The Captain's Final Dive: Leaving the HMS Superb | 4K Submarine | Full Episode 6

After a long refit, the nuclear submarine and her crew are pushed to their absolute limits by the relentless assessors of the CSST. Commander John Humphrey leads his men through grueling war games that simulate the terrifying realities of underwater warfare. From battling catastrophic fires and critical electrical failures in claustrophobic corridors to executing a daring stealth maneuver directly beneath a 4,000-ton "enemy" frigate, there is zero margin for error. ⏩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