Jürgen Prochnow plays Captain Lieutenant 'Der Alte,' the seasoned and respected leader of the U-boat crew.
Herbert Grönemeyer portrays Lieutenant Werner, a young and inexperienced officer on board the U-boat.
Klaus Wennemann takes on the role of Chief Engineer, responsible for the mechanical operations of the U-boat.
Hubertus Bengsch plays the First Watch Officer, assisting the captain in navigating the challenges of underwater warfare.
Martin Semmelrogge portrays the Second Watch Officer, involved in the day-to-day operations and decisions aboard the U-boat.
Bernd Tauber appears as Kriechbaum, one of the crew members facing the dangers and uncertainties of submarine warfare.
Erwin Leder takes on the role of Johann 'Das Gespenst,' bringing a sense of mystery and tension to the crew dynamics.
Martin May is seen as Ullmann, a crew member navigating the treacherous waters of the Atlantic Ocean.
Heinz Hoenig plays Hinrich, a crew member caught in the intense and claustrophobic environment of the U-boat.
Uwe Ochsenknecht portrays the Chief Bosun, overseeing the general maintenance and discipline on the U-boat.
Claude-Oliver Rudolph appears as Ario, a crew member enduring the challenges of wartime conditions below the surface.
Jan Fedder plays Pilgrim, a member of the U-boat crew grappling with fear and camaraderie in the face of danger.
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