"Brace for Impact!" Inside a Nuclear Submarine Emergency | 4K Submarine | Full Episode 4

HMS Superb faces a sudden and terrifying emergency: a collision with an unidentified object deep underwater. But as the captain reveals, this isn't a real disaster it's a high-stakes simulation. Joined by the demanding Sea-Riders, the crew faces 5 days of intense, grueling training. From fighting fires and hydraulic bursts to handling electrical failures and simulated nuclear contamination, they must prove their ability to react instantly. ⏩Continue watching the Submarine series: 👉https://www.youtube.com/playlist?list=PL4gBm7DwLXxLyY4xtyOrF4PYp0kZPRJ4A Subscribe to Emergencies Up Close - https://www.youtube.com/@EmergenciesUpCloseITVS?sub_confirmation=1 Watch More Documentaries Up Close - youtube.com/@UCk4gf0vIPFwrV34NbaqCQyw Crime Up Close - youtube.com/@UC_HjTn8kjf9QSuYM6SqdKJg Rails, Roads & Runways - youtube.com/@UCsSBzp1ZwlOPMmzfiocKHVA Blueprint - youtube.com/@UCJqo83iPTdpMNOT-3O-RnKA Our History - youtube.com/@UCx88hWQrq8fWZnpsiZZBqnA True Lives - youtube.com/@UCT9ehHCu59wpsPyrcKZt72w Our World - youtube.com/@UCouPeqI9PDQ4kSI2lOEOLpg Our Stories - youtube.com/@UC-hzoAk2bSnoqW0LmECa5WA Taste - youtube.com/@UCyZQGi9vZNFQHouRKLndszA Get access like never before to the lives of police officers, firefighters and doctors with a collection of the best documentaries following emergency workers worldwide. Content distributed by ITV Studios. #submarine #documentary #navy