Given the reinstitution of Donald Trump’s “Travel Ban 2”, this might be a good time to recall the 1976 film “Voyage of the Damned”, directed by Stuart Rosenberg based on the book by Gordon Thomas.
Stars included Faye Dunaway, Oskar Werner and Lee Grant.
I remember seeing the film around Times Square (I was living in Manhattan) a few days after Christmas 1976.
The film was distributed by Avco Embassy in the US (a quasi indie company then) and J. Arthur Rank in the UK (well established in European films in earlier times).
Wikipedia attribution link to P.d. picture of boarding in Hambrug taken in 1939. I have visited Hamburg once, in 1972.