© 2026 ABC News

In 2022, the thruster controls malfunctioned and caused the vessel to spin once it reached the Titanic depth, though the pilot was able to retrain it himself and they completed the dive. In another dive that year, a loud bang was heard as the Titan ascended. Don Kramer, the acting chief of the NTSB's materials laboratory, testified that his team determined that the hull's strain response changed after this loud bang incident in subsequent dives.

In 2023, the Titan partially sank four weeks before the implosion following a night of high seas and fog, according to the Coast Guard. Days before the implosion, passengers slammed against the vessel during resurfacing when the platform malfunctioned.

One former OceanGate employee testified that there were also concerns about having to tow the sub on the open seas when they switched to using the Polar Prince in 2023.

The Titan had 70 equipment issues in 2021 that needed correcting, and 48 more in 2022, according to the Coast Guard.

Engineering firm finds implosion cause 'indeterminate'

Kemper Engineering principal engineer Bart Kemper told investigators that his firm could not determine a root cause of the implosion at this time.

\"There are multiple unmitigated single-mode failures, which means that all it takes is that one thing to go for the whole thing to do,\" he said.

Kemper said the fact that there was an unknown design life of the sub \"is a huge factor in that.\"

\"Conceivably, the number of dives that occurred with the Titan was its actual design life,\" he said. \"Or it might have even been less by design and exceeded it. We do not know.\"

","canonicalUrl":"https://abcnews.com/US/titan-implosion-coast-guard-hearing-highlights/story?id=114296878","legacySlug":"/news/story/titan-implosion-coast-guard-hearing-highlights-114296878","noIndexNoFollow":false},"publishTime":"10:06","publishDate":"09-28-2024","updatedTime":"19:57","updatedDate":"08-04-2025","socialImage":{"alt":"Remotely operated vehicle image of the Titan submersible tail cone on the bottom of the Atlantic Ocean presented by the U.S. Coast Guard during a marine board formal hearing, Sept. 16, 2024, in North Charleston, S.C.","credit":"Pelagic Research Services/U.S. Coast Guard","ratio":"16x9","url":"https://s.abcnews.com/images/US/titan.submersible-1-ht-gmh-240925_1727280885949_hpMain_16x9_1600.jpg","width":992,"height":558},"datePublished":"9/28/2024 10:06:00 GMT","video":{"live":false,"id":114296878,"headline":"Highlights from Coast Guard's Titan hearing","mediaAssetTitle":"TITAN HEARING HIGHLIGHTS","description":"More than two dozen witnesses testified.","duration":"0:51","posterImg":{"url":"https://s.abcnews.com/images/GMA/default-img-undefined.png","width":608,"height":342},"video":{"feed":"https://service-pkgabcnews.akamaized.net/opp/hls/abcnews/2024/09/240925_vod_titan_submersible_hearing_,500,800,1200,1800,2500,3200,4500,.mp4.csmil/playlist.m3u8"},"playlist":["132055565","131830882","130993584"]},"relatedItems":[{"contentType":"video","date":"April 15, 2026","headline":"American influencer found dead in Tanzania","section":"News","slug":"/video/132055565","id":"132055565","image":{"alt":"VIDEO: American influencer found dead in Tanzania","credit":"ABCNews.com","ratio":"1x1","url":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_1x1_608.jpg","width":384,"height":384},"images":{"alt":"VIDEO: American influencer found dead in Tanzania","credit":"ABCNews.com","crops":[{"16x9":{"small":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_16x9_608.jpg","medium":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_16x9_992.jpg","large":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_16x9_1600.jpg"}},{"9x16":{"small":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_9x16_608.jpg","medium":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_9x16_992.jpg","large":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_16x9_1600.jpg"}},{"1x1":{"small":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_1x1_608.jpg","medium":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_1x1_992.jpg","large":"https://s.abcnews.com/images/GMA/260415_gma_norwood_ashlee2_732_hpMain_1x1_1600.jpg"}}]}},{"contentType":"video","date":"April 8, 2026","headline":"Ceasefire analysis, unanswered questions ahead","section":"News","slug":"/video/131830882","id":"131830882","image":{"alt":"VIDEO: Ceasefire analysis, unanswered questions ahead","credit":"ABCNews.com","ratio":"1x1","url":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_1x1_608.jpg","width":384,"height":384},"images":{"alt":"VIDEO: Ceasefire analysis, unanswered questions ahead","credit":"ABCNews.com","crops":[{"16x9":{"small":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_16x9_608.jpg","medium":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_16x9_992.jpg","large":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_16x9_1600.jpg"}},{"9x16":{"small":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_9x16_608.jpg","medium":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_9x16_992.jpg","large":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_16x9_1600.jpg"}},{"1x1":{"small":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_1x1_608.jpg","medium":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_1x1_992.jpg","large":"https://s.abcnews.com/images/GMA/260408_gma_krl1_hpMain_1x1_1600.jpg"}}]}},{"contentType":"video","date":"March 12, 2026","headline":"Winter whiplash plunges temperatures along the East Coast","section":"News","slug":"/video/130993584","id":"130993584","image":{"alt":"VIDEO: Winter whiplash plunges temperatures along the East Coast","credit":"ABCNews.com","ratio":"1x1","url":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_1x1_608.jpg","width":384,"height":384},"images":{"alt":"VIDEO: Winter whiplash plunges temperatures along the East Coast","credit":"ABCNews.com","crops":[{"16x9":{"small":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_16x9_608.jpg","medium":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_16x9_992.jpg","large":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_16x9_1600.jpg"}},{"9x16":{"small":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_9x16_608.jpg","medium":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_9x16_992.jpg","large":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_16x9_1600.jpg"}},{"1x1":{"small":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_1x1_608.jpg","medium":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_1x1_992.jpg","large":"https://s.abcnews.com/images/GMA/260312_gma_zee_storm2_hpMain_1x1_1600.jpg"}}]}}],"relatedContentSection":"news","schemaContent":{"name":"Highlights from Coast Guard's Titan hearing","description":"More than two dozen witnesses testified.","duration":"0:51","uploadDate":"09-28-2024","publication":"09-28-2024","images":"https://s.abcnews.com/images/GMA/default-img-undefined.png","url":"https://service-pkgabcnews.akamaized.net/opp/hls/abcnews/2024/09/240925_vod_titan_submersible_hearing_,500,800,1200,1800,2500,3200,4500,.mp4.csmil/playlist.m3u8","contentUrl":"https://service-pkgabcnews.akamaized.net/opp/hls/abcnews/2024/09/240925_vod_titan_submersible_hearing_,500,800,1200,1800,2500,3200,4500,.mp4.csmil/playlist.m3u8","link":"https://www.goodmorningamerica.com/news/story/titan-implosion-coast-guard-hearing-highlights-114296878"}},"playlist":[{"id":"132054443","contentType":"story","section":"news"},{"id":"132054798","contentType":"story","section":"news"},{"id":"132033010","contentType":"story","section":"news"},{"id":"131912713","contentType":"story","section":"news"},{"id":"131830583","contentType":"story","section":"news"},{"id":"131834976","contentType":"story","section":"news"},{"id":"131554765","contentType":"story","section":"news"},{"id":"131554815","contentType":"story","section":"news"},{"id":"131543053","contentType":"story","section":"news"},{"id":"131432442","contentType":"story","section":"news"},{"id":"131121474","contentType":"story","section":"news"},{"id":"131247079","contentType":"story","section":"news"},{"id":"131228784","contentType":"story","section":"news"},{"id":"131178806","contentType":"story","section":"news"},{"id":"131142257","contentType":"story","section":"news"},{"id":"131046664","contentType":"story","section":"news"},{"id":"131048076","contentType":"story","section":"news"},{"id":"131033212","contentType":"story","section":"news"},{"id":"130999943","contentType":"story","section":"news"},{"id":"130971027","contentType":"story","section":"news"}],"kvps":{"pgtyp":"article","lang":"en","sp":"goodmorningamerica","programmatic":"true","bundleId":"com.abcnews"}},"analytics":{"accountID":"wdgnewwdgnewgmaweb","ns":"gma","pageName":"gma:news:video","pageType":"video","globalSpecVersion":"v1.08","siteDifferentiator":"gma:site","tagID":"g_page01","userABCookie":"0","section":"news","title":"Highlights from Coast Guard's Titan hearing","pubTime":"06:06","pubDate":"09-28-2024","modTime":"15:57","modDate":"08-04-2025","taxonomyTags":"none","id":114296878,"editorialOtherSubjects":"","wordCount":"none","columns":"none","authors":"","authorsUnit":"none","authorsBureau":"none","subBrand":"Good Morning America","provider":"Good Morning America","videoName":"Highlights from Coast Guard's Titan hearing","mediaAssetTitle":"TITAN HEARING HIGHLIGHTS","videoId":114296878,"mediaOnPage":"video","legacySlug":"/news/story/titan-implosion-coast-guard-hearing-highlights-114296878"},"taboola":{}},"request":{"headers":{},"httpVersion":"1.1","method":"GET","url":"/video/114296878","vary":{"host":"www.goodmorningamerica.com","cached":true,"path":"/video/114296878","forwarded-proto":"https","device":"desktop","userab":"0"}},"viewport":{"width":1260,"height":0},"user":{}};