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Officer and CommanderEpisodes

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  1. Episode 4

    4/4Disaster threatens as the crew struggle to complete this final mission.

  2. Episode 3

    3/4The crew's performance is improving but technical problems have jeopardised the mission.

  3. Episode 2

    2/4The boat is finally put to sea and the crew get used to life on board after a delay.

  4. Episode 1

    1/4Following Britain’s oldest nuclear submarine through its last year of operational life.