The Priest of St. Pauli

The Priest of St. Pauli (Der Pfarrer von St. Pauli) is a 1970 West German drama film directed by Rolf Olsen and starring Curd Jürgens. Two years earlier they had made the similarly-themed The Doctor of St. Pauli together.

Plot
A former submarine commander turned priest tends to the inhabitants of St. Pauli, the red light district of Hamburg.