Oxygen on the missing Titanic submersible is expected to run out in hours, with hopes of finding the five people on board starting to fade.
The vessel, named Titan, lost communication with tour operators on Sunday while about 435 miles south of St John’s, Newfoundland, during a voyage to the Titanic shipwreck off the coast of Canada.
Ships, planes and underwater craft have been deployed to the area with rescuers searching a remote part of the Atlantic Ocean more than twice the size of the US state of Connecticut in waters as deep as 4,020m (13,200ft).
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2:42
How might Titan be found?
The US Coast Guard has been leading an international rescue effort, which was stepped up after underwater noises were heard on Tuesday and again on Wednesday, although experts have been unable to determine the cause of the sounds.
According to OceanGate, Titan’s operator, the 6.7m-long (22ft) OceanGate Expeditions vessel which has British billionaire adventurer Hamish Harding on board, has a 96-hour oxygen supply in case of emergencies.
Also in the undersea craft are British businessman Shahzada Dawood, his son Suleman Dawood, OceanGate’s US-based chief executive and founder Stockton Rush and French submersible pilot Paul-Henri Nargeolet.
A former passenger on one of Titan’s maiden voyages told Sky News on Thursday he ultimately “decided to back off” from the Titanic dive project as he “couldn’t get comfortable with the design”.
US explorer Josh Gates described how there were system errors during his journey on the submersible in a “shakedown dive” in 2021 with Mr Rush.
“I would say that some of the systems on board performed very well. Some of them didn’t perform well at all. We had issues with thrusters, we had issues with computer control aboard,” he said.
Image: (Clockwise from top left) Paul-Henri Nargeolet, Stockton Rush, Hamish Harding, Suleman Dawood and Shahzada Dawood
Key points: • Mission to find vessel enters a new phase of urgency with the final few hours of oxygen left on board • OceanGate’s US-based chief executive Stockton Rush, French submersible pilot Paul-Henri Nargeolet and Britons – billionaire adventurer Hamish Harding, businessman Shahzada Dawood, and his son Suleman Dawood are on the sub • The US coast guard is leading an international rescue effort, with a vast area of the Atlantic Ocean off the Canadian coastline being searched • Rescuers have rushed more ships, planes and vessels to the site of the disappearance, hoping underwater sounds they have been detecting for days might help narrow their search
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2:12
Missing sub: ‘It takes a lot of courage’
No other sub like Titan in the world
The US Coast Guard predicts the oxygen supply in the Titan submersible will run out at 12.08pm UK time today.
An extensive search and rescue operation is continuing, as those involved say they will “hold on hope until the very end”.
One of the vessels sent to help search efforts is French research vessel L’Atalante which carries a remotely operated vehicle (ROV), Victor 6000.
It has the capability to lift the Titan ship to the surface.
Asked whether the mission was changing to become a recovery search, Captain Jamie Frederick of the US Coast Guard told reporters: “This is a search and rescue mission, 100%, we are smack dab in the middle of search and rescue and will continue to put every available asset that we have in an effort to find the Titan and the crew members.”
Even those who have expressed optimism have warned many obstacles remain: from pinpointing Titan’s location, to reaching it with rescue equipment, then bringing it to the surface – assuming it is still intact.
All this has to happen before the passengers’ oxygen supply runs out.
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There is no other vehicle like Titan anywhere in the world – it is a one-off, said Mr Gates.
He said Titan is described in the waivers as an “experimental craft” and added “it is truly experimental in a very real sense of the word”.
“It is like being a test pilot on a plane that has never ever flown before, and so there is a totally different category of risk with a vehicle like this,” he said.
“There are a huge number of unknowns with a submersible like this… You have an innovative, novel design, but it comes with a lot of mysteries in terms of how it is going to perform over time.”
Mr Gates said the fact that Titan apparently has not surfaced despite being “well off the bottom” when contact was lost at the weekend opens up questions over what else may have gone wrong.
One such possibility is a hull failure, which “speaks to the carbon fibre design of Titan”, Mr Gates said.
He added that though the time period for a rescue is closing, “we should remain hopeful here for a positive outcome for this”.
Mr Gates also touched on some online criticism of the passengers for boarding the experimental craft at a high cost, saying there have been “a lot of callous comments”.
He said Titanic has “fascinated the world” since she sank a century ago and the shipwreck holds “a real fascination for people”.
“It takes a lot of courage and determination to go on a voyage like this,” he said, adding that he “commended” the five men aboard Titan for having the “passion and determination” to embark on the deep-sea trek.
But when asked if Russia could attack within months, Mr Zelenskyy said he did not “believe [Putin] is ready”.
Mr Zelenskyy also said plans for NATO members to increase defence spending to 5% of GDP by 2035 are “very slow” – adding: “We believe that, starting from 2030, Putin can have significantly greater capabilities.
“Today, Ukraine is holding him up, he has no time to drill the army.”
Image: Sky’s Mark Austin meets Volodymyr Zelenskyy
Russia’s soldiers are “all getting annihilated and wiped out at the battlefield”, he warned.
“In any case, [Putin] needs a pause, he needs sanctions to be lifted, he needs a drilled army.
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“And 10 years is a very long time. He will have a new army ready [by then].”
Zelenskyy appeared defiant – but he’s struggling to make himself heard
He’s an embattled wartime leader struggling to make himself heard. For Ukrainian President Volodymyr Zelenskyy the war in Iran could not have come at a worse time.
Suddenly the world’s attention is on a different conflict and most crucially so is the attention of the most powerful man in the world, Donald Trump.
But this is a big 24 hours for Zelenskyy, a meeting with Sir Keir Starmer in Downing Street followed by the NATO summit in The Hague.
When I sat down with President Zelenskyy in the last few hours he had two main issues on his mind.
Firstly, the proposed spending pledge by NATO countries of 5% of GDP by 2035 – that he said was too slow and warned that Putin would be ready with a new army within five years. He said the Russian leader would likely attack a NATO country within a few years to test Article 5.
Then he was on to sanctions, which he told me, were not working. Countries, including the UK, were allowing dual use components used in the production of drones and missiles to still get into Russian hands and must be blocked.
He also still insisted there would be no negotiations without a ceasefire. This war is not going well for Ukraine right now.
Three-and-a-half years into it, the fighting goes on and Zelenskyy appeared to be a defiant president determined to see it through.
The UK and its NATO allies will formally sign off the defence spending plans when the heads of state and government meet in The Hague today and tomorrow.
The spending goal is broken down into 3.5% of GDP to be spent on pure defence and 1.5% of GDP on related areas, such as infrastructure and cybersecurity.
Defence spending of 5% is the kind of level invested by NATO allies during the Cold War.
Mr Zelenskyy met Sir Keir Starmer at Downing Street and Commons Speaker Sir Lindsay Hoyle at parliament on Monday, before travelling to Windsor Castle for a meeting with the King.
The Ukrainian president has been invited to the NATO summit, but will not take part in its main discussions. It is still unclear whether he will attend.
You can watch the full interview throughout the day on Sky News
Iran claims it has carried out a “mighty and successful response” to “America’s aggression” after launching missile attacks on a US military base in Qatar and Iraq.
Iran’s response this evening is the latest escalation in tensions in the volatile region.
Qatar has said there were no casualties at the al Udeid base following the strikes and that its “air defences thwarted the attack and successfully intercepted the Iranian missiles”.
People in Qatar’s capital, Doha, had stopped and gazed up at the sky as missiles flew and interceptors fired.
Iran had announced on state television that it had attacked American forces stationed at the al Udeid airbase.
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A caption on screen called it “a mighty and successful response” to “America’s aggression” as martial music played.
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1:08
Iran releases video after attack on US base
Initial reports claimed Iran had also targeted a base housing US troops in western Iraq, but a US military official later told Reuters news agency the attack in Qatar was the only one detected.
A US government official said the White House and US defence department was “closely monitoring” the potential threats to its base.
Meanwhile, US President Donald Trump was in the Situation Room in the White House with his team following the Iranian strikes.
Image: Traces are seen in the sky over Qatar after Iran’s armed forces targeted the al Udeid base. Pic: Reuters
He later said in a post on Truth Social that the missiles were a “very weak response”, which the US “expected” and “very effectively countered”.
He added: “Most importantly, they’ve gotten it all out of their ‘system,’ and there will, hopefully, be no further HATE.
“I want to thank Iran for giving us early notice, which made it possible for no lives to be lost, and nobody to be injured.
“Perhaps Iran can now proceed to Peace and Harmony in the Region, and I will enthusiastically encourage Israel to do the same.”
Iran’s Supreme Leader Ayatollah Ali Khamenei said in a post on X: “We have not violated anyone’s rights, nor will we ever accept anyone violating ours, and we will not surrender to anyone’s violation; this is the logic of the Iranian nation.”
The attacks came shortly after Qatar closed its airspace as a precaution amid threats from Iran.
Just before the explosions, Iranian president Masoud Pezeshkian wrote on the social platform X: “We neither initiated the war nor seeking it. But we will not leave invasion to the great Iran without answer.”
Kuwait and Bahrain briefly shut their airspaces after the attack, news agencies in each country reported.
Iraq also shut its airspace, while Oman Air suspended some flights in the region.
The Abu Dhabi-based Etihad Airways said it is rerouting several flights today and tomorrow due to restrictions in parts of the Middle East.
Three of Iran’s key nuclear enrichment facilities – Fordow, Natanz and Isfahan – were targeted in US airstrikes on 22 June.
The prime target of the attacks was Iran’s most advanced facility at Fordow, suspected of being used to enrich uranium close to what’s needed for a nuclear bomb.
Satellite images from the aftermath of the US strikes suggest at least six bombs were dropped there.
Image: Satellite imagery of Fordow after the US bombing. Pic: Maxar Technologies
The secure nuclear facility, home to Iran’s main enrichment site, is buried deep under a mountain.
So exactly how much damage was done is unknown, perhaps even to Iran, which appears to have evacuated the site. The specific location of the strikes and the bombs used gives us an indication.
America used the 30,000-lb Massive Ordnance Penetrator bomb, or a GBU-57 – commonly known as a “bunker buster”.
The bunker buster is the only missile that had a chance of destroying the Fordow facility, and American planes were needed for them to be used.
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Blueprints from Iran’s Nuclear Archive, which date from before 2004 and were seized by Israeli spies in 2018, suggest the bombs targeted the tunnels under the Fordow site.
Image: Blueprints of the Fordow Fuel Enrichment Plant suggest tunnels run through the mountain. Pic: Google Earth
The access tunnels overground lead to a 250 metre long hall which is thought to contain the uranium enrichment centrifuges, and well as the location of what is thought to be ventilation shafts.
Iran is thought to have likely moved any enriched uranium from the facility before the strikes occurred. But if the ventilation shafts were hit, that would allow the bombs to penetrate as far as possible and hit the centrifuge hall itself.
Iran’s major nuclear facilities seriously damaged, if not completely destroyed
The loss of industrial-scale centrifuge “cascades” used to enrich uranium will certainly derail any imminent deadlines in weaponisation the Islamic Republic may have set itself – more on that below.
But it has already amassed a sizeable stockpile of highly enriched uranium and may even have already enriched some of it to the 90% or so needed to make fissile material necessary for a bomb.
And despite strikes on industrial scale facilities that have taken decades to generate that stockpile, the material itself weighs less than half a tonne.
Moving it, splitting it up, concealing it, is not beyond the wit of a nation that expected these assaults may be coming.
Iran’s nuclear programme is also more than its large-scale facilities. Iran has been developing nuclear expertise and industrial processes for decades. It would take more than a concerted bombing campaign to wipe that out.
The final steps to “weaponise” highly enriched uranium are technically challenging, but Iran was known to be working on them more than 20 years ago.
Iran also does not require industrial-scale facilities like those needed to enrich uranium, meaning they could be more easily concealed in a network of smaller, discrete lab-sized buildings.
But what’s far from clear is whether Iran had actually taken steps towards weaponisation in recent years.
Recent US intelligence assessments indicated that it hadn’t. Iran’s leaders knew that very significant moves towards making a bomb would be seen as a major escalation by its neighbours and the international community.
For a long time, a key deterrent to Iran developing a nuclear weapon has been an internal political one.
It’s possible of course that position may have been shifting and these latest strikes were designed to disarm a rapidly weaponising Iran.
But it’s also possible the attacks on its nuclear programme may be forcing a previously tentative government to push harder towards making a nuclear bomb.
Fordow is only one of three nuclear facilities targeted in America’s strike, however, and one of seven that have been targeted since the conflict began.
Natanz’s uranium enrichment facility, about 140 km south of Fordow, had been subject to multiple Israeli strikes before America’s advance.
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Israeli raids targeted surface buildings, including stores of enriched uranium. However, post-strike radiation monitoring suggested there was little, if any, nuclear material there.
At the weekend, Americans dropped bunker-buster bombs there too, targeting thousands of enrichment centrifuges operating in bunkers below.
Image: Destruction at the Natanz Enrichment Complex from satellite imagery. Pic: Maxar Technologies
Then there is the Isfahan complex. Again, Israeli missiles destroyed a number of buildings there last week. And at the weekend, US cruise missiles targeted others, including the uranium conversion plant.
At the weekend, Americans also dropped bunker-buster bombs there, targeting thousands of enrichment centrifuges operating in bunkers below.
Image: Satellite imagery shows the impact on the Isfahan Nuclear Complex. facility. Pic: Maxar Technologies
Speaking from the White House after the attacks, Donald Trump said facilities had been “completely and totally obliterated”. But experts suggest it could take more to destroy it entirely.
“This is a very well-developed, long-standing programme with a lot of latent expertise in the country,” said Darya Dolzikova, a proliferation and nuclear security expert at RUSI, a UK defence and security thinktank
“I don’t think we’re talking about a full elimination at this point, certainly not by military means.”
The Data and Forensics team is a multi-skilled unit dedicated to providing transparent journalism from Sky News. We gather, analyse and visualise data to tell data-driven stories. We combine traditional reporting skills with advanced analysis of satellite images, social media and other open source information. Through multimedia storytelling we aim to better explain the world while also showing how our journalism is done.