Der Kapitän (1971)

Captain Ebbs is an older, experienced seaman who has, however, only sailed on freighters. While his current old barge, the Martin Luther, has to go into the shipyard for an overhaul, the shipping company gives him command of the elegant cruise ship Julia to temporarily replace a colleague who has fallen ill. The rough Ebbs finds his way into his new job only with difficulty and initially puts his foot in his social mouth.