US Navy detected implosion sound after contact was lost with Titan

6:38am - ‘Student, 19, killed was 'terrified' before trip’

Suleman Dawood, the 19-year-old student who was killed in the Titan submersible, was “terrified” before the trip but went as a Father’s Day present.

Speaking to NBC News, Azmeh Dawood, the older sister of businessman Shahzada Dawood spoke out about her nephew’s fears saying Mr Dawood's son Suleman was "very not into doing it".

Suleman, 19 (L) and his father Shahzada

"Suleman had a sense that this was not okay, and he was not very comfortable about doing it," she said. "But it was a Father's Day thing. It was a bonding experience, and he wanted the adventure of a lifetime, just like his father did.

Azmeh said the other men who were killed in the "catastrophic implosion" went on the trip "for their own interests" - unlike Suleman

“Suleman was just there for a Father's Day bonding experience.”

06:35am Titanic director James Cameron warned about Titan

Movie director and submersible maker James Cameron said on Thursday he wishes he had sounded the alarm earlier about the submersible Titan that imploded on an expedition to the Titanic wreckage, saying he had found the hull design risky.

Cameron became a deep-sea explorer in the 1990s while researching and making his Oscar-winning blockbuster "Titanic," and is part owner of Triton Submarines, which makes submersibles for research and tourism.

He is part of the small and close-knit submersible community, or Manned Underwater Vehicle (MUV) industry. When he heard, as many in the industry had shared, that OceanGate Inc was making a deep-sea submersible with a composite carbon fiber and titanium hull, Cameron said he was skeptical.

"I thought it was a horrible idea. I wish I'd spoken up, but I assumed somebody was smarter than me, you know, because I never experimented with that technology, but it just sounded bad on its face," Cameron told Reuters in a Zoom interview.

The cause of the Titan's implosion has not been determined, but Cameron presumes the critics were correct in warning that a carbon fibre and titanium hull would enable delamination and microscopic water ingress, leading to progressive failure over time.

05:56am US Navy detected implosion

The US Navy detected sounds "consistent with an implosion" after OceanGate's Titan submersible lost contact, a navy official has said.

20:11pm 'ROVs will remain on scene'

Admiral John Mauger of the US Coast Guard: "The ROVs will remain on scene and gather information. Our most heartfelt condolences go to the loved ones of the crew.

“During the search we’ve had sonar buoys in the water continuously and not detected any catastrophic events when they’ve been in the water.

“Our thoughts are with the families and making sure they have an understanding as fast as we can provide as to what happened and begin to find some closure.

Rear Admiral John Mauger, the First Coast Guard District commander

“We will continue to investigate the site of the debris field. We will collect as much information as we can while the governments are meeting and discussing what an investigation of this nature of casualty might look like.

“This happened in a remote portion of the ocean with people from different countries so it’s a complex case to work through.

20:03pm 'Debris consistent with catastrophic loss of the pressure chamber'

The tail cone of the missing Titan submersible has been found close to the wreck of the Titanic, Rear Admiral John Mauger of the US Coast Guard said, adding the debris discovered was “consistent with a catastrophic loss of the pressure chamber”. 

“The ROV found additional debris consistent with the catastrophic loss of the pressure chamber. We immediately notified the families. On behalf of the USCG I offer my deepest condolences to the families.

“I can only imagine what this has been like for them and hope this discovery provides some solace during this difficult time.

“We’ve been in close contact with the British and French consular general to ensure their concerns are addressed. The outpouring of support during this operation has been robust and immensely appreciated.

“We thank all of the agencies and personnel to their response. The ROVs will remain on scene and gather information. Our most heartfelt condolences go to the loved ones of the crew."

19:52pm Titan's crew have 'sadly been lost'

 The owner of the submersible that went missing during a tourist expedition to the Titanic's wreckage says that the crew on board have "sadly been lost".

"We grieve the loss of life," a spokesperson for OceanGate is reported as saying.

19:27pm 'A quicker execution than a bullet'

Titanic expert Tim Maltin says if the discovered debris is from the Titan sub, the five people within would have had an "instantaneous" death.

"Obviously, we were all hoping for a miracle. But we did realise that we were needing a miracle to pull these people through this terrible situation.

"The fact they found debris now if it is indeed debris from the submersible the Titan, which we believe it is experts believe it is, then it means that there was a catastrophic implosion.

"The only plus side I can see for that is instead of those brave people and also that 19-year-old young man having a slow and agonising death, it would have been instantaneous, a quicker execution than a bullet.

"And I think in a way if I had the choice I would choose the implosion."

18:50pm US Coast Guard media briefing

The US Coast Guard is preparing to update journalists on the findings from the Horizon Arctic’s remotely operated vehicle near the Titanic, at 3pm EDT (8pm BST).

TalkTV's Piers Morgan will bring you this briefing live.

18:32pm Titan passenger's daughter: 'He is in a place he loved most'

The daughter of French oceanographer Paul-Henri Nargeolet, one of five people inside a submersible missing near the Titanic wreck, said on Thursday she held hope they will be rescued but she is comforted by the knowledge that he is in the place he loved most.

Sidonie Nargeolet told Reuters she was living with "a lot of stress, very mixed emotions" as the search for the submersible in the depths of the Atlantic Ocean entered a critical phase, with air expected to run out for the five people aboard.

"I really hope they will find them and safe. I think we have to trust what they are doing and be confident," Nargeolet, 39, told Reuters in the town of La Massana, Andorra, where she lives.

Nargeolet said her 77-year-old father's vast experience with submarines made him "know how to react to problems" and she was confident he was able to manage the situation well.

"He is very passionate about the Titanic since they found it 30 years ago and I know now he is at the place he would like to be."

Her father's colleagues have described him as a leading expert on the Titanic with more than 35 dives to the wreck under his belt after a two-decade career in the French navy.

His daughter said she learned about the accident on Monday, when she received a text message from her father's spouse saying he should have been back at 6 p.m. on Sunday.

"I cried a lot," she said of her reaction to the news. She had last seen her father just before Christmas last year in Andorra.

"He sent me a message a week before (getting in the submersible) telling me the weather was bad, so they hadn't been able to go down, but that there was a great atmosphere," she said. "I sent him a message on Sunday for Father's Day but he didn't reply."

16:54pm Debris field” discovered within search area

A "debris field" has been found in the search area by an remotely operated vehicle (ROV) near the Titanic wreck.

The US Coast Guard said experts were “evaluating the information” after a debris field was discovered by a remotely operated vehicle searching for the missing Titan submersible near the wreck of the Titanic.

The Coast Guard had said earlier on Thursday that it is still treating the mission as an “active search and rescue”, despite hopes fading as the expected 96-hour oxygen supply onboard dwindled.

The Coast Guard said a remotely-operated vehicle from the Canadian Horizon Arctic ship found debris on the sea floor near the Titanic wreckage.

A press conference will be held at the Coast Guard base in Boston to “discuss the findings” at 8pm UK time.

Rear Admiral John Mauger, First Coast Guard District commander, and Captain Jamie Frederick, First Coast Guard District response coordinator, will lead the press conference.

The hunt for the missing deep-sea vessel is still an “active search and rescue” mission after it lost communication on Sunday.

The vessel was about 435 miles south of St John’s, Newfoundland, during a voyage to the Titanic shipwreck off the coast of Canada.

10:56am: Rescuers will continue for "another couple of days" even if oxygen runs out

Ex-submarine captain Ryan Ramsey told TalkTV's Mike Graham that the search for the missing Titanic tourist sub will continue "for another couple of days" even if rescuers believe the oxygen will have run out.

"It's a tragedy. There’s not much more that people can do about it unfortunately.

"The helplessness of the five people inside the submersible is significant", he added.

10:04am: 'The pressures on the submersible at this depth are unimaginable'

TalkTV’s Ian Collins was joined by former Royal Navy nuclear submariner Richard Fear to discuss the hopes of a rescue for those trapped in the tourist submersible.

Mr Fear said the fact that the banging sounds detected in the ocean yesterday were at regular 30-minute intervals suggests they were "man-made".

Speaking about the remaining oxygen in the sub, Mr Fear said: "As humans we breathe oxygen and we exhale carbon dioxide, so the carbon dioxide levels in this submersible will be quite high, and I've not heard that they have any equipment to remove that carbon dioxide."

"You're in a confined space, you can't just go and get some fresh air", he continued, "the pressures on the submersible at this depth are unimaginable.”

9:32am: Passenger on sub is 'an extraordinary individual'

Dik Barton, friend of Frenchman Paul-Henri Nargeolet who is trapped on the Titanic Sub, says he is an extraordinary individual, "he'll be an extremely stabilising influence... he knows what he's doing."

"Hopefully the vessel will be located", he continued, "but unfortunately that is only the beginning of the recovery process", adding that it could take at least two and a half hours to bring the vessel to the water surface.

9:12am: 'The sea is always out to get you'

Former Royal Navy commander Dr Chris Parry says “it’s over” for the crew on the missing Titanic sub.

"There is no way we're going to rescue these people. Even if they located the submersible now, they wouldn't be able to get it to the surface", he said.

"The sea is always out to get you. Everything has to go right every time. In this sector, people are taking chances with people’s lives."

9:00am Estimated three hours left of oxygen

The passengers of Titan could have less than three hours of air left, based on earlier estimates.

Experts are searching for a missing submersible in the area where noises have been heard beneath the surface, the US Coast Guard confirmed.

Captain Jamie Frederick told reporters in Boston on Wednesday the cause of the noises in the North Atlantic was still unconfirmed but insisted the efforts to find the five missing people aboard the Titan was still “a rescue mission”.

8.50am 'Titanic sub search is "emotional rollercoaster'

Speaking to TalkTV's Vanessa Feltz, The Sun's Defence Editor has said the search to find a missing sub near the Titanic wreck has become an "emotional rollercoaster" which has captivated the world's imagination.

Jerome Starkey said: "It's such an emotional rollercoaster. Not only is it the Titanic, which has already captivated the world's imagination, but it's this small, dangerous, daring mission in to the depths.

"One minute we think it's almost no chance they're going to come back and then the next there's a glimmer of hope from the news that they (the passengers) were banging. No the focus is on locating the sub."

8.08am UK Foreign Secretary is not "directly involved" but ready to provide consular assistance

James Cleverly said: “Our High Commissioner in Canada stands ready to help and support on the consular side of things.

“This is a highly technical, highly difficult situation. Not one that my department is directly involved in, but of course we stand ready to support our friends around the world.”

8.05am The Explorers Club president criticises time taken to send support

In a statement, Richard Garriott de Cayeux confirmed the Explorers Club is sending support to help with the search for Titan but criticised the time taken to get the support accepted.

He said: "Magellan is en route (should have been accepted sooner), we are still trying to get side scan sonar (should have been accepted sooner), and still working on ships to transport equipment and other details."

8.00am 'Not a quick operation'

Oceanographer Dr Simon Boxall says “it’s not a quick operation” to rescue the missing Titanic sub even if it’s found in time.

“If they find it, they can get it to the surface. But even then it takes a couple of hours to get the ROV to travel down through the ocean.”

7.45am 'Expectations very low'

Oxygen on the missing Titanic submersible is expected to run out in hours, with rescue efforts to find the five people onboard in full force.

Commentator Candice Holdsworth said: “People say you can still hold out hope, I’m keeping my expectations very low with this.”

7.30am Experts say they warned Stockton Rush about Titan's safety in 2018

Will Kohnen, of the Marine Technology Society's manned submersibles committee, said he raised concerns about the Titan in 2018 with OceanGate founder Stockton Rush, who is piloting the missing vehicle.

The issue was not any single design flaw, but that OceanGate chose not to pursue the industry's recognized certification process for the submersible's design, fabrication and testing.

Kohnen said he addressed a letter, dated March 27, 2018, to Rush, before later discussing the letter with Rush.

The letter came about after many submersible experts voiced concerns over the Titan during a three-day annual symposium, he said

7.15am Labour MP Carolyn Harris says explorers should leave the Titanic alone

Speaking to TalkTV's Marverine Cole, Labour MP Carolyn Harris said: "I have a real problem with anyone disturbing the Titanic.... it's sacred.

"It's a burial ground at the end of the day and it should be left in peace."

05:39am Former Titan passenger recalls losing contact with support ship

A former passenger on Titan that visited the wreck of the Titanic said the expedition was “extremely risky.”

Alan Estrada visited the Titanic remains in 2022, after a mission failed the previous year.

In an online interview, he remembered the descent of the mission he participated in 2022 was almost aborted after losing contact with its surface support ship.

An international coalition of rescue teams was sweeping a vast expanse of the ocean for the 22-foot (6.7-meter) submersible, which vanished on Sunday while carrying five people on a deep-sea voyage to the century-old shipwreck as part of a tourist expedition.

Estimates suggest the air supply on board could run out in a matter of hours.

Estrada released the videos of the failed and successful expeditions on his Youtube channel, Alan x el Mundo.

05:21am Oxygen could run out at noon

The passengers of Titan could have less than six hours of air left, based on earlier estimates.

Experts are searching for a missing submersible in the area where noises have been heard beneath the surface, the US Coast Guard confirmed.

Captain Jamie Frederick told reporters in Boston on Wednesday the cause of the noises in the North Atlantic was still unconfirmed but insisted the efforts to find the five missing people aboard the Titan was still “a rescue mission”.

Coast Guard Captain Jamie Frederick said at a press conference that analysis of the noises has been "inconclusive."

"When you're in the middle of a search-and-rescue case, you always have hope," he said. "With respect to the noises specifically, we don't know what they are." Officials did not offer a description of the sounds.

In one highly anticipated addition to the search, the French research ship Atalante was en route late on Wednesday to deploy a robotic diving craft capable of descending to a depth well below that of even the Titanic wreck, the Coast Guard said.

15:38pm: US Coast Guard to hold press conference

The US Coast Guard will hold a press conference about the search for the missing submersible in Boston at 1pm EDT (6pm UK time.).

14:52pm: Noises from search area are 'a target for rescuers'

Underwater noises detected in the search area of a missing deep-sea vessel is a “target” and a “focus” for the rescue operation, according to the US Coast Guard.

The US Coast Guard announced earlier today that the Canadian P-3 aircraft detected the noises.

The Coast Guard tweeted: “Three vessels arrived on-scene Wednesday morning, the John Cabot has side scanning sonar capabilities and is conducting search patterns alongside the Skandi Vinland and the Atlantic Merlin.”

An array of vessels are involved in the search effort, including Bahamian research vessel Deep Energy, French research vessel L’Atalante, His Majesty’s Canadian Ship Glace Bay – for a mobile decompression chamber and medical personnel – and four Canadian Coast Guard vessels, according to the US Coast Guard.

The Ministry of Defence (MoD) said the UK-based Nato Submarine Rescue System (NSRS) team is available to offer expertise and guidance to the search operation. But reports indicate the the depths involved in the search “greatly exceed” that which the NSRS can safely operate.

12:37pm: Fears Titan could have 'imploded'

An experienced diver who has viewed the Titanic wreckage says the submersible Titan could have imploded at the bottom of the Atlantic.

Michael Harris told Fox News the passengers could already be dead and there is nothing the rescuers can do.

"The worst situation is something happened to the hull and our fear is it imploded at around 3,200 meters," (10,000 feet) he said. "It's just a sad day for our industry."

12:28pm: OceanGate Expeditions survey wreck's decay

As well as tours of the Titanic, OceanGate Expeditions has been documenting the wreck's rate of decay.

Given the massive scale of the wreck and the debris field, the company planned 18 survey missions over several years to model the wreck site and collect images, videos, laser, and sonar data.

Qualified explorers were invited to join the expedition as Mission Specialists whose training and mission support fees would underwrite the mission.

12:05pm: 'They must be scared to death'

Retired US Navy master diver Jim Phalin told TalkTV's Mike Graham that the only hope for those on the Titan submersible is if they have "made an emergency ascent."

"Those depths exceed any kind of rescue the US has. Trying to get there in time is going to be a challenge."

Speaking about the passengers trapped inside the sub, Mr Phalin said "they must be scared to death."

"The water temperature down there is 30 degrees, it's dark, they won't have any power. It's just a very bad environment."

11:46am: France sends rescue ship

France’s oceanographic institute has sent a vessel equipped with a deep-sea robot to assist with the search for the missing submersible near the Titanic wreck, according to French officials.

The ROV (Remotely Operated underwater Vehicle) Victor 6000 released by Ifremer

The ship, the Atalante, is operated by Ifremer, an oceanographic institution. The robot can descend to a depth of 6,000 meters and the Titanic wreckage is located at a depth of 3,800 meters.

The Atalante was expected to arrive in Newfoundland, Canada, by Wednesday evening local time.

11:32am: How much oxygen does the submersible have left?

Rescue teams are racing against the breathable air clock after noises were detected from the search area for the missing deep-sea vessel near the wreck site of the Titanic.

The submersible, named Titan, lost communication with tour operators on Sunday while about 435 miles south of St John’s, Newfoundland, during a voyage to the shipwreck off the coast of Canada.

The Titan has five people on board, including British billionaire adventurer Hamish Harding, and the 6.7m (22ft) long OceanGate Expeditions vessel may have as little as 24 hours of oxygen left.

The others on board are Shahzada Dawood, his son Suleman and OceanGate’s chief executive and founder Stockton Rush, reportedly together with French submersible pilot Paul-Henry Nargeolet.

11:11am: 'The conservations that must be happening in that tube doesn't bear thinking about'

The Sun’s Jerome Starkey spoke to TalkTV's Mike Graham about reports that noises were detected from the search area of the missing Titanic tourist submersible.

He said: "It's a standard practice for stricken submarines in distress for the crew to knock on the side of the hull every half an hour to attract attention, to alert people that they are alive.

"But there’s conflicting reports suggesting that US military officials believe that they heard the sound of an implosion, which would suggest the very worst - that the Titan had exploded and everyone on board would be dead.

"What seems to be most surprising about this is there doesn't seem to have been a contingency plan in place.

"The conversations that must be happening in that tube... the conversations between a father and his 19-year-old son as they contemplate running out of oxygen. It doesn't bear thinking about."

10:37am: ‘I’m sick to my stomach with nerves’

Briton Hamish Harding is on board the Titan and said on social media he was one of the "mission specialists."

Jannicke Mikkelsen is a friend of Harding and fellow explorer: "I'm nervous. I'm sick to my stomach with nerves, I'm terrified, I'm anxious. I'm not sleeping at the moment. I'm just hoping for good news.

"Every single second, every single minute feels like hours. And we're losing time. And we're losing opportunity to find them alive.

"I last spoke to Hamish right before his dive. He casually just wrote that he's on his way to the Titanic and he's waiting for the perfect weather window.

“And me in an equally casual way just answered 'Godspeed, Hamish', and left it at that because he's always exploring. And I didn't consider that this type of expedition would be as dangerous as it's turned out to be.”

10:20am: 'There isn't a rescue submarine that can get to that depth'

The Sun’s defence editor Jerome Starkey told TalkTV's Ian Collins that the depth of the water the submersible is in is "way beyond the reach of any known submarine."

"All of the people who are experts in this area have been very clear that the prospects for the people on board the Titan are very bleak. It is inherently dangerous to do what they have done.

"There isn't a rescue submarine that can get to that depth."

There is speculation about how much oxygen is left on the submersible for the passengers. Mr Starkey said: "In the event of something going wrong, you can expect people may be panicking and consuming that oxygen at a slightly faster rate."

He suggested there were two possible scenarios for what might have gone wrong on the journey: either the pilot has lost the capability to control or manoeuvre the vessel, or the pressure hull has failed.

With the latter, he said: "If that is the case, they will all be dead instantly, and there will be very little left of the Titan."

10:19am: 'More perilous than going into space'

Oceanography expert Dr Simon Boxall tells TalkTV’s Vanessa Feltz that going down to search for the missing sub near the Titanic wreckage, is "more perilous than going into space", highlighting the dangers of deep sea exploration.

He says there is a race against time as the missing sub’s air supply runs out on Thursday but it’s not that easy to get specialist equipment out to the area in time.

Dr Boxall suggests the amount of rubble in the area being searched could make it very difficult to find the missing submersible, even going as far as saying "they'd need to almost trip over it."

10:09am: Titan submersible is bolted from the outside

Rescuers face major obstacles both in finding the Titan and in saving the people aboard, according to experts.

In the event of a mid-dive emergency, the Titan's pilot would likely have released weights to float back to the surface, according to Alistair Greig, a marine engineering professor at University College London. But absent communication, locating a van-sized submersible in the vast Atlantic would prove challenging, he said.

The submersible is sealed with bolts from the outside, preventing occupants from escaping without assistance even if it surfaces.

If the Titan were stuck on the ocean floor, a rescue effort would face even greater challenges due to extreme hydrostatic pressure and total darkness on the sea floor more than 2 miles deep. Titanic expert Tim Matlin said it would be "almost impossible to effect a sub-to-sub rescue" on the seabed.

09:26am: 'There are so many sounds out there in the ocean'

Former NATO submarine commander Roger Lane-Nott told TalkTV's Julia Hartley-Brewer he "has doubts" over the ‘banging sounds’ heard by rescuers searching for the missing Titanic sub.

"I've spent a lot of time underwater, and there are all sorts of sounds under there", he continued, "they are clutching at straws, there are so many sounds out there in the ocean. It's a very imprecise art trying to classify noises."

Speaking about what kind of state the passengers onboard might be in, Mr Lane-Nott said: "They'll be getting uncomfortable, they'll be talking about what else they can do."

08:47am: First journalist to visit Titanic wreck 'feels sick' for missing Titan passengers

Dr Michael Guillen, the first journalist to visit the Titanic wreckage for ABC News back in 2000, became emotional as he told TalkTV's Piers Morgan about his experience at the bottom of the Atlantic Ocean.

He told Piers he "felt sick" at the thought of the five passengers stuck in the submersible: "It's an awful feeling being stuck down there, they are utterly hopeless."

Dr Guillen described the feelings he experienced when the vessel he was on encountered difficulty, calling it an "utter sense of hopelessness".

"It's a very hostile environment down there - very cold, very high pressure.

"I thought, this is how it's going to end for me - those words came into my mind and I'll never forget them", he added.

08:23am: 'People are grasping at straws'

Speaking to TalkTV's Julia Hartley-Brewer, Former Royal Navy commander Dr Chris Parry said “people are grasping at straws” after rescuers searching for the Titanic sub heard 'banging sounds'.

“You get a lot of mechanical noise in the ocean. Trying to differentiate it from tapping noises is a fool’s errand.”

"I'm really concerned that we don't divert attention away from trying to find the submersible", he added.

Dr Parry also suggested there hadn't been nearly enough safety checks on the vessel, calling it "totally unregulated".

"The company admits on its paperwork that this is an experimental design", he continued, "it's quite extraordinary the risks people are taking to take part in this extreme tourism".

07:09am: Former sub passenger in a 'panic' before boarding

CBS reporter David Pogue and the Simpsons writer Mike Reiss, who have been on the Titan, described what it was like inside the vessel.

Pogue admits that he was in a panic the night before he boarded the submersible, but says his concerns were partly allayed when Stockton Rush, the CEO of the company that operates it, OceanGate, explained that "experimental, one-of-a-kind" Titan, uses consumer parts because they are the most reliable, and that the main capsule had been designed with the help of NASA.

"His exact words were ‘Everything else can fail. The lights can go out, the propellers can stop, but you will still be alive,” Pogue cited what Rush told him.

Reiss meanwhile said having communication problems is not that uncommon.

"On every trip I've taken, of the four separate dives I've taken with OceanGate, every time there was a problem with, at least, you know, sporadically communicating with the surface.

"And again, I don't think that's their fault as much as just that's the nature of the beast. You know, when you're going a thousand feet or 13,000 feet underwater, you're going to lose contact for a while."

6:00am: Noises heard underwater

A Canadian aircraft has detected “underwater noises” in the search area of the missing deep-sea vessel near the Titanic wreck, according to the US Coast Guard.

The Coast Guard said in a tweet: "Canadian P-3 aircraft detected underwater noises in the search area.

"As a result, Remotely Operated Vehicle (ROV) operations were relocated in an attempt to explore the origin of the noises. Those ROV searches have yielded negative results but continue.

"Additionally, the data from the P-3 aircraft has been shared with our U.S. Navy experts for further analysis which will be considered in future search plans."

A memo from the Department of Homeland Security (DHS) said banging sounds had been detected every 30 minutes on Tuesday.

Four hours later banging was still heard after additional sonar devices were deployed,

"RCC Halifax launched a P8, Poseidon, which has underwater detection capabilities from the air," the memo read.

"The P8 deployed sono-buoys, which reported a contact in a position close to the distress position."

05:35am: Rescue options 'fraught with chances of failure'

Rear Admiral Roger Lane-Nott told TalkTV's Jeremy Kyle there are two possible rescue scenarios.

"One is to use an unmanned, remotely operated vehicle (ROV). I don't know where they are located in the world, or even if they're trying to get them. I hope they are.

"The ROV can search but it needs to know where it's looking. Visibility is 10 yards at most, if you're lucky. It's pitch black down there and if the Titan has lost power and has no lights they've got no way of communicating.

"Most ROVs have grabs and pincers. In theory they could go and grab it if they found it and drag it up, but I'm not sure how feasible that is.

"The second option, which is more more difficult, is to lower a 30,000 foot wire and hook it up to Titan. But somebody has to hook it on. It will be left to an ROV to do that, if they've got one to put it on, then they've got to pull it up.

"Both options are fraught with danger and fraught with chances of failure more than success."

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