were Stockton Rush, the chief executive of OceanGate, the company that operated the submersible, who was piloting. The four passengers were a British businessman and explorer, Hamish Harding ; a British-Pakistani businessman, Shahzada Dawood, and his teenage son, Suleman ; and a French maritime expert, Paul-Henri Nargeolet , who had been on over 35 dives to the Titanic wreck site. ( Read more about the lives that were lost .)

Here’s what else to know:

A remote-controlled vehicle had located the debris from the Titan, including the submersible’s tail cone, about 1,600 feet from the bow of the Titanic on the ocean floor, according to Admiral Mauger.

Leaders in the submersible craft industry warned for years of possible “catastrophic” problems with the vehicle’s design. They also worried that OceanGate Expeditions had not followed standard certification procedures .

OceanGate has provided tours of the Titanic wreck since 2021 — for a price of up to $250,000 per person — as part of a booming high-risk travel industry . The company has described the trip on its website as a “thrilling and unique travel experience.”

The Titan squeezed five passengers into a tight space with no seats, only a flat floor and a single view port 21 inches in diameter. Here’s a closer look at the craft .

Eric Schmitt

Secret Navy sensors detected a possible implosion around the time the Titan’s communications failed.

The U.S. Navy, using data from a secret network of underwater sensors designed to track hostile submarines, detected “an anomaly consistent with an implosion or explosion” in the vicinity of the Titan submersible at the time communications with the vessel were lost on Sunday, two senior Navy officials said on Thursday.

But with no other indications of a catastrophe, one of the officials said, the search was continued.

The data from the sensors was combined with information from airborne Navy P-8 surveillance planes and sonar buoys on the surface to triangulate the approximate location of the Titan, one of the officials said. The analysis of undersea acoustic data and information about the location of the noise were then passed on to the Coast Guard official in charge of the search, Rear Adm. John Mauger.

Because there was no visual or other conclusive evidence of a catastrophic failure, one of the officials said, it would have been “irresponsible” to immediately assume the five passengers were dead, and the search was ordered to continue even though the outlook appeared grim. Both of the Navy officials spoke on the condition of anonymity to discuss operational details.

It was not immediately clear how widely the Navy’s acoustical analysis was disseminated among the search team, nor why the Navy had not made it public earlier. The Navy’s acoustic analysis from the secret sensor network was first reported by The Wall Street Journal .

Search Vessels Around the Titanic Wreckage

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North Atlantic

the Titanic

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Deep Energy

The Canadian vessel

Horizon Arctic deployed

a remote-operated vehicle

that discovered a debris field.

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floor, approximately

12,500 feet down.

North Atlantic Ocean

that discovered a debris field

containing remains of the Titan.

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William J. Broad

The director and deep-sea explorer James Cameron points to flaws in the Titan submersible’s design.

“We’ve never had an accident like this,” James Cameron, the Oscar-winning director of “Titanic,” said on Thursday.

Mr. Cameron, an expert in submersibles, has dived dozens of times to the ship’s deteriorating hulk and once plunged in a tiny craft of his own design to the bottom of the planet’s deepest recess.

In an interview, Mr. Cameron called the presumed loss of five lives aboard the Titan submersible from the company OceanGate like nothing anyone involved in private ocean exploration had ever seen.

“There’ve never been fatalities at this kind of depth and certainly no implosions,” he said.

An implosion in the deep sea happens when the crushing pressures of the abyss cause a hollow object to collapse violently inward. If the object is big enough to hold five people, Mr. Cameron said in an interview, “it’s going to be an extremely violent event — like 10 cases of dynamite going off.”

In 2012, Mr. Cameron designed and piloted an experimental submersible into a region in the Pacific Ocean called the Challenger Deep. Mr. Cameron had not sought certification of the vessel’s safety by organizations in the maritime industry that provide such services to numerous companies.

“We did that knowingly” because the craft was experimental and its mission scientific, Mr. Cameron said. “I would never design a vehicle to take passengers and not have it certified.”

Mr. Cameron strongly criticized Stockton Rush, the OceanGate chief executive who piloted the submersible when it disappeared Sunday, for never getting his tourist submersible certified as safe . He noted that Mr. Rush called certification an impediment to innovation.

“I agree in principle,” Mr. Cameron said. “But you can’t take that stance when you’re putting paying customers into your submersible — when you have innocent guests who trust you and your statements” about vehicle safety.

As a design weakness in the Titan submersible and a possible cautionary sign to its passengers, Mr. Cameron cited its construction with carbon-fiber composites. The materials are used widely in the aerospace industry because they weigh much less than steel or aluminum, yet pound for pound are stronger and stiffer.

The problem, Mr. Cameron said, is that a carbon-fiber composite has “no strength in compression”— which happens as an undersea vehicle plunges ever deeper into the abyss and faces soaring increases in water pressure. “It’s not what it’s designed for.”

The company, he added, used sensors in the hull of the Titan to assess the status of the carbon-fiber composite hull. In its promotional material , OceanGate pointed to the sensors as an innovative feature for “hull health monitoring.” Early this year, an academic expert described the system as providing the pilot “with enough time to arrest the descent and safely return to surface.”

In contrast to the company, Mr. Cameron called it “a warning system” to let the submersible’s pilot know if “the hull is getting ready to implode.”

Mr. Cameron said the sensor network on the sub’s hull was an inadequate solution to a design he saw as intrinsically flawed.

“It’s not like a light coming on when the oil in your car is low,” he said of the network of hull sensors. “This is different.”

A senior U.S. Navy official said that the Navy had, through acoustic analysis, “detected an anomaly consistent with an implosion or explosion in the general vicinity of where the Titan submersible was operating when communications were lost.” The official said that the identification was “not definitive,” the information was immediately shared with the search effort, and that the decision was made to continue searching to “make every effort to save the lives on board.”

Christina Goldbaum and Emma Bubola

Shahzada Dawood, Executive, 48, and Son, 19, Die Aboard Submersible

Shahzada Dawood, a British Pakistani businessman who was among the five people aboard a submersible journeying deep into the Atlantic to view the Titanic, was killed when the vessel imploded during its descent to the ocean floor, the authorities said Thursday. He was 48.

His 19-year-old son, Suleman, who was with him on the Titan submersible, was also killed.

Mr. Dawood was the vice chairman of Engro Corporation, a business conglomerate headquartered in the Pakistani port city of Karachi that is involved in agriculture, energy and telecommunications. His family is known as one of the wealthiest business families in the country.

His work focused on renewable energy and technology, according to a statement from his family.

Mr. Dawood was born on Feb. 12, 1975, in Rawalpindi, Pakistan. He studied law as an undergraduate at Buckingham University in Britain and later received a master’s degree in global textile marketing from Philadelphia University, now part of Thomas Jefferson University. In 2012, he was named a Young Global Leader by the World Economic Forum.

His son was a business student at the University of Strathclyde in Glasgow and had just completed his first year, a spokesman for the school said. Like his father, he was a fan of science fiction and enjoyed solving Rubik’s Cubes and playing volleyball, according to a statement from Engro.

“The relationship between Shahzada and Suleman was a joy to behold; they were each other’s greatest supporters and cherished a shared passion for adventure and exploration of all the world had to offer them,” the family’s statement said.

The pair’s shared passion for science and discovery, friends and family said, led them to embark on the expedition to the wreck of the Titanic.

Travel and science were “part of his DNA,” said Ahsen Uddin Syed, a friend of the elder Mr. Dawood who used to work with him at Engro.

A lover of “Star Trek” and “Star Wars,” Mr. Dawood was also fond of nature and often traveled to faraway places and shared pictures of his adventures, Mr. Sayed said.

His Instagram profile is like a memory book of his love of travel and nature; it is blanketed with photos of birds, flowers and landscapes, including a sunset in the Kalahari Desert, the ice sheet in Greenland, penguins in the Shetlands and a tiny bird in London with the caption “Dance of the Sugar Plum Fairy.”

“Don’t adventures ever have an end?” Mr. Dawood wrote in a Facebook post last year from a trip to Iceland, quoting Bilbo Baggins from “The Fellowship of the Ring.” “I suppose not. Someone else always has to carry on the story.”

Khalid Mansoor, another former colleague of Mr. Dawood’s, said that Mr. Dawood was a passionate champion of the environment. He was also a trustee at the SETI Institute, an organization devoted to the search for extraterrestrial intelligence.

In his role at Engro, the company statement said, Mr. Dawood advocated “a culture of learning, sustainability and diversity.” He was also involved in his family’s charitable ventures, including the Engro Foundation, which supports small-scale farmers, and the Dawood Foundation, an education-focused nonprofit.

“Shahzada’s and Suleman’s absence will be felt deeply by all those who had the privilege of knowing this pair,” his family’s statement read.

Mr. Dawood is survived by a daughter, Alina, and his wife, Christine.

Salman Masood contributed reporting.

Sam Roberts

Stockton Rush, Pilot of the Titan Submersible, Dies at 61

Stockton Rush, the chief executive and founder of OceanGate and the pilot of the Titan submersible, was declared dead on Thursday after his vessel was found in pieces at the bottom of the Atlantic Ocean, near the rusting wreck of the R.M.S. Titanic. He was 61.

Mr. Rush oversaw finances and engineering for OceanGate, a privately owned tourism and research company based in Everett, Wash., which he founded in 2009. In 2012, he was a founder of the OceanGate Foundation, a nonprofit organization that encouraged technological development to further marine science, history and archaeology.

Mr. Rush first looked skyward for adventure. In 1981, when he was 19, he was believed to be the world’s youngest jet-transport-rated pilot.

If the sky was the limit, though, it was too confining for Mr. Rush.

“I wanted to be the first person on Mars,” he told Fast Company magazine in 2017.

Ineligible for Air Force pilot training because of poor eyesight, he said, he abandoned his dream of becoming an astronaut. Interplanetary travel didn’t seem economically viable in the foreseeable future. But he saw potential in underwater travel, and he said he was willing to take on risk and bend the rules to achieve his goals.

“I mean, if you just want to be safe, don’t get out of bed,” he said in an interview with “CBS News Sunday Morning” last year. “Don’t get in your car. Don’t do anything. At some point, you’re going to take some risk, and it really is a risk-reward question. I think I can do this just as safely by breaking the rules.”

Richard Stockton Rush III was the scion of one of San Francisco’s most famous families. He was descended on his father’s side from two signers of the Declaration of Independence, Benjamin Rush and Richard Stockton.

He was born on March 31, 1962, in San Francisco. His father is chairman of the Peregrine Oil and Gas Company in Burlingame, Calif., and the Natoma Company, which manages apartment and other investment properties in and around Sacramento. His grandfather was the chairman of the shipping company American President Lines. Louise M. Davies Symphony Hall in San Francisco was named for his grandmother.

The Davies family’s inherited wealth was derived from Ralph K. Davies, who began at Standard Oil of California as a 15-year-old office boy and rose to become the youngest director in the company’s history.

Stockton, as Mr. Rush was known, graduated from Phillips Exeter Academy in New Hampshire and earned a Bachelor of Science degree in aerospace engineering from Princeton University in 1984. He received a Master of Business Administration degree from the University of California, Berkeley, Haas School of Business in 1989.

During summer breaks, he served as a DC-8 first officer, flying out of Jeddah, Saudi Arabia, for Overseas National Airways. The year he graduated, he joined the McDonnell Douglas Corporation as a flight test engineer on the F-15 program and was named the company’s representative at Edwards Air Force Base on the APG-63 radar test protocol.

Before founding OceanGate, he served on the board of BlueView Technologies, a sonar developer in Seattle, and as chairman of Remote Control Technologies, which makes remotely operated devices. He was also a trustee of the Museum of Flight in Seattle from 2003 to 2007.

In 1986, he married Wendy Hollings Wei l, a licensed pilot, substitute teacher and account manager for magazine publishing consultants. She became the director of communications for OceanGate.

Her grandfather, Richard Weil Jr., was president of Macy’s New York, and she was the great-great-granddaughter of the retailing magnate Isidor Straus and his wife, Ida, two of the wealthiest people to die when the Titanic sank.

The aging Mr. Straus, a co-owner of Macy’s, refused to board the lifeboat while younger men were being prevented from boarding. Ida Straus, his wife of four decades, declared that she would not leave her husband, and the two were seen standing arm in arm on the Titanic’s deck as the ship went down.

Information on Mr. Rush’s survivors was not immediately available.

In his CBS News interview, Mr. Rush acknowledged that it was prudent while exploring the ocean at depths of thousands of feet to avoid fish nets, overhangs and other hazards. But, he said, safety concerns could also be a drag on a swashbuckling career in which risk paid returns not only in profits but also in unforgettable experiences.

“It really is a life-changing experience, and there aren’t a lot of things like that,” he told Fast Company. “Rather than spend $65,000 to climb Mount Everest, maybe die, and spend a month living in a miserable base camp, you can change your life in a week.”

His trips in the Titan brought him the adventure he craved.

“I wanted to be sort of the Captain Kirk,” he said. “I didn’t want to be the passenger in the back. And I realized that the ocean is the universe. That’s where life is.”

Jacey Fortin

The Coast Guard says it found five major pieces of debris on the ocean floor.

The Titan submersible that vanished in the North Atlantic on Sunday appeared to have suffered a “catastrophic implosion,” the U.S. Coast Guard said on Thursday, and offered its condolences to the families of the five people who were on board.

Debris from the vessel, which vanished while descending to view the wreck of the R.M.S. Titanic, was found on the ocean floor on Thursday morning, about 1,600 feet from the bow of the shipwreck, Rear Admiral John Mauger of the Coast Guard said at a news conference on Thursday afternoon.

The debris was “consistent with catastrophic loss of the pressure chamber” of the submersible, he added.

Asked about the possibility of recovering the bodies of the victims, Admiral Mauger said that he did not have an answer. “This is an incredibly unforgiving environment down there on the sea floor,” he said.

Chances for the survival of the five passengers had begun to look grim by midweek, but rescuers had said that they were holding out hope that the Titan could be out there somewhere.

But on Thursday morning, a remotely operated vehicle discovered a debris field on the ocean bottom. Paul Hankins, a salvage expert for the U.S. Navy, said there were “five major pieces” that appeared to be parts of the Titan, a 22-foot-long vessel owned by OceanGate, including a nose cone, the front end of the pressure hull and the back end of the pressure hull.

It was too early to tell exactly when the vessel imploded, Admiral Mauger said. The implosion “would have generated significant broadband sound down there that the sonar buoys would have picked up,” he added, but listening devices in the area did not hear any signs of such a catastrophic failure.

Some underwater banging noises were picked up by searchers earlier this week, but they did not appear to have had any relation to the submersible, Admiral Mauger said. Previously, the Coast Guard had said that they repositioned their search efforts around where those noises were detected.

“I know there’s a lot of questions about how, why, when this happened,” Admiral Mauger said, adding that the authorities had those same questions. “That’s going to be, I’m sure, the focus of future review,” he said. “Right now, we’re focused on documenting the scene.”

Daniel Victor

The five people on board included the chief executive of the company that operated the submersible, a Guinness World Record-holding explorer, a man who dived to the Titanic more than 35 times, and a father-and-son duo. Read more about the lives that were lost here .

Alex Williams

Hamish Harding, an Explorer Who Knew No Bounds, Dies at 58

Hamish Harding, an aviation tycoon and ardent explorer, made it his quest to probe the heavens as well as the depths, landing him a place in Guinness World Records and ultimately leading him to a fateful plunge to the wreckage of the Titanic some two and a half miles below the surface of the North Atlantic.

The submersible craft in which he was traveling with four others lost contact with its mother ship on Sunday. After a five-day multinational search across an area the size of Massachusetts, the U.S. Coast Guard said Thursday that all five had been killed when the vessel, belonging to OceanGate Expeditions, suffered “a catastrophic implosion.”

Mr. Harding was 58.

Passengers had paid up to $250,000 each for the privilege of plunging nearly 13,000 feet below the surface for a glimpse of the remains of history’s most storied oceanic tragedy. The R.M.S. Titanic hit an iceberg and sank in 1912, four days into its maiden voyage, about 400 miles off Newfoundland. More than 1,500 people died.

At the outset of the tour, Mr. Harding saw the opportunity as an unlikely stroke of good fortune. “Due to the worst winter in Newfoundland in 40 years,” he wrote in a social media post on Saturday, “this mission is likely to be the first and only manned mission to the Titanic in 2023.”

He described himself as a “mission specialist” on the expedition.

Mr. Harding seemed to presage his own fate in a 2021 interview after a record-setting plunge to Challenger Deep, the deepest part of the ocean in the Mariana Trench.

At nearly 36,000 feet below the western Pacific Ocean, deeper than Mount Everest is tall, that four-hour, 15-minute voyage took him nearly three times further down than the Titanic site. That expedition, with the American explorer Victor Vescovo, earned two citations by Guinness World Records, for the longest distance traversed at full ocean depth by a crewed vessel and the longest time spent there on a single dive.

As Esquire Middle East magazine pointed out at the time, only 18 people had ever journeyed to the bottom of the Challenger Deep, as opposed to the 24 astronauts who had orbited or landed on the moon and the thousands who successfully had scaled the peak of Mount Everest.

Mr. Harding knew the risks. “If something goes wrong, you are not coming back,” he told The Week, an Indian newsmagazine. But in business, and in his life of adventure seeking, he seemed to embrace them.

A pilot licensed to fly both business jets and airliners, Mr. Harding started the first regular business jet service to the Antarctic in 2017, in partnership with the luxury Antarctic tourism company White Desert. The service landed its first flight, a Gulfstream G550, on a new ice runway known as Wolf’s Fang.

A lifelong space buff, he traveled to Antarctica in 2016 with Buzz Aldrin, the Apollo 11 astronaut and the second man to walk on the moon. At 86, Mr. Aldrin became the oldest person to reach the South Pole. Four years later, Mr. Harding took a similar journey with his son Giles, who at 12 became the youngest person to accomplish that feat.

In 2019, Mr. Harding set off on another record-setting venture with a former astronaut when he and the former International Space Station commander Col. Terry Virts completed the fastest circumnavigation of the world over both the North and South Poles in a Qatar Executive Gulfstream G650ER long-range business jet.

In June 2022, Mr. Harding finally got to experience the wonder of being an astronaut himself, soaring some 60 miles aboard the New Shepard spacecraft, from Jeff Bezos’s Blue Origin space tourism company, to the edge of outer space.

“Once the liquid hydrogen/oxygen booster rocket gets the capsule to the edge of space, 350,000 feet above the earth,” he said in an interview last year with Business Aviation Magazine , “the sky above you is totally, completely black, even right next to the sun.”

Despite a life of dramatic quests that seemed drawn from boys’ adventure books, Mr. Harding was by nature “an explorer, not a thrill seeker,” Colonel Virts said in an interview with the BBC .

Mr. Harding apparently agreed. In discussing the Challenger Deep mission, he emphasized science, not derring-do.

“As an explorer and adventurer, I want this expedition to contribute to our shared knowledge and understanding of planet earth,” he said in the Esquire interview. He spoke of collecting samples from the ocean floor “that could contain new life forms and may even provide further insights into how life on our planet began.”

“And in searching for signs of human pollution in this remote environment,” he continued, “we hope to aid scientific efforts to protect our oceans and ensure they flourish for millennia to come.”

George Hamish Livingston Harding was born on June 24, 1964, in Hammersmith, London.

He was always drawn to the skies, and beyond. “I was 5 years old when the Apollo landing took place,” he said in the Business Aviation interview. “I vividly remember watching the event on an old black-and-white TV set with my parents in Hong Kong, where I grew up.”

“This event set the tone of my life in a way,” he continued. “We sort of felt that anything was possible after that, and we fully expected there to be package holidays to the moon by now.”

At 13, he became a cadet in the Royal Air Force flying Chipmunk trainer airplanes. He earned his pilot’s license in 1985 while an undergraduate at the University of Cambridge, where he studied chemical engineering and natural sciences.

In the 1990s, he built a career in information technology, rising to managing director of Logica India, a company based in Bangalore. He used the money he made in that industry to found Action Group, a private investment company, in 1999. He started Action Aviation in 2002.

His survivors include his wife, Linda; his sons, Rory and Giles; a stepdaughter, Lauren Marisa Szasz; and a stepson, Brian Szasz.

In the Business Aviation interview, Mr. Harding said that the Titanic dive, initially scheduled for last June, had been delayed because “the submersible was unfortunately damaged on its previous dive.” Instead, that summer he climbed Mount Kilimanjaro in Tanzania with 20 family members and friends.

When asked about the risks of his boundary-pushing ventures, Mr. Harding, who was the chairman of the Middle East chapter of the Explorers Club, said, “My view is that these are all calculated risks and are well understood before we start.”

“I should add that I do not go out seeking these opportunities,” he continued. “People tend to bring them to me, and I keep saying ‘Yes!’”

Anushka Patil

The implosion “would have generated significant broadband sound down there that the sonar buoys would have picked up,” Mauger said. Listening devices in the area, which were dropped Monday, did not hear any signs of such a catastrophic failure, he reported earlier.

Nicholas Bogel-Burroughs

The underwater banging noises that were picked up by the authorities earlier this week do not appear to have had any relation to the site of the submersible’s wreckage. “There doesn’t appear to be any connection between the noises and the location on the sea floor” where the debris was found, Mauger said. Previously, the Coast Guard had said that they repositioned their search efforts around where those noises were detected.

Jesus Jimenez

Asked about the prospect of recovering the bodies of the victims, Mauger said he did not have an answer. “This is an incredibly unforgiving environment down there on the sea floor,” he said.

“I know there’s a lot of questions about how, why, when this happened,” says Admiral Mauger of the U.S. Coast Guard, adding that the authorities have those same questions. “That’s going to be, I’m sure, the focus of future review. Right now, we’re focused on documenting the scene.”

Mauger said it was too early to tell when the vessel imploded. Remote operations will continue on the sea floor, he said.

Where the Titan submersible was found — 1,600 feet from the bow of the Titanic — and the size of the debris field indicates that the vessel imploded, according to Carl Hartsfield, an expert with the Woods Hole Oceanographic Institution. There does not appear to be any indication that it collided with the wreckage.

The authorities found “five major pieces of debris” that indicated they were from the Titan, including a nose cone, the front end of the pressure hull and the back end of the pressure hull, said Paul Hankins, a salvage expert for the U.S. Navy. He said that finding these pieces of debris indicated there was a “catastrophic event.”

Mauger said that officials are still working to come up with a timeline of events.

The debris found today was “consistent with catastrophic loss of the pressure chamber” in the submersible, Mauger said.

Debris from the Titan submersible, including its tail cone, was found on the ocean floor on Thursday morning, about 1,600 feet from the bow of the Titanic, said Rear Admiral John Mauger of the U.S. Coast Guard.

In a few moments, Rear Adm. John Mauger and Capt. Jamie Frederick of the U.S. Coast Guard will provide updates on findings from the sea floor near the Titanic.

The announcement by the company that all five passengers on the submersible are believed to be dead appears to cap an international search that stretched across several days and gripped much of the world. Even as the chances of survival looked grim, rescuers had said they were holding out hope that the Titan could be out there somewhere, hopes that appear to have been dashed by the discovery of debris.

“These men were true explorers who shared a distinct spirit of adventure, and a deep passion for exploring and protecting the world’s oceans,” the company said. “Our hearts are with these five souls and every member of their families during this tragic time.”

OceanGate said in a statement that “we now believe that our CEO Stockton Rush, Shahzada Dawood and his son Suleman Dawood, Hamish Harding, and Paul-Henri Nargeolet, have sadly been lost.”

Jacey Fortin and Eric Schmitt

Here is why the U.S. Coast Guard led the search effort.

It would be a tall order for any agency: finding a submersible vessel that could be more than two miles below the surface of the ocean and hundreds of miles away from land.

But the United States Coast Guard was the best trained and equipped agency for the task, government officials and outside analysts said.

Most Americans are familiar with Coast Guard operations closer to home — from interdicting drug smugglers to assisting recreational boaters — but the maritime force has long been dedicated to search and rescue efforts at sea, including those in international waters.

For the past week, the Coast Guard oversaw an armada of vessels, aircraft and specialists from North America and Europe to find the Titan. International agreements divide the ocean into regions and offer guidance about which nations and agencies take primary responsibility for search and rescue in each. The site of the Titanic wreck is in an area generally assigned to the Coast Guard , even though it is closer to the coast of Newfoundland, Canada, than that of the continental United States.

Beyond that, the U.S. Coast Guard is considered “the premier maritime search and rescue agency in the world,” said Aaron C. Davenport, a senior researcher at the Rand Corporation and 34-year veteran of the service.

Chris Boyer, the executive director of the National Association for Search and Rescue, a nonprofit advocacy group, called the Coast Guard “the best prepared and the best choice, given the circumstances.” He added that while the United States Navy also had underwater rescue capabilities and was participating in the search, it was more focused on defense than on this type of mission.

The disappearance of the Titan, which vanished while descending to view the wreck of the Titanic, presented a unique challenge. The small, privately owned vessel was sealed shut from the outside, and rescuing people from it far below the surface would have been very difficult, Mr. Boyer said.

The Coast Guard handles thousands of rescues every year, but many are comparatively straightforward, like finding a lost fishing boat, according to Robert B. Murrett, a retired Navy vice admiral who is now deputy director of the Syracuse University Institute for Security Policy and Law.

“This one’s a little bit different because of the water depth involved, and the nature of the vehicle,” Professor Murrett said.

Even so, he said, the Coast Guard is adept at coordinating search efforts involving different agencies from different countries.

The search for the Titan was “an incredibly complex operation,” Rear Adm. John Mauger, a Boston-based Coast Guard commander, told reporters on Thursday.

“We were able to mobilize an immense amount of gear to the site in just a really remarkable amount of time, given the fact that we started without any sort of vessel response plan for this or any sort of pre-staged resources,” he said.

Nicholas Bogel-Burroughs ,  Jenny Gross and Anna Betts

OceanGate was warned of potential for ‘catastrophic’ problems with its Titanic mission.

Years before OceanGate’s submersible craft went missing in the Atlantic Ocean with five people onboard, the company faced several warnings as it prepared for its hallmark mission of taking wealthy passengers to tour the Titanic’s wreckage.

In January 2018, the company’s engineering team was about to hand over the craft — named Titan — to a new crew who would be responsible for ensuring the safety of its future passengers. But experts inside and outside the company were beginning to raise concerns.

OceanGate’s director of marine operations, David Lochridge, started working on a report around that time, according to court documents, ultimately producing a scathing document in which he said the craft needed more testing and stressed “the potential dangers to passengers of the Titan as the submersible reached extreme depths.”

Two months later, OceanGate faced similarly dire calls from more than three dozen people — industry leaders, deep-sea explorers and oceanographers — who warned in a letter to its chief executive, Stockton Rush, that the company’s “experimental” approach and its decision to forgo a traditional assessment could lead to potentially “catastrophic” problems with the Titanic mission.

A spokesman for OceanGate declined to comment on the five-year-old critiques from Mr. Lochridge and the industry leaders. Nor did Mr. Lochridge respond to a request for comment.

The United States Coast Guard said on Twitter that a debris field was found in the search area by a remote-operated vehicle. Experts are evaluating the information, the Coast Guard said.

The Coast Guard said it would hold a news conference at 3 p..m. Eastern time in Boston to address findings from a remote-operated vehicle deployed by the Canadian vessel Horizon Arctic on the sea floor near the Titanic.

Jenny Gross

Another remotely controlled deep-sea vehicle is en route to the search area.

A remotely operated vehicle that can reach 6,000 meters (about 19,700 feet) below the surface of the ocean was en route to join the search for the missing Titan submersible in the North Atlantic, the Explorers Club, a New York-based organization that counts two of the missing passengers among its members, said on Thursday.

The vehicle, owned by Magellan, a deepwater seabed-mapping company, was being transported from Britain to St. John’s, Newfoundland, where it was expected to land early afternoon local time on Thursday. Two other remotely controlled vehicles are already at the search site around the wreckage of the Titanic. The Titan was on a voyage to visit the shipwreck when it disappeared on Sunday.

Magellan’s vehicle has been to the wreckage of the Titanic — which sits at a depth of about 12,500 feet — more than any other vehicle and has mapped the site , including the surrounding debris, Richard Garriott de Cayeux, president of the Explorers Club, said in a statement. It has manipulator arms that can attach lifting cables directly to a submersible, and “may prove invaluable” to the ongoing search and rescue efforts, Mr. Garriott de Cayeux said. Magellan did not respond to a request for comment.

Mr. Garriott de Cayeux said that other club members with experience diving to similar depths had a sense of what the passengers on the Titan may be facing.

“While the planned life support supply depletes, we believe crew conservation and the near freezing temperatures could prolong life support by some time and the crew knows this,” he said in the statement.

“While the situation is very difficult, we can all be grateful and hopeful as the very best people are on the job,” Mr. Garriott de Cayeux said.

Derrick Bryson Taylor

The University of Strathclyde in Glasgow confirmed on Thursday that Suleman Dawood, the 19-year-old man who is on board the missing submersible along with his father, is a business student at the school. He recently completed his first year, a spokesman for the university said.

“We are deeply concerned about Suleman, his father and the others involved in this incident,” the spokesman said. “Our thoughts are with their families and loved ones and we continue to hope for a positive outcome.”

In discussing the amount of oxygen left on the Titan, Rear Adm. John Mauger of the U.S. Coast Guard said on Thursday that “people’s will to live really needs to be accounted for, as well.”

Rear Adm. John Mauger of the U.S. Coast Guard speaks to TODAY about the latest efforts to rescue the five people on board the missing submersible Titan as it runs low on oxygen. “People’s will to live really needs to be accounted for, as well,” he says. pic.twitter.com/6FJ3w1Z0Ty — TODAY (@TODAYshow) June 22, 2023

The search for the missing submersible was well underway as of Thursday morning. The Canadian vessel Horizon Arctic has deployed a remotely operated vehicle that has reached the sea floor, the U.S. Coast Guard said on Twitter.

The French vessel Atalante is also preparing to deploy its remotely operated vehicle.

• International

June 22, 2023 - Missing Titanic sub crew killed after 'catastrophic implosion'

By Helen Regan , Adam Renton, Rob Picheta , Aditi Sangal , Elise Hammond , Matt Meyer , Tori B. Powell and Maureen Chowdhury , CNN

Search teams are racing to find the sub before oxygen runs out. Here's what you need to know

The search for the missing Titan submersible is now in a critical stage, as rescue teams race to locate the vessel before oxygen supplies run out.

The submersible begins each trip with 96 hours of life support and has been missing since Sunday, setting up Thursday morning as a key target for finding the vessel and those on board. Officials fear the craft’s oxygen supply could run out this morning.

Medical personnel and search vessels with extra capabilities headed to the scene on Thursday, with time running out.

If you're just reading in now, here's the latest news this morning:

• "New capabilities" in search: New, high-tech vessels and medical personnel are moving to the search site as rescue efforts reach a pivotal moment, a Coast Guard official has said. That includes a Magellan ROV, a uniquely equipped vessel whose use was pushed for by the Explorers Club group early on in the search.
• Search vehicle reaches sea floor: A remotely operated vehicle “has reached the sea floor” and has begun searching for the missing Titanic submersible early Thursday morning, according to the US Coast Guard. It added that “The French vessel L'Atalante is preparing their ROV to enter the water.”
• Concern over low-tech features: A former OceanGate subcontractor who worked on the development of the Titan submersible said while  the game controller to operate the vessel may seem low-tech, it was actually by design. OceanGate tried to use as many “off-the-shelf" items as possible to cut down on research and development as well as costs, Doug Virnig told CNN Wednesday.
• How the sub went missing:  The vessel, operated by OceanGate Expeditions, began its two-hour descent to the wreck of the Titanic on Sunday morning. (See how deep the wreckage is here. ) It lost contact with the Polar Prince, the support ship that transported the craft to the location in the North Atlantic, 1 hour and 45 minutes into its descent, officials said. Search operations began later that day. It’s still not clear what happened to the submersible, why it lost contact, and how close it was to the Titanic when it went missing.
• What we know about the noises : Banging noises were identified by Canadian aircraft on Tuesday and Wednesday morning. Remotely operated vehicle (ROV) equipment was relocated to where the noises were detected, according to Capt. Jamie Frederick, the response coordinator for the First Coast Guard District. But searches in the area "yielded negative results," he said. Data from the plane that identified the noises was sent to the US Navy, but has so far been inconclusive, Frederick said, adding that the Coast Guard does not know what the sounds were.
• What it could be like onboard: Officials believe the five people on board have "limited rations" of food and water. Ret. Navy Capt. David Marquet, a former submarine captain, told CNN the near-freezing water at that depth is probably making the situation very uncomfortable. "There's frost on the inside of the parts of the submarine. They're all huddled together trying to conserve their body heat. They're running low on oxygen and they're exhaling carbon dioxide," he said.

British submariner and equipment are assisting search efforts for missing sub

From CNN's Sharon Braithwaite and Luke McGee in London

A British navy submariner and equipment from a UK firm will help the search for the missing Titan submersible , a Downing Street spokesperson said Thursday.

"At the request of US Coastguard, the UK has embedded a Royal Navy submariner to assist the search and rescue effort for the missing submarine," the spokesperson said, according to UK's PA Media on Thursday.

Lt. Commander Richard Kantharia "has significant knowledge of submarine warfare and dived operations and so he will obviously be bringing that experience to the search and rescue team," the spokesperson added. The officer was on exchange with the US Navy and has been seconded to the search and rescue team, according to PA.

A British C-17 aircraft will transport “specialist commercial equipment” provided by deep sea-mapping company Magellan to St. John’s to assist with the search-and-rescue effort, PA also reported.

A spokesperson for Britain’s Royal Air Force told CNN on Thursday: “Following a request overnight from the lead organisation, RAF air transport assets are assisting with the movement of additional commercial equipment. ”

Along with the C-17, an A400 aircraft is transporting specialist loaders and crew, the air force said. Both aircraft departed RAF Lossiemouth in Scotland for Canada earlier on Thursday. 

The missing submarine is carrying five people — a British adventurer, a French diver, a Pakistani father and son and the founder of OceanGate Expeditions, the company that operated the tour to the Titanic wreckage.

A massive search operation is underway in an area twice the size of Connecticut for the submersible that went missing Sunday —as officials fear the craft’s oxygen supply could run out this morning.

From Catherine Nicholls in London

Passengers on the missing sub would know to "take it easy" to save oxygen, friend of two onboard says

A friend of two passengers on board the missing submersible has said he still has hope the vessel will be found.

“I know that the adventurers on board are experienced, very experienced,” said Per Wimmer, an adventurer who was previously signed up for two canceled trips on the Titan.

Wimmer is an acquaintance of Hamish Harding and Stockton Rush, two of the five people on the missing vessel. He said Harding, a British businessman and trained jet pilot, and Rush, the CEO and founder of the company leading the voyage, are both very experienced adventurers who would know to conserve oxygen.

Wimmer said that the presence of OceanGate CEO Stockton Rush on board the vessel is helpful, as he knows “the ins and outs of how this submersible works.”

Officials fear the sub's oxygen supply would run out on Thursday, meaning the search is in a critical phase.

Medical personnel to join Titan search on Thursday, official says

From CNN's Kristina Sgueglia

New, high-tech vessels and medical personnel are moving to the search site as rescue efforts reach a pivotal moment, a Coast Guard official has said.

Rear Adm. John Mauger told NBC on Thursday that the search and rescue mission will continue with "new capability" arriving.

That includes a Magellan ROV, a uniquely equipped vessel whose use was pushed for by the Explorers Club group early on in the search. It has been questioned whether the Magellan should have been sent to the site much earlier in the search operation.

Mauger said they have been “overwhelmed by all the support that’s been provided by the international community” adding “we made some decisions to prioritize based on gear that was closest to the site and could get there.”

Mauger also said that medical personnel who have “deep sea medical expertise” are moving to the site, and a hyperbaric chamber is also en route.

“We continue to find in particularly complex cases that people's will to live really needs to be accounted for as well, and so we're continuing to search and proceed with rescue efforts by bringing this new capability online this morning,” he told NBC.

Search vehicle reaches sea floor as teams race to find sub

From CNN's Gloria Pazmino

A remote operated vehicle “has reached the sea floor” and has begun searching for the missing Titanic submersible early Thursday morning, according to the US Coast Guard.

“The Canadian vessel Horizon Arctic has deployed an ROV that has reached the sea floor and began its search for the missing sub,” the US Coast Guard tweeted .

It added that “The French vessel L'Atalante is preparing their ROV to enter the water.”

Titan submersible "is designed to come back up" after 24 hours, investor says

From CNN's Emma Tucker

The Titan submersible that went missing en route to the Titanic wreck was designed to return to the surface after 24 hours, according to Aaron Newman, an investor in OceanGate who visited the site on the vessel in 2021.

Titan is held underwater by ballast — heavy weights that helps with a vessel’s stability — built to be automatically released after 24 hours to send the sub to the surface, Newman said. 

Crew members are told they can release the ballast by rocking the ship or use a pneumatic pump to knock the weights free, Newman said. If all else fails, he said, the lines securing the ballast are designed to fall apart after 24 hours to automatically send it back to the ocean’s surface. 

Titan’s thrusters are powered by an external electrical system, while an internal system powers communications and a heater, Newman said.

Separately, Discovery Channel host Josh Gates , who went on a test dive on the Titan in 2021, said he learned that year that there were four ways for the vessel to shed weight and bring it back up to the surface in the case of an emergency.

There is a computer-controlled weight release, a manual-valve system that injects air into exterior ballast containers, a hydraulic system to drop weights and an ability to detach from the sled attached to the submersible and help move the vessel back to the surface.

Read more here .

"We need a miracle," Titanic exploration expert says

From CNN's Rob Picheta

Teams searching for the missing submersible “need a miracle” to find it before oxygen supplies run out, a leading deep-sea explorer told CNN.

“The good news there is that miracles can happen,” added David Gallo, the senior adviser for Strategic Initiatives at RMS Titanic Inc.

“We have to not think about the clock all the time, and just go as fast as possible,” Gallo told CNN’s “This Morning.”  “It’s tough because the oceans are pitch black — you can only use sound to image effectively, and you’ve got to be pretty much on top of the object to actually see it,” he said.

Gallo is a colleague of French diver Paul-Henri Nargeolet, one of the passengers on the sub. He said that Nargeolet, an experienced explorer, would ensure that the banging noises picked up by search teams “cannot be interpreted as anything but human,” if indeed the noises did come from inside the vessel.

Thursday morning was identified as a critical period for the search operation, with oxygen supplies on board the sub understood to be rapidly dwindling.

Future research at the Titanic wreck is unlikely after the Titan went missing, expert says

The chances of future research being carried out at the Titanic wreck have diminished after the Titan sub went missing on its journey to the site, an expert has said.

David Scott-Beddard, the CEO of Titanic exhibition company White Star Memories Ltd, told CNN that the tragedy has “without a doubt” impacted opportunities to visit and study the wreckage.

“The chances of any future research being carried out on the wreck of Titanic is extremely slim. Probably not in my lifetime,” Scott-Beddard told CNN’s “Early Start.” 

“I imagine there will be an inquiry no doubt after this disaster, and much more stringent rules and regulations will be put in place,” he said.

Concerns have been raised about the low-tech and controversial features of the OceanGate vessel . A former OceanGate subcontractor who worked on the development of the submersible Titan has said some of the construction materials and design choices were considered "controversial" at the time it was being made in 2018.

Enduring appeal: Several research trips were made to the Titanic site after it was discovered in 1985, and many of its artifacts have been controversially recovered and displayed around the world since. But commercial trips like those offered by OceanGate are a far more recent phenomenon. 

“Titanic is one of those unreachable, unattainable things for most of us, unless you’ve been working in research and have been lucky enough to dive to the wreck in the past,” Scott-Beddard said, explaining the enduring appeal of the ship. “She sits majestically on the sea bed; (it’s) incredibly rare for a ship that sunk to be sitting upright.”

The ocean's depths are so elusive that only 20% of the seafloor has been mapped

From CNN's Jackie Wattles, Ashley Strickland and Katie Hunt

The submersible vehicle currently  lost at sea  is part of a relatively new effort enabling tourists and other paying customers to explore the depths of the ocean, the vast majority of which has never been seen by human eyes.

Though people have been exploring the ocean’s surface for tens of thousands of years, only about 20% of the seafloor has been mapped, according to 2022 figures from  the National Oceanic and Atmospheric Administration.

Researchers often say that traveling to space is easier than plunging to the bottom of the ocean. While 12 astronauts have spent a collective total of 300 hours on the lunar surface, only three people have spent around three hours exploring Challenger Deep, the deepest known point of Earth’s seabed, according to the  Woods Hole Oceanographic Institution .

There’s a reason deep-sea exploration by humans has been so limited:  Traveling to the ocean’s depths means entering a realm with enormous levels of pressure the farther you descend — a high-risk endeavor. The environment is dark with almost no visibility. The cold temperatures are extreme.

Many of the factors that could make the vessel so difficult to locate and recover are also the reasons a comprehensive exploration of the ocean floor remains elusive.

“Aquatic search is pretty tricky, as the ocean floor is a lot more rugged than on land,” said Dr. Jamie Pringle, a reader in forensic geoscience at England’s Keele University, in a statement.

Read the full story here .

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How Could This Have Happened?

Five people died in a submersible that was only loosely regulated and may not have been inspected for safety.

The dreadful saga of the missing Titanic submersible is finally drawing to a close. On Sunday, the vessel, called the Titan, was supposed to take five people on an hours-long, 12,500-foot-deep journey to the wreckage of the Titanic, which rests at the bottom of the Atlantic Ocean. Instead, less than two hours into the tour, the submersible lost contact with its support ship. At a press conference this afternoon, the U.S. Coast Guard announced that a remotely operated vehicle had encountered the debris of the Titan, which suggested that the passengers were killed in “a catastrophic implosion of the vessel.”

The debris of the submersible was discovered on the seafloor, about 1,600 feet from the bow of the Titanic. For days, rescue workers had operated on the hopeful assumption that the submersible might still be intact, and that its occupants could be alive, even as their oxygen reserves began to run out. The news brings a difficult end to days of frenzied search-and-rescue efforts involving military and research vessels from multiple countries. It also underscores an important question that became more salient with each minute of the search: How, exactly, could this have happened?

In the days since the Titan lost contact with the outside world, reporters have uncovered many details about the submersible and its operator, OceanGate, a research-and-tourism company that has offered such Titanic excursions since 2021. David Pogue, a CBS journalist who traveled on the submersible last year, called the sub “janky” for its scraped-together parts, such as construction pipes serving as ballast. It had no fancy control panels, only a single button that initiates the descent, like pressing “Down” on an elevator, and was piloted using a $30 game controller. The Washington Post ’s Gene Park pointed out that such controllers are actually not so unusual for certain kinds of vehicles, even those used by the U.S. military—but the Titan’s controller appears to have been an older model, and it relied on a good Bluetooth connection, which is not the case for military craft.

And, most concerning of all, it is not clear whether the Titan was inspected for safety by outside experts. In 2018, dozens of industry experts warned OceanGate that if the company didn’t put the Titan through an independent safety assessment, its Titanic expeditions could face potentially “catastrophic” problems. Even OceanGate’s own director of marine operations was at the time worried about “the potential dangers to passengers of the Titan as the submersible reached extreme depths,” The New York Times reported this week. At least one previous dive had problems too: According to Pogue , a Titan expedition last year got lost on the seafloor for about five hours.

From the May 2004 issue: The sinking of the Estonia

Throughout it all, OceanGate and its CEO, Stockton Rush—who was among the Titan’s lost passengers—declared that innovation was more important than critics’ concerns. In a 2019 blog post , the company said it didn’t want to get the Titan certified for safety standards in part because “bringing an outside entity up to speed on every innovation before it is put into real-world testing is anathema to rapid innovation.” In interviews with Pogue, Rush said , “I think I can do this just as safely while breaking the rules” and “at some point, safety is just pure waste.” There’s no evidence that the Titan was subjected to strict regulation , either. As New York magazine has reported, submersibles are not subject to international maritime law. The United States has its own rules, but they didn’t technically apply, because the Titan launched from a Canadian ship in international waters.

(OceanGate did not respond to a request for comment about Rush’s remarks or about safety concerns regarding the Titan, nor did the company immediately respond to a request for comment about today’s announcement from the Coast Guard.)

Rush repeatedly hyped the Titan’s creative design, including a system that he said could monitor the health of its hull in real time. He and other investors spent tens of millions of dollars on OceanGate, including developing that hull, which needed to withstand the extreme pressures at the bottom of the ocean. Rush asked NASA for help, and the agency agreed , under an arrangement that allows the space agency to work with outside organizations on cutting-edge research. But NASA only “consulted on materials and manufacturing processes for the submersible,” an agency spokesperson said this week, and “did not conduct testing and manufacturing via its workforce or facilities, which was done elsewhere by OceanGate.”

Rush has said that he drew inspiration for his deep-sea adventures from the growing space-tourism industry, which has recently begun offering short jaunts beyond Earth’s atmosphere, as well as journeys to the International Space Station. There are certainly parallels between a submersible at sea and a capsule in space: Help is far away, and the environment is terrifyingly hostile. The bottom of the sea, in this case, seems even more isolated and perilous ; radio transmissions can travel through space for many light-years, but they cannot travel underwater.

Read: The Titanic sub and the draw of extreme tourism

The big difference is that space-tourism companies publicly make a big deal out of the safety measures of their craft. What they are doing privately is a different question; in 2021, for example, a Blue Origin whistleblower claimed that the company had prioritized speed over safety. (Blue Origin responded to the claims, saying its rocket was “the safest space vehicle ever designed or built.”) But those companies know that their customers have seen pictures and footage of deadly shuttle disasters, and so take pains to reassure them, even as they ask them to sign waivers that likely outline their own brand of danger in great detail. In comparison, OceanGate’s public approach to safety seems almost cavalier, less like modern-day space tourism and more reminiscent of the rushed and occasionally ramshackle efforts of the space race.

Coast Guard officials said that they are still “focused on documenting the scene” with remotely operated equipment. They don’t yet know what caused the Titan to implode, or what regulations might have prevented the disaster. The search-and-rescue effort has now become a gruesome investigation, delving into yet another mystery in a place already steeped in it.

Watch CBS News

What we know about the tourist sub that disappeared on an expedition to the Titanic

By Emily Mae Czachor

Updated on: June 23, 2023 / 11:35 PM EDT / CBS News

Five people on board the tourist  submarine that disappeared  on an expedition to explore the  Titanic shipwreck  over the weekend did not survive a "catastrophic loss of the pressure chamber," officials said Thursday.

The announcement came after the U.S. Coast Guard said the  massive search  underway in the North Atlantic had located a debris field on the sea floor, which was confirmed to be pieces of the missing sub .

"The debris field is consistent with a catastrophic implosion of the vessel," Rear Adm. John Mauger of the Coast Guard said at a briefing, offering "deepest condolences to the families." A spokesperson for OceanGate Expeditions, the company behind the voyage, told reporters that the passengers, including OceanGate CEO Stockton Rush, "have sadly been lost."

Here's what we know so far about the submersible craft and what led up to this point.

What happened?

A five-person crew on a submersible named Titan, owned by OceanGate Expeditions, submerged on a dive to the Titanic wreckage site Sunday morning, and the crew of the Polar Prince research ship lost contact with the sub about an hour and 45 minutes later, the Coast Guard   said . 

The Coast Guard first alerted mariners about the missing sub Sunday night, saying a "21 foot submarine" with a white hull was overdue and giving its last known position. "VESSELS IN VICINITY REQUESTED TO KEEP A SHARP LOOKOUT, ASSIST IF POSSIBLE," the alert message read.

The sub was lost in an area about 900 miles east of Cape Cod, in the North Atlantic, in water with a depth of about 13,000 feet, which is about level with the depth of the Titanic wreck . Amid growing concern about its  dwindling supply of breathable air , search and rescue efforts by a unified command composed of several international agencies ramped up accordingly.

The five people aboard included an operator — later identified as Stockton Rush, the CEO of OceanGate Expeditions — and four mission specialists, a term the company uses for its passengers, who paid up to $250,000 for a seat.

For days, the fate of the sub and its passengers was a mystery.

But after the debris was found, a U.S. Navy official said the Navy had detected "an acoustic anomaly consistent with an implosion" shortly after the sub lost contact with the surface Sunday, CBS News national security correspondent David Martin reported. The information was relayed to the Coast Guard, which used it to narrow the radius of the search area, the official said.

Such an implosion, under the intense pressure of the depths of the sea , would have destroyed the vessel almost instantly, experts explained.

"in a fraction of a second, it's gone," Will Kohnen, chairman of the professional group the Marine Technology Society Submarine Committee, told the Reuters news agency. 

"It implodes inwards in a matter of a thousandth of a second," Kohnen said. "And it's probably a mercy, because that was probably a kinder end than the unbelievably difficult situation of being four days in a cold, dark and confined space. So, this would have happened very quickly. I don't think anybody even had the time to realize what happened." 

The Coast Guard is leading the investigation into the incident, and the National Transportation Safety Board  said Friday  it will assist.   

Who were the passengers aboard the sub? 

CBS News confirmed that the five people aboard the submersible were  Hamish Harding , a 59-year-old British billionaire, business owner and explorer; British-Pakistani businessman Shahzada Dawood and his son, Suleman; French explorer Paul-Henri Nargeolet, who had made multiple dives over the years to explore the Titanic; and Stockton Rush, the CEO of OceanGate Expeditions, who was serving as pilot.

Just ahead of the Coast Guard briefing Thursday afternoon, a statement issued by OceanGate spokesperson Andrew Von Kerens offered condolences to the families of the Titan crew and recognized that all five people on board the submersible were believed to be dead.

"These men were true explorers who shared a distinct spirit of adventure, and a deep passion for exploring and protecting the world's oceans," the company said in the statement. "Our hearts are with these five souls and every member of their families during this tragic time. We grieve the loss of life and joy they brought to everyone they knew."

When the Coast Guard confirmed the sub's likely implosion on Thursday, Mauger said they were communicating with consulates general in both the U.K. and France.

The Dawood family, of the large Pakistan-based global business conglomerate Dawood Group, issued a statement Tuesday confirming their family members were on the expedition.

"Please continue to keep the departed souls and our family in your prayers during this difficult time of mourning," the Hussain and Kulsum Dawood family said Thursday in a statement through the Dawood Foundation. "We are truly grateful to all those involved in the rescue operations. ... The immense love and support we receive continues to help us endure this unimaginable loss."

Nargeolet, a renowned French explorer and former diver for the French Navy who was part of the first expedition to visit the Titanic wreck in 1987, was returning for another dive aboard the Titan submersible. 

In a  Facebook  post on Monday, Rory Golden, an explorer who became the first Irish diver to visit the Titanic wreckage in 2000, said he was part of the voyage but was not on the submersible that went missing.

Search and rescue efforts

Authorities  said  early Thursday morning that a Canadian vessel, Horizon Arctic, had deployed a  remotely operated underwater vehicle that reached the sea floor . The ROV ultimately located what the Coast Guard originally described as a debris field on the sea floor, which included identifiable pieces of the sub, authorities confirmed that afternoon.

"This morning, an ROV, or remote operated vehicle, from the vessel Horizon Arctic, discovered the tail cone of the Titan submersible approximately 1,600 feet from the bow of the Titanic on the sea floor," said Mauger at a news briefing. "The ROV subsequently found additional debris. In consultation with experts from within the unified command, the debris is consistent with the catastrophic loss of the pressure chamber."

"Upon this determination, we immediately notified the families," he added. "On behalf of the United States Coast Guard and the entire unified command, I offer my deepest condolences to the families. I can only imagine what this has been like for them and I hope that this discovery provides some solace during this difficult time."

Mauger said authorities were "still working to develop the details for the timeline involved with this casualty and the response," and referenced the "incredibly complex operating environment along the sea floor, over two miles beneath the surface."

Paul Hankins, an undersea expert for the U.S. Navy, explained during the news conference that crews discovered "five different major pieces of debris that told us that it was the remains of the Titan." These pieces included, initially, the nose cone, which was outside of the pressure hull. 

"We then found a large debris field," Hankins said. "Within that large debris field, we found the front end bell of the pressure hull. That was our first indication that there was a catastrophic event."

A second, smaller debris field was located shortly after, and the debris found there "comprised the totality of that pressure vessel," Hankins said. 

"The debris field is consistent with a catastrophic implosion of the vessel," he said, adding that the team will continue to map the debris field area.

Asked by a reporter what the prospects were for recovering the passengers, Mauger said, "This is an incredibly unforgiving environment down there on the sea floor, and the debris is consistent with a catastrophic implosion of the vessel. So we'll continue to work and continue to search the area down there, but I don't have an answer for prospects at this time."

Discovering the Titan debris came after multiple agencies from the U.S. and Canada spent days scouring thousands of square miles of open ocean in search of the missing sub.

The U.S. Coast Guard announced Wednesday that  underwater noises were detected  in the search area and that searches involving ROVs were  focusing on the area where the noises were heard .

On Wednesday, three more vessels had arrived to join the search, including one with side-scan sonar capabilities designed to create images of large sections of the sea floor, the Coast Guard said in a  tweet . That vessel began conducting search patterns alongside at least two others, as multiple military and other agencies worked together under a unified command. 

Frederick said Wednesday there were five "surface assets" involved in the search , and another five were expected to join the operation within the next 24 to 48 hours. He said the team also had two ROVs "actively searching," with several more due to arrive to join the search Thursday.

The Coast Guard  said  it had C-130 aircraft searching for the sub, and that the Rescue Coordination Center Halifax was assisting with a P-8 Poseidon aircraft, which has underwater detection capabilities. Canadian P-3s were also involved in the operation and deployed sonar buoys.

Just after midnight Wednesday, officials said  aircraft had detected underwater noises  in the search area, and underwater search operations were relocated as a result, though the origin of the noises remained unknown. The sounds were picked up several times Tuesday night and Wednesday morning, according to the Coast Guard. 

"With respect to the noises, specifically, we don't know what they are, to be frank with you," Frederick said. "The P-3 detected noises, that's why they're up there, that's why they're doing what they're doing, that's why there are sonar buoys in the water."

News of the vanished submersible and subsequent rescue mission originally broke Monday morning. At the time, Lt. Jordan Hart of the Coast Guard in Boston told CBS News that personnel there were leading the rescue mission, and focusing on waters off Newfoundland in eastern Canada. 

The Boston Regional Coordination Center was managing the rescue operation, as the location of the Titanic shipwreck falls within the Boston coordination center's territory, according to a  map  of jurisdictions along the East Coast of North America.

That combined search area grew to about twice the size of the state of Connecticut, and the subsurface search extended down as far as 2 and a half miles deep, Frederick said, stressing that the search and rescue teams were dealing with an incredibly complex set of circumstances.

"We also have to factor in the ever-changing weather conditions, currents and sea states that expand the search area every hour," he said earlier in the week. "There's an enormous complexity associated with this case due to the location being so far offshore and the coordination between multiple agencies and nations. We greatly appreciate the outpouring of support and offers to provide additional equipment."

What caused the noises?

Frederick acknowledged that the sounds detected underwater by Canadian aircraft could have been caused by multiple sources. 

Following the discovery of the sub debris on the sea floor, a U.S. Navy source told CBS News that the implosion would be inconsistent with banging noises heard at 30-minute intervals. Those noises, the official said, are now assessed as having come from other ships in the area.

Carl Hartsfield, an expert in underwater acoustics and the director of the Woods Hole Oceanographic Institution, which is on-site at the search area as a consultant, explained that it can be challenging to differentiate between "human sounds" and "nature sounds" coming from beneath the surface.

"The ocean is a very complex place, obviously, human sounds, nature sounds, and it's very difficult to discern what the sources of those noises are at times," Hartsfield said. 

Before the sub was found, Chris Roman, an associate professor of oceanography at the University of Rhode Island, told CBS News that, technically, it was possible that sounds from inside a submersible could have been detected, but that wasn't the only potential source of the noise.

"Sound travels very efficiently underwater. If people were intentionally making noises within the sub, it's very likely they could be detected with a sound buoy, and that position can be translated into a new search area," Roman said. But he also noted that, as Frederick mentioned in his briefing, "there's a lot of other things in the ocean that make noises."

The submarine

The unique submersible craft that disappeared was owned by OceanGate Expeditions , a company that deploys manned submarines for deep sea exploration and has in the past advertised this particular sub's voyages to carry tourists down to the wreckage of the RMS Titanic for $250,000 per seat. 

More than a century after the Titanic sank in April 1912, the wreck lies on the ocean floor about 400 miles southeast of the Newfoundland coast. 

OceanGate said recently on its website and on social media that its expedition to the shipwreck was "underway," describing the seven-night trip as a "chance to step outside of everyday life and discover something truly extraordinary." In addition to one ongoing expedition, the company had planned two others for the summer of next year, according to the site. 

Because of the sub's oxygen capacity, it can only be fully submerged for a portion of the weeklong voyage. The sub has emergency oxygen and a 96-hour sustainment capability if there's an emergency aboard, Mauger said.

In a statement Monday after news broke of the missing sub, OceanGate confirmed the missing submersible was theirs and that a rescue operation had been launched to find and recover it. The company said it was "exploring and mobilizing all options to bring the crew back safely." 

"For some time, we have been unable to establish communications with one of our submersible exploration vehicles which is currently visiting the wreck site of the Titanic," said Andrew Von Kerens, a spokesperson for OceanGate. "We pray for the safe return of the crew and passengers, and we will provide updates as they are available."

Inside the Titan

Dubbed the Titan, OceanGate's deep sea vessel, was said to be the only five-person submersible in the world with the capabilities to reach the Titanic's depth, nearly 2 and a half miles beneath the ocean's surface, CBS "Sunday Mornings" correspondent David Pogue reported last year. 

BBC News reported that the vessel typically carries a pilot, three paying guests and another person described as a "content expert" by the company.  OceanGate's site says the Titan, weighing around 23,000 pounds, has the ability to reach depths of up to 4,000 meters — over 13,000 feet — and has about 96 hours of life support for a crew of five people.

Last summer, Pogue accompanied the Titan crew on the journey from Newfoundland to the site where the Titanic as lost. Several dive attempts had to be canceled when weather conditions indicated it may not be safe. At the time, he described the Titan as a one-of-a-kind submersible craft made from thick carbon fiber and coated on both ends by a dome of titanium. 

In 2018, a former employee of OceanGate Expeditions, submersible pilot David Lochridge, voiced concerns about the safety of the Titanic tour sub and filed a lawsuit against the company . 

Lochridge, who was fired by OceanGate and sued by the company for allegedly disclosing confidential information in a whistleblower complaint to the Occupational Safety and Health Administration, said in a court filing that the Titan would carry passengers as deep as 4,000 meters even though that depth had never been reached in a sub with its type of carbon fiber hull. According to his claim, he learned the vessel was built to withstand a certified pressure of 1,300 meters, although OceanGate planned to take passengers to 4,000 meters.  

Lochridge was not the only skeptic. The same year his complaint was filed, other industry leaders approached OceanGate with questions about the safety of its submersible. William Kohnen, president and CEO of Hydrospace Group, outlined his concerns in a 2018 letter to OceanGate, originally published by The New York Times, that warned of potentially "catastrophic" issues with the "experimental" sub, which was not certified. Kohnen told CBS News on Wednesday that although he did not send it, the letter was leaked to OceanGate and prompted the company to "amend a number of details that made sure the public knew" the submersible had not received its certification.

"The letter to Oceangate was meant as a professional courtesy to the CEO expressing industry concerns that the company was not following a traditional classification route for the certification of the submersible," Kohnen said. "The industry operates along an established and dynamic set of safety regulations and protocols that have served the submersible industry worldwide."

Ahead of his planned dive last summer, Pogue recalled signing paperwork that read, in part, "This experimental vessel has not been approved or certified by any regulatory body, and could result in physical injury, emotional trauma, or death." 

Space inside the submarine was similar to the interior of a minivan, and, with just one button and a video game controller used to steer it, the vessel "seemed improvised, with off-the-shelf components," Pogue said.

On his voyage, the  sub was lost for a few hours , Pogue said.

"There's no GPS underwater, so the surface ship is supposed to guide the sub to the shipwreck by sending text messages," he reported at the time. "But on this dive, communications somehow broke down."

You may remember that the @OceanGateExped sub to the #Titanic got lost for a few hours LAST summer, too, when I was aboard…Here’s the relevant part of that story. https://t.co/7FhcMs0oeH pic.twitter.com/ClaNg5nzj8 — David Pogue (@Pogue) June 19, 2023

Were conditions right for the dive?

G. Michael Harris, founder of RMS Titanic, Inc. — a company that salvages artifacts from the Titanic wreckage — told CBS News on Tuesday evening that Titanic expeditions are generally conducted within a "three-month weather window" between the end of June and September, when the ocean waters are at their calmest.

Harris, who has led several expeditions to the wreckage site, questioned why the Titan's dive was conducted as early as Sunday.

"Right now, it's really early in the season. I'm not sure why OceanGate went out this soon," Harris said.

Harris also noted that when he conducts diving expeditions, he uses a transponder system, something that he believed the Titan likely did not have.

"It's a net that we navigate in so that we know where we are at all times on the wreck of the Titanic," Harris said. "We're in constant communication with the vessel up top."

Harris said the Titan was "put on a sled and dumped in the water and their only navigation is from the support ship up top."

"I don't adhere to that myself, personally," Harris said. 

Harris noted that he has worked with Nargeolet, who is listed as director of underwater research for RMS Titanic, for the past 30 years, describing him as an "all-around good guy."

Who was Hamish Harding?

Harding, the first of the passengers to be publicly identified, had previously posted on social media about joining the Titanic shipwreck expedition.

In a post shared to his  Facebook  page on Saturday, Harding wrote: "I am proud to finally announce that I joined OceanGate Expeditions for their RMS TITANIC Mission as a mission specialist on the sub going down to the Titanic."

I am proud to finally announce that I joined OceanGate Expeditions for their RMS TITANIC Mission as a mission specialist... Posted by Hamish Harding on  Saturday, June 17, 2023

"Due to the worst winter in Newfoundland in 40 years, this mission is likely to be the first and only manned mission to the Titanic in 2023," Harding's Facebook post continued. "A weather window has just opened up and we are going to attempt a dive tomorrow. We started steaming from St. Johns, Newfoundland, Canada yesterday and are planning to start dive operations around 4am tomorrow morning. Until then we have a lot of preparations and briefings to do."

That post was Harding's most recent social media update related to the submarine trip. It included multiple photographs of him, including one that showed Harding signing his name on a banner that read "Titanic Expedition Mission V" and another that pictured the submersible vessel itself.

Richard Garriott de Cayeux, president of The Explorers Club, where Harding helped found the board of trustees, said they had spoken just a week earlier about the expedition. 

"When I saw Hamish last week at the Global Exploration Summit, his excitement about this expedition was palpable. I know he was looking forward to conducting research at the site," he said in a letter to club members after the sub's disappearance.

Harding was a veteran adventure tourist who also  traveled to space  aboard a Blue Origin rocket last year. Two years ago, he made it to the deepest part of the ocean, traveling with U.S. explorer  Victor Vescovo  to the floor of the Mariana Trench, 35,876 feet below the sea surface. That trip, in a $48 million submersible, earned both explorers the Guinness World Record for the  longest distance traveled  at the deepest part of the ocean by a crewed vessel.

"It was potentially scary, but I was so busy doing so many things — navigating and triangulating my position — that I did not really have time to be scared," Harding told  The Week  after that excursion.

This is an updated version of an article originally published on Monday, June 19. Reporting contributed by Emmet Lyons, Roxana Saberi, Alex Sundby, Aimee Picchi, Aliza Chasan, Li Cohen, Caroline Hinson, Anna Noryskiewicz, Analisa Novak and other CBS News staff.

• Newfoundland
• United States Coast Guard

Emily Mae Czachor is a reporter and news editor at CBSNews.com. She covers breaking news, often focusing on crime and extreme weather. Emily Mae has previously written for outlets including the Los Angeles Times, BuzzFeed and Newsweek.

More from CBS News

Search underway for Titanic tourist submarine with 70-96 hours of oxygen left: Live updates

Editor's note: This page reflects the search for the submersible as of Monday evening. For the latest updates on the race against time to locate and rescue the submersible, please follow our live updates for Tuesday, June 20 .

U.S. and Canadian rescue teams were searching Monday for a submersible carrying five people to the wreckage site of the Titanic after the submarine vanished deep in the Atlantic Ocean with four days' or less worth of survival capability .

The U.S. Coast Guard in Boston is leading the search for the missing watercraft, which the Joint Rescue Coordination Centre in Halifax, Nova Scotia, said was reported overdue Sunday night about 435 miles south of St. John’s, Newfoundland.

Rear Adm. John Mauger, commander of the First Coast Guard District, said two aircraft each from the U.S. and Canada were involved in the search, along with a commercial ship, and that further assets will be added as the pursuit continues into the night.

The operation's location − about 900 miles east of Cape Cod and up to 13,000 feet deep − complicates the task, as does the need to look both on the surface of the water and below, he said.

"It is a challenge to conduct a search in that remote area,'' Mauger said at a news conference, "but we are deploying all available assets to make sure that we can locate the craft and rescue the people on board.''

Contact lost with five crew members

The Coast Guard tweeted that the 21-foot submersible named "Titan,'' which left from St. John's, began its dive Sunday morning. The Polar Prince, the Canadian ship supporting the watercraft, lost contact with it about an hour and 45 minutes later.

OceanGate Expeditions , a Washington-based deep-sea exploration company, confirmed in a statement that it owned the submersible − a vessel in the submarine family but smaller and less self-sufficient than the classic military sub.

The company's expeditions to the Titanic wreck site include archaeologists and marine biologists. OceanGate also brings people who pay to come along, known as “mission specialists.”

They take turns operating sonar equipment and performing other tasks in the five-person submersible. The Coast Guard said Monday there was one pilot and four “mission specialists” aboard.

“We are deeply thankful for the extensive assistance we have received from several government agencies and deep sea companies in our efforts to reestablish contact with the submersible,” OceanGate said. “We are working toward the safe return of the crewmembers.”

Based on the company's information, Mauger said the submersible has a 96-hour emergency sustainment capability, which would include oxygen and fuel. "So we anticipate that there's somewhere between 70 and the full 96 hours available at this point,'' he said.

See the Titanic in whole new way: Full-sized, 3D digital scan shows scale of wreckage site

British tourist on board

OceanGate adviser David Concannon told The Associated Press the company lost contact with the submersible Sunday morning.

Concannon, who said he planned to go on the dive but had to cancel because of a matter regarding another client, said officials are rushing to get to the site a remotely operated vehicle that can reach a depth of 20,000 feet. The Titanic wreckage is believed to lie 12,500 feet deep.

Action Aviation said its company chairman, British businessman Hamish Harding, was one of the travelers on board . The experienced adventurer went into space on Blue Origin’s New Shepard rocket last June.

“Every attempt is being made for a rescue mission,'' Mark Butler, the company’s managing director, told the AP. "There is still plenty of time to facilitate a rescue mission. There is equipment on board for survival in this event. We’re all hoping and praying he comes back safe and sound.”

Richard Garriott, president of the Explorers Club − a New York-based group that supports scientific exploration − said he saw Harding a week ago and “his excitement was palpable.''

“I know he was looking forward to conducting research at the site,” Garriott wrote in a letter to members. “We all join in the fervent hope that the submersible is located as quickly as possible and the crew is safe.”

Search to continue overnight

The Coast Guard said late Monday that two searches by C-130 aircraft had been completed and the mission would continue though the night.

"The Polar Prince and @Rescue106 will continue to do surface searches throughout the evening," the First Coast Guard District tweeted .

The Guard said Canadian and US aircraft will resume looking underwater and on the ocean's surface Tuesday.

Titanic facts: When did it sink? How many people died?

On April 14, 1912, the Titanic collided with an iceberg in the North Atlantic on its maiden voyage from Southampton, England, to New York City. On April 15, at about 2:20 a.m., the ship sank.

More than 1,500 people died on the Titanic. Of the roughly 2,200 people aboard the ship, only 706 survived. 

The majority of the people killed were members of the crew and third-class passengers. There were 710 deaths in the third class and 700 deaths among the crew.

How many people died on the Titanic?: Facts about the death toll and the survivors

Tourists added for expeditions

In 2021, OceanGate Expeditions began what it expected to become an annual voyage to the wreckage. The company had said it would include about 40 paying tourists to the team of archaeologists and marine biologists on the trips.

The initial group of tourists spent $100,000 to $150,000 apiece.

Contributing: The Associated Press

Titanic sub destroyed in 'catastrophic implosion,' all five aboard dead

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What we know about the 'catastrophic implosion' that killed five men aboard the Titanic submersible

After several days of searching in a remote area of the North Atlantic, the five people aboard a submersible near the Titanic wreck have been declared dead.

The cause of their deaths was a "catastrophic implosion of the vessel", according to US Coast Guard Rear Admiral John Mauger.

Here's what an implosion means, how it happens and whether the passengers could have felt it. 

How was the Titan sub found?

An uncrewed deep-sea robot deployed from a Canadian ship discovered the wreckage of the Titan submersible on Thursday morning.

Soon after the debris of the vessel was found, OceanGate Expeditions, the US-based company that operated the submersible, released a statement confirming the deaths of the five passengers. 

"We now believe that our CEO Stockton Rush, Shahzada Dawood and his son Suleman Dawood, Hamish Harding, and Paul-Henri Nargeolet, have sadly been lost," the company said. 

What did it find?

Five major fragments of the Titan were located in the debris field left from its disintegration.

This included the vessel's tail cone and two sections of the pressure hull , Coast Guard officials said.

"The debris field here is consistent with a catastrophic implosion of the vehicle," Mauger said.

No mention was made of whether human remains were sighted.

Where was it found?

Wreckage of the Titan submersible was found 488 metres from the bow of the Titanic wreckage.

This was 4 kilometres below the surface.

The US Coast Guard believes the nature and location of the debris suggests a catastrophic implosion which would have killed all five people on board.

When did the sub implode?

The US Coast Guard said it was too soon to say when the implosion happened.

The Titan had been missing since June 18. 

He said it was not detected by sonar buoys used by search crews, which suggests it happened before they arrived.

One source says the implosion may have happened days ago.

A US Navy acoustic system detected an "anomaly" on Monday, a senior military official told The Associated Press. 

It found the anomaly to be "consistent with an implosion or explosion in the general vicinity of where the Titan submersible was operating when communications were lost". 

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

The navy passed on the information to the coast guard, which continued its search because the navy did not consider the data to be definitive.

The navy's possible clue was not known publicly until Friday, when The Wall Street Journal first reported it.

What is an implosion?

Implosion is an explosion in reverse , according to Professor Stefano Brizzolara, the co-director of Virginia Tech Center for Marine Autonomy and Robotics. 

"Imagine a cylinder: during an explosion, the charge placed in the centre ignites and causes the pressure at the centre to increase instantaneously," Professor Brizzolara told ABC News. 

Such intense pressure is what causes the  ejection of mass to move from the centre of the cylinder to the outside  at an "incredible speed".

"An implosion is the reverse of this," Professor Brizzolara said.

"The inside of the cylinder can practically be considered void, while the pressure of the wave that breaches the hull is 400 times larger.

"This causes a violent flow of water from outside of the cylinder to the inside, with incredible speed.

"We're talking water rushing in at a speed of the order of 1,000 kilometres per hour."

What made it 'catastrophic'?

"Catastrophic implosion" literally means breaking into pieces and small fragments , says Professor Brizzolara.

Here's where "the hull" comes in — it's the main body of a ship or vessel and the Titan's is made from  carbon fibre and titanium.

Carbon-reinforced plastic collapses "catastrophically", says Professor Brizzolara.

"This is because the material is not ductile like metal alloys and therefore it 'catastrophically' implodes."

For context, navy submarines use high-strength steel or titanium alloys, Professor Brizzolara says. 

"This is why current rules and regulations do not consider composite materials for underwater vehicles meant to operate at large depths," he said. 

How did the implosion happen? 

A flood or a failure of the pressure vessel would have likely caused the implosion, says submarine expert Eric Fusil from the University of Adelaide.

That kind of "catastrophic event" would have happened within 20 milliseconds , Professor Fusil told ABC News Breakfast this morning. 

The Titan's pressure hull was made of a combination of titanium and a composite material of carbon fibres, which he described as "very new".

"The titanium pressure vessel is very elastic — it can crush and then restore its initial shape," Professor Fusil explained.

"But the carbon fibres are completely different — it's something very stiff."

"We have those two opposite forces," he said. 

Professor Fusil said it's an "experimental technology" and it was too early to tell whether that design caused the issues. 

What does an implosion feel like?

The five passengers inside the Titan submersible might not have realised it was even happening , Professor Fusil says.

"They wouldn't have realised they were dying because they cannot process that information that quickly," he said.

Implosions can be similar to a balloon, says forensic engineer Bart Kemper. 

"When I take a needle and poke it into a balloon, once you break that balloon, it's gone," Mr Kemper told 7.30’s Sarah Ferguson.

"That's exactly the problem you have with a pressure vessel, and the fact that this is external pressure, not internal pressure, it doesn't matter.

"Once you lose integrity, with these kinds of pressures, it's gone," he said. 

In 2018, submarine experts had warned the company operating the Titan, OceanGate, that without industry oversight the submersible was exposing passengers to possible catastrophic failure.

One of those experts was Mr Kemper.

What about those 'banging noises'?

Underwater sounds described as "banging noises" by a Canadian surveillance vessel initially sparked hope for a possible rescue. 

But these underwater sounds heard on Tuesday and Wednesday were probably unrelated to the submersible, The Associated Press reports.

The sounds in the Titan search were picked up using devices called sonobuoys , which can be tossed out of aeroplanes to detect noises, to avoid interference with ship sounds, said Matt Dzieciuch, an ocean acoustics expert at the Scripps Institution of Oceanography.

The ocean is a "noisy place," Dr Dzieciuch said.

There are many other potential sources of sound underwater, including from fish, other animals and of course human-made instruments, he explained.

Search teams heard the banging noises at 30-minute intervals , US Coast Guard Captain Jamie Frederick said at a press conference. 

But Mr Frederick went on to say analysis of the noises had been "inconclusive".

"With respect to the noises specifically, we don't know what they are, to be frank with you."

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

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June 19, 2023 - Search mission underway for missing Titanic tour submersible

By Elise Hammond , Maureen Chowdhury and Mike Hayes, CNN

Our live coverage of the search for the missing Titanic tour submersible has moved here.

OceanGate says it's taking "every step possible" to bring missing submersible crew back to safety

From CNN’s Jackie Wattles

OceanGate Expeditions says it is taking “every step possible” to return the five crew members onboard the missing submersible to safety and focusing its entire search effort on their wellbeing, according to a statement released by the company Monday night.

OceanGate Expeditions is the group that was conducting the expedition to view the wreckage of the Titanic.

“We are deeply grateful for the urgent and extensive assistance we are receiving from multiple government agencies and deep-sea companies as we seek to reestablish contact with the submersible,” the statement read.

Here's the full statement:

“For some time, we have been unable to establish communications with one of our submersible exploration vehicles which is currently visiting the wreck site of the Titanic. Our entire focus is on the wellbeing of the crew and every step possible is being taken to bring the five crew members back safely. We are deeply grateful for the urgent and extensive assistance we are receiving from multiple government agencies and deep-sea companies as we seek to reestablish contact with the submersible. We pray for the safe return of the crew and passengers, and we will provide updates as they are available.” 

US Coast Guard to continue surface search for missing submersible throughout the evening

From CNN’s Artemis Moshtaghian

The US Coast Guard  tweeted that it will continue to conduct surface searches for the missing submersible throughout the evening.

The Coast Guard tweeted that The Polar Prince, the vessel used to transport the submersible to the site of the Titanic wreckage before the expedition, as well as aerial support from the Air Force’s 106th Rescue Wing will be involved in the surface searches. 

Canadian Coast Guard surface and subsurface search, as conducted by Canadian P8 Poseidon aircraft, will continue in the morning, according to the US Coast Guard.

Titanic's fate has long been a source of fascination. Here are some key facts about the luxury liner

From CNN Staff

The submersible that has gone missing in the North Atlantic was part of an expedition to view the wreckage of the RMS Titanic, perhaps the most famous shipwreck in the world.

More than 100 years after its disastrous maiden voyage, the fate of the luxury liner has long served as a source of fascination , and been the backdrop for countless books, fiction and non-fiction and, of course, the blockbuster movie.

The ship set sail from Southampton, England, to New York on April 10, 1912.

Then, between April 14-15, it hit an iceberg around midnight and sank in less than three hours.

A total of 1,517 people died and 706 survived out of 2,223 passengers and crew, according to the  US Senate report  on the disaster.

Here's more interesting facts on the Titanic:

The ship: The estimated cost of construction was $7.5 million. At the time, the RMS Titanic was the largest passenger ship afloat. The ship’s length was 882 feet, 9 inches, and it weighed 46,328 tons. Its top speed was 23 knots. The wreckage is located about 350 miles off the southeast coast of Newfoundland.

The cause of the crash: The iceberg punctured five of 16 supposedly watertight compartments designed to hold water in case of a breach to the hull. Investigations at the time blamed Capt. Edward Smith for going too fast in dangerous waters, initial ship inspections that had been done too quickly, insufficient room in the lifeboats for all passengers, and a nearby ship’s failure to help. Many maritime safety reforms were implemented as a result of the findings of the investigations.

Smith went down with the ship, and his body was never recovered.

Key dates post-shipwreck:

• September 1, 1985 -  Scientists from Woods Hole Deep Submergence LAB in Massachusetts, led by Dr. Robert Ballard, and IFREMER, the French Institute Francais de Recherche pour l’Exploitation des Mers, led by Jean Jarry, locate the wreckage of Titanic.
• July 13, 1986 -  Ballard and his crew use the manned deep-ocean research submersible Alvin to explore the wreckage. The Alvin is accompanied by a remotely operated vehicle named Jason Jr. to conduct photographic surveys and further inspections.
• May 31, 2009 -  The last known survivor, Millvina Dean, dies at age 97.
• April 8-20, 2012 -  The 100th anniversary of the Titanic’s voyage. The MS Balmoral traces the ship’s route from Southampton to New York and holds a memorial service, above the wreck, on April 15.

Read more here .

Aircraft and sonar deployed in search for missing submersible. Here's what we know

From CNN staff

A search and rescue operation is underway for a missing submersible operated by a company that handles expeditions to the Titanic wreckage off the coast of St John’s, Newfoundland, in Canada.

The vessel has between 70 and 96 hours of life support, officials said Monday afternoon.

Here's what we know so far:

• The timeline: The expedition began with a 400-nautical-mile journey to the wreck site, which is about 900 miles off the coast of Cape Cod, Massachusetts. The submersible began its descent Sunday morning but lost contact with a crew of Polar Prince , the support ship that transported the vessel to the site, 1 hour and 45 minutes into its descent, officials said. The US Coast Guard was alerted that the submersible was overdue and it launched searches on the surface of the water and launched an aircraft to start conducting aerial and radar searches, Rear Adm. John Mauger said during a news conference Monday.

Here's a map of area:

• What we know about the vessel: The submersible, named “Titan,” is 23,000 pounds and made of carbon fiber and titanium, according to the tour operator, OceanGate Expeditions. The 21-foot vessel has life support for up to 96 hours, according to the OceanGate website . Mauger said officials "anticipate that they're somewhere between 70 to the full 96 hours " of oxygen available on the vessel at this point. The  Titanic wreckage, discovered in 1985 , sits in two parts at the bottom of the ocean nearly 13,000 feet below the surface.
• Who is on board: Five people are in the missing submersible, according to authorities. Businessman  Hamish Harding is one of the passengers, according to a social media post by his company, Action Aviation. Typically a pilot, a “content expert” and three paying passengers are on the expeditions, according to the OceanGate website. The cost of joining the eight-day expedition is "from $250,000," according to the operator. Mauger said the Coast Guard is notifying the families of the people on the submersible.
• Search efforts: The effort is incorporating aircraft, sonar buoys and "sonar on the ship that is out there to listen for any sounds that we can detect in the water column," Mauger said. The Polar Prince is also assisting with the search, a co-owner said. The Canadian Armed Forces and the US Coast Guard have deployed aircraft to the remote area of the North Atlantic.
• What's next: The Coast Guard said its priority is locating the vessel. If crews do find the vessel in the water, then rescue plans will be formed, Mauger said. At that point, the Coast Guard will reach out to the US Navy, the Canadian Armed Forces and private industry partners to assess what "underwater rescue capability might be available," Mauger said.

Businessman Hamish Harding is one of the passengers on the submersible, his company says

From CNN's Paul P. Murphy 

Businessman and adventurer Hamish Harding is one of the passengers on the submersible that went missing during a dive to the wreckage of the Titanic, according to a social media post by his company, Action Aviation. 

OceanGate, the company conducting the expedition, released a statement Monday confirming it lost contact with the submersible but did not specify who was onboard.

Harding, a British national, was one of the first people to travel  the Challenger Deep  in the Pacific Ocean — the deepest known point on Earth.

The United Arab Emirates-based businessman also made headlines in 2019 for being part of a flight crew that broke the world record for the  fastest circumnavigation  of the globe via both poles. More recently, he was a passenger on Blue Origin’s June 2022 space flight .  

Harding  posted  on Facebook on Saturday about his participation in the expedition.

“I am proud to finally announce that I joined OceanGate Expeditions for their RMS TITANIC Mission as a mission specialist on the sub going down to the Titanic,” the post read.

CNN has reached out to Action Aviation for comment but did not immediately receive a response. 

The Explorers Club, a New York-based group of elite explorers and scientists that’s been involved in many of the world’s most prestigious discoveries, confirmed Harding was on the submersible.

President Richard Garriott de Cayeux said he saw Hamish last week and “his excitement about this expedition was palpable,” Cayeux wrote in a statement, “I know he was looking forward to conducting research at the site.”

Harding is one of the founding members of the club.

A spokesperson for the UK Foreign, Commonwealth and Development Office told CNN it was aware of reports of a British citizen on the submersible.

“We are in contact with the family of a British man following reports of a missing submarine off the coast of North America,” the spokesperson said.

CNN’s Artemis Moshtaghian contributed reporting to this post.

Canadian Armed Forces mobilize aircraft to assist in search for missing submersible

From CNN’s Paula Newton

The Canadian Armed Forces is deploying an aircraft to assist in the search for the missing submersible near the Titanic wreckage, a spokesperson told CNN.

“A Royal Canadian Air Force CC-130 Hercules is preparing to join the search as well,” Len Hickey, a senior public affairs officer for the Canadian Armed Forces, wrote in a statement to CNN.

The US Coast Guard said earlier that it had also deployed aircraft that is searching the surface of the ocean and underwater.

Submersible has 70 to 96 hours of oxygen available, Coast Guard says

US Coast Guard Rear Admiral John Mauger said that the submersible has 96 hours of emergency oxygen on board, based on information received from the vessel operator.

The Coast Guard "anticipate that they're somewhere between 70 to the full 96 hours" of oxygen available on the vessel at this point, he said during a news conference Monday.

Priority on Monday is to locate missing Titanic submersible, Coast Guard commander says

Right now the Coast Guard said its priority is locating the missing submersible that didn’t emerge on Sunday after an expedition to the Titanic wreckage.

Rear Adm. John Mauger, the commander of the First Coast Guard District that is in charge of operations, said that if crews do find the vessel in the water, then rescue plans will be formed. 

Mauger said the Coast Guard is "reaching out to different partners within the US Navy, within the Canadian Armed Forces and within private industry to understand what underwater rescue capability might be available."

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