Titan Submersible Implosion
   HOME

TheInfoList



OR:

On 18 June 2023, ''Titan'', a
submersible A submersible is an underwater vehicle which needs to be transported and supported by a larger ship, watercraft or dock, platform. This distinguishes submersibles from submarines, which are self-supporting and capable of prolonged independent ope ...
operated by the American tourism and expeditions company OceanGate, imploded during an expedition to view the wreck of the ''Titanic'' in the
North Atlantic Ocean The Atlantic Ocean is the second largest of the world's five oceanic divisions, with an area of about . It covers approximately 17% of Earth's surface and about 24% of its water surface area. During the Age of Discovery, it was known for se ...
off the coast of
Newfoundland Newfoundland and Labrador is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region of Labrador, having a total size of . As of 2025 the population ...
, Canada. Aboard the submersible were Stockton Rush, the American
chief executive officer A chief executive officer (CEO), also known as a chief executive or managing director, is the top-ranking corporate officer charged with the management of an organization, usually a company or a nonprofit organization. CEOs find roles in variou ...
of OceanGate; Paul-Henri Nargeolet, a French deep-sea explorer and ''
Titanic RMS ''Titanic'' was a British ocean liner that sank in the early hours of 15 April 1912 as a result of striking an iceberg on her maiden voyage from Southampton, England, to New York City, United States. Of the estimated 2,224 passengers a ...
'' expert;
Hamish Harding George Hamish Livingston Harding (24 June 1964 – 18 June 2023) was a British businessman, pilot and adventurer based in the United Arab Emirates (UAE). He was the founder of Action Group and was chairman of Action Aviation, an international ...
, a British businessman;
Shahzada Dawood Shahzada Dawood (; 12 February 1975 – 18 June 2023) was a Pakistani businessman and philanthropist. Dawood, his 19-year-old son, Suleman, and three others were killed inside the submersible ''Titan'' when it imploded on a tourist expedition t ...
, a Pakistani-British businessman; and Dawood's son, Suleman. Communication between ''Titan'' and its
mother ship A mother ship, mothership or mother-ship is a large vehicle that leads, serves, or carries other smaller vehicles. A mother ship may be a maritime ship, aircraft, or spacecraft. Examples include bomber aircraft, bombers converted to carry exp ...
, , was lost 1 hour and 33 minutes into the dive. Authorities were alerted when it failed to resurface at the scheduled time later that day. After the submersible had been missing for four days, a
remotely operated underwater vehicle A remotely operated underwater vehicle (ROUV) or remotely operated vehicle (ROV) is a free-swimming submersible craft used to perform underwater observation, inspection and physical tasks such as valve operations, hydraulic functions and other g ...
(ROV) discovered a debris field containing parts of ''Titan'', about from the
bow BOW as an acronym may refer to: * Bag of waters, amniotic sac * Bartow Municipal Airport (IATA:BOW), a public use airport near Bartow, Florida, United States * Basic operating weight of an aircraft * BOW counties, made of Brown, Outagamie, and Winn ...
of the ''Titanic''. The search area was informed by the
United States Navy The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 millio ...
's (USN)
sonar Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances ( ranging), communicate with or detect objects o ...
detection of an acoustic signature consistent with an implosion around the time communications with the submersible ceased, suggesting the
pressure hull A submarine hull has two major components, the ''superstructure'' and the ''pressure hull''. The external portion of a submarine’s hull—that part that does not resist sea pressure and is free-flooding—is known as the “superstructure” i ...
had imploded while ''Titan'' was descending, resulting in the instantaneous deaths of all five occupants. The search and rescue operation was performed by an international team organized by the
United States Coast Guard The United States Coast Guard (USCG) is the maritime security, search and rescue, and Admiralty law, law enforcement military branch, service branch of the armed forces of the United States. It is one of the country's eight Uniformed services ...
(USCG), USN, and
Canadian Coast Guard The Canadian Coast Guard (CCG; ) is the coast guard of Canada. Formed in 1962, the coast guard is tasked with marine search and rescue (SAR), communication, navigation, and transportation issues in Canadian waters, such as navigation aids and i ...
. Support was provided by aircraft from the
Royal Canadian Air Force The Royal Canadian Air Force (RCAF; ) is the air and space force of Canada. Its role is to "provide the Canadian Forces with relevant, responsive and effective airpower". The RCAF is one of three environmental commands within the unified Can ...
and
United States Air National Guard The Air National Guard (ANG), also known as the Air Guard, is a federal military reserve force of the United States Air Force, as well as the air militia of each U.S. state, the District of Columbia, the Commonwealth of Puerto Rico, and the ter ...
, a
Royal Canadian Navy The Royal Canadian Navy (RCN; , ''MRC'') is the Navy, naval force of Canada. The navy is one of three environmental commands within the Canadian Armed Forces. As of February 2024, the RCN operates 12 s, 12 s, 4 s, 4 s, 8 s, and several auxiliary ...
ship, as well as several commercial and research vessels and ROVs. Numerous industry experts had stated concerns about the safety of the vessel. OceanGate executives, including Rush, had not sought certification for ''Titan'', arguing that excessive safety protocols and regulations hindered innovation.


Background


OceanGate

OceanGate was a private company, initiated in 2009 by Stockton Rush and
Guillermo Söhnlein Guillermo Söhnlein (born May 18, 1966) is an Argentine-American businessman, best known as the co-founder of deep-sea exploration company OceanGate. Söhnlein left the company in 2013, retaining a minority stake. Professional career In 1998 ...
. From 2010 until the loss of the ''Titan'' submersible, OceanGate transported paying customers in leased commercial submersibles off the coast of California, in the Gulf of Mexico, and in the Atlantic Ocean. The company was based in
Everett, Washington Everett (; ) is the county seat and most populous city of Snohomish County, Washington, United States. It is north of Seattle and is one of the main cities in the Seattle metropolitan area, metropolitan area and the Puget Sound region. Everett ...
, US. Rush realized that visiting shipwreck sites was a method of getting media attention. OceanGate had previously conducted voyages to other shipwrecks, including its 2016 dive to the wreck of aboard their other submersible ''Cyclops1''. (A near disaster on that expedition was recounted in '' Vanity Fair'' in 2023.) In 2019, Rush told ''Smithsonian'' magazine: "There's only one wreck that everyone knows... If you ask people to name something underwater, it's going to be sharks, whales, ''Titanic''".


''Titanic''

The ''
Titanic RMS ''Titanic'' was a British ocean liner that sank in the early hours of 15 April 1912 as a result of striking an iceberg on her maiden voyage from Southampton, England, to New York City, United States. Of the estimated 2,224 passengers a ...
'' was a British
ocean liner An ocean liner is a type of passenger ship primarily used for transportation across seas or oceans. Ocean liners may also carry cargo or mail, and may sometimes be used for other purposes (such as for pleasure cruises or as hospital ships). The ...
that sank in the North Atlantic Ocean on 15 April 1912, after colliding with an iceberg. More than 1,500 people died, making it the deadliest sinking of a single ship at the time. In 1985,
Robert Ballard Robert Duane Ballard (born June 30, 1942) is an American retired Navy officer and a professor of oceanography at the University of Rhode Island who is noted for his work in underwater archaeology (maritime archaeology and archaeology of ...
located the wreck of the ''Titanic'' from the coast of Newfoundland. The wreck lies at a depth of about . Since its discovery, it has been a destination for research expeditions and tourism. By 2012, 140 people had visited the wreck site.


Submersible ''Titan''

Formerly known as ''Cyclops 2'', ''
Titan Titan most often refers to: * Titan (moon), the largest moon of Saturn * Titans, a race of deities in Greek mythology Titan or Titans may also refer to: Arts and entertainment Fictional entities Fictional locations * Titan in fiction, fictiona ...
'' was a five-person submersible vessel operated by OceanGate Inc. The , vessel was constructed from
carbon fibre Carbon fiber-reinforced polymers (American English), carbon-fibre-reinforced polymers ( Commonwealth English), carbon-fiber-reinforced plastics, carbon-fiber reinforced-thermoplastic (CFRP, CRP, CFRTP), also known as carbon fiber, carbon comp ...
and
titanium Titanium is a chemical element; it has symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver color, low density, and high strength, resistant to corrosion in ...
. The entire pressure vessel consisted of two titanium hemispheres (domes) with matching titanium interface rings bonded to the internal diameter, carbon fibre-wound cylinder. One of the titanium hemispherical end caps could be detached to provide the hatch and was fitted with a
acrylic Acrylic may refer to: Chemicals and materials * Acrylic acid, the simplest acrylic compound * Acrylate polymer, a group of polymers (plastics) noted for transparency and elasticity * Acrylic resin, a group of related thermoplastic or thermosettin ...
window. In 2020, Rush said that the hull, originally designed to reach below sea level, had been downgraded to a depth rating of after demonstrating signs of cyclic fatigue. In 2020 and 2021, the hull was repaired or rebuilt. Rush told the ''Travel Weekly'' editor-in-chief that the carbon fibre had been sourced at a discount from
Boeing The Boeing Company, or simply Boeing (), is an American multinational corporation that designs, manufactures, and sells airplanes, rotorcraft, rockets, satellites, and missiles worldwide. The company also provides leasing and product support s ...
because it was too old for use in the company's airplanes. Boeing stated they have no records of any sale to Rush or to OceanGate. OceanGate had initially not sought certification for ''Titan'', arguing that excessive safety protocols hindered innovation.
Lloyd's Register Lloyd's Register Group Limited, trading as Lloyd's Register (LR), is a technical and professional services organisation and a maritime classification society, wholly owned by the Lloyd’s Register Foundation, a UK charity dedicated to research ...
, a ship classification society, refused OceanGate's request to class the vessel in 2019. ''Titan'' could move at as much as using four electric thrusters, arrayed two horizontal and two vertical. Its steering controls consisted of a Logitech F710 wireless
game controller A game controller, gaming controller, or simply controller, is an input device or Input/Output Device, input/output device used with video games or entertainment systems to provide input to a video game. Input devices that have been classified as ...
with modified longer analogue sticks resembling traditional
joysticks A joystick, sometimes called a flight stick, is an input device consisting of a stick that pivots on a base and reports its angle or direction to the device it is controlling. Also known as the control column, it is the principal control devic ...
. The University of Washington's Applied Physics Laboratory assisted with the control design on the ''Cyclops 1'' using a
DualShock 3 The DualShock (originally Dual Shock, trademarked as DUALSHOCK or DUAL SHOCK, with the PlayStation 5 version as DualSense) is a line of gamepads developed by Sony Interactive Entertainment (formerly Sony Computer Entertainment) for the PlayStati ...
video game controller, which was carried over to ''Titan'', substituting with the Logitech controller. The use of
commercial off-the-shelf Commercial-off-the-shelf or commercially available off-the-shelf (COTS) products are packaged or canned (ready-made) hardware or software, which are adapted aftermarket to the needs of the purchasing organization, rather than the commissioning of ...
game controllers is common for remote-controlled vehicles such as
unmanned aerial vehicle An unmanned aerial vehicle (UAV) or unmanned aircraft system (UAS), commonly known as a drone, is an aircraft with no human pilot, crew, or passengers onboard, but rather is controlled remotely or is autonomous.De Gruyter Handbook of Dron ...
s or
bomb disposal robot A bomb is an explosive weapon that uses the exothermic reaction of an explosive material to provide an extremely sudden and violent release of energy. Detonations inflict damage principally through ground- and atmosphere-transmitted mechanica ...
s, whilst the
United States Navy The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 millio ...
uses
Xbox 360 controller The Xbox 360 controller is the primary game controller for Microsoft's Xbox 360 home video game console that was introduced at E3 2005. The Xbox 360 controller comes in both wired and wireless versions. The Xbox controller is not compatible wit ...
s to control
periscopes A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer's current position. In its simplest form, it consists of an outer case with ...
in s. OceanGate claimed on its website that ''Titan'' was "designed and engineered by OceanGate Inc. in collaboration
ith The Ith () is a ridge in Germany's Central Uplands which is up to 439 m high. It lies about 40 km southwest of Hanover and, at 22 kilometers, is the longest line of crags in North Germany. Geography Location The Ith is i ...
experts from
NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States ...
, Boeing, and the
University of Washington The University of Washington (UW and informally U-Dub or U Dub) is a public research university in Seattle, Washington, United States. Founded in 1861, the University of Washington is one of the oldest universities on the West Coast of the Uni ...
" (UW). A -scale model of the ''Cyclops 2'' pressure vessel was built and tested at the Applied Physics Laboratory (APL) at UW; the model was able to sustain a pressure of , corresponding to a depth of about . After the disappearance of ''Titan'' in 2023, these earlier associates disclaimed involvement with the Titan project. UW claimed the APL had no involvement in the "design, engineering, or testing of the ''Titan'' submersible". A Boeing spokesperson also claimed Boeing "was not a partner on ''Titan'' and did not design or build it". A NASA spokesperson said that NASA's
Marshall Space Flight Center Marshall Space Flight Center (officially the George C. Marshall Space Flight Center; MSFC), located in Redstone Arsenal, Alabama (Huntsville, Alabama, Huntsville postal address), is the Federal government of the United States, U.S. government's ...
had a
Space Act Agreement Space Act Agreements (abbreviated SAA) are a type of legal agreement specified in the National Aeronautics and Space Act of 1958 (and subsequent congressional authorizations) that uniquely empowers the National Aeronautics and Space Administration ...
with OceanGate, but "did not conduct testing and manufacturing via its workforce or facilities". It was designed and developed originally in partnership with UW and Boeing, both of which put forth numerous design recommendations and rigorous testing requirements, which Rush ignored, despite prior tests at lower depths resulting in implosions at UW's lab. The partnerships dissolved as Rush refused to work within quality standards. According to OceanGate, the vessel contained monitoring systems to continuously monitor the strength of the
hull Hull may refer to: Structures * The hull of an armored fighting vehicle, housing the chassis * Fuselage, of an aircraft * Hull (botany), the outer covering of seeds * Hull (watercraft), the body or frame of a sea-going craft * Submarine hull Ma ...
. The vessel had life support for five people for 96 hours. There is no
GPS The Global Positioning System (GPS) is a satellite-based hyperbolic navigation system owned by the United States Space Force and operated by Mission Delta 31. It is one of the global navigation satellite systems (GNSS) that provide geol ...
underwater; the support ship, which monitored the position of ''Titan'' relative to its target, sent text messages to ''Titan'' providing distances and directions. According to OceanGate, ''Titan'' had several backup systems intended to return the vessel to the surface in case of emergency, including
ballast Ballast is dense material used as a weight to provide stability to a vehicle or structure. Ballast, other than cargo, may be placed in a vehicle, often a ship or the gondola of a balloon or airship, to provide stability. A compartment within ...
s that could be dropped, a balloon, thrusters, and sandbags held by hooks that dissolved after a certain number of hours in saltwater. Ideally, this would release the sandbags, allowing the vessel to float to the surface. An OceanGate investor explained that if the vessel did not ascend automatically after the elapsed time, those inside could help release the ballast either by tilting the ship back and forth to dislodge it or by using a pneumatic pump to loosen the weights.


Dives to wreck of ''Titanic''

Dives by ''Titan'' to the wreck of ''Titanic'' occurred as part of multi-day excursions organized by OceanGate, which the company referred to as "missions". Five missions occurred in the middle of 2021 and 2022. ''Titan'' imploded during the fifth mission of 2023; it was the first mission of the year in which a dive came close to ''Titanic'', due to poor weather during previous attempts. Passengers would sail to and from the wreckage site aboard a support ship and spend approximately five days on the ocean above the ''Titanic'' wreckage site. Two dives were usually attempted during each excursion, though dives were often cancelled or aborted due to weather or technical malfunctions. Each dive typically had a pilot, a guide, and three paying passengers aboard. Once they were inside the submersible, the hatch would be bolted shut and could only be reopened from the outside. The descent from the surface to the ''Titanic'' wreck typically took two hours, with the full dive taking about eight hours. Throughout the journey, the submersible was expected to emit a safety
ping Ping may refer to: Arts and entertainment Fictional characters * Ping, a domesticated Chinese duck in the illustrated book '' The Story about Ping'', first published in 1933 * Ping, a minor character in ''Seinfeld'', an NBC sitcom * Pingg, a ...
every 15 minutes to be monitored by the above-water crew. The vessel and surface crew were also able to communicate via brief text messages. Customers who travelled to the wreck with OceanGate, referred to as "mission specialists" by the company, paid each for the eight-day expedition. OceanGate intended to perform multiple dives to the ''Titanic'' wreck in 2023, but the dive in which ''Titan'' was destroyed was the only one the company had launched that year.


Safety

Because ''Titan'' operated in
international waters The terms international waters or transboundary waters apply where any of the following types of bodies of water (or their drainage basins) transcend international boundaries: oceans, large marine ecosystems, enclosed or semi-enclosed region ...
and did not carry passengers from a port, it was not subject to safety regulations. The vessel was not certified as seaworthy by any regulatory agency or third-party organization. Reporter
David Pogue David Welch Pogue (born March 9, 1963) is an American technology and science writer and TV presenter, and correspondent for ''CBS News Sunday Morning''. He has hosted 18 ''Nova'' specials on PBS, including '' Nova ScienceNow'', the ''Making Stu ...
, who completed the expedition in 2022 as part of a ''
CBS News Sunday Morning ''CBS News Sunday Morning'' (frequently shortened to ''Sunday Morning'') is an American television newsmagazine that has aired on CBS since January 28, 1979. Created by Robert Northshield and E.S. "Bud" Lamoreaux III, and originally hosted by ...
'' feature, said that all passengers who enter ''Titan'' sign a waiver confirming their knowledge that it is an "experimental" vessel "that has not been approved or certified by any regulatory body, and could result in physical injury, disability, emotional trauma or death". Television producer
Mike Reiss Michael L. Reiss ( '; born September 15, 1959) is an American television comedy writer. He served as a showrunner, writer, and producer for the animated series ''The Simpsons'' and co-created the animated series ''The Critic''. He created and ...
, who also completed the expedition, said the waiver "mention death three times on page one". A 2019 article published in ''Smithsonian'' magazine referred to Rush as a "daredevil inventor". In the article, Rush is described as having said that the U.S. Passenger Vessel Safety Act of 1993 "needlessly prioritized passenger safety over commercial innovation". In a 2022 interview, Rush told ''CBS News'', "At some point, safety just is pure waste. I mean, if you just want to be safe, don't get out of bed. Don't get in your car. Don't do anything." Rush said in a 2021 interview, "I've broken some rules to make 'Titan'' I think I've broken them with logic and good engineering behind me. The carbon fibre and titanium, there's a rule you don't do that. Well, I did." OceanGate claimed that ''Titan'' was the only crewed submersible that used an integrated real-time monitoring system (RTM) for safety. The proprietary system, patented by Rush in 2021, used acoustic sensors and strain gauges at the pressure boundary to analyse the effects of increasing pressure as the watercraft ventured deeper into the ocean and to monitor the hull's integrity in real time. This would supposedly give early warning of problems and allow enough time to abort the descent and return to the surface.


Prior concerns

In 2018, OceanGate's director of marine operations, David Lochridge, composed a report documenting safety concerns he had about ''Titan''. In court documents, Lochridge said that he had urged the company to have ''Titan'' assessed and certified by the
American Bureau of Shipping The American Bureau of Shipping (ABS) is an American maritime classification society established in 1862. Its stated mission is to promote the security of life, property, and the natural environment, primarily through the development and verific ...
, but OceanGate had refused to do so, instead seeking classification from
Lloyd's Register Lloyd's Register Group Limited, trading as Lloyd's Register (LR), is a technical and professional services organisation and a maritime classification society, wholly owned by the Lloyd’s Register Foundation, a UK charity dedicated to research ...
. He also said that the transparent viewport on its forward end, due to its nonstandard and therefore experimental design, was only certified to a depth of , only a third of the depth required to reach the ''Titanic'' wreck. According to Lochridge, RTM would "only show when a component is about to fail – often milliseconds before an implosion" and could not detect existing flaws in the hull before it was too late. Lochridge was also concerned that OceanGate would not perform
nondestructive testing Nondestructive testing (NDT) is any of a wide group of analysis techniques used in science and technology industry to evaluate the properties of a material, component or system without causing damage. The terms nondestructive examination (NDE), n ...
on the vessel's hull before undertaking crewed dives and alleged that he was "repeatedly told that no scan of the hull or Bond Line could be done to check for
delamination Delamination is a mode of failure where a material fractures into layers. A variety of materials, including Lamination, laminate Composite material, composites and concrete, can fail by delamination. Processing can create layers in materials, suc ...
s,
porosity Porosity or void fraction is a measure of the void (i.e. "empty") spaces in a material, and is a fraction of the volume of voids over the total volume, between 0 and 1, or as a percentage between 0% and 100%. Strictly speaking, some tests measure ...
and
voids Void may refer to: Science, engineering, and technology * Void (astronomy), the spaces between galaxy filaments that contain no galaxies * Void (composites), a pore that remains unoccupied in a composite material * Void, synonym for vacuum, ...
of sufficient adhesion of the glue being used due to the thickness of the hull". The viewport was rated to only , and the engineer of the viewport also prepared an analysis from an independent expert that concluded the design would fail after only a few dives. OceanGate said that Lochridge, who was not an engineer, had refused to accept safety approvals from OceanGate's engineering team and that the company's evaluation of ''Titan'' hull was stronger than any kind of third-party evaluation Lochridge thought necessary. OceanGate sued Lochridge for allegedly breaching his confidentiality contract and making fraudulent statements. Lochridge counter-sued, stating that his employment had been wrongfully terminated as a whistleblower for stating concerns about ''Titan'' ability to operate safely. The two parties
settled A settler or a colonist is a person who establishes or joins a permanent presence that is separate to existing communities. The entity that a settler establishes is a settlement. A settler is called a pioneer if they are among the first settli ...
the case a few months later, before it came to court. He filed a whistleblower complaint with
Occupational Safety and Health Administration The Occupational Safety and Health Administration (OSHA; ) is a regulatory agency of the United States Department of Labor that originally had federal visitorial powers to inspect and examine workplaces. The United States Congress established ...
, but withdrew it after the lawsuit was filed. Later in 2018, a group organized by William Kohnen, the chair of the Submarine Group of the
Marine Technology Society The Marine Technology Society (MTS) is a professional society that serves an international community of approximately 2,000 ocean engineers, technologists, policy-makers, and educators. The goal of the society, which was founded in 1963, is to pro ...
, drafted a letter to Rush expressing "unanimous concern regarding the development of 'TITAN' and the planned ''Titanic'' Expedition", indicating that the "current experimental approach ... could result in negative outcomes (from minor to catastrophic) that would have serious consequences for everyone in the industry". The letter said that OceanGate's marketing of the Titan was misleading because it claimed that the submersible would meet or exceed the safety standards of classification society DNV, even though the company had no plans to have the craft certified formally by the society. While the letter was never sent officially by the Marine Technology Society, it did result in a conversation with OceanGate that resulted in some changes, but in the end Rush "agreed to disagree" with the rest of the civilian submarine community. Kohnen told ''
The New York Times ''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of ...
'' that Rush had telephoned him after reading it to tell him that he believed industry standards were stifling innovation. Another signatory, engineer Bart Kemper, agreed to sign the letter because of OceanGate's decision not to use established engineering standards like ASME Pressure Vessels for Human Occupancy (PVHO) or design validation. Kemper said the submersible was "experimental, with no oversight". Kohnen and Kemper stated OceanGate's methods were not representative of the industry. Kohnen and Kemper are both members of the ASME Codes and Standards committee for PVHOs, which develops and maintains the engineering safety standards for submarines, commercial diving systems, hyperbaric systems, and related equipment. Kemper is an engineering researcher who has published a number of technical papers on submarine windows, including the need to innovate. In March 2018, one of Boeing's engineers involved in the preliminary designs, Mark Negley, carried out an analysis of the hull and emailed Rush directly stating, "We think you are at high risk of a significant failure at or before you reach 4,000 meters. We do not think you have any safety margin." He included a graph of the strain of the design with a
skull and crossbones A skull and crossbones is a symbol consisting of a human skull and two long bones crossed together under or behind the skull. The design originated in the Late Middle Ages as a symbol of death and especially as a ''memento mori'' on tombstones. ...
at a red line of 4,000 meters. Also in March 2018, Rob McCallum, a major deep sea exploration specialist, emailed Rush to warn him he was potentially risking his clients' safety and advised against the submersible's use for commercial purposes until it had been tested independently and classified: "I implore you to take every care in your testing and sea trials and to be very, very conservative." Rush replied that he was "tired of industry players who try to use a safety argument to stop innovation ... We have heard the baseless cries of 'you are going to kill someone' way too often. I take this as a serious personal insult". McCallum then sent Rush another email in which he said: "I think you are potentially placing yourself and your clients in a dangerous dynamic. In your race to ''Titanic'' you are mirroring that famous catch cry: 'She is unsinkable. This prompted OceanGate's lawyers to threaten McCallum with legal action. In 2022, the British actor and television presenter
Ross Kemp Ross James Kemp (born 21 July 1964) is an English actor, author, and television presenter. He rose to prominence in the role of Grant Mitchell in the BBC soap opera ''EastEnders''. His other roles include Graham Lodsworth in ''Emmerdale'' and ...
, who had participated previously with deep sea dives for the television channel
Sky History History (known as Sky History in the UK and Ireland) is a European Documentary film, documentary television channel which broadcasts programs related to History, historical events and persons. There are also reality television, ufology and para ...
, had planned to mark the 110th anniversary of the sinking of the ''Titanic'' by recording a documentary in which he would undertake a dive to the wreck using ''Titan''. Kemp's agent
Jonathan Shalit Jonathan Sigmund Shalit (born 17 April 1962) is a British talent manager and chairman of the InterTalent Rights Group, formerly ROAR Global and Cole Kitchenn. InterTalent represents household names across broadcasting, film, television, theatr ...
said that the project was cancelled after checks by production company
Atlantic Productions Atlantic Productions is a British production company based in London that produces television programmes for broadcasters in Europe and the United States. Overview Founded in 1992, Atlantic Productions leads a group of companies which make telev ...
deemed the submersible to be unsafe and not "fit for purpose".


Previous incidents

In 2021, a new hull was constructed after a previous hull had cracked after 50 submersion dives, only three of which were to 4,000 m. Scale models of the new hull imploded when tested at the UW lab, so a different method of curing the hull was developed and passed a full-sized pressure test at a facility in
Maryland Maryland ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. It borders the states of Virginia to its south, West Virginia to its west, Pennsylvania to its north, and Delaware to its east ...
. Rush refused to construct new domes and their interface rings, instead instructing engineers to salvage and reuse those parts from the previous hull. Anonymous former employees told ''Wired'' that damage to the rings could have weakened the joints between the domes and the new hull. The new submersible also included lifting rings, which had previously been warned against by engineers, as the submersible's titanium parts could not handle the associated tension or load. In 2022, reporter
David Pogue David Welch Pogue (born March 9, 1963) is an American technology and science writer and TV presenter, and correspondent for ''CBS News Sunday Morning''. He has hosted 18 ''Nova'' specials on PBS, including '' Nova ScienceNow'', the ''Making Stu ...
was aboard the surface ship when ''Titan'' became lost and could not locate the wreck of the ''Titanic'' during a dive. Pogue's December 2022 report for ''
CBS News Sunday Morning ''CBS News Sunday Morning'' (frequently shortened to ''Sunday Morning'') is an American television newsmagazine that has aired on CBS since January 28, 1979. Created by Robert Northshield and E.S. "Bud" Lamoreaux III, and originally hosted by ...
'', which questioned ''Titan'' safety,
went viral Viral phenomena or viral sensations are objects or patterns that are able to replicate themselves or convert other objects into copies of themselves when these objects are exposed to them. Analogous to the way in which viruses propagate, the te ...
on social media after the submersible lost contact with its support ship in June 2023. In the report, Pogue commented to Rush that "it seems like this submersible has some elements of MacGyvery jerry-rigged-ness". He said that a $30 Logitech F710 wireless game controller with modified control sticks was used to steer and pitch the submersible and that construction pipes were used as
ballast Ballast is dense material used as a weight to provide stability to a vehicle or structure. Ballast, other than cargo, may be placed in a vehicle, often a ship or the gondola of a balloon or airship, to provide stability. A compartment within ...
. In another 2022 dive to the wreck, one of ''Titan'' thrusters was accidentally installed backwards and the submersible started spinning in circles when trying to move forward near the sea floor. According to the
BBC The British Broadcasting Corporation (BBC) is a British public service broadcaster headquartered at Broadcasting House in London, England. Originally established in 1922 as the British Broadcasting Company, it evolved into its current sta ...
documentary ''Take Me to Titanic'', the issue was bypassed by steering while holding the game controller sideways. According to November 2022 court filings, OceanGate reported that in a 2022 dive, the submersible suffered from battery problems and as a result had to be attached manually to a lifting platform, causing damage to external components. On 15 July 2022 (dive 80), ''Titan'' experienced a "loud acoustic event" as it was ascending, which was heard by the passengers aboard and picked up by ''Titan'' real-time monitoring system (RTM). Data from ''Titan'' strain gauges later revealed that the hull's strain response had permanently shifted following this event. The US Coast Guard investigation found that the loud acoustic event was the carbon fibre delaminating, and that every dive after this one was a disaster waiting to happen.


Incident


Expedition arrangements

The voyage was booked in early 2023. Rush offered Jay Bloom, an American businessman, two discounted tickets, intending for Bloom and his son to be on the excursion. Bloom, a billionaire, was offered a price of $150,000 per seat, rather than the full price of $250,000, with Rush claiming that it was "safer than crossing the street", but Bloom declined the offer due to his concerns about its safety. At that time, the excursion was scheduled for May, but unfavourable weather caused it to be delayed until June.


16–17 June preparations

On 16 June 2023 at 9:31 a.m., (local time; 12:01
UTC Coordinated Universal Time (UTC) is the primary time standard globally used to regulate clocks and time. It establishes a reference for the current time, forming the basis for civil time and time zones. UTC facilitates international communica ...
) the expedition to the ''Titanic'' wreck, which the company referred to as "Mission 5," departed from St. John's, Newfoundland, aboard the Canadian-flagged research and expedition ship . One of the occupants,
Hamish Harding George Hamish Livingston Harding (24 June 1964 – 18 June 2023) was a British businessman, pilot and adventurer based in the United Arab Emirates (UAE). He was the founder of Action Group and was chairman of Action Aviation, an international ...
, posted on Facebook: "Due to the worst winter in Newfoundland in 40 years, this mission is likely to be the first and only crewed mission to ''Titanic'' in 2023. A weather window has just opened up and we are going to attempt a dive tomorrow." He also indicated that the operation was scheduled to begin about 4:00 a.m. EDT (08:00 UTC).


18 June, dive, disappearance, and implosion

The ship arrived in vicinity of the ''Titanic'' wreck site on 18 June 5:15 a.m.
Newfoundland Daylight Time The Newfoundland Time Zone (NT) is a geographic region that keeps time by subtracting 3.5 hours from Coordinated Universal Time ( UTC) during standard time, resulting in UTC−03:30; or subtracting 2.5 hours during daylight saving time. The clock ...
(NDT; UTC−02:30). Around 8:30 a.m., five people were on-boarded into the ''Titan'' mounted on top of a floating platform, known as the launch and recovery system (LARS). Subsequently, the forward dome was secured for the expedition designated by the company as "Dive 88". At 8:55 a.m., the platform was vented, causing it to sink below the surface of the water. At 9:18 a.m., ''Titan'' disengaged from the platform and commenced diving. For the first hour and a half of the descent, ''Titan'' communicated with ''Polar Prince'' via text about every 15 minutes and received a "ping" every 5–10 seconds. At a depth of , the submarine sent "all good here", and usual "pings" continued on the communications channel. There were no messages during the descent that indicated trouble. A final text communication was sent from ''Titan'' at 10:47:27 a.m., at an approximate depth of which read "dropped two wts". The final "ping" (data) from ''Titan'' was received at 10:47:33 a.m. NDT (13:17:33
UTC Coordinated Universal Time (UTC) is the primary time standard globally used to regulate clocks and time. It establishes a reference for the current time, forming the basis for civil time and time zones. UTC facilitates international communica ...
), at depth of . ''Titan's'' location was . Before this final text was received, a loud bang was heard by people monitoring the submersible on the support ship. It transpired that this bang was the implosion of the submersible, the sound from which travelled faster than the message. A U.S. Navy acoustic detection system designed to locate military submarines detected an acoustic signal consistent with an implosion at 11:04 a.m. (13:34 UTC), less than two hours after ''Titan'' submerged. OceanGate had not informed any government agency that they were diving. Since the small composite submersible did not conform to known acoustic profiles of large military submarines with metal hulls, it was classed as "an anomaly". Shortly after the disaster,
James Cameron James Francis Cameron (born August 16, 1954) is a Canadian filmmaker, who resides in New Zealand. He is a major figure in the post-New Hollywood era and often uses novel technologies with a Classical Hollywood cinema, classical filmmaking styl ...
indicated that it was likely that the submersible's early warning system alerted the passengers to an impending delamination of the hull, saying "we understand from inside the community that they had dropped their ascent weights and were coming up, trying to manage an emergency." In a 2024 interview with ''60 Minutes Australia'', Cameron stated that "nobody could admit that they didn't have the means to go down and look", referring to the limitations faced by parties attempting to reach the last known position. Oceanographer
Bob Ballard Robert Duane Ballard (born June 30, 1942) is an American retired Navy officer and a professor of oceanography at the University of Rhode Island who is noted for his work in underwater archaeology (maritime archaeology and archaeology of sh ...
, the discoverer of the ''Titanic'' wreck, also said that the crew was likely "experiencing difficulties" and was trying to ascend at the time of the implosion. In September 2024, Tym Catterson, an OceanGate contractor who was aboard the ''Polar Prince'' at the time of the disaster, testified at the United States Coast Guard's inquiry that there was no indication the crew was aware of any problems before the implosion. The last human-written communication by ''Titan'' indicated that they dropped two weights, amounting to about of the to of dropweights on board. This was apparently routine to adjust the ''Titan''s buoyancy from negative to neutral as it approached the seabed, and was an indication that the crew was not aware of any emergency situation. The last automatic ping was received by the ''Polar Prince'' approximately six seconds later, after which contact was lost. Simulations developed in 2023 suggest that due to the immense pressure – nearly 400 atm, or 6,000
psi Psi, PSI or Ψ may refer to: Alphabetic letters * Psi (Greek) (Ψ or ψ), the twenty-third letter of the Greek alphabet * Psi (Cyrillic), letter of the early Cyrillic alphabet, adopted from Greek Arts and entertainment * "Psi" as an abbreviat ...
– implosion of the vessel likely took only tens of milliseconds, fast enough to kill the occupants before they became aware of it.


18–22 June, search and rescue efforts

The submersible was expected to resurface at 4:30 p.m. (19:00 UTC). At 7:10 p.m. (21:40 UTC), the U.S. Coast Guard was notified that the vessel was missing. The Navy reviewed its acoustic data from that time and passed the information about the possible implosion event to the Coast Guard. ''Titan'' had as much as 96 hours of breathable air supply for its five passengers when it set out, which would have expired on the morning of 22 June 2023 if the submersible had remained intact. The
United States Coast Guard The United States Coast Guard (USCG) is the maritime security, search and rescue, and Admiralty law, law enforcement military branch, service branch of the armed forces of the United States. It is one of the country's eight Uniformed services ...
,
United States Navy The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 millio ...
, and
Canadian Coast Guard The Canadian Coast Guard (CCG; ) is the coast guard of Canada. Formed in 1962, the coast guard is tasked with marine search and rescue (SAR), communication, navigation, and transportation issues in Canadian waters, such as navigation aids and i ...
organized the search. Aircraft from the
Royal Canadian Air Force The Royal Canadian Air Force (RCAF; ) is the air and space force of Canada. Its role is to "provide the Canadian Forces with relevant, responsive and effective airpower". The RCAF is one of three environmental commands within the unified Can ...
and
United States Air National Guard The Air National Guard (ANG), also known as the Air Guard, is a federal military reserve force of the United States Air Force, as well as the air militia of each U.S. state, the District of Columbia, the Commonwealth of Puerto Rico, and the ter ...
, a
Royal Canadian Navy The Royal Canadian Navy (RCN; , ''MRC'') is the Navy, naval force of Canada. The navy is one of three environmental commands within the Canadian Armed Forces. As of February 2024, the RCN operates 12 s, 12 s, 4 s, 4 s, 8 s, and several auxiliary ...
ship, and several commercial and research ships and
remotely operated underwater vehicle A remotely operated underwater vehicle (ROUV) or remotely operated vehicle (ROV) is a free-swimming submersible craft used to perform underwater observation, inspection and physical tasks such as valve operations, hydraulic functions and other g ...
(ROVs) also assisted with the search. The surface was searched, as were the depths by
sonar Sonar (sound navigation and ranging or sonic navigation and ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances ( ranging), communicate with or detect objects o ...
. Crews from the United States Coast Guard launched search missions from the shore of
Cape Cod, Massachusetts Cape Cod is a peninsula extending into the Atlantic Ocean from the southeastern corner of Massachusetts, in the northeastern United States. Its historic, maritime character and ample beaches attract heavy tourism during the summer months. The ...
.
Joint Rescue Coordination Centre Halifax The Joint Rescue Coordination Centre Halifax (JRCC Halifax) is a rescue coordination centre operated by the Royal Canadian Air Force (RCAF) and the Canadian Coast Guard (CCG). JRCC Halifax is responsible for coordinating the Search and Rescue (SAR ...
reported that a Royal Canadian Air Force
Lockheed CP-140 Aurora The Lockheed CP-140 Aurora is a maritime patrol aircraft operated by the Royal Canadian Air Force. The aircraft is based on the Lockheed P-3 Orion airframe, but mounts the electronics suite of the Lockheed S-3 Viking. "Aurora" refers to the R ...
aircraft and CCGS ''Kopit Hopson 1752'' were participating in the search in response to a request for assistance by the Maritime Rescue Coordination Center in Boston made on 18 June at 9:43 p.m. (00:13 UTC). The search on 19 June involved three
C-130 Hercules The Lockheed C-130 Hercules is an American four-engine turboprop military transport aircraft designed and built by Lockheed Corporation, Lockheed (now Lockheed Martin). Capable of using unprepared runways for takeoffs and landings, the C-130 w ...
aircraft, two from the United States and one from Canada; a
P-8 Poseidon The Boeing P-8 Poseidon is an American maritime patrol aircraft, maritime patrol and reconnaissance aircraft developed and produced by Boeing Defense, Space & Security. It was developed for the United States Navy as a derivative of the civilian ...
anti-submarine warfare Anti-submarine warfare (ASW, or in the older form A/S) is a branch of underwater warfare that uses surface warships, aircraft, submarines, or other platforms, to find, track, and deter, damage, or destroy enemy submarines. Such operations ar ...
aircraft from the United States, and
sonobuoy A sonobuoy (a portmanteau of sonar and buoy) is a small expendable sonar buoy dropped from aircraft or ships for anti-submarine warfare or underwater acoustic research. Sonobuoys are typically around in diameter and long. When floating on t ...
s. Search and rescue was hampered by low-visibility weather conditions, which cleared the next day. The U.S. Coast Guard indicated that the search and rescue mission was difficult because of the remote location, weather, darkness, sea conditions, and water temperature. Rear Admiral John Mauger said that they were "deploying all available assets". Many submersibles have acoustic beacons that can be detected underwater by rescuers; ''Titan'' did not. The
pipe-laying ship A pipelaying ship is a maritime vessel used in the construction of subsea infrastructure. It serves to connect oil production platforms with refineries on shore. To accomplish this goal a typical pipelaying vessel carries a heavy lift crane, used ...
''Deep Energy'', operated by
TechnipFMC TechnipFMC plc is a French-American, UK-domiciled global oil and gas company that provides services for the energy industry. The company was formed by the merger of FMC Technologies of the United States and Technip of France that was announced in ...
, arrived on site on 20 June 2023, with two ROVs and other equipment suited to the seabed depths in the area. As of 10:45 a.m. (13:15 UTC), the U.S. Coast Guard had searched . The New York Air National Guard's
106th Rescue Wing The 106th Rescue Wing (106th RQW) is a unit of the New York Air National Guard, stationed at Francis S. Gabreski Air National Guard Base, Westhampton Beach, New York. If activated to federal service, the Wing is gained by the United States Air ...
joined in the search and rescue mission with a HC-130J, with plans for two more to join by the end of the day."New York Air National Guard assisting in search for missing Titanic submersible"
. WABC-TV. 21 June 2023. Retrieved 24 June 2023.
According to an internal U.S. government memo, a Canadian CP-140 Aurora's sonar picked up underwater noises while searching for the submersible. The U.S. Coast Guard officially acknowledged the sounds early the next morning, but reported that early investigations had not yielded results. Rear Admiral John Mauger of the U.S. Coast Guard said the source of the noise was unknown and may have come from the many metal objects at the site of the wreck. A Canadian CP-140 Aurora airplane had previously spotted a "white rectangular object" floating on the surface. A ship sent to find and identify the object was diverted to help find the source of the noise. The noises were later described by the U.S. Coast Guard as being apparently unrelated to the missing vessel. CCGS ''John Cabot'' arrived on the morning of 21 June, bringing additional sonar capabilities to the search effort. Commercial vessels ''Skandi Vinland'' and ''Atlantic Merlin'' also arrived that day, as did a US Coast Guard C-130 crew. As of about 3:00 p.m. (17:30 UTC), five air and water vehicles were searching actively for ''Titan'', and another five were expected to arrive in the next 24–48 hours. Search and rescue assets included two ROVs, one CP-140 Aurora aircraft, and the C-130 aircraft. The U.S. Navy's Flyaway Deep Ocean Salvage System (FADOSS), a ship lift system designed to lift large and heavy objects from the deep sea, arrived in St. John's, though no ships were available to carry the system to the wreck site. Officials estimated it would take about 24 hours to weld the FADOSS system to the deck of a carrier ship before it could set sail to the search and rescue operation. Despite increasing concerns about the depletion of air supplies in ''Titan'', a U.S. Coast Guard spokesperson said at a press conference "This is a search and rescue mission 100%", rather than a wreckage recovery mission. An ''Odysseus6k'' ROV from Pelagic Research Services, travelling aboard the Canadian-flagged offshore
tugboat A tugboat or tug is a marine vessel that manoeuvres other vessels by pushing or pulling them, with direct contact or a tow line. These boats typically tug ships in circumstances where they cannot or should not move under their own power, suc ...
MV '' Horizon Arctic'', reached the sea floor and began its search for the missing submersible. The French RV ''L'Atalante'' also deployed its ROV , which can reach depths of as much as and transmit images to the surface.


22 June, discovery of debris

At 1:18 p.m. (15:48 UTC) on 22 June the U.S. Coast Guard's Northeast Sector announced that a debris field had been found near the wreck of the ''Titanic''. The debris, located by Pelagic Research Services' ''Odysseus6k'' ROV five hours into its search, was later confirmed to be part of the submersible. At 4:30 p.m. (19:00 UTC) – at a U.S. Coast Guard press conference in Boston – the Coast Guard said that the loss of the submersible was due to an implosion of the pressure chamber and that pieces of ''Titan'' had been found on the sea floor about 1,600 feet (about 500 metres) northeast of the bow of the ''Titanic''. The identified debris consisted of the tail cone (not part of the pressure vessel) and the forward and aft end bells – both part of the pressure vessel intended to protect the crew from the ocean environment. According to the U.S. Coast Guard, the debris field was concentrated in two areas, with the aft end bell lying separate from the front end bell and the tail cone. Rear Admiral John Mauger of the US Coast Guard said that the debris was consistent with a "catastrophic loss of the pressure chamber". Mauger stated that he did not have an answer as to whether the bodies of those on board would be recovered, but he did say that it was "an incredibly unforgiving environment".


Fatalities

The implosion killed all five occupants:


Recovery operations

Pelagic Research Services confirmed on 23 June 2023 that a new mission to the ''Titan'' debris field was already underway and that it had taken the ''Odysseus 6k'' ROV one hour to reach the site to continue searching and documenting debris. It was further reported that the debris from ''Titan'' was too heavy for Pelagic's ROV to lift and that any recovery would need to occur at a later time. On 24 June, ''Polar Prince'' returned to St. John's harbour. In their bid to understand what caused ''Titan'' catastrophic loss, investigators boarded the support ship. Another boat was seen in the harbour towing the floating launch platform, which the company referred to as the launch and recovery system (LARS), which ''Titan'' used. On 28 June, ''Horizon Arctic'' returned to St. John's Harbour with the remains of ''Titan'' that were recovered from the debris field. Photographs and videos showed the titanium covers on both ends of ''Titan'' intact, with the single viewport missing, mangled pieces of the tail cone, electronics, the landing frame and other debris. The debris was to be transported to the U.S. as evidence for the investigation. The Coast Guard confirmed that presumed human remains were found within the debris, and that American medical professionals would conduct an analysis. Pelagic Research Services, which was operating the ''Odysseus 6K'' ROV from ''Horizon Arctic'', confirmed that its team had completed their mission. The initial human remains underwent DNA testing, but no report was released shortly after. In September 2024, during the public hearing by the Marine Board of Investigation, USCG confirmed that the Armed Forces DNA Identification Laboratory, located in Dover, Delaware, positively identified DNA profiles for the five victims. On 30 June, ''Insider'' published an analysis of the recovery photos by
University of Plymouth The University of Plymouth is a public research university based predominantly in Plymouth, England, where the main campus is located, but the university has campuses and affiliated colleges across South West England. With students, it is the ...
professor Jasper Graham-Jones. He concluded that a failure of the carbon-fibre hull was the most likely cause of the loss, given that no large pieces of carbon fibre are known to have been recovered. Another possible cause was the acrylic viewing window. He noted that the window was absent from its bell housing when it was recovered. While the salvage team may have removed the window before salvaging its bell housing, they more likely would have left it in place. However, Graham-Jones said that if the window had failed before the hull rather than after, he would have expected larger pieces of carbon fibre to be recovered. During early October, engineers recovered the rest of the debris and presumed human remains.


Investigations

On 23 June, both the Canadian and the United States federal governments announced that they were beginning investigations of the incident. They were joined by authorities from France (
Bureau d'Enquêtes sur les Événements de Mer Bureau ( ) may refer to: Agencies and organizations *Government agency *Public administration * News bureau, an office for gathering or distributing news, generally for a given geographical location * Bureau (European Parliament), the administr ...
, BEAmer) and the United Kingdom (
Marine Accident Investigation Branch The Marine Accident Investigation Branch (MAIB) is a UK government organisation, authorised to investigate all maritime accidents in UK waters and accidents involving UK registered ships worldwide. Investigations are limited to establishing ca ...
, MAIB) by 25 June; the final report will be issued to the
International Maritime Organization The International Maritime Organization (IMO; ; ) is a List of specialized agencies of the United Nations, specialized agency of the United Nations responsible for regulating maritime transport. The IMO was established following agreement at a ...
(IMO). Whether lasting reforms will result from the investigation is uncertain. While there are variety of possible options, the IMO may not have appropriate regulatory authority.


United States

The United States investigation is being directed by the
Coast Guard A coast guard or coastguard is a Maritime Security Regimes, maritime security organization of a particular country. The term embraces wide range of responsibilities in different countries, from being a heavily armed military force with cust ...
(USCG) with support from the
National Transportation Safety Board The National Transportation Safety Board (NTSB) is an independent U.S. government investigative agency responsible for civil transportation accident investigation. In this role, the NTSB investigates and reports on aviation accidents and inci ...
; the Coast Guard is taking control because it declared the incident a "major marine casualty". USCG Captain Jason Neubauer was named the chief investigator for a Marine Board of Investigation. Though at first it was anticipated to be completed within one year, the USCG eventually acknowledged it would take longer. "The investigation into the implosion of the ''Titan'' submersible is a complex and ongoing effort", said Neubauer in June 2024. "We are working closely with our domestic and international partners to ensure a comprehensive understanding of the incident." The public hearings for the Marine Board of Investigation were held 16–27 September 2024 in Charleston, South Carolina. They were convened under the joint authority of the NTSB and the US Coast Guard. All of the testimony was livestreamed through YouTube. In addition to providing the recorded testimony, the US Coast Guard provided over 100 exhibits, photos, animations, and other supporting documents on the MBI website. Notable testimony was provided by: Tony Nissen (former Director of Engineering, OceanGate); David Lochridge (former Director of Marine Operations and whistleblower, OceanGate); Patrick Lahey (CEO, Triton Submarines); Roy Thomas (Sr. Principal Engineer, American Bureau of Shipping); Phil Brooks (former Director of Engineering, OceanGate); Don Kramer (NTSB Materials Laboratory); William Kohnen (Hydrospace Group); Bart Kemper (Kemper Engineering Services); Justin Jackson (NASA); and Mark Negley (Boeing). There were a total of 25 witnesses who gave testimony during the MBI and two more "mission specialists" interviewed after the MBI hearings. Some of the key observations by the media include the repeated theme of putting cost above safety concerns; OceanGate's refusal to listen to safety concerns from staff such as David Lochridge or experts such as William Kohnen or Bart Kemper; and over 100 equipment issues over the two years prior to the final dive. In videos of the wreckage released by the US Coast Guard, evidence of the hull delaminating is present, and has been verified through analysis conducted by the NTSB following the retrieval of the wreckage . The analysis also details a number of other issues with the manufacture of the submersible. In order to achieve the required thickness of the hull, wrinkles in the hull were machined away and another layer of carbon fibre was glued onto it. The adhesive used was discovered to vary in thickness, and even contained voids, and caused uneven levels of adhesion to separate layers. Evidence of rubbing damage was discovered, where the adhesive had turned into a powder by the forces of delamination. Additionally, porosity was discovered in the manufacture of the hull. The analysis also contains details of the RTM system which OceanGate claimed would provide "early warning detection" . On Dive 80, July 15 2022, an extreme spike on one of the acoustic sensors was noted during the ascent to the surface. A loud bang was reported by the passengers during this dive, which Kramer determined was the cause for the spike. This coincided with anomalous strain readings, resulting in the next 3 dives following the spike containing a non-linear relationship between strain and depth, before settling back into a linear relationship. Whilst the analysis provides insight into the manufacturing defects present in the hull, investigations remain ongoing.


Canada

The
Transportation Safety Board of Canada The Transportation Safety Board of Canada (TSB, ), officially the Canadian Transportation Accident Investigation and Safety Board () is the agency of the Government of Canada responsible for advancing transportation safety in Canada. It is acc ...
(TSB) is investigating because ''Titan'' support vessel, MV ''Polar Prince'', is a Canadian-flagged ship. A team of TSB investigators headed to the port of origin, St. John's, Newfoundland, to "gather information, conduct interviews and assess the occurrence", with other agencies also expected to be involved. The
Royal Canadian Mounted Police The Royal Canadian Mounted Police (RCMP; , GRC) is the Law enforcement in Canada, national police service of Canada. The RCMP is an agency of the Government of Canada; it also provides police services under contract to 11 Provinces and terri ...
(RCMP) also announced that it was performing a preliminary examination of the incident in order to determine whether to begin a full investigation, which will occur if the RCMP determine criminal, federal, or provincial laws were broken.


Lawsuit

On 6 August 2024, Nargeolet's family sued OceanGate for wrongful death. The family of Nargeolet sought $50m in damages, claiming that OceanGate and Stockton Rush failed to disclose the condition and durability of the submersible as well as its composition and components. The lawsuit further alleges that many of the flaws with the vessel were not disclosed and purposely concealed. The lawsuit states that "experts agree that the Titan’s crew would have realized exactly what was happening", in relation to the implosion. The case was initially requested to move to a federal court in January 2025, but a federal judge moved it back to a state court by February. The lawsuit remains ongoing.


Financial costs of operations

Numerous assets from the
U.S. Air Force The United States Air Force (USAF) is the air service branch of the United States Department of Defense. It is one of the six United States Armed Forces and one of the eight uniformed services of the United States. Tracing its origins to 1 ...
and the U.S. Coast Guard were deployed to search for the submersible, and to subsequently retrieve the victims' remains. On 23 June 2023, a ''
Washington Post ''The Washington Post'', locally known as ''The'' ''Post'' and, informally, ''WaPo'' or ''WP'', is an American daily newspaper published in Washington, D.C., the national capital. It is the most widely circulated newspaper in the Washington m ...
'' analysis made by Mark Cancian, a defence budget expert, estimated the costs of U.S. Coast Guard operations alone at about
USD The United States dollar (symbol: $; currency code: USD) is the official currency of the United States and several other countries. The Coinage Act of 1792 introduced the U.S. dollar at par with the Spanish silver dollar, divided it int ...
$1.2 million of taxpayers' money as of 23 June 2023, with the additional operations to recover the submersible's debris not included. Cancian said that while the ''Titan'' search operation was funded by money already in the federal budget, the
U.S. military The United States Armed Forces are the military forces of the United States. U.S. federal law names six armed forces: the Army, Marine Corps, Navy, Air Force, Space Force, and the Coast Guard. Since 1949, all of the armed forces, except th ...
would assume some unexpected costs, since personnel and equipment were used in an unforeseen manner. Deploying a single
Lockheed CP-140 Aurora The Lockheed CP-140 Aurora is a maritime patrol aircraft operated by the Royal Canadian Air Force. The aircraft is based on the Lockheed P-3 Orion airframe, but mounts the electronics suite of the Lockheed S-3 Viking. "Aurora" refers to the R ...
aircraft and 341
sonobuoy A sonobuoy (a portmanteau of sonar and buoy) is a small expendable sonar buoy dropped from aircraft or ships for anti-submarine warfare or underwater acoustic research. Sonobuoys are typically around in diameter and long. When floating on t ...
s cost Canadian taxpayers at least
CAD$ The Canadian dollar (currency symbol, symbol: $; ISO 4217, code: CAD; ) is the currency of Canada. It is abbreviated with the dollar sign $. There is no standard disambiguating form, but the abbreviations Can$, CA$ and C$ are frequently used f ...
3 million, and the total Canadian contribution is likely to be much greater when all expenditures are tallied. Chris Boyer of the
National Association for Search and Rescue The National Association for Search and Rescue (NASAR) has been in existence since 1972. Originally started to represent the State Search and Rescue Coordinators, NASAR grew to represent all SAR volunteers and continues to support the State Search ...
said the search for ''Titan'' likely cost millions of dollars of public funds; however, the USCG refused to give an estimate, saying they "do not associate cost with saving a life". According to U.S. attorney Stephen Koerting, the USCG is generally prohibited by federal law from collecting reimbursement related to any search or rescue service. The incident renewed past debates about whether taxpayers should bear the cost of search and rescue missions involving wealthy people engaged in high-risk adventuring, such as incidents involving
Steve Fossett James Stephen Fossett (April 22, 1944 – September 3, 2007) was an American businessman and a record-setting aviator, sailor, and adventurer. He was the first person to fly solo nonstop around the world in a balloon and in a fixed-wing aircraf ...
and
Richard Branson Sir Richard Charles Nicholas Branson (born 18 July 1950) is an English business magnate who co-founded the Virgin Group in 1970, and controlled 5 companies remaining of once more than 400. Branson expressed his desire to become an entrepreneu ...
.


Reactions

Discussing the scale of the search and rescue response, Sean Leet, co-founder and chair of Horizon Maritime Services, the company that owns ''Polar Prince'', said: The scale of the search and rescue efforts and media coverage compared to those for the Messenia migrant boat disaster, which occurred days earlier, sparked criticism. In the
Ionian Sea The Ionian Sea (, ; or , ; , ) is an elongated bay of the Mediterranean Sea. It is connected to the Adriatic Sea to the north, and is bounded by Southern Italy, including Basilicata, Calabria, Sicily, and the Salento peninsula to the west, ...
off the coast of
Pylos Pylos (, ; ), historically also known as Navarino, is a town and a former Communities and Municipalities of Greece, municipality in Messenia, Peloponnese (region), Peloponnese, Greece. Since the 2011 local government reform, it has been part of ...
,
Messenia Messenia or Messinia ( ; ) is a regional unit (''perifereiaki enotita'') in the southwestern part of the Peloponnese region, in Greece. Until the implementation of the Kallikratis plan on 1 January 2011, Messenia was a prefecture (''nomos' ...
, Greece, a fishing boat sank while carrying an estimated 400 to 750 migrants, resulting in nearly 100 persons confirmed dead, another 100 rescued, and hundreds more missing and presumed dead. Search and rescue efforts for the migrant ship were conducted by the
Hellenic Coast Guard The Hellenic Coast Guard () is the national coast guard of Greece. Like many other coast guards, it is a paramilitary organization that can support the Hellenic Navy in wartime, but resides under separate civilian control in times of peace. The ...
and military. Ishaan Tharoor of ''
The Washington Post ''The Washington Post'', locally known as ''The'' ''Post'' and, informally, ''WaPo'' or ''WP'', is an American daily newspaper published in Washington, D.C., the national capital. It is the most widely circulated newspaper in the Washington m ...
'' wrote that Pakistani Internet users compared and contrasted the Pakistani victims in both incidents, who were on opposite sides of Pakistan's large socioeconomic divide. According to David Scott-Beddard, the CEO of White Star Memories Ltd, a ''Titanic'' exhibition company, the likelihood of performing future research at the ''Titanic'' wreck decreased due to the incident.
James Cameron James Francis Cameron (born August 16, 1954) is a Canadian filmmaker, who resides in New Zealand. He is a major figure in the post-New Hollywood era and often uses novel technologies with a Classical Hollywood cinema, classical filmmaking styl ...
, who directed the 1997 movie ''
Titanic RMS ''Titanic'' was a British ocean liner that sank in the early hours of 15 April 1912 as a result of striking an iceberg on her maiden voyage from Southampton, England, to New York City, United States. Of the estimated 2,224 passengers a ...
'', visited the ''Titanic'' wreck 33 times, and piloted ''
Deepsea Challenger ''Deepsea Challenger'' (DCV 1) was a deep-diving submersible designed to reach the bottom of the Challenger Deep, the deepest-known point on Earth. On 26 March 2012, Canadian film director James Cameron piloted the craft to accomplish this go ...
'' to the bottom of the
Mariana Trench The Mariana Trench is an oceanic trench located in the western Pacific Ocean, about east of the Mariana Islands; it is the deep sea, deepest oceanic trench on Earth. It is crescent-shaped and measures about in length and in width. The maxi ...
, said he was "struck by the similarity" between the submersible's implosion and the events that resulted in the ''Titanic'' disaster. He noted that both disasters seemed preventable, and were caused indirectly by someone deliberately ignoring safety warnings from others. Cameron criticized the choice of
carbon-fibre composite Carbon fiber-reinforced polymers (American English), carbon-fibre-reinforced polymers (Commonwealth English), carbon-fiber-reinforced plastics, carbon-fiber reinforced-thermoplastic (CFRP, CRP, CFRTP), also known as carbon fiber, carbon compo ...
construction of the pressure vessel, saying it has "no strength in compression" when subject to the immense pressures at depth. Cameron said that pressure hulls should be made out of contiguous materials such as steel, titanium, ceramic, or acrylic, and that the wound carbon fibre of ''Titan''s hull had seemed like a bad idea to him from the beginning. He stated that it was long known that composite hulls were vulnerable to microscopic water ingress, delamination, and progressive failure over time. He also criticized Rush's real-time monitoring of the hull as an inadequate solution that would do little to prevent an implosion. Cameron expressed regret for not being more outspoken about these concerns before the accident, and criticized what he termed "false hopes" being presented to the victims' families; he and his colleagues realized early on that for communication and tracking (the latter housed in a separate pressure vessel, with its own battery) to be lost simultaneously, the cause was almost certainly a catastrophic implosion. The Logitech F710 game controller used to steer ''Titan'' sold out on
Amazon Amazon most often refers to: * Amazon River, in South America * Amazon rainforest, a rainforest covering most of the Amazon basin * Amazon (company), an American multinational technology company * Amazons, a tribe of female warriors in Greek myth ...
soon after the incident, which was described as "a more benign form of
disaster tourism Disaster tourism is the practice of visiting locations at which an environmental disaster, either natural or human-made, has occurred. Although a variety of disasters are the subject of subsequent disaster tourism, the most common disaster touris ...
" by the ''New York'' weblog the ''Cut''.


In social and mass media

The submersible became widely discussed on social media as the story developed and was the subject of "public
schadenfreude Schadenfreude (; ; "harm-joy") is the experience of pleasure, joy, or self-satisfaction that comes from learning of or witnessing the troubles, failures, pain, suffering, or humiliation of another. It is a loanword from German. Schadenfreude ...
", inspiring grimly humorous
Internet meme An Internet meme, or meme (, Help:Pronunciation respelling key, ''MEEM''), is a cultural item (such as an idea, behavior, or style) that spreads across the Internet, primarily through Social media, social media platforms. Internet memes manif ...
s, namely interactive
video game A video game or computer game is an electronic game that involves interaction with a user interface or input device (such as a joystick, game controller, controller, computer keyboard, keyboard, or motion sensing device) to generate visual fe ...
recreations and
image macro An image macro is a piece of digital media featuring a picture, or artwork, with some form of text superimposed. The text frequently appears at the top and bottom of the image. Image macros were one of the most common forms of internet memes in t ...
s that ridiculed the submersible's deficient construction, OceanGate's perceived poor safety record, and the individuals who died. The memes were criticized as insensitive, with
David Pogue David Welch Pogue (born March 9, 1963) is an American technology and science writer and TV presenter, and correspondent for ''CBS News Sunday Morning''. He has hosted 18 ''Nova'' specials on PBS, including '' Nova ScienceNow'', the ''Making Stu ...
regarding such media as "inappropriate and a little bit sick". Some have felt the negative reaction to the victims may be a response to past news coverage of other expeditions by billionaires, often using their own companies such as
Blue Origin Blue Origin Enterprises, L.P. is an American space technology company headquartered in Kent, Washington. The company operates the suborbital New Shepard rocket and the heavy-lift New Glenn rocket. In addition to producing engines for its own ...
. Molly Roberts wrote in ''The Washington Post'' that those joking about the incident were demonstrating Internet users' impulses to be ironic, provocative, and angry with each other, combined with an " eat-the-rich attitude". According to
media psychology Media psychology is a branch of psychology that focuses on the interactions between human behavior, media, and technology. Media psychology is not limited to mass media or media content; it includes all forms of mediated communication and media t ...
expert Pamela Rutledge, an American expert in
social media Social media are interactive technologies that facilitate the Content creation, creation, information exchange, sharing and news aggregator, aggregation of Content (media), content (such as ideas, interests, and other forms of expression) amongs ...
and
mass media Mass media include the diverse arrays of media that reach a large audience via mass communication. Broadcast media transmit information electronically via media such as films, radio, recorded music, or television. Digital media comprises b ...
, the ''Titan'' incident was widely treated on social media as entertainment. Major elements include the allure of disasters, fascination with the wealthy,
conspiracy theories A conspiracy theory is an explanation for an event or situation that asserts the existence of a conspiracy (generally by powerful sinister groups, often political in motivation), when other explanations are more probable.Additional sources: * ...
, uncertainty, and the mythology of the ''Titanic'', as well as the romance of rescue operations. Rutledge opined that the trend displayed a lack of accountability and empathy. She asserted there is a need for individuals to rethink the way in which they use social media. In September 2023, it was announced that a new movie about the ''Titan'' submersible incident, named ''Salvaged'', was in development. The amount of media coverage and public attention for the ''Titan'' incident was criticized by people such as
Barack Obama Barack Hussein Obama II (born August 4, 1961) is an American politician who was the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, he was the first African American president in American history. O ...
, the former
U.S president The president of the United States (POTUS) is the head of state and head of government of the United States. The president directs the Federal government of the United States#Executive branch, executive branch of the Federal government of t ...
, commenting that the contemporaneous
2023 Messenia migrant boat disaster On 14 June 2023, the ''Adriana'', an Italy-bound fishing trawler smuggling migrants, sank in international waters in the part of the Mediterranean Sea, Mediterranean known as the Ionian Sea, off the coast of Pylos, Messenia, Greece. The boat had ...
had received much less attention. The 2024
American Broadcasting Company The American Broadcasting Company (ABC) is an American Commercial broadcasting, commercial broadcast Television broadcaster, television and radio Radio network, network that serves as the flagship property of the Disney Entertainment division ...
(ABC) special ''Truth and Lies: Fatal Dive to the Titanic'' examined the submersible implosion of the ''Titan''. In February 2024, a movie inspired by the events of the ''Titan'' submersible incident, titled ''Locker'', was announced. In March 2024, a two-part documentary by ITN Productions, ''Minute by Minute: The Titan Sub Disaster'', was broadcast by UK's Channel 5. The documentary included interviews with the Canadian air crew that searched the surface, Edward Cassano of the Pelagic remotely-operated vehicle team that found the wreckage, and members of the
Marine Technology Society The Marine Technology Society (MTS) is a professional society that serves an international community of approximately 2,000 ocean engineers, technologists, policy-makers, and educators. The goal of the society, which was founded in 1963, is to pro ...
William Kohnen and Bart Kemper. Kohnen and Kemper had warned OceanGate about their deviation from accepted engineering practices in 2018. Analysis of the mysterious "banging" sounds that seemed to indicate the occupants were still alive was a main feature of the first part. On June 11, 2025,
Netflix Netflix is an American subscription video on-demand over-the-top streaming service. The service primarily distributes original and acquired films and television shows from various genres, and it is available internationally in multiple lang ...
released the documentary '' Titan: The OceanGate Disaster.'' The documentary primarily examines a number of issues, such as Stockton Rush, OceanGate's manufacturing and operating practices prior to the ''Titan'' Implosion as well as the cause, response, and aftermath to the ''Titan'' implosion. The documentary includes interviews with former Oceangate employees,
whistleblowers Whistleblowing (also whistle-blowing or whistle blowing) is the activity of a person, often an employee, revealing information about activity within a private or public organization that is deemed illegal, immoral, illicit, unsafe, unethical or ...
, and government officials.


See also

* List of shipwrecks in 2023 * List of submarine and submersible incidents since 2000


Notes


References


External links


Titan Submersible Marine Board of Investigation
, U.S. Coast Guard Marine Board of Investigation
Marine transportation safety investigation M23A0169
,
Transportation Safety Board of Canada The Transportation Safety Board of Canada (TSB, ), officially the Canadian Transportation Accident Investigation and Safety Board () is the agency of the Government of Canada responsible for advancing transportation safety in Canada. It is acc ...
{{DEFAULTSORT:Titan submersible implosion June 2023 Maritime incidents in 2023 Maritime incidents involving engineering failures Submarine accidents Submarines lost with all hands Internet memes introduced in 2023 submersible, 2023 incident Articles containing video clips Implosion 2023 controversies