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2 Episodes 2021 - 2021
Episode 1
46 mins
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.
Episode 2
44 mins
Captain Stephen Brian takes command of HMS Trenchant. His arrival coincides with a growing threat from Russia, as their warships and submarines make forays into British waters.