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- Episode aired Sep 13, 2021
- 46m
HMS Trenchant and her crew prepare the submarine to leave port for the first time in six months, with enough food coming on board to last for up to 120 days underwater.HMS Trenchant and her crew prepare the submarine to leave port for the first time in six months, with enough food coming on board to last for up to 120 days underwater.HMS Trenchant and her crew prepare the submarine to leave port for the first time in six months, with enough food coming on board to last for up to 120 days underwater.